diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/0001-p2m-Always-check-to-see-if-removing-a-p2m-entry-actu.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/0001-p2m-Always-check-to-see-if-removing-a-p2m-entry-actu.patch
new file mode 100644
index 0000000..ad9524a
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/0001-p2m-Always-check-to-see-if-removing-a-p2m-entry-actu.patch
@@ -0,0 +1,176 @@
+From ad208b8b7e45fb2b7c572b86c61c26412609e82d Mon Sep 17 00:00:00 2001
+From: George Dunlap <george.dunlap@citrix.com>
+Date: Fri, 10 Nov 2017 16:53:54 +0000
+Subject: [PATCH 1/2] p2m: Always check to see if removing a p2m entry actually
+ worked
+
+The PoD zero-check functions speculatively remove memory from the p2m,
+then check to see if it's completely zeroed, before putting it in the
+cache.
+
+Unfortunately, the p2m_set_entry() calls may fail if the underlying
+pagetable structure needs to change and the domain has exhausted its
+p2m memory pool: for instance, if we're removing a 2MiB region out of
+a 1GiB entry (in the p2m_pod_zero_check_superpage() case), or a 4k
+region out of a 2MiB or larger entry (in the p2m_pod_zero_check()
+case); and the return value is not checked.
+
+The underlying mfn will then be added into the PoD cache, and at some
+point mapped into another location in the p2m.  If the guest
+afterwards ballons out this memory, it will be freed to the hypervisor
+and potentially reused by another domain, in spite of the fact that
+the original domain still has writable mappings to it.
+
+There are several places where p2m_set_entry() shouldn't be able to
+fail, as it is guaranteed to write an entry of the same order that
+succeeded before.  Add a backstop of crashing the domain just in case,
+and an ASSERT_UNREACHABLE() to flag up the broken assumption on debug
+builds.
+
+While we're here, use PAGE_ORDER_2M rather than a magic constant.
+
+This is part of XSA-247.
+
+Reported-by: George Dunlap <george.dunlap.com>
+Signed-off-by: George Dunlap <george.dunlap@citrix.com>
+Reviewed-by: Jan Beulich <jbeulich@suse.com>
+---
+v4:
+- Removed some training whitespace
+v3:
+- Reformat reset clause to be more compact
+- Make sure to set map[i] = NULL when unmapping in case we need to bail
+v2:
+- Crash a domain if a p2m_set_entry we think cannot fail fails anyway.
+---
+ xen/arch/x86/mm/p2m-pod.c | 77 +++++++++++++++++++++++++++++++++++++----------
+ 1 file changed, 61 insertions(+), 16 deletions(-)
+
+diff --git a/xen/arch/x86/mm/p2m-pod.c b/xen/arch/x86/mm/p2m-pod.c
+index 730a48f928..f2ed751892 100644
+--- a/xen/arch/x86/mm/p2m-pod.c
++++ b/xen/arch/x86/mm/p2m-pod.c
+@@ -752,8 +752,10 @@ p2m_pod_zero_check_superpage(struct p2m_domain *p2m, unsigned long gfn)
+     }
+ 
+     /* Try to remove the page, restoring old mapping if it fails. */
+-    p2m_set_entry(p2m, gfn, INVALID_MFN, PAGE_ORDER_2M,
+-                  p2m_populate_on_demand, p2m->default_access);
++    if ( p2m_set_entry(p2m, gfn, INVALID_MFN, PAGE_ORDER_2M,
++                       p2m_populate_on_demand, p2m->default_access) )
++        goto out;
++
+     p2m_tlb_flush_sync(p2m);
+ 
+     /* Make none of the MFNs are used elsewhere... for example, mapped
+@@ -810,9 +812,18 @@ p2m_pod_zero_check_superpage(struct p2m_domain *p2m, unsigned long gfn)
+     ret = SUPERPAGE_PAGES;
+ 
+ out_reset:
+-    if ( reset )
+-        p2m_set_entry(p2m, gfn, mfn0, 9, type0, p2m->default_access);
+-    
++    /*
++     * This p2m_set_entry() call shouldn't be able to fail, since the same order
++     * on the same gfn succeeded above.  If that turns out to be false, crashing
++     * the domain should be the safest way of making sure we don't leak memory.
++     */
++    if ( reset && p2m_set_entry(p2m, gfn, mfn0, PAGE_ORDER_2M,
++                                type0, p2m->default_access) )
++    {
++        ASSERT_UNREACHABLE();
++        domain_crash(d);
++    }
++
+ out:
+     gfn_unlock(p2m, gfn, SUPERPAGE_ORDER);
+     return ret;
+@@ -869,19 +880,30 @@ p2m_pod_zero_check(struct p2m_domain *p2m, unsigned long *gfns, int count)
+         }
+ 
+         /* Try to remove the page, restoring old mapping if it fails. */
+-        p2m_set_entry(p2m, gfns[i], INVALID_MFN, PAGE_ORDER_4K,
+-                      p2m_populate_on_demand, p2m->default_access);
++        if ( p2m_set_entry(p2m, gfns[i], INVALID_MFN, PAGE_ORDER_4K,
++                           p2m_populate_on_demand, p2m->default_access) )
++            goto skip;
+ 
+         /* See if the page was successfully unmapped.  (Allow one refcount
+          * for being allocated to a domain.) */
+         if ( (mfn_to_page(mfns[i])->count_info & PGC_count_mask) > 1 )
+         {
++            /*
++             * If the previous p2m_set_entry call succeeded, this one shouldn't
++             * be able to fail.  If it does, crashing the domain should be safe.
++             */
++            if ( p2m_set_entry(p2m, gfns[i], mfns[i], PAGE_ORDER_4K,
++                               types[i], p2m->default_access) )
++            {
++                ASSERT_UNREACHABLE();
++                domain_crash(d);
++                goto out_unmap;
++            }
++
++        skip:
+             unmap_domain_page(map[i]);
+             map[i] = NULL;
+ 
+-            p2m_set_entry(p2m, gfns[i], mfns[i], PAGE_ORDER_4K,
+-                types[i], p2m->default_access);
+-
+             continue;
+         }
+     }
+@@ -900,12 +922,25 @@ p2m_pod_zero_check(struct p2m_domain *p2m, unsigned long *gfns, int count)
+ 
+         unmap_domain_page(map[i]);
+ 
+-        /* See comment in p2m_pod_zero_check_superpage() re gnttab
+-         * check timing.  */
+-        if ( j < PAGE_SIZE/sizeof(*map[i]) )
++        map[i] = NULL;
++
++        /*
++         * See comment in p2m_pod_zero_check_superpage() re gnttab
++         * check timing.
++         */
++        if ( j < (PAGE_SIZE / sizeof(*map[i])) )
+         {
+-            p2m_set_entry(p2m, gfns[i], mfns[i], PAGE_ORDER_4K,
+-                types[i], p2m->default_access);
++            /*
++             * If the previous p2m_set_entry call succeeded, this one shouldn't
++             * be able to fail.  If it does, crashing the domain should be safe.
++             */
++            if ( p2m_set_entry(p2m, gfns[i], mfns[i], PAGE_ORDER_4K,
++                               types[i], p2m->default_access) )
++            {
++                ASSERT_UNREACHABLE();
++                domain_crash(d);
++                goto out_unmap;
++            }
+         }
+         else
+         {
+@@ -929,7 +964,17 @@ p2m_pod_zero_check(struct p2m_domain *p2m, unsigned long *gfns, int count)
+             p2m->pod.entry_count++;
+         }
+     }
+-    
++
++    return;
++
++out_unmap:
++    /*
++     * Something went wrong, probably crashing the domain.  Unmap
++     * everything and return.
++     */
++    for ( i = 0; i < count; i++ )
++        if ( map[i] )
++            unmap_domain_page(map[i]);
+ }
+ 
+ #define POD_SWEEP_LIMIT 1024
+-- 
+2.15.0
+
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/0002-p2m-Check-return-value-of-p2m_set_entry-when-decreas.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/0002-p2m-Check-return-value-of-p2m_set_entry-when-decreas.patch
new file mode 100644
index 0000000..8c850bd
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/0002-p2m-Check-return-value-of-p2m_set_entry-when-decreas.patch
@@ -0,0 +1,109 @@
+From d4bc7833707351a5341a6bdf04c752a028d9560d Mon Sep 17 00:00:00 2001
+From: George Dunlap <george.dunlap@citrix.com>
+Date: Fri, 10 Nov 2017 16:53:55 +0000
+Subject: [PATCH 2/2] p2m: Check return value of p2m_set_entry() when
+ decreasing reservation
+
+If the entire range specified to p2m_pod_decrease_reservation() is marked
+populate-on-demand, then it will make a single p2m_set_entry() call,
+reducing its PoD entry count.
+
+Unfortunately, in the right circumstances, this p2m_set_entry() call
+may fail.  It that case, repeated calls to decrease_reservation() may
+cause p2m->pod.entry_count to fall below zero, potentially tripping
+over BUG_ON()s to the contrary.
+
+Instead, check to see if the entry succeeded, and return false if not.
+The caller will then call guest_remove_page() on the gfns, which will
+return -EINVAL upon finding no valid memory there to return.
+
+Unfortunately if the order > 0, the entry may have partially changed.
+A domain_crash() is probably the safest thing in that case.
+
+Other p2m_set_entry() calls in the same function should be fine,
+because they are writing the entry at its current order.  Nonetheless,
+check the return value and crash if our assumption turns otu to be
+wrong.
+
+This is part of XSA-247.
+
+Reported-by: George Dunlap <george.dunlap.com>
+Signed-off-by: George Dunlap <george.dunlap@citrix.com>
+Reviewed-by: Jan Beulich <jbeulich@suse.com>
+---
+v2: Crash the domain if we're not sure it's safe (or if we think it
+can't happen)
+---
+ xen/arch/x86/mm/p2m-pod.c | 42 +++++++++++++++++++++++++++++++++---------
+ 1 file changed, 33 insertions(+), 9 deletions(-)
+
+diff --git a/xen/arch/x86/mm/p2m-pod.c b/xen/arch/x86/mm/p2m-pod.c
+index f2ed751892..473d6a6dbf 100644
+--- a/xen/arch/x86/mm/p2m-pod.c
++++ b/xen/arch/x86/mm/p2m-pod.c
+@@ -555,11 +555,23 @@ p2m_pod_decrease_reservation(struct domain *d,
+ 
+     if ( !nonpod )
+     {
+-        /* All PoD: Mark the whole region invalid and tell caller
+-         * we're done. */
+-        p2m_set_entry(p2m, gpfn, INVALID_MFN, order, p2m_invalid,
+-                      p2m->default_access);
+-        p2m->pod.entry_count-=(1<<order);
++        /*
++         * All PoD: Mark the whole region invalid and tell caller
++         * we're done.
++         */
++        if ( p2m_set_entry(p2m, gpfn, INVALID_MFN, order, p2m_invalid,
++                           p2m->default_access) )
++        {
++            /*
++             * If this fails, we can't tell how much of the range was changed.
++             * Best to crash the domain unless we're sure a partial change is
++             * impossible.
++             */
++            if ( order != 0 )
++                domain_crash(d);
++            goto out_unlock;
++        }
++        p2m->pod.entry_count -= 1UL << order;
+         BUG_ON(p2m->pod.entry_count < 0);
+         ret = 1;
+         goto out_entry_check;
+@@ -600,8 +612,14 @@ p2m_pod_decrease_reservation(struct domain *d,
+         n = 1UL << cur_order;
+         if ( t == p2m_populate_on_demand )
+         {
+-            p2m_set_entry(p2m, gpfn + i, INVALID_MFN, cur_order,
+-                          p2m_invalid, p2m->default_access);
++            /* This shouldn't be able to fail */
++            if ( p2m_set_entry(p2m, gpfn + i, INVALID_MFN, cur_order,
++                               p2m_invalid, p2m->default_access) )
++            {
++                ASSERT_UNREACHABLE();
++                domain_crash(d);
++                goto out_unlock;
++            }
+             p2m->pod.entry_count -= n;
+             BUG_ON(p2m->pod.entry_count < 0);
+             pod -= n;
+@@ -622,8 +640,14 @@ p2m_pod_decrease_reservation(struct domain *d,
+ 
+             page = mfn_to_page(mfn);
+ 
+-            p2m_set_entry(p2m, gpfn + i, INVALID_MFN, cur_order,
+-                          p2m_invalid, p2m->default_access);
++            /* This shouldn't be able to fail */
++            if ( p2m_set_entry(p2m, gpfn + i, INVALID_MFN, cur_order,
++                               p2m_invalid, p2m->default_access) )
++            {
++                ASSERT_UNREACHABLE();
++                domain_crash(d);
++                goto out_unlock;
++            }
+             p2m_tlb_flush_sync(p2m);
+             for ( j = 0; j < n; ++j )
+                 set_gpfn_from_mfn(mfn_x(mfn), INVALID_M2P_ENTRY);
+-- 
+2.15.0
+
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/fix-libxc-xc_dom_arm-missing-initialization.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/fix-libxc-xc_dom_arm-missing-initialization.patch
deleted file mode 100644
index 05016a7..0000000
--- a/import-layers/meta-virtualization/recipes-extended/xen/files/fix-libxc-xc_dom_arm-missing-initialization.patch
+++ /dev/null
@@ -1,36 +0,0 @@
-commit 88bfbf90e35f1213f9967a97dee0b2039f9998a4
-Author: Bernd Kuhls <bernd.kuhls@t-online.de>
-Date:   Sat Aug 19 16:21:42 2017 +0200
-
-    tools/libxc/xc_dom_arm: add missing variable initialization
-    
-    The variable domctl.u.address_size.size may remain uninitialized if
-    guest_type is not one of xen-3.0-aarch64 or xen-3.0-armv7l. And the
-    code precisely checks if this variable is still 0 to decide if the
-    guest type is supported or not.
-    
-    This fixes the following build failure with gcc 7.x:
-    
-    xc_dom_arm.c:229:31: error: 'domctl.u.address_size.size' may be used uninitialized in this function [-Werror=maybe-uninitialized]
-         if ( domctl.u.address_size.size == 0 )
-    
-    Patch originally taken from
-    https://www.mail-archive.com/xen-devel@lists.xen.org/msg109313.html.
-    
-    Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
-    Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-    Acked-by: Wei Liu <wei.liu2@citrix.com>
-
-diff --git a/tools/libxc/xc_dom_arm.c b/tools/libxc/xc_dom_arm.c
-index e7d4bd0..e669fb0 100644
---- a/tools/libxc/xc_dom_arm.c
-+++ b/tools/libxc/xc_dom_arm.c
-@@ -223,6 +223,8 @@ static int set_mode(xc_interface *xch, domid_t domid, char *guest_type)
- 
-     domctl.domain = domid;
-     domctl.cmd    = XEN_DOMCTL_set_address_size;
-+    domctl.u.address_size.size = 0;
-+
-     for ( i = 0; i < ARRAY_SIZE(types); i++ )
-         if ( !strcmp(types[i].guest, guest_type) )
-             domctl.u.address_size.size = types[i].size;
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/lwip.dhcp_create_request-hwaddr_len.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/lwip.dhcp_create_request-hwaddr_len.patch
new file mode 100644
index 0000000..4bbf21a
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/lwip.dhcp_create_request-hwaddr_len.patch
@@ -0,0 +1,13 @@
+Index: src/core/dhcp.c
+===================================================================
+--- a/src/core/dhcp.c
++++ b/src/core/dhcp.c
+@@ -1356,7 +1358,7 @@ dhcp_create_request(struct netif *netif)
+   dhcp->msg_out->giaddr.addr = 0;
+   for (i = 0; i < DHCP_CHADDR_LEN; i++) {
+     /* copy netif hardware address, pad with zeroes */
+-    dhcp->msg_out->chaddr[i] = (i < netif->hwaddr_len) ? netif->hwaddr[i] : 0/* pad byte*/;
++    dhcp->msg_out->chaddr[i] = (i < (netif->hwaddr_len > NETIF_MAX_HWADDR_LEN ? NETIF_MAX_HWADDR_LEN : netif->hwaddr_len)) ? netif->hwaddr[i] : 0/* pad byte*/;
+   }
+   for (i = 0; i < DHCP_SNAME_LEN; i++) {
+     dhcp->msg_out->sname[i] = 0;
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/lwip.patch-cvs b/import-layers/meta-virtualization/recipes-extended/xen/files/lwip.patch-cvs
new file mode 100644
index 0000000..b271877
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/lwip.patch-cvs
@@ -0,0 +1,2398 @@
+? .ChangeLog.swp
+? ChangeLog
+Index: CHANGELOG
+===================================================================
+RCS file: /sources/lwip/lwip/CHANGELOG,v
+retrieving revision 1.300
+retrieving revision 1.318
+diff -u -p -r1.300 -r1.318
+--- a/CHANGELOG	23 Mar 2008 13:49:39 -0000	1.300
++++ b/CHANGELOG	14 Jul 2008 20:12:36 -0000	1.318
+@@ -19,9 +19,77 @@ HISTORY
+
+   ++ New features:
+
++  2008-06-30 Simon Goldschmidt
++  * mem.c, opt.h, stats.h: fixed bug #21433: Calling mem_free/pbuf_free from
++    interrupt context isn't safe: LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT allows
++    mem_free to run between mem_malloc iterations. Added illegal counter for
++    mem stats.
++
++  2008-06-27 Simon Goldschmidt
++  * stats.h/.c, some other files: patch #6483: stats module improvement:
++    Added defines to display each module's statistic individually, added stats
++    defines for MEM, MEMP and SYS modules, removed (unused) rexmit counter.
++
++  2008-06-17 Simon Goldschmidt
++  * err.h: patch #6459: Made err_t overridable to use a more efficient type
++    (define LWIP_ERR_T in cc.h)
++
++  2008-06-17 Simon Goldschmidt
++  * slipif.c: patch #6480: Added a configuration option for slipif for symmetry
++    to loopif
++
++  2008-06-17 Simon Goldschmidt (patch by Luca Ceresoli)
++  * netif.c, loopif.c, ip.c, netif.h, loopif.h, opt.h: Checked in slightly
++    modified version of patch # 6370: Moved loopif code to netif.c so that
++    loopback traffic is supported on all netifs (all local IPs).
++    Added option to limit loopback packets for each netifs.
++
+
+   ++ Bugfixes:
+
++  2008-08-14 Simon Goldschmidt
++  * api_msg.c: fixed bug #23847: do_close_internal references freed memory (when
++    tcp_close returns != ERR_OK)
++
++  2008-07-08 Frédéric Bernon
++  * stats.h: Fix some build bugs introduced with patch #6483 (missing some parameters
++    in macros, mainly if MEM_STATS=0 and MEMP_STATS=0).
++
++  2008-06-24 Jonathan Larmour
++  * tcp_in.c: Fix for bug #23693 as suggested by Art R. Ensure cseg is unused
++    if tcp_seg_copy fails.
++
++  2008-06-17 Simon Goldschmidt
++  * inet_chksum.c: Checked in some ideas of patch #6460 (loop optimizations)
++    and created defines for swapping bytes and folding u32 to u16.
++
++  2008-05-30 Kieran Mansley
++  * tcp_in.c Remove redundant "if" statement, and use real rcv_wnd
++    rather than rcv_ann_wnd when deciding if packets are in-window.
++    Contributed by <arasmussen@consultant.datasys.swri.edu>
++
++  2008-05-30 Kieran Mansley
++  * mem.h: Fix BUG#23254.  Change macro definition of mem_* to allow
++    passing as function pointers when MEM_LIBC_MALLOC is defined.
++
++  2008-05-09 Jonathan Larmour
++  * err.h, err.c, sockets.c: Fix bug #23119: Reorder timeout error code to
++    stop it being treated as a fatal error.
++
++  2008-04-15 Simon Goldschmidt
++  * dhcp.c: fixed bug #22804: dhcp_stop doesn't clear NETIF_FLAG_DHCP
++    (flag now cleared)
++
++  2008-03-27 Simon Goldschmidt
++  * mem.c, tcpip.c, tcpip.h, opt.h: fixed bug #21433 (Calling mem_free/pbuf_free
++    from interrupt context isn't safe): set LWIP_USE_HEAP_FROM_INTERRUPT to 1
++    in lwipopts.h or use pbuf_free_callback(p)/mem_free_callback(m) to free pbufs
++    or heap memory from interrupt context
++
++  2008-03-26 Simon Goldschmidt
++  * tcp_in.c, tcp.c: fixed bug #22249: division by zero could occur if a remote
++    host sent a zero mss as TCP option.
++
+
+ (STABLE-1.3.0)
+
+Index: src/api/api_msg.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/api/api_msg.c,v
+retrieving revision 1.102
+retrieving revision 1.104
+diff -u -p -r1.102 -r1.104
+--- a/src/api/api_msg.c	21 Mar 2008 16:23:14 -0000	1.102
++++ b/src/api/api_msg.c	15 Jul 2008 11:18:58 -0000	1.104
+@@ -598,11 +598,16 @@ do_close_internal(struct netconn *conn)
+   LWIP_ASSERT("pcb already closed", (conn->pcb.tcp != NULL));
+
+   /* Set back some callback pointers */
++  tcp_arg(conn->pcb.tcp, NULL);
+   if (conn->pcb.tcp->state == LISTEN) {
+-    tcp_arg(conn->pcb.tcp, NULL);
+     tcp_accept(conn->pcb.tcp, NULL);
+   } else {
+     tcp_recv(conn->pcb.tcp, NULL);
++    tcp_accept(conn->pcb.tcp, NULL);
++    /* some callbacks have to be reset if tcp_close is not successful */
++    tcp_sent(conn->pcb.tcp, NULL);
++    tcp_poll(conn->pcb.tcp, NULL, 4);
++    tcp_err(conn->pcb.tcp, NULL);
+   }
+   /* Try to close the connection */
+   err = tcp_close(conn->pcb.tcp);
+@@ -610,11 +615,6 @@ do_close_internal(struct netconn *conn)
+     /* Closing succeeded */
+     conn->state = NETCONN_NONE;
+     /* Set back some callback pointers as conn is going away */
+-    tcp_err(conn->pcb.tcp, NULL);
+-    tcp_poll(conn->pcb.tcp, NULL, 4);
+-    tcp_sent(conn->pcb.tcp, NULL);
+-    tcp_recv(conn->pcb.tcp, NULL);
+-    tcp_arg(conn->pcb.tcp, NULL);
+     conn->pcb.tcp = NULL;
+     conn->err = ERR_OK;
+     /* Trigger select() in socket layer. This send should something else so the
+@@ -623,6 +623,14 @@ do_close_internal(struct netconn *conn)
+     API_EVENT(conn, NETCONN_EVT_SENDPLUS, 0);
+     /* wake up the application task */
+     sys_sem_signal(conn->op_completed);
++  } else {
++    /* Closing failed, restore some of the callbacks */
++    /* Closing of listen pcb will never fail! */
++    LWIP_ASSERT("Closing a listen pcb may not fail!", (conn->pcb.tcp->state != LISTEN));
++    tcp_sent(conn->pcb.tcp, sent_tcp);
++    tcp_poll(conn->pcb.tcp, poll_tcp, 4);
++    tcp_err(conn->pcb.tcp, err_tcp);
++    tcp_arg(conn->pcb.tcp, conn);
+   }
+   /* If closing didn't succeed, we get called again either
+      from poll_tcp or from sent_tcp */
+Index: src/api/err.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/api/err.c,v
+retrieving revision 1.11
+retrieving revision 1.12
+diff -u -p -r1.11 -r1.12
+--- a/src/api/err.c	13 Dec 2007 23:06:50 -0000	1.11
++++ b/src/api/err.c	9 May 2008 12:14:23 -0000	1.12
+@@ -44,17 +44,17 @@ static const char *err_strerr[] = {
+            "Ok.",                    /* ERR_OK          0  */
+            "Out of memory error.",   /* ERR_MEM        -1  */
+            "Buffer error.",          /* ERR_BUF        -2  */
+-           "Routing problem.",       /* ERR_RTE        -3  */
+-           "Connection aborted.",    /* ERR_ABRT       -4  */
+-           "Connection reset.",      /* ERR_RST        -5  */
+-           "Connection closed.",     /* ERR_CLSD       -6  */
+-           "Not connected.",         /* ERR_CONN       -7  */
+-           "Illegal value.",         /* ERR_VAL        -8  */
+-           "Illegal argument.",      /* ERR_ARG        -9  */
+-           "Address in use.",        /* ERR_USE        -10 */
+-           "Low-level netif error.", /* ERR_IF         -11 */
+-           "Already connected.",     /* ERR_ISCONN     -12 */
+-           "Timeout.",               /* ERR_TIMEOUT    -13 */
++           "Timeout.",               /* ERR_TIMEOUT    -3 */
++           "Routing problem.",       /* ERR_RTE        -4  */
++           "Connection aborted.",    /* ERR_ABRT       -5  */
++           "Connection reset.",      /* ERR_RST        -6  */
++           "Connection closed.",     /* ERR_CLSD       -7  */
++           "Not connected.",         /* ERR_CONN       -8  */
++           "Illegal value.",         /* ERR_VAL        -9  */
++           "Illegal argument.",      /* ERR_ARG        -10 */
++           "Address in use.",        /* ERR_USE        -11 */
++           "Low-level netif error.", /* ERR_IF         -12 */
++           "Already connected.",     /* ERR_ISCONN     -13 */
+            "Operation in progress."  /* ERR_INPROGRESS -14 */
+ };
+
+Index: src/api/netdb.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/api/netdb.c,v
+retrieving revision 1.4
+retrieving revision 1.5
+diff -u -p -r1.4 -r1.5
+--- a/src/api/netdb.c	26 Jan 2008 16:11:39 -0000	1.4
++++ b/src/api/netdb.c	16 Jul 2008 20:36:12 -0000	1.5
+@@ -326,7 +326,8 @@ lwip_getaddrinfo(const char *nodename, c
+   if (nodename != NULL) {
+     /* copy nodename to canonname if specified */
+     size_t namelen = strlen(nodename);
+-    ai->ai_canonname = mem_malloc(namelen + 1);
++    LWIP_ASSERT("namelen is too long", (namelen + 1) <= (mem_size_t)-1);
++    ai->ai_canonname = mem_malloc((mem_size_t)(namelen + 1));
+     if (ai->ai_canonname == NULL) {
+       goto memerr;
+     }
+Index: src/api/sockets.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/api/sockets.c,v
+retrieving revision 1.116
+retrieving revision 1.117
+diff -u -p -r1.116 -r1.117
+--- a/src/api/sockets.c	13 Mar 2008 20:03:57 -0000	1.116
++++ b/src/api/sockets.c	9 May 2008 12:14:24 -0000	1.117
+@@ -128,17 +128,17 @@ static const int err_to_errno_table[] =
+   0,             /* ERR_OK          0      No error, everything OK. */
+   ENOMEM,        /* ERR_MEM        -1      Out of memory error.     */
+   ENOBUFS,       /* ERR_BUF        -2      Buffer error.            */
+-  EHOSTUNREACH,  /* ERR_RTE        -3      Routing problem.         */
+-  ECONNABORTED,  /* ERR_ABRT       -4      Connection aborted.      */
+-  ECONNRESET,    /* ERR_RST        -5      Connection reset.        */
+-  ESHUTDOWN,     /* ERR_CLSD       -6      Connection closed.       */
+-  ENOTCONN,      /* ERR_CONN       -7      Not connected.           */
+-  EINVAL,        /* ERR_VAL        -8      Illegal value.           */
+-  EIO,           /* ERR_ARG        -9      Illegal argument.        */
+-  EADDRINUSE,    /* ERR_USE        -10     Address in use.          */
+-  -1,            /* ERR_IF         -11     Low-level netif error    */
+-  -1,            /* ERR_ISCONN     -12     Already connected.       */
+-  ETIMEDOUT,     /* ERR_TIMEOUT    -13     Timeout                  */
++  ETIMEDOUT,     /* ERR_TIMEOUT    -3      Timeout                  */
++  EHOSTUNREACH,  /* ERR_RTE        -4      Routing problem.         */
++  ECONNABORTED,  /* ERR_ABRT       -5      Connection aborted.      */
++  ECONNRESET,    /* ERR_RST        -6      Connection reset.        */
++  ESHUTDOWN,     /* ERR_CLSD       -7      Connection closed.       */
++  ENOTCONN,      /* ERR_CONN       -8      Not connected.           */
++  EINVAL,        /* ERR_VAL        -9      Illegal value.           */
++  EIO,           /* ERR_ARG        -10     Illegal argument.        */
++  EADDRINUSE,    /* ERR_USE        -11     Address in use.          */
++  -1,            /* ERR_IF         -12     Low-level netif error    */
++  -1,            /* ERR_ISCONN     -13     Already connected.       */
+   EINPROGRESS    /* ERR_INPROGRESS -14     Operation in progress    */
+ };
+
+Index: src/api/tcpip.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/api/tcpip.c,v
+retrieving revision 1.70
+retrieving revision 1.73
+diff -u -p -r1.70 -r1.73
+--- a/src/api/tcpip.c	12 Jan 2008 11:52:22 -0000	1.70
++++ b/src/api/tcpip.c	27 Jun 2008 20:34:51 -0000	1.73
+@@ -518,4 +518,42 @@ tcpip_init(void (* initfunc)(void *), vo
+   sys_thread_new(TCPIP_THREAD_NAME, tcpip_thread, NULL, TCPIP_THREAD_STACKSIZE, TCPIP_THREAD_PRIO);
+ }
+
++/**
++ * Simple callback function used with tcpip_callback to free a pbuf
++ * (pbuf_free has a wrong signature for tcpip_callback)
++ *
++ * @param p The pbuf (chain) to be dereferenced.
++ */
++static void
++pbuf_free_int(void *p)
++{
++  struct pbuf *q = p;
++  pbuf_free(q);
++}
++
++/**
++ * A simple wrapper function that allows you to free a pbuf from interrupt context.
++ *
++ * @param p The pbuf (chain) to be dereferenced.
++ * @return ERR_OK if callback could be enqueued, an err_t if not
++ */
++err_t
++pbuf_free_callback(struct pbuf *p)
++{
++  return tcpip_callback_with_block(pbuf_free_int, p, 0);
++}
++
++/**
++ * A simple wrapper function that allows you to free heap memory from
++ * interrupt context.
++ *
++ * @param m the heap memory to free
++ * @return ERR_OK if callback could be enqueued, an err_t if not
++ */
++err_t
++mem_free_callback(void *m)
++{
++  return tcpip_callback_with_block(mem_free, m, 0);
++}
++
+ #endif /* !NO_SYS */
+Index: src/core/dhcp.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/core/dhcp.c,v
+retrieving revision 1.86
+retrieving revision 1.87
+diff -u -p -r1.86 -r1.87
+--- a/src/core/dhcp.c	4 Mar 2008 14:25:58 -0000	1.86
++++ b/src/core/dhcp.c	15 Apr 2008 17:24:55 -0000	1.87
+@@ -568,6 +568,8 @@ dhcp_start(struct netif *netif)
+   LWIP_ERROR("netif != NULL", (netif != NULL), return ERR_ARG;);
+   dhcp = netif->dhcp;
+   LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_start(netif=%p) %c%c%"U16_F"\n", (void*)netif, netif->name[0], netif->name[1], (u16_t)netif->num));
++  /* Remove the flag that says this netif is handled by DHCP,
++     it is set when we succeeded starting. */
+   netif->flags &= ~NETIF_FLAG_DHCP;
+
+   /* no DHCP client attached yet? */
+@@ -609,6 +611,7 @@ dhcp_start(struct netif *netif)
+     dhcp_stop(netif);
+     return ERR_MEM;
+   }
++  /* Set the flag that says this netif is handled by DHCP. */
+   netif->flags |= NETIF_FLAG_DHCP;
+   return result;
+ }
+@@ -1063,6 +1066,8 @@ dhcp_stop(struct netif *netif)
+ {
+   struct dhcp *dhcp = netif->dhcp;
+   LWIP_ERROR("dhcp_stop: netif != NULL", (netif != NULL), return;);
++  /* Remove the flag that says this netif is handled by DHCP. */
++  netif->flags &= ~NETIF_FLAG_DHCP;
+
+   LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | 3, ("dhcp_stop()\n"));
+   /* netif is DHCP configured? */
+Index: src/core/mem.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/core/mem.c,v
+retrieving revision 1.59
+retrieving revision 1.62
+diff -u -p -r1.59 -r1.62
+--- a/src/core/mem.c	4 Mar 2008 16:31:32 -0000	1.59
++++ b/src/core/mem.c	30 Jun 2008 18:16:51 -0000	1.62
+@@ -177,9 +177,36 @@ static u8_t *ram;
+ static struct mem *ram_end;
+ /** pointer to the lowest free block, this is used for faster search */
+ static struct mem *lfree;
++
+ /** concurrent access protection */
+ static sys_sem_t mem_sem;
+
++#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT
++
++static volatile u8_t mem_free_count;
++
++/* Allow mem_free from other (e.g. interrupt) context */
++#define LWIP_MEM_FREE_DECL_PROTECT()  SYS_ARCH_DECL_PROTECT(lev_free)
++#define LWIP_MEM_FREE_PROTECT()       SYS_ARCH_PROTECT(lev_free)
++#define LWIP_MEM_FREE_UNPROTECT()     SYS_ARCH_UNPROTECT(lev_free)
++#define LWIP_MEM_ALLOC_DECL_PROTECT() SYS_ARCH_DECL_PROTECT(lev_alloc)
++#define LWIP_MEM_ALLOC_PROTECT()      SYS_ARCH_PROTECT(lev_alloc)
++#define LWIP_MEM_ALLOC_UNPROTECT()    SYS_ARCH_UNPROTECT(lev_alloc)
++
++#else /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */
++
++/* Protect the heap only by using a semaphore */
++#define LWIP_MEM_FREE_DECL_PROTECT()
++#define LWIP_MEM_FREE_PROTECT()    sys_arch_sem_wait(mem_sem, 0)
++#define LWIP_MEM_FREE_UNPROTECT()  sys_sem_signal(mem_sem)
++/* mem_malloc is protected using semaphore AND LWIP_MEM_ALLOC_PROTECT */
++#define LWIP_MEM_ALLOC_DECL_PROTECT()
++#define LWIP_MEM_ALLOC_PROTECT()
++#define LWIP_MEM_ALLOC_UNPROTECT()
++
++#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */
++
++
+ /**
+  * "Plug holes" by combining adjacent empty struct mems.
+  * After this function is through, there should not exist
+@@ -255,9 +282,7 @@ mem_init(void)
+   /* initialize the lowest-free pointer to the start of the heap */
+   lfree = (struct mem *)ram;
+
+-#if MEM_STATS
+-  lwip_stats.mem.avail = MEM_SIZE_ALIGNED;
+-#endif /* MEM_STATS */
++  MEM_STATS_AVAIL(avail, MEM_SIZE_ALIGNED);
+ }
+
+ /**
+@@ -270,6 +295,7 @@ void
+ mem_free(void *rmem)
+ {
+   struct mem *mem;
++  LWIP_MEM_FREE_DECL_PROTECT();
+
+   if (rmem == NULL) {
+     LWIP_DEBUGF(MEM_DEBUG | LWIP_DBG_TRACE | 2, ("mem_free(p == NULL) was called.\n"));
+@@ -277,20 +303,20 @@ mem_free(void *rmem)
+   }
+   LWIP_ASSERT("mem_free: sanity check alignment", (((mem_ptr_t)rmem) & (MEM_ALIGNMENT-1)) == 0);
+
+-  /* protect the heap from concurrent access */
+-  sys_arch_sem_wait(mem_sem, 0);
+-
+   LWIP_ASSERT("mem_free: legal memory", (u8_t *)rmem >= (u8_t *)ram &&
+     (u8_t *)rmem < (u8_t *)ram_end);
+
+   if ((u8_t *)rmem < (u8_t *)ram || (u8_t *)rmem >= (u8_t *)ram_end) {
++    SYS_ARCH_DECL_PROTECT(lev);
+     LWIP_DEBUGF(MEM_DEBUG | 3, ("mem_free: illegal memory\n"));
+-#if MEM_STATS
+-    ++lwip_stats.mem.err;
+-#endif /* MEM_STATS */
+-    sys_sem_signal(mem_sem);
++    /* protect mem stats from concurrent access */
++    SYS_ARCH_PROTECT(lev);
++    MEM_STATS_INC(illegal);
++    SYS_ARCH_UNPROTECT(lev);
+     return;
+   }
++  /* protect the heap from concurrent access */
++  LWIP_MEM_FREE_PROTECT();
+   /* Get the corresponding struct mem ... */
+   mem = (struct mem *)((u8_t *)rmem - SIZEOF_STRUCT_MEM);
+   /* ... which has to be in a used state ... */
+@@ -303,13 +329,14 @@ mem_free(void *rmem)
+     lfree = mem;
+   }
+
+-#if MEM_STATS
+-  lwip_stats.mem.used -= mem->next - ((u8_t *)mem - ram);
+-#endif /* MEM_STATS */
++  MEM_STATS_DEC_USED(used, mem->next - ((u8_t *)mem - ram));
+
+   /* finally, see if prev or next are free also */
+   plug_holes(mem);
+-  sys_sem_signal(mem_sem);
++#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT
++  mem_free_count = 1;
++#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */
++  LWIP_MEM_FREE_UNPROTECT();
+ }
+
+ /**
+@@ -321,6 +348,8 @@ mem_free(void *rmem)
+  * @param newsize required size after shrinking (needs to be smaller than or
+  *                equal to the previous size)
+  * @return for compatibility reasons: is always == rmem, at the moment
++ *         or NULL if newsize is > old size, in which case rmem is NOT touched
++ *         or freed!
+  */
+ void *
+ mem_realloc(void *rmem, mem_size_t newsize)
+@@ -328,6 +357,8 @@ mem_realloc(void *rmem, mem_size_t newsi
+   mem_size_t size;
+   mem_size_t ptr, ptr2;
+   struct mem *mem, *mem2;
++  /* use the FREE_PROTECT here: it protects with sem OR SYS_ARCH_PROTECT */
++  LWIP_MEM_FREE_DECL_PROTECT();
+
+   /* Expand the size of the allocated memory region so that we can
+      adjust for alignment. */
+@@ -346,7 +377,12 @@ mem_realloc(void *rmem, mem_size_t newsi
+    (u8_t *)rmem < (u8_t *)ram_end);
+
+   if ((u8_t *)rmem < (u8_t *)ram || (u8_t *)rmem >= (u8_t *)ram_end) {
++    SYS_ARCH_DECL_PROTECT(lev);
+     LWIP_DEBUGF(MEM_DEBUG | 3, ("mem_realloc: illegal memory\n"));
++    /* protect mem stats from concurrent access */
++    SYS_ARCH_PROTECT(lev);
++    MEM_STATS_INC(illegal);
++    SYS_ARCH_UNPROTECT(lev);
+     return rmem;
+   }
+   /* Get the corresponding struct mem ... */
+@@ -366,11 +402,9 @@ mem_realloc(void *rmem, mem_size_t newsi
+   }
+
+   /* protect the heap from concurrent access */
+-  sys_arch_sem_wait(mem_sem, 0);
++  LWIP_MEM_FREE_PROTECT();
+
+-#if MEM_STATS
+-  lwip_stats.mem.used -= (size - newsize);
+-#endif /* MEM_STATS */
++  MEM_STATS_DEC_USED(used, (size - newsize));
+
+   mem2 = (struct mem *)&ram[mem->next];
+   if(mem2->used == 0) {
+@@ -426,7 +460,10 @@ mem_realloc(void *rmem, mem_size_t newsi
+     -> don't do anyhting.
+     -> the remaining space stays unused since it is too small
+   } */
+-  sys_sem_signal(mem_sem);
++#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT
++  mem_free_count = 1;
++#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */
++  LWIP_MEM_FREE_UNPROTECT();
+   return rmem;
+ }
+
+@@ -444,6 +481,10 @@ mem_malloc(mem_size_t size)
+ {
+   mem_size_t ptr, ptr2;
+   struct mem *mem, *mem2;
++#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT
++  u8_t local_mem_free_count = 0;
++#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */
++  LWIP_MEM_ALLOC_DECL_PROTECT();
+
+   if (size == 0) {
+     return NULL;
+@@ -464,88 +505,101 @@ mem_malloc(mem_size_t size)
+
+   /* protect the heap from concurrent access */
+   sys_arch_sem_wait(mem_sem, 0);
++  LWIP_MEM_ALLOC_PROTECT();
++#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT
++  /* run as long as a mem_free disturbed mem_malloc */
++  do {
++    local_mem_free_count = 0;
++#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */
++
++    /* Scan through the heap searching for a free block that is big enough,
++     * beginning with the lowest free block.
++     */
++    for (ptr = (u8_t *)lfree - ram; ptr < MEM_SIZE_ALIGNED - size;
++         ptr = ((struct mem *)&ram[ptr])->next) {
++      mem = (struct mem *)&ram[ptr];
++#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT
++      mem_free_count = 0;
++      LWIP_MEM_ALLOC_UNPROTECT();
++      /* allow mem_free to run */
++      LWIP_MEM_ALLOC_PROTECT();
++      if (mem_free_count != 0) {
++        local_mem_free_count = mem_free_count;
++      }
++      mem_free_count = 0;
++#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */
+
+-  /* Scan through the heap searching for a free block that is big enough,
+-   * beginning with the lowest free block.
+-   */
+-  for (ptr = (u8_t *)lfree - ram; ptr < MEM_SIZE_ALIGNED - size;
+-       ptr = ((struct mem *)&ram[ptr])->next) {
+-    mem = (struct mem *)&ram[ptr];
+-
+-    if ((!mem->used) &&
+-        (mem->next - (ptr + SIZEOF_STRUCT_MEM)) >= size) {
+-      /* mem is not used and at least perfect fit is possible:
+-       * mem->next - (ptr + SIZEOF_STRUCT_MEM) gives us the 'user data size' of mem */
+-
+-      if (mem->next - (ptr + SIZEOF_STRUCT_MEM) >= (size + SIZEOF_STRUCT_MEM + MIN_SIZE_ALIGNED)) {
+-        /* (in addition to the above, we test if another struct mem (SIZEOF_STRUCT_MEM) containing
+-         * at least MIN_SIZE_ALIGNED of data also fits in the 'user data space' of 'mem')
+-         * -> split large block, create empty remainder,
+-         * remainder must be large enough to contain MIN_SIZE_ALIGNED data: if
+-         * mem->next - (ptr + (2*SIZEOF_STRUCT_MEM)) == size,
+-         * struct mem would fit in but no data between mem2 and mem2->next
+-         * @todo we could leave out MIN_SIZE_ALIGNED. We would create an empty
+-         *       region that couldn't hold data, but when mem->next gets freed,
+-         *       the 2 regions would be combined, resulting in more free memory
+-         */
+-        ptr2 = ptr + SIZEOF_STRUCT_MEM + size;
+-        /* create mem2 struct */
+-        mem2 = (struct mem *)&ram[ptr2];
+-        mem2->used = 0;
+-        mem2->next = mem->next;
+-        mem2->prev = ptr;
+-        /* and insert it between mem and mem->next */
+-        mem->next = ptr2;
+-        mem->used = 1;
+-
+-        if (mem2->next != MEM_SIZE_ALIGNED) {
+-          ((struct mem *)&ram[mem2->next])->prev = ptr2;
+-        }
+-#if MEM_STATS
+-        lwip_stats.mem.used += (size + SIZEOF_STRUCT_MEM);
+-        if (lwip_stats.mem.max < lwip_stats.mem.used) {
+-          lwip_stats.mem.max = lwip_stats.mem.used;
++      if ((!mem->used) &&
++          (mem->next - (ptr + SIZEOF_STRUCT_MEM)) >= size) {
++        /* mem is not used and at least perfect fit is possible:
++         * mem->next - (ptr + SIZEOF_STRUCT_MEM) gives us the 'user data size' of mem */
++
++        if (mem->next - (ptr + SIZEOF_STRUCT_MEM) >= (size + SIZEOF_STRUCT_MEM + MIN_SIZE_ALIGNED)) {
++          /* (in addition to the above, we test if another struct mem (SIZEOF_STRUCT_MEM) containing
++           * at least MIN_SIZE_ALIGNED of data also fits in the 'user data space' of 'mem')
++           * -> split large block, create empty remainder,
++           * remainder must be large enough to contain MIN_SIZE_ALIGNED data: if
++           * mem->next - (ptr + (2*SIZEOF_STRUCT_MEM)) == size,
++           * struct mem would fit in but no data between mem2 and mem2->next
++           * @todo we could leave out MIN_SIZE_ALIGNED. We would create an empty
++           *       region that couldn't hold data, but when mem->next gets freed,
++           *       the 2 regions would be combined, resulting in more free memory
++           */
++          ptr2 = ptr + SIZEOF_STRUCT_MEM + size;
++          /* create mem2 struct */
++          mem2 = (struct mem *)&ram[ptr2];
++          mem2->used = 0;
++          mem2->next = mem->next;
++          mem2->prev = ptr;
++          /* and insert it between mem and mem->next */
++          mem->next = ptr2;
++          mem->used = 1;
++
++          if (mem2->next != MEM_SIZE_ALIGNED) {
++            ((struct mem *)&ram[mem2->next])->prev = ptr2;
++          }
++          MEM_STATS_INC_USED(used, (size + SIZEOF_STRUCT_MEM));
++        } else {
++          /* (a mem2 struct does no fit into the user data space of mem and mem->next will always
++           * be used at this point: if not we have 2 unused structs in a row, plug_holes should have
++           * take care of this).
++           * -> near fit or excact fit: do not split, no mem2 creation
++           * also can't move mem->next directly behind mem, since mem->next
++           * will always be used at this point!
++           */
++          mem->used = 1;
++          MEM_STATS_INC_USED(used, mem->next - ((u8_t *)mem - ram));
+         }
+-#endif /* MEM_STATS */
+-      } else {
+-        /* (a mem2 struct does no fit into the user data space of mem and mem->next will always
+-         * be used at this point: if not we have 2 unused structs in a row, plug_holes should have
+-         * take care of this).
+-         * -> near fit or excact fit: do not split, no mem2 creation
+-         * also can't move mem->next directly behind mem, since mem->next
+-         * will always be used at this point!
+-         */
+-        mem->used = 1;
+-#if MEM_STATS
+-        lwip_stats.mem.used += mem->next - ((u8_t *)mem - ram);
+-        if (lwip_stats.mem.max < lwip_stats.mem.used) {
+-          lwip_stats.mem.max = lwip_stats.mem.used;
+-        }
+-#endif /* MEM_STATS */
+-      }
+
+-      if (mem == lfree) {
+-        /* Find next free block after mem and update lowest free pointer */
+-        while (lfree->used && lfree != ram_end) {
+-          lfree = (struct mem *)&ram[lfree->next];
++        if (mem == lfree) {
++          /* Find next free block after mem and update lowest free pointer */
++          while (lfree->used && lfree != ram_end) {
++            LWIP_MEM_ALLOC_UNPROTECT();
++            /* prevent high interrupt latency... */
++            LWIP_MEM_ALLOC_PROTECT();
++            lfree = (struct mem *)&ram[lfree->next];
++          }
++          LWIP_ASSERT("mem_malloc: !lfree->used", ((lfree == ram_end) || (!lfree->used)));
+         }
+-        LWIP_ASSERT("mem_malloc: !lfree->used", ((lfree == ram_end) || (!lfree->used)));
+-      }
+-      sys_sem_signal(mem_sem);
+-      LWIP_ASSERT("mem_malloc: allocated memory not above ram_end.",
+-       (mem_ptr_t)mem + SIZEOF_STRUCT_MEM + size <= (mem_ptr_t)ram_end);
+-      LWIP_ASSERT("mem_malloc: allocated memory properly aligned.",
+-       (unsigned long)((u8_t *)mem + SIZEOF_STRUCT_MEM) % MEM_ALIGNMENT == 0);
+-      LWIP_ASSERT("mem_malloc: sanity check alignment",
+-        (((mem_ptr_t)mem) & (MEM_ALIGNMENT-1)) == 0);
++        LWIP_MEM_ALLOC_UNPROTECT();
++        sys_sem_signal(mem_sem);
++        LWIP_ASSERT("mem_malloc: allocated memory not above ram_end.",
++         (mem_ptr_t)mem + SIZEOF_STRUCT_MEM + size <= (mem_ptr_t)ram_end);
++        LWIP_ASSERT("mem_malloc: allocated memory properly aligned.",
++         (unsigned long)((u8_t *)mem + SIZEOF_STRUCT_MEM) % MEM_ALIGNMENT == 0);
++        LWIP_ASSERT("mem_malloc: sanity check alignment",
++          (((mem_ptr_t)mem) & (MEM_ALIGNMENT-1)) == 0);
+
+-      return (u8_t *)mem + SIZEOF_STRUCT_MEM;
++        return (u8_t *)mem + SIZEOF_STRUCT_MEM;
++      }
+     }
+-  }
++#if LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT
++    /* if we got interrupted by a mem_free, try again */
++  } while(local_mem_free_count != 0);
++#endif /* LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT */
+   LWIP_DEBUGF(MEM_DEBUG | 2, ("mem_malloc: could not allocate %"S16_F" bytes\n", (s16_t)size));
+-#if MEM_STATS
+-  ++lwip_stats.mem.err;
+-#endif /* MEM_STATS */
++  MEM_STATS_INC(err);
++  LWIP_MEM_ALLOC_UNPROTECT();
+   sys_sem_signal(mem_sem);
+   return NULL;
+ }
+Index: src/core/memp.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/core/memp.c,v
+retrieving revision 1.55
+retrieving revision 1.56
+diff -u -p -r1.55 -r1.56
+--- a/src/core/memp.c	25 Nov 2007 10:43:28 -0000	1.55
++++ b/src/core/memp.c	27 Jun 2008 18:37:54 -0000	1.56
+@@ -252,13 +252,12 @@ memp_init(void)
+   struct memp *memp;
+   u16_t i, j;
+
+-#if MEMP_STATS
+   for (i = 0; i < MEMP_MAX; ++i) {
+-    lwip_stats.memp[i].used = lwip_stats.memp[i].max =
+-      lwip_stats.memp[i].err = 0;
+-    lwip_stats.memp[i].avail = memp_num[i];
++    MEMP_STATS_AVAIL(used, i, 0);
++    MEMP_STATS_AVAIL(max, i, 0);
++    MEMP_STATS_AVAIL(err, i, 0);
++    MEMP_STATS_AVAIL(avail, i, memp_num[i]);
+   }
+-#endif /* MEMP_STATS */
+
+   memp = LWIP_MEM_ALIGN(memp_memory);
+   /* for every pool: */
+@@ -315,20 +314,13 @@ memp_malloc_fn(memp_t type, const char*
+     memp->file = file;
+     memp->line = line;
+ #endif /* MEMP_OVERFLOW_CHECK */
+-#if MEMP_STATS
+-    ++lwip_stats.memp[type].used;
+-    if (lwip_stats.memp[type].used > lwip_stats.memp[type].max) {
+-      lwip_stats.memp[type].max = lwip_stats.memp[type].used;
+-    }
+-#endif /* MEMP_STATS */
++    MEMP_STATS_INC_USED(used, type);
+     LWIP_ASSERT("memp_malloc: memp properly aligned",
+                 ((mem_ptr_t)memp % MEM_ALIGNMENT) == 0);
+     memp = (struct memp*)((u8_t*)memp + MEMP_SIZE);
+   } else {
+     LWIP_DEBUGF(MEMP_DEBUG | 2, ("memp_malloc: out of memory in pool %s\n", memp_desc[type]));
+-#if MEMP_STATS
+-    ++lwip_stats.memp[type].err;
+-#endif /* MEMP_STATS */
++    MEMP_STATS_INC(err, type);
+   }
+
+   SYS_ARCH_UNPROTECT(old_level);
+@@ -365,9 +357,7 @@ memp_free(memp_t type, void *mem)
+ #endif /* MEMP_OVERFLOW_CHECK >= 2 */
+ #endif /* MEMP_OVERFLOW_CHECK */
+
+-#if MEMP_STATS
+-  lwip_stats.memp[type].used--;
+-#endif /* MEMP_STATS */
++  MEMP_STATS_DEC(used, type);
+
+   memp->next = memp_tab[type];
+   memp_tab[type] = memp;
+Index: src/core/netif.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/core/netif.c,v
+retrieving revision 1.65
+retrieving revision 1.68
+diff -u -p -r1.65 -r1.68
+--- a/src/core/netif.c	9 Oct 2007 20:00:55 -0000	1.65
++++ b/src/core/netif.c	19 Jun 2008 16:27:18 -0000	1.68
+@@ -45,6 +45,12 @@
+ #include "lwip/snmp.h"
+ #include "lwip/igmp.h"
+ #include "netif/etharp.h"
++#if ENABLE_LOOPBACK
++#include "lwip/sys.h"
++#if LWIP_NETIF_LOOPBACK_MULTITHREADING
++#include "lwip/tcpip.h"
++#endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
++#endif /* ENABLE_LOOPBACK */
+
+ #if LWIP_NETIF_STATUS_CALLBACK
+ #define NETIF_STATUS_CALLBACK(n) { if (n->status_callback) (n->status_callback)(n); }
+@@ -106,6 +112,10 @@ netif_add(struct netif *netif, struct ip
+ #if LWIP_IGMP
+   netif->igmp_mac_filter = NULL;
+ #endif /* LWIP_IGMP */
++#if ENABLE_LOOPBACK
++  netif->loop_first = NULL;
++  netif->loop_last = NULL;
++#endif /* ENABLE_LOOPBACK */
+
+   /* remember netif specific state information data */
+   netif->state = state;
+@@ -114,6 +124,9 @@ netif_add(struct netif *netif, struct ip
+ #if LWIP_NETIF_HWADDRHINT
+   netif->addr_hint = NULL;
+ #endif /* LWIP_NETIF_HWADDRHINT*/
++#if ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS
++  netif->loop_cnt_current = 0;
++#endif /* ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS */
+
+   netif_set_addr(netif, ipaddr, netmask, gw);
+
+@@ -493,7 +506,158 @@ u8_t netif_is_link_up(struct netif *neti
+  */
+ void netif_set_link_callback(struct netif *netif, void (* link_callback)(struct netif *netif ))
+ {
+-    if ( netif )
+-        netif->link_callback = link_callback;
++  if (netif) {
++    netif->link_callback = link_callback;
++  }
+ }
+ #endif /* LWIP_NETIF_LINK_CALLBACK */
++
++#if ENABLE_LOOPBACK
++/**
++ * Send an IP packet to be received on the same netif (loopif-like).
++ * The pbuf is simply copied and handed back to netif->input.
++ * In multithreaded mode, this is done directly since netif->input must put
++ * the packet on a queue.
++ * In callback mode, the packet is put on an internal queue and is fed to
++ * netif->input by netif_poll().
++ *
++ * @param netif the lwip network interface structure
++ * @param p the (IP) packet to 'send'
++ * @param ipaddr the ip address to send the packet to (not used)
++ * @return ERR_OK if the packet has been sent
++ *         ERR_MEM if the pbuf used to copy the packet couldn't be allocated
++ */
++err_t
++netif_loop_output(struct netif *netif, struct pbuf *p,
++       struct ip_addr *ipaddr)
++{
++  struct pbuf *r;
++  err_t err;
++  struct pbuf *last;
++#if LWIP_LOOPBACK_MAX_PBUFS
++  u8_t clen = 0;
++#endif /* LWIP_LOOPBACK_MAX_PBUFS */
++  SYS_ARCH_DECL_PROTECT(lev);
++  LWIP_UNUSED_ARG(ipaddr);
++
++  /* Allocate a new pbuf */
++  r = pbuf_alloc(PBUF_LINK, p->tot_len, PBUF_RAM);
++  if (r == NULL) {
++    return ERR_MEM;
++  }
++#if LWIP_LOOPBACK_MAX_PBUFS
++  clen = pbuf_clen(r);
++  /* check for overflow or too many pbuf on queue */
++  if(((netif->loop_cnt_current + clen) < netif->loop_cnt_current) ||
++    ((netif->loop_cnt_current + clen) > LWIP_LOOPBACK_MAX_PBUFS)) {
++      pbuf_free(r);
++      r = NULL;
++      return ERR_MEM;
++  }
++  netif->loop_cnt_current += clen;
++#endif /* LWIP_LOOPBACK_MAX_PBUFS */
++
++  /* Copy the whole pbuf queue p into the single pbuf r */
++  if ((err = pbuf_copy(r, p)) != ERR_OK) {
++    pbuf_free(r);
++    r = NULL;
++    return err;
++  }
++
++  /* Put the packet on a linked list which gets emptied through calling
++     netif_poll(). */
++
++  /* let last point to the last pbuf in chain r */
++  for (last = r; last->next != NULL; last = last->next);
++
++  SYS_ARCH_PROTECT(lev);
++  if(netif->loop_first != NULL) {
++    LWIP_ASSERT("if first != NULL, last must also be != NULL", netif->loop_last != NULL);
++    netif->loop_last->next = r;
++    netif->loop_last = last;
++  } else {
++    netif->loop_first = r;
++    netif->loop_last = last;
++  }
++  SYS_ARCH_UNPROTECT(lev);
++
++#if LWIP_NETIF_LOOPBACK_MULTITHREADING
++  /* For multithreading environment, schedule a call to netif_poll */
++  tcpip_callback(netif_poll, netif);
++#endif /* LWIP_NETIF_LOOPBACK_MULTITHREADING */
++
++  return ERR_OK;
++}
++
++/**
++ * Call netif_poll() in the main loop of your application. This is to prevent
++ * reentering non-reentrant functions like tcp_input(). Packets passed to
++ * netif_loop_output() are put on a list that is passed to netif->input() by
++ * netif_poll().
++ */
++void
++netif_poll(struct netif *netif)
++{
++  struct pbuf *in;
++  SYS_ARCH_DECL_PROTECT(lev);
++
++  do {
++    /* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */
++    SYS_ARCH_PROTECT(lev);
++    in = netif->loop_first;
++    if(in != NULL) {
++      struct pbuf *in_end = in;
++#if LWIP_LOOPBACK_MAX_PBUFS
++      u8_t clen = pbuf_clen(in);
++      /* adjust the number of pbufs on queue */
++      LWIP_ASSERT("netif->loop_cnt_current underflow",
++        ((netif->loop_cnt_current - clen) < netif->loop_cnt_current));
++      netif->loop_cnt_current -= clen;
++#endif /* LWIP_LOOPBACK_MAX_PBUFS */
++      while(in_end->len != in_end->tot_len) {
++        LWIP_ASSERT("bogus pbuf: len != tot_len but next == NULL!", in_end->next != NULL);
++        in_end = in_end->next;
++      }
++      /* 'in_end' now points to the last pbuf from 'in' */
++      if(in_end == netif->loop_last) {
++        /* this was the last pbuf in the list */
++        netif->loop_first = netif->loop_last = NULL;
++      } else {
++        /* pop the pbuf off the list */
++        netif->loop_first = in_end->next;
++        LWIP_ASSERT("should not be null since first != last!", netif->loop_first != NULL);
++      }
++      /* De-queue the pbuf from its successors on the 'loop_' list. */
++      in_end->next = NULL;
++    }
++    SYS_ARCH_UNPROTECT(lev);
++
++    if(in != NULL) {
++      /* loopback packets are always IP packets! */
++      if(ip_input(in, netif) != ERR_OK) {
++        pbuf_free(in);
++      }
++      /* Don't reference the packet any more! */
++      in = NULL;
++    }
++  /* go on while there is a packet on the list */
++  } while(netif->loop_first != NULL);
++}
++
++#if !LWIP_NETIF_LOOPBACK_MULTITHREADING
++/**
++ * Calls netif_poll() for every netif on the netif_list.
++ */
++void
++netif_poll_all(void)
++{
++  struct netif *netif = netif_list;
++  /* loop through netifs */
++  while (netif != NULL) {
++    netif_poll(netif);
++    /* proceed to next network interface */
++    netif = netif->next;
++  }
++}
++#endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */
++#endif /* ENABLE_LOOPBACK */
+Index: src/core/pbuf.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/core/pbuf.c,v
+retrieving revision 1.127
+retrieving revision 1.128
+diff -u -p -r1.127 -r1.128
+--- a/src/core/pbuf.c	4 Mar 2008 16:37:46 -0000	1.127
++++ b/src/core/pbuf.c	1 Apr 2008 19:05:40 -0000	1.128
+@@ -667,8 +667,8 @@ pbuf_dechain(struct pbuf *p)
+  *
+  * @note Only one packet is copied, no packet queue!
+  *
+- * @param p_to pbuf source of the copy
+- * @param p_from pbuf destination of the copy
++ * @param p_to pbuf destination of the copy
++ * @param p_from pbuf source of the copy
+  *
+  * @return ERR_OK if pbuf was copied
+  *         ERR_ARG if one of the pbufs is NULL or p_to is not big
+Index: src/core/stats.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/core/stats.c,v
+retrieving revision 1.27
+retrieving revision 1.28
+diff -u -p -r1.27 -r1.28
+--- a/src/core/stats.c	4 Mar 2008 16:31:32 -0000	1.27
++++ b/src/core/stats.c	27 Jun 2008 18:37:54 -0000	1.28
+@@ -54,7 +54,6 @@ stats_display_proto(struct stats_proto *
+ {
+   LWIP_PLATFORM_DIAG(("\n%s\n\t", name));
+   LWIP_PLATFORM_DIAG(("xmit: %"STAT_COUNTER_F"\n\t", proto->xmit));
+-  LWIP_PLATFORM_DIAG(("rexmit: %"STAT_COUNTER_F"\n\t", proto->rexmit));
+   LWIP_PLATFORM_DIAG(("recv: %"STAT_COUNTER_F"\n\t", proto->recv));
+   LWIP_PLATFORM_DIAG(("fw: %"STAT_COUNTER_F"\n\t", proto->fw));
+   LWIP_PLATFORM_DIAG(("drop: %"STAT_COUNTER_F"\n\t", proto->drop));
+@@ -68,6 +67,7 @@ stats_display_proto(struct stats_proto *
+   LWIP_PLATFORM_DIAG(("cachehit: %"STAT_COUNTER_F"\n", proto->cachehit));
+ }
+
++#if IGMP_STATS
+ void
+ stats_display_igmp(struct stats_igmp *igmp)
+ {
+@@ -82,7 +82,9 @@ stats_display_igmp(struct stats_igmp *ig
+   LWIP_PLATFORM_DIAG(("report_rxed: %"STAT_COUNTER_F"\n\t", igmp->report_rxed));
+   LWIP_PLATFORM_DIAG(("group_query_rxed: %"STAT_COUNTER_F"\n", igmp->group_query_rxed));
+ }
++#endif /* IGMP_STATS */
+
++#if MEM_STATS || MEMP_STATS
+ void
+ stats_display_mem(struct stats_mem *mem, char *name)
+ {
+@@ -93,48 +95,53 @@ stats_display_mem(struct stats_mem *mem,
+   LWIP_PLATFORM_DIAG(("err: %"U32_F"\n", (u32_t)mem->err));
+ }
+
++#if MEMP_STATS
+ void
+-stats_display(void)
++stats_display_memp(struct stats_mem *mem, int index)
+ {
+-#if MEMP_STATS
+-  s16_t i;
+   char * memp_names[] = {
+ #define LWIP_MEMPOOL(name,num,size,desc) desc,
+ #include "lwip/memp_std.h"
+   };
+-#endif
+-#if LINK_STATS
+-  stats_display_proto(&lwip_stats.link, "LINK");
+-#endif
+-#if ETHARP_STATS
+-  stats_display_proto(&lwip_stats.etharp, "ETHARP");
+-#endif
+-#if IPFRAG_STATS
+-  stats_display_proto(&lwip_stats.ip_frag, "IP_FRAG");
+-#endif
+-#if IP_STATS
+-  stats_display_proto(&lwip_stats.ip, "IP");
+-#endif
+-#if ICMP_STATS
+-  stats_display_proto(&lwip_stats.icmp, "ICMP");
+-#endif
+-#if IGMP_STATS
+-  stats_display_igmp(&lwip_stats.igmp);
+-#endif
+-#if UDP_STATS
+-  stats_display_proto(&lwip_stats.udp, "UDP");
+-#endif
+-#if TCP_STATS
+-  stats_display_proto(&lwip_stats.tcp, "TCP");
+-#endif
+-#if MEM_STATS
+-  stats_display_mem(&lwip_stats.mem, "HEAP");
+-#endif
+-#if MEMP_STATS
++  if(index < MEMP_MAX) {
++    stats_display_mem(mem, memp_names[index]);
++  }
++}
++#endif /* MEMP_STATS */
++#endif /* MEM_STATS || MEMP_STATS */
++
++#if SYS_STATS
++void
++stats_display_sys(struct stats_sys *sys)
++{
++  LWIP_PLATFORM_DIAG(("\nSYS\n\t"));
++  LWIP_PLATFORM_DIAG(("sem.used: %"U32_F"\n\t", (u32_t)sys->sem.used));
++  LWIP_PLATFORM_DIAG(("sem.max:  %"U32_F"\n\t", (u32_t)sys->sem.max));
++  LWIP_PLATFORM_DIAG(("sem.err:  %"U32_F"\n\t", (u32_t)sys->sem.err));
++  LWIP_PLATFORM_DIAG(("mbox.used: %"U32_F"\n\t", (u32_t)sys->mbox.used));
++  LWIP_PLATFORM_DIAG(("mbox.max:  %"U32_F"\n\t", (u32_t)sys->mbox.max));
++  LWIP_PLATFORM_DIAG(("mbox.err:  %"U32_F"\n\t", (u32_t)sys->mbox.err));
++}
++#endif /* SYS_STATS */
++
++void
++stats_display(void)
++{
++  s16_t i;
++
++  LINK_STATS_DISPLAY();
++  ETHARP_STATS_DISPLAY();
++  IPFRAG_STATS_DISPLAY();
++  IP_STATS_DISPLAY();
++  IGMP_STATS_DISPLAY();
++  ICMP_STATS_DISPLAY();
++  UDP_STATS_DISPLAY();
++  TCP_STATS_DISPLAY();
++  MEM_STATS_DISPLAY();
+   for (i = 0; i < MEMP_MAX; i++) {
+-    stats_display_mem(&lwip_stats.memp[i], memp_names[i]);
++    MEMP_STATS_DISPLAY(i);
+   }
+-#endif
++  SYS_STATS_DISPLAY();
+ }
+ #endif /* LWIP_STATS_DISPLAY */
+
+Index: src/core/sys.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/core/sys.c,v
+retrieving revision 1.32
+retrieving revision 1.33
+diff -u -p -r1.32 -r1.33
+--- a/src/core/sys.c	25 Nov 2007 13:57:05 -0000	1.32
++++ b/src/core/sys.c	16 Jul 2008 20:36:12 -0000	1.33
+@@ -65,7 +65,7 @@ struct sswt_cb
+ void
+ sys_mbox_fetch(sys_mbox_t mbox, void **msg)
+ {
+-  u32_t time;
++  u32_t time_needed;
+   struct sys_timeouts *timeouts;
+   struct sys_timeo *tmptimeout;
+   sys_timeout_handler h;
+@@ -76,18 +76,18 @@ sys_mbox_fetch(sys_mbox_t mbox, void **m
+
+   if (!timeouts || !timeouts->next) {
+     UNLOCK_TCPIP_CORE();
+-    time = sys_arch_mbox_fetch(mbox, msg, 0);
++    time_needed = sys_arch_mbox_fetch(mbox, msg, 0);
+     LOCK_TCPIP_CORE();
+   } else {
+     if (timeouts->next->time > 0) {
+       UNLOCK_TCPIP_CORE();
+-      time = sys_arch_mbox_fetch(mbox, msg, timeouts->next->time);
++      time_needed = sys_arch_mbox_fetch(mbox, msg, timeouts->next->time);
+       LOCK_TCPIP_CORE();
+     } else {
+-      time = SYS_ARCH_TIMEOUT;
++      time_needed = SYS_ARCH_TIMEOUT;
+     }
+
+-    if (time == SYS_ARCH_TIMEOUT) {
++    if (time_needed == SYS_ARCH_TIMEOUT) {
+       /* If time == SYS_ARCH_TIMEOUT, a timeout occured before a message
+          could be fetched. We should now call the timeout handler and
+          deallocate the memory allocated for the timeout. */
+@@ -107,8 +107,8 @@ sys_mbox_fetch(sys_mbox_t mbox, void **m
+       /* If time != SYS_ARCH_TIMEOUT, a message was received before the timeout
+          occured. The time variable is set to the number of
+          milliseconds we waited for the message. */
+-      if (time < timeouts->next->time) {
+-        timeouts->next->time -= time;
++      if (time_needed < timeouts->next->time) {
++        timeouts->next->time -= time_needed;
+       } else {
+         timeouts->next->time = 0;
+       }
+@@ -125,7 +125,7 @@ sys_mbox_fetch(sys_mbox_t mbox, void **m
+ void
+ sys_sem_wait(sys_sem_t sem)
+ {
+-  u32_t time;
++  u32_t time_needed;
+   struct sys_timeouts *timeouts;
+   struct sys_timeo *tmptimeout;
+   sys_timeout_handler h;
+@@ -139,12 +139,12 @@ sys_sem_wait(sys_sem_t sem)
+     sys_arch_sem_wait(sem, 0);
+   } else {
+     if (timeouts->next->time > 0) {
+-      time = sys_arch_sem_wait(sem, timeouts->next->time);
++      time_needed = sys_arch_sem_wait(sem, timeouts->next->time);
+     } else {
+-      time = SYS_ARCH_TIMEOUT;
++      time_needed = SYS_ARCH_TIMEOUT;
+     }
+
+-    if (time == SYS_ARCH_TIMEOUT) {
++    if (time_needed == SYS_ARCH_TIMEOUT) {
+       /* If time == SYS_ARCH_TIMEOUT, a timeout occured before a message
+         could be fetched. We should now call the timeout handler and
+         deallocate the memory allocated for the timeout. */
+@@ -164,8 +164,8 @@ sys_sem_wait(sys_sem_t sem)
+       /* If time != SYS_ARCH_TIMEOUT, a message was received before the timeout
+          occured. The time variable is set to the number of
+          milliseconds we waited for the message. */
+-      if (time < timeouts->next->time) {
+-        timeouts->next->time -= time;
++      if (time_needed < timeouts->next->time) {
++        timeouts->next->time -= time_needed;
+       } else {
+         timeouts->next->time = 0;
+       }
+Index: src/core/tcp.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/core/tcp.c,v
+retrieving revision 1.85
+retrieving revision 1.86
+diff -u -p -r1.85 -r1.86
+--- a/src/core/tcp.c	22 Jan 2008 21:15:15 -0000	1.85
++++ b/src/core/tcp.c	26 Mar 2008 11:57:13 -0000	1.86
+@@ -509,7 +509,8 @@ tcp_connect(struct tcp_pcb *pcb, struct
+   pcb->rcv_wnd = TCP_WND;
+   pcb->rcv_ann_wnd = TCP_WND;
+   pcb->snd_wnd = TCP_WND;
+-  /* The send MSS is updated when an MSS option is received. */
++  /* As initial send MSS, we use TCP_MSS but limit it to 536.
++     The send MSS is updated when an MSS option is received. */
+   pcb->mss = (TCP_MSS > 536) ? 536 : TCP_MSS;
+ #if TCP_CALCULATE_EFF_SEND_MSS
+   pcb->mss = tcp_eff_send_mss(pcb->mss, ipaddr);
+@@ -991,7 +992,8 @@ tcp_alloc(u8_t prio)
+     pcb->rcv_ann_wnd = TCP_WND;
+     pcb->tos = 0;
+     pcb->ttl = TCP_TTL;
+-    /* The send MSS is updated when an MSS option is received. */
++    /* As initial send MSS, we use TCP_MSS but limit it to 536.
++       The send MSS is updated when an MSS option is received. */
+     pcb->mss = (TCP_MSS > 536) ? 536 : TCP_MSS;
+     pcb->rto = 3000 / TCP_SLOW_INTERVAL;
+     pcb->sa = 0;
+Index: src/core/tcp_in.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/core/tcp_in.c,v
+retrieving revision 1.97
+retrieving revision 1.100
+diff -u -p -r1.97 -r1.100
+--- a/src/core/tcp_in.c	22 Jan 2008 21:15:15 -0000	1.97
++++ b/src/core/tcp_in.c	24 Jun 2008 15:46:39 -0000	1.100
+@@ -511,7 +511,7 @@ tcp_process(struct tcp_pcb *pcb)
+       }
+     } else {
+       if (TCP_SEQ_BETWEEN(seqno, pcb->rcv_nxt,
+-                          pcb->rcv_nxt+pcb->rcv_ann_wnd)) {
++                          pcb->rcv_nxt+pcb->rcv_wnd)) {
+         acceptable = 1;
+       }
+     }
+@@ -1038,7 +1038,7 @@ tcp_receive(struct tcp_pcb *pcb)
+        and below rcv_nxt + rcv_wnd) in order to be further
+        processed. */
+     if (TCP_SEQ_BETWEEN(seqno, pcb->rcv_nxt,
+-                        pcb->rcv_nxt + pcb->rcv_ann_wnd - 1)){
++                        pcb->rcv_nxt + pcb->rcv_wnd - 1)){
+       if (pcb->rcv_nxt == seqno) {
+         accepted_inseq = 1;
+         /* The incoming segment is the next in sequence. We check if
+@@ -1195,14 +1195,14 @@ tcp_receive(struct tcp_pcb *pcb)
+                   } else {
+                     pcb->ooseq = cseg;
+                   }
+-                }
+-                tcp_seg_free(next);
+-                if (cseg->next != NULL) {
+-                  next = cseg->next;
+-                  if (TCP_SEQ_GT(seqno + cseg->len, next->tcphdr->seqno)) {
+-                    /* We need to trim the incoming segment. */
+-                    cseg->len = (u16_t)(next->tcphdr->seqno - seqno);
+-                    pbuf_realloc(cseg->p, cseg->len);
++                  tcp_seg_free(next);
++                  if (cseg->next != NULL) {
++                    next = cseg->next;
++                    if (TCP_SEQ_GT(seqno + cseg->len, next->tcphdr->seqno)) {
++                      /* We need to trim the incoming segment. */
++                      cseg->len = (u16_t)(next->tcphdr->seqno - seqno);
++                      pbuf_realloc(cseg->p, cseg->len);
++                    }
+                   }
+                 }
+                 break;
+@@ -1282,10 +1282,7 @@ tcp_receive(struct tcp_pcb *pcb)
+
+       }
+     } else {
+-      if(!TCP_SEQ_BETWEEN(seqno, pcb->rcv_nxt,
+-                          pcb->rcv_nxt + pcb->rcv_ann_wnd-1)){
+-        tcp_ack_now(pcb);
+-      }
++      tcp_ack_now(pcb);
+     }
+   } else {
+     /* Segments with length 0 is taken care of here. Segments that
+@@ -1331,7 +1328,8 @@ tcp_parseopt(struct tcp_pcb *pcb)
+         opts[c + 1] == 0x04) {
+         /* An MSS option with the right option length. */
+         mss = (opts[c + 2] << 8) | opts[c + 3];
+-        pcb->mss = mss > TCP_MSS? TCP_MSS: mss;
++        /* Limit the mss to the configured TCP_MSS and prevent division by zero */
++        pcb->mss = ((mss > TCP_MSS) || (mss == 0)) ? TCP_MSS : mss;
+
+         /* And we are done processing options. */
+         break;
+Index: src/core/ipv4/autoip.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/core/ipv4/autoip.c,v
+retrieving revision 1.16
+retrieving revision 1.17
+diff -u -p -r1.16 -r1.17
+--- a/src/core/ipv4/autoip.c	26 Jan 2008 16:11:40 -0000	1.16
++++ b/src/core/ipv4/autoip.c	17 Jun 2008 20:16:23 -0000	1.17
+@@ -395,8 +395,8 @@ autoip_arp_reply(struct netif *netif, st
+     /* Copy struct ip_addr2 to aligned ip_addr, to support compilers without
+      * structure packing (not using structure copy which breaks strict-aliasing rules).
+      */
+-    MEMCPY(&sipaddr, &hdr->sipaddr, sizeof(sipaddr));
+-    MEMCPY(&dipaddr, &hdr->dipaddr, sizeof(dipaddr));
++    SMEMCPY(&sipaddr, &hdr->sipaddr, sizeof(sipaddr));
++    SMEMCPY(&dipaddr, &hdr->dipaddr, sizeof(dipaddr));
+
+     if ((netif->autoip->state == AUTOIP_STATE_PROBING) ||
+         ((netif->autoip->state == AUTOIP_STATE_ANNOUNCING) &&
+Index: src/core/ipv4/inet_chksum.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/core/ipv4/inet_chksum.c,v
+retrieving revision 1.4
+retrieving revision 1.5
+diff -u -p -r1.4 -r1.5
+--- a/src/core/ipv4/inet_chksum.c	10 Mar 2008 16:12:31 -0000	1.4
++++ b/src/core/ipv4/inet_chksum.c	17 Jun 2008 20:06:25 -0000	1.5
+@@ -41,8 +41,6 @@
+ #include "lwip/inet_chksum.h"
+ #include "lwip/inet.h"
+
+-#include <string.h>
+-
+ /* These are some reference implementations of the checksum algorithm, with the
+  * aim of being simple, correct and fully portable. Checksumming is the
+  * first thing you would want to optimize for your platform. If you create
+@@ -65,6 +63,11 @@
+ # define LWIP_CHKSUM_ALGORITHM 0
+ #endif
+
++/** Like the name says... */
++#define SWAP_BYTES_IN_WORD(w) ((w & 0xff) << 8) | ((w & 0xff00) >> 8)
++/** Split an u32_t in two u16_ts and add them up */
++#define FOLD_U32T(u)          ((u >> 16) + (u & 0x0000ffffUL))
++
+ #if (LWIP_CHKSUM_ALGORITHM == 1) /* Version #1 */
+ /**
+  * lwip checksum
+@@ -86,8 +89,7 @@ lwip_standard_chksum(void *dataptr, u16_
+   acc = 0;
+   /* dataptr may be at odd or even addresses */
+   octetptr = (u8_t*)dataptr;
+-  while (len > 1)
+-  {
++  while (len > 1) {
+     /* declare first octet as most significant
+        thus assume network order, ignoring host order */
+     src = (*octetptr) << 8;
+@@ -98,8 +100,7 @@ lwip_standard_chksum(void *dataptr, u16_
+     acc += src;
+     len -= 2;
+   }
+-  if (len > 0)
+-  {
++  if (len > 0) {
+     /* accumulate remaining octet */
+     src = (*octetptr) << 8;
+     acc += src;
+@@ -154,19 +155,22 @@ lwip_standard_chksum(void *dataptr, int
+   }
+
+   /* Consume left-over byte, if any */
+-  if (len > 0)
++  if (len > 0) {
+     ((u8_t *)&t)[0] = *(u8_t *)ps;;
++  }
+
+   /* Add end bytes */
+   sum += t;
+
+-  /*  Fold 32-bit sum to 16 bits */
+-  while ((sum >> 16) != 0)
+-    sum = (sum & 0xffff) + (sum >> 16);
++  /* Fold 32-bit sum to 16 bits
++     calling this twice is propably faster than if statements... */
++  sum = FOLD_U32T(sum);
++  sum = FOLD_U32T(sum);
+
+   /* Swap if alignment was odd */
+-  if (odd)
+-    sum = ((sum & 0xff) << 8) | ((sum & 0xff00) >> 8);
++  if (odd) {
++    sum = SWAP_BYTES_IN_WORD(sum);
++  }
+
+   return sum;
+ }
+@@ -211,18 +215,20 @@ lwip_standard_chksum(void *dataptr, int
+
+   while (len > 7)  {
+     tmp = sum + *pl++;          /* ping */
+-    if (tmp < sum)
++    if (tmp < sum) {
+       tmp++;                    /* add back carry */
++    }
+
+     sum = tmp + *pl++;          /* pong */
+-    if (sum < tmp)
++    if (sum < tmp) {
+       sum++;                    /* add back carry */
++    }
+
+     len -= 8;
+   }
+
+   /* make room in upper bits */
+-  sum = (sum >> 16) + (sum & 0xffff);
++  sum = FOLD_U32T(sum);
+
+   ps = (u16_t *)pl;
+
+@@ -233,16 +239,20 @@ lwip_standard_chksum(void *dataptr, int
+   }
+
+   /* dangling tail byte remaining? */
+-  if (len > 0)                  /* include odd byte */
++  if (len > 0) {                /* include odd byte */
+     ((u8_t *)&t)[0] = *(u8_t *)ps;
++  }
+
+   sum += t;                     /* add end bytes */
+
+-  while ((sum >> 16) != 0)      /* combine halves */
+-    sum = (sum >> 16) + (sum & 0xffff);
++  /* Fold 32-bit sum to 16 bits
++     calling this twice is propably faster than if statements... */
++  sum = FOLD_U32T(sum);
++  sum = FOLD_U32T(sum);
+
+-  if (odd)
+-    sum = ((sum & 0xff) << 8) | ((sum & 0xff00) >> 8);
++  if (odd) {
++    sum = SWAP_BYTES_IN_WORD(sum);
++  }
+
+   return sum;
+ }
+@@ -277,18 +287,18 @@ inet_chksum_pseudo(struct pbuf *p,
+       (void *)q, (void *)q->next));
+     acc += LWIP_CHKSUM(q->payload, q->len);
+     /*LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): unwrapped lwip_chksum()=%"X32_F" \n", acc));*/
+-    while ((acc >> 16) != 0) {
+-      acc = (acc & 0xffffUL) + (acc >> 16);
+-    }
++    /* just executing this next line is probably faster that the if statement needed
++       to check whether we really need to execute it, and does no harm */
++    acc = FOLD_U32T(acc);
+     if (q->len % 2 != 0) {
+       swapped = 1 - swapped;
+-      acc = ((acc & 0xff) << 8) | ((acc & 0xff00UL) >> 8);
++      acc = SWAP_BYTES_IN_WORD(acc);
+     }
+     /*LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): wrapped lwip_chksum()=%"X32_F" \n", acc));*/
+   }
+
+   if (swapped) {
+-    acc = ((acc & 0xff) << 8) | ((acc & 0xff00UL) >> 8);
++    acc = SWAP_BYTES_IN_WORD(acc);
+   }
+   acc += (src->addr & 0xffffUL);
+   acc += ((src->addr >> 16) & 0xffffUL);
+@@ -297,9 +307,10 @@ inet_chksum_pseudo(struct pbuf *p,
+   acc += (u32_t)htons((u16_t)proto);
+   acc += (u32_t)htons(proto_len);
+
+-  while ((acc >> 16) != 0) {
+-    acc = (acc & 0xffffUL) + (acc >> 16);
+-  }
++  /* Fold 32-bit sum to 16 bits
++     calling this twice is propably faster than if statements... */
++  acc = FOLD_U32T(acc);
++  acc = FOLD_U32T(acc);
+   LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): pbuf chain lwip_chksum()=%"X32_F"\n", acc));
+   return (u16_t)~(acc & 0xffffUL);
+ }
+@@ -340,18 +351,17 @@ inet_chksum_pseudo_partial(struct pbuf *
+     chksum_len -= chklen;
+     LWIP_ASSERT("delete me", chksum_len < 0x7fff);
+     /*LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): unwrapped lwip_chksum()=%"X32_F" \n", acc));*/
+-    while ((acc >> 16) != 0) {
+-      acc = (acc & 0xffffUL) + (acc >> 16);
+-    }
++    /* fold the upper bit down */
++    acc = FOLD_U32T(acc);
+     if (q->len % 2 != 0) {
+       swapped = 1 - swapped;
+-      acc = ((acc & 0xff) << 8) | ((acc & 0xff00UL) >> 8);
++      acc = SWAP_BYTES_IN_WORD(acc);
+     }
+     /*LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): wrapped lwip_chksum()=%"X32_F" \n", acc));*/
+   }
+
+   if (swapped) {
+-    acc = ((acc & 0xff) << 8) | ((acc & 0xff00UL) >> 8);
++    acc = SWAP_BYTES_IN_WORD(acc);
+   }
+   acc += (src->addr & 0xffffUL);
+   acc += ((src->addr >> 16) & 0xffffUL);
+@@ -360,9 +370,10 @@ inet_chksum_pseudo_partial(struct pbuf *
+   acc += (u32_t)htons((u16_t)proto);
+   acc += (u32_t)htons(proto_len);
+
+-  while ((acc >> 16) != 0) {
+-    acc = (acc & 0xffffUL) + (acc >> 16);
+-  }
++  /* Fold 32-bit sum to 16 bits
++     calling this twice is propably faster than if statements... */
++  acc = FOLD_U32T(acc);
++  acc = FOLD_U32T(acc);
+   LWIP_DEBUGF(INET_DEBUG, ("inet_chksum_pseudo(): pbuf chain lwip_chksum()=%"X32_F"\n", acc));
+   return (u16_t)~(acc & 0xffffUL);
+ }
+@@ -380,13 +391,7 @@ inet_chksum_pseudo_partial(struct pbuf *
+ u16_t
+ inet_chksum(void *dataptr, u16_t len)
+ {
+-  u32_t acc;
+-
+-  acc = LWIP_CHKSUM(dataptr, len);
+-  while ((acc >> 16) != 0) {
+-    acc = (acc & 0xffff) + (acc >> 16);
+-  }
+-  return (u16_t)~(acc & 0xffff);
++  return ~LWIP_CHKSUM(dataptr, len);
+ }
+
+ /**
+@@ -407,17 +412,15 @@ inet_chksum_pbuf(struct pbuf *p)
+   swapped = 0;
+   for(q = p; q != NULL; q = q->next) {
+     acc += LWIP_CHKSUM(q->payload, q->len);
+-    while ((acc >> 16) != 0) {
+-      acc = (acc & 0xffffUL) + (acc >> 16);
+-    }
++    acc = FOLD_U32T(acc);
+     if (q->len % 2 != 0) {
+       swapped = 1 - swapped;
+-      acc = (acc & 0x00ffUL << 8) | (acc & 0xff00UL >> 8);
++      acc = SWAP_BYTES_IN_WORD(acc);
+     }
+   }
+
+   if (swapped) {
+-    acc = ((acc & 0x00ffUL) << 8) | ((acc & 0xff00UL) >> 8);
++    acc = SWAP_BYTES_IN_WORD(acc);
+   }
+   return (u16_t)~(acc & 0xffffUL);
+ }
+Index: src/core/ipv4/ip.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/core/ipv4/ip.c,v
+retrieving revision 1.66
+retrieving revision 1.68
+diff -u -p -r1.66 -r1.68
+--- a/src/core/ipv4/ip.c	14 Jan 2008 20:53:23 -0000	1.66
++++ b/src/core/ipv4/ip.c	17 Jun 2008 19:39:22 -0000	1.68
+@@ -531,9 +531,19 @@ ip_output_if(struct pbuf *p, struct ip_a
+   LWIP_DEBUGF(IP_DEBUG, ("ip_output_if: %c%c%"U16_F"\n", netif->name[0], netif->name[1], netif->num));
+   ip_debug_print(p);
+
+-  LWIP_DEBUGF(IP_DEBUG, ("netif->output()"));
++#if (LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF)
++  if (ip_addr_cmp(dest, &netif->ip_addr)) {
++    /* Packet to self, enqueue it for loopback */
++    LWIP_DEBUGF(IP_DEBUG, ("netif_loop_output()"));
++
++    return netif_loop_output(netif, p, dest);
++  } else
++#endif /* (LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF) */
++  {
++    LWIP_DEBUGF(IP_DEBUG, ("netif->output()"));
+
+-  return netif->output(netif, p, dest);
++    return netif->output(netif, p, dest);
++  }
+ }
+
+ /**
+Index: src/include/lwip/debug.h
+===================================================================
+RCS file: /sources/lwip/lwip/src/include/lwip/debug.h,v
+retrieving revision 1.37
+retrieving revision 1.39
+diff -u -p -r1.37 -r1.39
+--- a/src/include/lwip/debug.h	22 Sep 2007 11:16:07 -0000	1.37
++++ b/src/include/lwip/debug.h	16 Jul 2008 20:36:22 -0000	1.39
+@@ -61,26 +61,28 @@
+ #define LWIP_DBG_HALT          0x08U
+
+ #ifndef LWIP_NOASSERT
+-#define LWIP_ASSERT(x,y) do { if(!(y)) LWIP_PLATFORM_ASSERT(x); } while(0)
++#define LWIP_ASSERT(message, assertion) do { if(!(assertion)) \
++  LWIP_PLATFORM_ASSERT(message); } while(0)
+ #else  /* LWIP_NOASSERT */
+-#define LWIP_ASSERT(x,y)
++#define LWIP_ASSERT(message, assertion)
+ #endif /* LWIP_NOASSERT */
+
+-/** print "m" message only if "e" is true, and execute "h" expression */
++/** if "expression" isn't true, then print "message" and execute "handler" expression */
+ #ifndef LWIP_ERROR
+-#define LWIP_ERROR(m,e,h) do { if (!(e)) { LWIP_PLATFORM_ASSERT(m); h;}} while(0)
++#define LWIP_ERROR(message, expression, handler) do { if (!(expression)) { \
++  LWIP_PLATFORM_ASSERT(message); handler;}} while(0)
+ #endif /* LWIP_ERROR */
+
+ #ifdef LWIP_DEBUG
+ /** print debug message only if debug message type is enabled...
+  *  AND is of correct type AND is at least LWIP_DBG_LEVEL
+  */
+-#define LWIP_DEBUGF(debug,x) do { \
++#define LWIP_DEBUGF(debug, message) do { \
+                                if ( \
+                                    ((debug) & LWIP_DBG_ON) && \
+                                    ((debug) & LWIP_DBG_TYPES_ON) && \
+                                    ((s16_t)((debug) & LWIP_DBG_MASK_LEVEL) >= LWIP_DBG_MIN_LEVEL)) { \
+-                                 LWIP_PLATFORM_DIAG(x); \
++                                 LWIP_PLATFORM_DIAG(message); \
+                                  if ((debug) & LWIP_DBG_HALT) { \
+                                    while(1); \
+                                  } \
+@@ -88,7 +90,7 @@
+                              } while(0)
+
+ #else  /* LWIP_DEBUG */
+-#define LWIP_DEBUGF(debug,x)
++#define LWIP_DEBUGF(debug, message)
+ #endif /* LWIP_DEBUG */
+
+ #endif /* __LWIP_DEBUG_H__ */
+Index: src/include/lwip/err.h
+===================================================================
+RCS file: /sources/lwip/lwip/src/include/lwip/err.h,v
+retrieving revision 1.13
+retrieving revision 1.15
+diff -u -p -r1.13 -r1.15
+--- a/src/include/lwip/err.h	13 Dec 2007 23:06:50 -0000	1.13
++++ b/src/include/lwip/err.h	17 Jun 2008 20:27:32 -0000	1.15
+@@ -33,37 +33,43 @@
+ #define __LWIP_ERR_H__
+
+ #include "lwip/opt.h"
++#include "lwip/arch.h"
+
+ #ifdef __cplusplus
+ extern "C" {
+ #endif
+
+-typedef s8_t err_t;
++/** Define LWIP_ERR_T in cc.h if you want to use
++ *  a different type for your platform (must be signed). */
++#ifdef LWIP_ERR_T
++typedef LWIP_ERR_T err_t;
++#else /* LWIP_ERR_T */
++ typedef s8_t err_t;
++#endif /* LWIP_ERR_T*/
+
+ /* Definitions for error constants. */
+
+ #define ERR_OK          0    /* No error, everything OK. */
+ #define ERR_MEM        -1    /* Out of memory error.     */
+ #define ERR_BUF        -2    /* Buffer error.            */
+-#define ERR_RTE        -3    /* Routing problem.         */
++#define ERR_TIMEOUT    -3    /* Timeout.                 */
++#define ERR_RTE        -4    /* Routing problem.         */
+
+ #define ERR_IS_FATAL(e) ((e) < ERR_RTE)
+
+-#define ERR_ABRT       -4    /* Connection aborted.      */
+-#define ERR_RST        -5    /* Connection reset.        */
+-#define ERR_CLSD       -6    /* Connection closed.       */
+-#define ERR_CONN       -7    /* Not connected.           */
++#define ERR_ABRT       -5    /* Connection aborted.      */
++#define ERR_RST        -6    /* Connection reset.        */
++#define ERR_CLSD       -7    /* Connection closed.       */
++#define ERR_CONN       -8    /* Not connected.           */
+
+-#define ERR_VAL        -8    /* Illegal value.           */
++#define ERR_VAL        -9    /* Illegal value.           */
+
+-#define ERR_ARG        -9    /* Illegal argument.        */
++#define ERR_ARG        -10   /* Illegal argument.        */
+
+-#define ERR_USE        -10   /* Address in use.          */
++#define ERR_USE        -11   /* Address in use.          */
+
+-#define ERR_IF         -11   /* Low-level netif error    */
+-#define ERR_ISCONN     -12   /* Already connected.       */
+-
+-#define ERR_TIMEOUT    -13   /* Timeout.                 */
++#define ERR_IF         -12   /* Low-level netif error    */
++#define ERR_ISCONN     -13   /* Already connected.       */
+
+ #define ERR_INPROGRESS -14   /* Operation in progress    */
+
+Index: src/include/lwip/mem.h
+===================================================================
+RCS file: /sources/lwip/lwip/src/include/lwip/mem.h,v
+retrieving revision 1.21
+retrieving revision 1.22
+diff -u -p -r1.21 -r1.22
+--- a/src/include/lwip/mem.h	4 Mar 2008 16:31:32 -0000	1.21
++++ b/src/include/lwip/mem.h	30 May 2008 11:37:15 -0000	1.22
+@@ -50,16 +50,16 @@ typedef size_t mem_size_t;
+  * allow these defines to be overridden.
+  */
+ #ifndef mem_free
+-#define mem_free(x) free(x)
++#define mem_free free
+ #endif
+ #ifndef mem_malloc
+-#define mem_malloc(x) malloc(x)
++#define mem_malloc malloc
+ #endif
+ #ifndef mem_calloc
+-#define mem_calloc(x, y) calloc(x, y)
++#define mem_calloc calloc
+ #endif
+ #ifndef mem_realloc
+-#define mem_realloc(x, size) (x)
++#define mem_realloc realloc
+ #endif
+ #else /* MEM_LIBC_MALLOC */
+
+Index: src/include/lwip/netif.h
+===================================================================
+RCS file: /sources/lwip/lwip/src/include/lwip/netif.h,v
+retrieving revision 1.43
+retrieving revision 1.46
+diff -u -p -r1.43 -r1.46
+--- a/src/include/lwip/netif.h	9 Oct 2007 19:59:59 -0000	1.43
++++ b/src/include/lwip/netif.h	19 Jun 2008 16:27:23 -0000	1.46
+@@ -34,6 +34,8 @@
+
+ #include "lwip/opt.h"
+
++#define ENABLE_LOOPBACK (LWIP_NETIF_LOOPBACK || LWIP_HAVE_LOOPIF)
++
+ #include "lwip/err.h"
+
+ #include "lwip/ip_addr.h"
+@@ -165,6 +167,14 @@ struct netif {
+ #if LWIP_NETIF_HWADDRHINT
+   u8_t *addr_hint;
+ #endif /* LWIP_NETIF_HWADDRHINT */
++#if ENABLE_LOOPBACK
++  /* List of packets to be queued for ourselves. */
++  struct pbuf *loop_first;
++  struct pbuf *loop_last;
++#if LWIP_LOOPBACK_MAX_PBUFS
++  u16_t loop_cnt_current;
++#endif /* LWIP_LOOPBACK_MAX_PBUFS */
++#endif /* ENABLE_LOOPBACK */
+ };
+
+ #if LWIP_SNMP
+@@ -242,4 +252,12 @@ void netif_set_link_callback(struct neti
+ }
+ #endif
+
++#if ENABLE_LOOPBACK
++err_t netif_loop_output(struct netif *netif, struct pbuf *p, struct ip_addr *dest_ip);
++void netif_poll(struct netif *netif);
++#if !LWIP_NETIF_LOOPBACK_MULTITHREADING
++void netif_poll_all(void);
++#endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */
++#endif /* ENABLE_LOOPBACK */
++
+ #endif /* __LWIP_NETIF_H__ */
+Index: src/include/lwip/opt.h
+===================================================================
+RCS file: /sources/lwip/lwip/src/include/lwip/opt.h,v
+retrieving revision 1.116
+retrieving revision 1.122
+diff -u -p -r1.116 -r1.122
+--- a/src/include/lwip/opt.h	31 Jan 2008 18:19:29 -0000	1.116
++++ b/src/include/lwip/opt.h	30 Jun 2008 18:16:52 -0000	1.122
+@@ -155,6 +155,27 @@
+ #define MEMP_USE_CUSTOM_POOLS           0
+ #endif
+
++/**
++ * Set this to 1 if you want to free PBUF_RAM pbufs (or call mem_free()) from
++ * interrupt context (or another context that doesn't allow waiting for a
++ * semaphore).
++ * If set to 1, mem_malloc will be protected by a semaphore and SYS_ARCH_PROTECT,
++ * while mem_free will only use SYS_ARCH_PROTECT. mem_malloc SYS_ARCH_UNPROTECTs
++ * with each loop so that mem_free can run.
++ *
++ * ATTENTION: As you can see from the above description, this leads to dis-/
++ * enabling interrupts often, which can be slow! Also, on low memory, mem_malloc
++ * can need longer.
++ *
++ * If you don't want that, at least for NO_SYS=0, you can still use the following
++ * functions to enqueue a deallocation call which then runs in the tcpip_thread
++ * context:
++ * - pbuf_free_callback(p);
++ * - mem_free_callback(m);
++ */
++#ifndef LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT
++#define LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT 0
++#endif
+
+ /*
+    ------------------------------------------------
+@@ -815,6 +836,39 @@
+ #define LWIP_NETIF_HWADDRHINT           0
+ #endif
+
++/**
++ * LWIP_NETIF_LOOPBACK==1: Support sending packets with a destination IP
++ * address equal to the netif IP address, looping them back up the stack.
++ */
++#ifndef LWIP_NETIF_LOOPBACK
++#define LWIP_NETIF_LOOPBACK             0
++#endif
++
++/**
++ * LWIP_LOOPBACK_MAX_PBUFS: Maximum number of pbufs on queue for loopback
++ * sending for each netif (0 = disabled)
++ */
++#ifndef LWIP_LOOPBACK_MAX_PBUFS
++#define LWIP_LOOPBACK_MAX_PBUFS         0
++#endif
++
++/**
++ * LWIP_NETIF_LOOPBACK_MULTITHREADING: Indicates whether threading is enabled in
++ * the system, as netifs must change how they behave depending on this setting
++ * for the LWIP_NETIF_LOOPBACK option to work.
++ * Setting this is needed to avoid reentering non-reentrant functions like
++ * tcp_input().
++ *    LWIP_NETIF_LOOPBACK_MULTITHREADING==1: Indicates that the user is using a
++ *       multithreaded environment like tcpip.c. In this case, netif->input()
++ *       is called directly.
++ *    LWIP_NETIF_LOOPBACK_MULTITHREADING==0: Indicates a polling (or NO_SYS) setup.
++ *       The packets are put on a list and netif_poll() must be called in
++ *       the main application loop.
++ */
++#ifndef LWIP_NETIF_LOOPBACK_MULTITHREADING
++#define LWIP_NETIF_LOOPBACK_MULTITHREADING    (!NO_SYS)
++#endif
++
+ /*
+    ------------------------------------
+    ---------- LOOPIF options ----------
+@@ -827,20 +881,16 @@
+ #define LWIP_HAVE_LOOPIF                0
+ #endif
+
++/*
++   ------------------------------------
++   ---------- SLIPIF options ----------
++   ------------------------------------
++*/
+ /**
+- * LWIP_LOOPIF_MULTITHREADING: Indicates whether threading is enabled in
+- * the system, as LOOPIF must change how it behaves depending on this setting.
+- * Setting this is needed to avoid reentering non-reentrant functions like
+- * tcp_input().
+- *    LWIP_LOOPIF_MULTITHREADING==1: Indicates that the user is using a
+- *       multithreaded environment like tcpip.c. In this case, netif->input()
+- *       is called directly.
+- *    LWIP_LOOPIF_MULTITHREADING==0: Indicates a polling (or NO_SYS) setup.
+- *       The packets are put on a list and loopif_poll() must be called in
+- *       the main application loop.
++ * LWIP_HAVE_SLIPIF==1: Support slip interface and slipif.c
+  */
+-#ifndef LWIP_LOOPIF_MULTITHREADING
+-#define LWIP_LOOPIF_MULTITHREADING      1
++#ifndef LWIP_HAVE_SLIPIF
++#define LWIP_HAVE_SLIPIF                0
+ #endif
+
+ /*
+Index: src/include/lwip/sio.h
+===================================================================
+RCS file: /sources/lwip/lwip/src/include/lwip/sio.h,v
+retrieving revision 1.7
+retrieving revision 1.8
+diff -u -p -r1.7 -r1.8
+--- a/src/include/lwip/sio.h	6 Sep 2007 16:43:44 -0000	1.7
++++ b/src/include/lwip/sio.h	27 Mar 2008 18:06:02 -0000	1.8
+@@ -32,16 +32,24 @@
+  * It needs to be implemented by those platforms which need SLIP or PPP
+  */
+
++#ifndef __SIO_H__
++#define __SIO_H__
++
+ #include "lwip/arch.h"
+
+ #ifdef __cplusplus
+ extern "C" {
+ #endif
+
++/* If you want to define sio_fd_t elsewhere or differently,
++   define this in your cc.h file. */
+ #ifndef __sio_fd_t_defined
+ typedef void * sio_fd_t;
+ #endif
+
++/* The following functions can be defined to something else in your cc.h file
++   or be implemented in your custom sio.c file. */
++
+ #ifndef sio_open
+ sio_fd_t sio_open(u8_t);
+ #endif
+@@ -69,3 +77,5 @@ void sio_read_abort(sio_fd_t);
+ #ifdef __cplusplus
+ }
+ #endif
++
++#endif /* __SIO_H__ */
+Index: src/include/lwip/sockets.h
+===================================================================
+RCS file: /sources/lwip/lwip/src/include/lwip/sockets.h,v
+retrieving revision 1.38
+retrieving revision 1.39
+diff -u -p -r1.38 -r1.39
+--- a/src/include/lwip/sockets.h	2 Dec 2007 15:24:02 -0000	1.38
++++ b/src/include/lwip/sockets.h	26 Apr 2008 10:46:23 -0000	1.39
+@@ -177,7 +177,22 @@ typedef struct ip_mreq {
+ } ip_mreq;
+ #endif /* LWIP_IGMP */
+
+-/* Unimplemented for now... */
++/*
++ * The Type of Service provides an indication of the abstract
++ * parameters of the quality of service desired.  These parameters are
++ * to be used to guide the selection of the actual service parameters
++ * when transmitting a datagram through a particular network.  Several
++ * networks offer service precedence, which somehow treats high
++ * precedence traffic as more important than other traffic (generally
++ * by accepting only traffic above a certain precedence at time of high
++ * load).  The major choice is a three way tradeoff between low-delay,
++ * high-reliability, and high-throughput.
++ * The use of the Delay, Throughput, and Reliability indications may
++ * increase the cost (in some sense) of the service.  In many networks
++ * better performance for one of these parameters is coupled with worse
++ * performance on another.  Except for very unusual cases at most two
++ * of these three indications should be set.
++ */
+ #define IPTOS_TOS_MASK          0x1E
+ #define IPTOS_TOS(tos)          ((tos) & IPTOS_TOS_MASK)
+ #define IPTOS_LOWDELAY          0x10
+@@ -187,7 +202,13 @@ typedef struct ip_mreq {
+ #define IPTOS_MINCOST           IPTOS_LOWCOST
+
+ /*
+- * Definitions for IP precedence (also in ip_tos) (Unimplemented)
++ * The Network Control precedence designation is intended to be used
++ * within a network only.  The actual use and control of that
++ * designation is up to each network. The Internetwork Control
++ * designation is intended for use by gateway control originators only.
++ * If the actual use of these precedence designations is of concern to
++ * a particular network, it is the responsibility of that network to
++ * control the access to, and use of, those precedence designations.
+  */
+ #define IPTOS_PREC_MASK                 0xe0
+ #define IPTOS_PREC(tos)                ((tos) & IPTOS_PREC_MASK)
+Index: src/include/lwip/stats.h
+===================================================================
+RCS file: /sources/lwip/lwip/src/include/lwip/stats.h,v
+retrieving revision 1.19
+retrieving revision 1.23
+diff -u -p -r1.19 -r1.23
+--- a/src/include/lwip/stats.h	28 Nov 2007 21:25:07 -0000	1.19
++++ b/src/include/lwip/stats.h	8 Jul 2008 09:15:57 -0000	1.23
+@@ -57,7 +57,6 @@ extern "C" {
+
+ struct stats_proto {
+   STAT_COUNTER xmit;             /* Transmitted packets. */
+-  STAT_COUNTER rexmit;           /* Retransmitted packets. */
+   STAT_COUNTER recv;             /* Received packets. */
+   STAT_COUNTER fw;               /* Forwarded packets. */
+   STAT_COUNTER drop;             /* Dropped packets. */
+@@ -87,7 +86,8 @@ struct stats_mem {
+   mem_size_t avail;
+   mem_size_t used;
+   mem_size_t max;
+-  mem_size_t err;
++  STAT_COUNTER err;
++  STAT_COUNTER illegal;
+ };
+
+ struct stats_syselem {
+@@ -142,64 +142,138 @@ extern struct stats_ lwip_stats;
+ #define stats_init() /* Compatibility define, not init needed. */
+
+ #define STATS_INC(x) ++lwip_stats.x
++#define STATS_DEC(x) --lwip_stats.x
+ #else
+ #define stats_init()
+ #define STATS_INC(x)
++#define STATS_DEC(x)
+ #endif /* LWIP_STATS */
+
+ #if TCP_STATS
+ #define TCP_STATS_INC(x) STATS_INC(x)
++#define TCP_STATS_DISPLAY() stats_display_proto(&lwip_stats.tcp, "TCP")
+ #else
+ #define TCP_STATS_INC(x)
++#define TCP_STATS_DISPLAY()
+ #endif
+
+ #if UDP_STATS
+ #define UDP_STATS_INC(x) STATS_INC(x)
++#define UDP_STATS_DISPLAY() stats_display_proto(&lwip_stats.udp, "UDP")
+ #else
+ #define UDP_STATS_INC(x)
++#define UDP_STATS_DISPLAY()
+ #endif
+
+ #if ICMP_STATS
+ #define ICMP_STATS_INC(x) STATS_INC(x)
++#define ICMP_STATS_DISPLAY() stats_display_proto(&lwip_stats.icmp, "ICMP")
+ #else
+ #define ICMP_STATS_INC(x)
++#define ICMP_STATS_DISPLAY()
+ #endif
+
+ #if IGMP_STATS
+ #define IGMP_STATS_INC(x) STATS_INC(x)
++#define IGMP_STATS_DISPLAY() stats_display_igmp(&lwip_stats.igmp)
+ #else
+ #define IGMP_STATS_INC(x)
++#define IGMP_STATS_DISPLAY()
+ #endif
+
+ #if IP_STATS
+ #define IP_STATS_INC(x) STATS_INC(x)
++#define IP_STATS_DISPLAY() stats_display_proto(&lwip_stats.ip, "IP")
+ #else
+ #define IP_STATS_INC(x)
++#define IP_STATS_DISPLAY()
+ #endif
+
+ #if IPFRAG_STATS
+ #define IPFRAG_STATS_INC(x) STATS_INC(x)
++#define IPFRAG_STATS_DISPLAY() stats_display_proto(&lwip_stats.ip_frag, "IP_FRAG")
+ #else
+ #define IPFRAG_STATS_INC(x)
++#define IPFRAG_STATS_DISPLAY()
+ #endif
+
+ #if ETHARP_STATS
+ #define ETHARP_STATS_INC(x) STATS_INC(x)
++#define ETHARP_STATS_DISPLAY() stats_display_proto(&lwip_stats.etharp, "ETHARP")
+ #else
+ #define ETHARP_STATS_INC(x)
++#define ETHARP_STATS_DISPLAY()
+ #endif
+
+ #if LINK_STATS
+ #define LINK_STATS_INC(x) STATS_INC(x)
++#define LINK_STATS_DISPLAY() stats_display_proto(&lwip_stats.link, "LINK")
+ #else
+ #define LINK_STATS_INC(x)
++#define LINK_STATS_DISPLAY()
++#endif
++
++#if MEM_STATS
++#define MEM_STATS_AVAIL(x, y) lwip_stats.mem.x = y
++#define MEM_STATS_INC(x) STATS_INC(mem.x)
++#define MEM_STATS_INC_USED(x, y) do { lwip_stats.mem.used += y; \
++                                    if (lwip_stats.mem.max < lwip_stats.mem.used) { \
++                                        lwip_stats.mem.max = lwip_stats.mem.used; \
++                                    } \
++                                 } while(0)
++#define MEM_STATS_DEC_USED(x, y) lwip_stats.mem.x -= y
++#define MEM_STATS_DISPLAY() stats_display_mem(&lwip_stats.mem, "HEAP")
++#else
++#define MEM_STATS_AVAIL(x, y)
++#define MEM_STATS_INC(x)
++#define MEM_STATS_INC_USED(x, y)
++#define MEM_STATS_DEC_USED(x, y)
++#define MEM_STATS_DISPLAY()
++#endif
++
++#if MEMP_STATS
++#define MEMP_STATS_AVAIL(x, i, y) lwip_stats.memp[i].x = y
++#define MEMP_STATS_INC(x, i) STATS_INC(memp[i].x)
++#define MEMP_STATS_DEC(x, i) STATS_DEC(memp[i].x)
++#define MEMP_STATS_INC_USED(x, i) do { ++lwip_stats.memp[i].used; \
++                                    if (lwip_stats.memp[i].max < lwip_stats.memp[i].used) { \
++                                        lwip_stats.memp[i].max = lwip_stats.memp[i].used; \
++                                    } \
++                                 } while(0)
++#define MEMP_STATS_DISPLAY(i) stats_display_memp(&lwip_stats.memp[i], i)
++#else
++#define MEMP_STATS_AVAIL(x, i, y)
++#define MEMP_STATS_INC(x, i)
++#define MEMP_STATS_DEC(x, i)
++#define MEMP_STATS_INC_USED(x, i)
++#define MEMP_STATS_DISPLAY(i)
++#endif
++
++#if SYS_STATS
++#define SYS_STATS_INC(x) STATS_INC(sys.x)
++#define SYS_STATS_DEC(x) STATS_DEC(sys.x)
++#define SYS_STATS_DISPLAY() stats_display_sys(&lwip_stats.sys)
++#else
++#define SYS_STATS_INC(x)
++#define SYS_STATS_DEC(x)
++#define SYS_STATS_DISPLAY()
+ #endif
+
+ /* Display of statistics */
+ #if LWIP_STATS_DISPLAY
+ void stats_display(void);
++void stats_display_proto(struct stats_proto *proto, char *name);
++void stats_display_igmp(struct stats_igmp *igmp);
++void stats_display_mem(struct stats_mem *mem, char *name);
++void stats_display_memp(struct stats_mem *mem, int index);
++void stats_display_sys(struct stats_sys *sys);
+ #else
+ #define stats_display()
++#define stats_display_proto(proto, name)
++#define stats_display_igmp(igmp)
++#define stats_display_mem(mem, name)
++#define stats_display_memp(mem, index)
++#define stats_display_sys(sys)
+ #endif /* LWIP_STATS_DISPLAY */
+
+ #ifdef __cplusplus
+Index: src/include/lwip/tcpip.h
+===================================================================
+RCS file: /sources/lwip/lwip/src/include/lwip/tcpip.h,v
+retrieving revision 1.24
+retrieving revision 1.27
+diff -u -p -r1.24 -r1.27
+--- a/src/include/lwip/tcpip.h	12 Jan 2008 11:52:22 -0000	1.24
++++ b/src/include/lwip/tcpip.h	27 Jun 2008 20:34:55 -0000	1.27
+@@ -83,7 +83,11 @@ err_t tcpip_netifapi_lock(struct netifap
+ #endif /* LWIP_NETIF_API */
+
+ err_t tcpip_callback_with_block(void (*f)(void *ctx), void *ctx, u8_t block);
+-#define tcpip_callback(f,ctx) tcpip_callback_with_block(f,ctx,1)
++#define tcpip_callback(f, ctx)              tcpip_callback_with_block(f, ctx, 1)
++
++/* free pbufs or heap memory from another context without blocking */
++err_t pbuf_free_callback(struct pbuf *p);
++err_t mem_free_callback(void *m);
+
+ err_t tcpip_timeout(u32_t msecs, sys_timeout_handler h, void *arg);
+ #define tcpip_untimeout(h, arg) tcpip_timeout(0xffffffff, h, arg)
+Index: src/include/netif/loopif.h
+===================================================================
+RCS file: /sources/lwip/lwip/src/include/netif/loopif.h,v
+retrieving revision 1.7
+retrieving revision 1.9
+diff -u -p -r1.7 -r1.9
+--- a/src/include/netif/loopif.h	10 May 2007 10:59:20 -0000	1.7
++++ b/src/include/netif/loopif.h	17 Jun 2008 20:12:22 -0000	1.9
+@@ -32,6 +32,7 @@
+ #ifndef __NETIF_LOOPIF_H__
+ #define __NETIF_LOOPIF_H__
+
++#include "lwip/opt.h"
+ #include "lwip/netif.h"
+ #include "lwip/err.h"
+
+@@ -39,9 +40,9 @@
+ extern "C" {
+ #endif
+
+-#if !LWIP_LOOPIF_MULTITHREADING
+-void loopif_poll(struct netif *netif);
+-#endif
++#if !LWIP_NETIF_LOOPBACK_MULTITHREADING
++#define loopif_poll netif_poll
++#endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */
+
+ err_t loopif_init(struct netif *netif);
+
+Index: src/netif/etharp.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/netif/etharp.c,v
+retrieving revision 1.145
+retrieving revision 1.148
+diff -u -p -r1.145 -r1.148
+--- a/src/netif/etharp.c	4 Mar 2008 13:41:24 -0000	1.145
++++ b/src/netif/etharp.c	19 Jun 2008 16:40:59 -0000	1.148
+@@ -353,7 +353,7 @@ find_entry(struct ip_addr *ipaddr, u8_t
+    * 1) empty entry
+    * 2) oldest stable entry
+    * 3) oldest pending entry without queued packets
+-   * 4) oldest pending entry without queued packets
++   * 4) oldest pending entry with queued packets
+    *
+    * { ETHARP_TRY_HARD is set at this point }
+    */
+@@ -1130,7 +1130,14 @@ ethernet_input(struct pbuf *p, struct ne
+
+   /* points to packet payload, which starts with an Ethernet header */
+   ethhdr = p->payload;
+-
++  LWIP_DEBUGF(ETHARP_DEBUG | LWIP_DBG_TRACE,
++    ("ethernet_input: dest:%02x:%02x:%02x:%02x:%02x:%02x, src:%02x:%02x:%02x:%02x:%02x:%02x, type:%2hx\n",
++     (unsigned)ethhdr->dest.addr[0], (unsigned)ethhdr->dest.addr[1], (unsigned)ethhdr->dest.addr[2],
++     (unsigned)ethhdr->dest.addr[3], (unsigned)ethhdr->dest.addr[4], (unsigned)ethhdr->dest.addr[5],
++     (unsigned)ethhdr->src.addr[0], (unsigned)ethhdr->src.addr[1], (unsigned)ethhdr->src.addr[2],
++     (unsigned)ethhdr->src.addr[3], (unsigned)ethhdr->src.addr[4], (unsigned)ethhdr->src.addr[5],
++     (unsigned)htons(ethhdr->type)));
++
+   switch (htons(ethhdr->type)) {
+     /* IP packet? */
+     case ETHTYPE_IP:
+@@ -1165,6 +1172,8 @@ ethernet_input(struct pbuf *p, struct ne
+ #endif /* PPPOE_SUPPORT */
+
+     default:
++      ETHARP_STATS_INC(etharp.proterr);
++      ETHARP_STATS_INC(etharp.drop);
+       pbuf_free(p);
+       p = NULL;
+       break;
+Index: src/netif/loopif.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/netif/loopif.c,v
+retrieving revision 1.26
+retrieving revision 1.27
+diff -u -p -r1.26 -r1.27
+--- a/src/netif/loopif.c	31 Aug 2007 10:14:09 -0000	1.26
++++ b/src/netif/loopif.c	12 Jun 2008 20:10:10 -0000	1.27
+@@ -40,149 +40,8 @@
+ #if LWIP_HAVE_LOOPIF
+
+ #include "netif/loopif.h"
+-#include "lwip/pbuf.h"
+ #include "lwip/snmp.h"
+
+-#include <string.h>
+-
+-#if !LWIP_LOOPIF_MULTITHREADING
+-
+-#include "lwip/sys.h"
+-#include "lwip/mem.h"
+-
+-/* helper struct for the linked list of pbufs */
+-struct loopif_private {
+-  struct pbuf *first;
+-  struct pbuf *last;
+-};
+-
+-/**
+- * Call loopif_poll() in the main loop of your application. This is to prevent
+- * reentering non-reentrant functions like tcp_input(). Packets passed to
+- * loopif_output() are put on a list that is passed to netif->input() by
+- * loopif_poll().
+- *
+- * @param netif the lwip network interface structure for this loopif
+- */
+-void
+-loopif_poll(struct netif *netif)
+-{
+-  SYS_ARCH_DECL_PROTECT(lev);
+-  struct pbuf *in, *in_end;
+-  struct loopif_private *priv = (struct loopif_private*)netif->state;
+-
+-  LWIP_ERROR("priv != NULL", (priv != NULL), return;);
+-
+-  do {
+-    /* Get a packet from the list. With SYS_LIGHTWEIGHT_PROT=1, this is protected */
+-    SYS_ARCH_PROTECT(lev);
+-    in = priv->first;
+-    if(in) {
+-      in_end = in;
+-      while(in_end->len != in_end->tot_len) {
+-        LWIP_ASSERT("bogus pbuf: len != tot_len but next == NULL!", in_end->next != NULL);
+-        in_end = in_end->next;
+-      }
+-      /* 'in_end' now points to the last pbuf from 'in' */
+-      if(in_end == priv->last) {
+-        /* this was the last pbuf in the list */
+-        priv->first = priv->last = NULL;
+-      } else {
+-        /* pop the pbuf off the list */
+-        priv->first = in_end->next;
+-        LWIP_ASSERT("should not be null since first != last!", priv->first != NULL);
+-      }
+-    }
+-    SYS_ARCH_UNPROTECT(lev);
+-
+-    if(in != NULL) {
+-      if(in_end->next != NULL) {
+-        /* De-queue the pbuf from its successors on the 'priv' list. */
+-        in_end->next = NULL;
+-      }
+-      if(netif->input(in, netif) != ERR_OK) {
+-        pbuf_free(in);
+-      }
+-      /* Don't reference the packet any more! */
+-      in = NULL;
+-      in_end = NULL;
+-    }
+-  /* go on while there is a packet on the list */
+-  } while(priv->first != NULL);
+-}
+-#endif /* LWIP_LOOPIF_MULTITHREADING */
+-
+-/**
+- * Send an IP packet over the loopback interface.
+- * The pbuf is simply copied and handed back to netif->input.
+- * In multithreaded mode, this is done directly since netif->input must put
+- * the packet on a queue.
+- * In callback mode, the packet is put on an internal queue and is fed to
+- * netif->input by loopif_poll().
+- *
+- * @param netif the lwip network interface structure for this loopif
+- * @param p the (IP) packet to 'send'
+- * @param ipaddr the ip address to send the packet to (not used for loopif)
+- * @return ERR_OK if the packet has been sent
+- *         ERR_MEM if the pbuf used to copy the packet couldn't be allocated
+- */
+-static err_t
+-loopif_output(struct netif *netif, struct pbuf *p,
+-       struct ip_addr *ipaddr)
+-{
+-#if !LWIP_LOOPIF_MULTITHREADING
+-  SYS_ARCH_DECL_PROTECT(lev);
+-  struct loopif_private *priv;
+-  struct pbuf *last;
+-#endif /* LWIP_LOOPIF_MULTITHREADING */
+-  struct pbuf *r;
+-  err_t err;
+-
+-  LWIP_UNUSED_ARG(ipaddr);
+-
+-  /* Allocate a new pbuf */
+-  r = pbuf_alloc(PBUF_RAW, p->tot_len, PBUF_RAM);
+-  if (r == NULL) {
+-    return ERR_MEM;
+-  }
+-
+-  /* Copy the whole pbuf queue p into the single pbuf r */
+-  if ((err = pbuf_copy(r, p)) != ERR_OK) {
+-    pbuf_free(r);
+-    r = NULL;
+-    return err;
+-  }
+-
+-#if LWIP_LOOPIF_MULTITHREADING
+-  /* Multithreading environment, netif->input() is supposed to put the packet
+-     into a mailbox, so we can safely call it here without risking to re-enter
+-     functions that are not reentrant (TCP!!!) */
+-  if(netif->input(r, netif) != ERR_OK) {
+-    pbuf_free(r);
+-    r = NULL;
+-  }
+-#else /* LWIP_LOOPIF_MULTITHREADING */
+-  /* Raw API without threads: put the packet on a linked list which gets emptied
+-     through calling loopif_poll(). */
+-  priv = (struct loopif_private*)netif->state;
+-
+-  /* let last point to the last pbuf in chain r */
+-  for (last = r; last->next != NULL; last = last->next);
+-  SYS_ARCH_PROTECT(lev);
+-  if(priv->first != NULL) {
+-    LWIP_ASSERT("if first != NULL, last must also be != NULL", priv->last != NULL);
+-    priv->last->next = r;
+-    priv->last = last;
+-  } else {
+-    priv->first = r;
+-    priv->last = last;
+-  }
+-  SYS_ARCH_UNPROTECT(lev);
+-#endif /* LWIP_LOOPIF_MULTITHREADING */
+-
+-  return ERR_OK;
+-}
+-
+ /**
+  * Initialize a lwip network interface structure for a loopback interface
+  *
+@@ -193,16 +52,6 @@ loopif_output(struct netif *netif, struc
+ err_t
+ loopif_init(struct netif *netif)
+ {
+-#if !LWIP_LOOPIF_MULTITHREADING
+-  struct loopif_private *priv;
+-
+-  priv = (struct loopif_private*)mem_malloc(sizeof(struct loopif_private));
+-  if(priv == NULL)
+-    return ERR_MEM;
+-  priv->first = priv->last = NULL;
+-  netif->state = priv;
+-#endif /* LWIP_LOOPIF_MULTITHREADING */
+-
+   /* initialize the snmp variables and counters inside the struct netif
+    * ifSpeed: no assumption can be made!
+    */
+@@ -210,7 +59,7 @@ loopif_init(struct netif *netif)
+
+   netif->name[0] = 'l';
+   netif->name[1] = 'o';
+-  netif->output = loopif_output;
++  netif->output = netif_loop_output;
+   return ERR_OK;
+ }
+
+Index: src/netif/slipif.c
+===================================================================
+RCS file: /sources/lwip/lwip/src/netif/slipif.c,v
+retrieving revision 1.29
+retrieving revision 1.30
+diff -u -p -r1.29 -r1.30
+--- a/src/netif/slipif.c	30 Nov 2007 17:22:21 -0000	1.29
++++ b/src/netif/slipif.c	17 Jun 2008 20:14:05 -0000	1.30
+@@ -44,6 +44,9 @@
+
+ #include "netif/slipif.h"
+ #include "lwip/opt.h"
++
++#if LWIP_HAVE_SLIPIF
++
+ #include "lwip/def.h"
+ #include "lwip/pbuf.h"
+ #include "lwip/sys.h"
+@@ -273,3 +276,4 @@ slipif_init(struct netif *netif)
+   sys_thread_new(SLIPIF_THREAD_NAME, slipif_loop, netif, SLIPIF_THREAD_STACKSIZE, SLIPIF_THREAD_PRIO);
+   return ERR_OK;
+ }
++#endif /* LWIP_HAVE_SLIPIF */
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/mini-os_udivmoddi4-gcc7.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/mini-os_udivmoddi4-gcc7.patch
new file mode 100644
index 0000000..a3745bd
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/mini-os_udivmoddi4-gcc7.patch
@@ -0,0 +1,43 @@
+From d991bdbc062248221511ecb795617c36b37e1d2e Mon Sep 17 00:00:00 2001
+From: Wei Liu <wei.liu2@citrix.com>
+Date: Wed, 9 Aug 2017 13:15:48 +0100
+Subject: [PATCH] lib/math.c: implement __udivmoddi4
+
+Some code compiled by gcc 7 requires this.
+
+Signed-off-by: Wei Liu <wei.liu2@citrix.com>
+Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
+---
+ lib/math.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/lib/math.c b/lib/math.c
+index 561393e..b98cc1d 100644
+--- a/lib/math.c
++++ b/lib/math.c
+@@ -6,6 +6,7 @@
+  *        File: math.c
+  *      Author: Rolf Neugebauer (neugebar@dcs.gla.ac.uk)
+  *     Changes: 
++ *        Implement __udivmoddi4 (Wei Liu <wei.liu2@citrix.com>)
+  *              
+  *        Date: Aug 2003
+  * 
+@@ -397,6 +398,15 @@ __umoddi3(u_quad_t a, u_quad_t b)
+ }
+ 
+ /*
++ * Returns the quotient and places remainder in r
++ */
++u_quad_t
++__udivmoddi4(u_quad_t a, u_quad_t b, u_quad_t *r)
++{
++	return __qdivrem(a, b, r);
++}
++
++/*
+  * From
+  * moddi3.c
+  */
+--
+2.11.0
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/newlib-chk.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/newlib-chk.patch
new file mode 100644
index 0000000..a5d0149
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/newlib-chk.patch
@@ -0,0 +1,155 @@
+--- a/newlib/libc/stdio/fprintf_chk.c	1969-12-31 19:00:00.000000000 -0500
++++ b/newlib/libc/stdio/fprintf_chk.c	2009-02-26 19:02:53.000000000 -0500
+@@ -0,0 +1,21 @@
++#include <stdarg.h>
++#include <stdio.h>
++
++/*
++ * Stub implementation of __fprintf_chk adapted from glibc 2.7.  This 
++ * doesn't actually implement any buffer overflow protection.  It just makes
++ * the linker happy :)
++*/
++int
++__fprintf_chk (FILE *fp, int flag, const char *format, ...)
++{
++  va_list ap;
++  int done;
++
++  va_start (ap, format);
++  done = vfprintf (fp, format, ap);
++  va_end (ap);
++
++  return done;
++}
++
+--- a/newlib/libc/stdio/Makefile.am	2007-08-02 16:23:06.000000000 -0400
++++ b/newlib/libc/stdio/Makefile.am	2009-02-26 18:14:53.000000000 -0500
+@@ -20,6 +20,7 @@
+ 	flags.c			\
+ 	fopen.c			\
+ 	fprintf.c			\
++	fprintf_chk.c		\
+ 	fputc.c			\
+ 	fputs.c			\
+ 	fread.c			\
+@@ -65,6 +66,7 @@
+ 	sniprintf.c			\
+ 	snprintf.c			\
+ 	sprintf.c			\
++	sprintf_chk.c			\
+ 	sscanf.c			\
+ 	stdio.c			\
+ 	tmpfile.c			\
+--- a/newlib/libc/stdio/Makefile.in	2007-12-19 17:36:38.000000000 -0500
++++ b/newlib/libc/stdio/Makefile.in	2009-02-26 18:43:52.000000000 -0500
+@@ -63,7 +63,8 @@
+ 	lib_a-fgets.$(OBJEXT) lib_a-fileno.$(OBJEXT) \
+ 	lib_a-findfp.$(OBJEXT) lib_a-fiprintf.$(OBJEXT) \
+ 	lib_a-flags.$(OBJEXT) lib_a-fopen.$(OBJEXT) \
+-	lib_a-fprintf.$(OBJEXT) lib_a-fputc.$(OBJEXT) \
++	lib_a-fprintf.$(OBJEXT) lib_a-fprintf_chk.$(OBJEXT) \
++	lib_a-fputc.$(OBJEXT) \
+ 	lib_a-fputs.$(OBJEXT) lib_a-fread.$(OBJEXT) \
+ 	lib_a-freopen.$(OBJEXT) lib_a-fscanf.$(OBJEXT) \
+ 	lib_a-fiscanf.$(OBJEXT) lib_a-fseek.$(OBJEXT) \
+@@ -86,6 +87,7 @@
+ 	lib_a-setvbuf.$(OBJEXT) lib_a-siprintf.$(OBJEXT) \
+ 	lib_a-siscanf.$(OBJEXT) lib_a-sniprintf.$(OBJEXT) \
+ 	lib_a-snprintf.$(OBJEXT) lib_a-sprintf.$(OBJEXT) \
++	lib_a-sprintf_chk.$(OBJEXT) \
+ 	lib_a-sscanf.$(OBJEXT) lib_a-stdio.$(OBJEXT) \
+ 	lib_a-tmpfile.$(OBJEXT) lib_a-tmpnam.$(OBJEXT) \
+ 	lib_a-ungetc.$(OBJEXT) lib_a-vdiprintf.$(OBJEXT) \
+@@ -122,15 +124,15 @@
+ LTLIBRARIES = $(noinst_LTLIBRARIES)
+ am__objects_4 = clearerr.lo fclose.lo fdopen.lo feof.lo ferror.lo \
+ 	fflush.lo fgetc.lo fgetpos.lo fgets.lo fileno.lo findfp.lo \
+-	fiprintf.lo flags.lo fopen.lo fprintf.lo fputc.lo fputs.lo \
+-	fread.lo freopen.lo fscanf.lo fiscanf.lo fseek.lo fsetpos.lo \
++	fiprintf.lo flags.lo fopen.lo fprintf.lo fprintf_chk.lo fputc.lo \
++	fputs.lo fread.lo freopen.lo fscanf.lo fiscanf.lo fseek.lo fsetpos.lo \
+ 	ftell.lo fvwrite.lo fwalk.lo fwrite.lo getc.lo getchar.lo \
+ 	getc_u.lo getchar_u.lo getdelim.lo getline.lo gets.lo \
+ 	iprintf.lo iscanf.lo makebuf.lo perror.lo printf.lo putc.lo \
+ 	putchar.lo putc_u.lo putchar_u.lo puts.lo refill.lo remove.lo \
+ 	rename.lo rewind.lo rget.lo scanf.lo sccl.lo setbuf.lo \
+ 	setbuffer.lo setlinebuf.lo setvbuf.lo siprintf.lo siscanf.lo \
+-	sniprintf.lo snprintf.lo sprintf.lo sscanf.lo stdio.lo \
++	sniprintf.lo snprintf.lo sprintf.lo sprintf_chk.lo sscanf.lo stdio.lo \
+ 	tmpfile.lo tmpnam.lo ungetc.lo vdiprintf.lo vdprintf.lo \
+ 	viprintf.lo viscanf.lo vprintf.lo vscanf.lo vsiprintf.lo \
+ 	vsiscanf.lo vsnprintf.lo vsniprintf.lo vsprintf.lo vsscanf.lo \
+@@ -344,6 +346,7 @@
+ 	flags.c			\
+ 	fopen.c			\
+ 	fprintf.c			\
++	fprintf_chk.c			\
+ 	fputc.c			\
+ 	fputs.c			\
+ 	fread.c			\
+@@ -389,6 +392,7 @@
+ 	sniprintf.c			\
+ 	snprintf.c			\
+ 	sprintf.c			\
++	sprintf_chk.c			\
+ 	sscanf.c			\
+ 	stdio.c			\
+ 	tmpfile.c			\
+@@ -508,6 +512,7 @@
+ 	siprintf.def		\
+ 	siscanf.def		\
+ 	sprintf.def		\
++	sprintf_chk.def		\
+ 	sscanf.def		\
+ 	tmpfile.def		\
+ 	tmpnam.def		\
+@@ -678,6 +683,12 @@
+ lib_a-fprintf.obj: fprintf.c
+ 	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-fprintf.obj `if test -f 'fprintf.c'; then $(CYGPATH_W) 'fprintf.c'; else $(CYGPATH_W) '$(srcdir)/fprintf.c'; fi`
+ 
++lib_a-fprintf_chk.o: fprintf_chk.c
++	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-fprintf_chk.o `test -f 'fprintf_chk.c' || echo '$(srcdir)/'`fprintf_chk.c
++
++lib_a-fprintf_chk.obj: fprintf_chk.c
++	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-fprintf_chk.obj `if test -f 'fprintf_chk.c'; then $(CYGPATH_W) 'fprintf_chk.c'; else $(CYGPATH_W) '$(srcdir)/fprintf_chk.c'; fi`
++
+ lib_a-fputc.o: fputc.c
+ 	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-fputc.o `test -f 'fputc.c' || echo '$(srcdir)/'`fputc.c
+ 
+@@ -948,6 +959,12 @@
+ lib_a-sprintf.obj: sprintf.c
+ 	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-sprintf.obj `if test -f 'sprintf.c'; then $(CYGPATH_W) 'sprintf.c'; else $(CYGPATH_W) '$(srcdir)/sprintf.c'; fi`
+ 
++lib_a-sprintf_chk.o: sprintf_chk.c
++	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-sprintf_chk.o `test -f 'sprintf_chk.c' || echo '$(srcdir)/'`sprintf_chk.c
++
++lib_a-sprintf_chk.obj: sprintf_chk.c
++	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-sprintf_chk.obj `if test -f 'sprintf_chk.c'; then $(CYGPATH_W) 'sprintf_chk.c'; else $(CYGPATH_W) '$(srcdir)/sprintf_chk.c'; fi`
++
+ lib_a-sscanf.o: sscanf.c
+ 	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-sscanf.o `test -f 'sscanf.c' || echo '$(srcdir)/'`sscanf.c
+ 
+--- a/newlib/libc/stdio/sprintf_chk.c	1969-12-31 19:00:00.000000000 -0500
++++ b/newlib/libc/stdio/sprintf_chk.c	2009-02-26 19:02:26.000000000 -0500
+@@ -0,0 +1,21 @@
++#include <stdarg.h>
++#include <stdio.h>
++
++/*
++ * Stub implementation of __sprintf_chk adapted from glibc 2.7.  This 
++ * doesn't actually implement any buffer overflow protection.  It just makes
++ * the linker happy :)
++*/
++int
++__sprintf_chk (char *s, int flags, size_t slen, const char *format, ...)
++{
++  va_list arg;
++  int done;
++
++  va_start (arg, format);
++  done = vsprintf (s, format, arg);
++  va_end (arg);
++
++  return done;
++}
++
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/newlib-stdint-size_max-fix-from-1.17.0.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/newlib-stdint-size_max-fix-from-1.17.0.patch
new file mode 100644
index 0000000..3610d64
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/newlib-stdint-size_max-fix-from-1.17.0.patch
@@ -0,0 +1,16 @@
+--- a/newlib/libc/include/stdint.h.orig	2006-08-17 00:39:43.000000000 +0300
++++ b/newlib/libc/include/stdint.h	2009-08-25 17:33:23.000000000 +0300
+@@ -348,8 +348,11 @@
+ #endif
+ 
+ /* This must match size_t in stddef.h, currently long unsigned int */
+-#define SIZE_MIN (-__STDINT_EXP(LONG_MAX) - 1L)
+-#define SIZE_MAX __STDINT_EXP(LONG_MAX)
++#ifdef __SIZE_MAX__
++#define SIZE_MAX __SIZE_MAX__
++#else
++#define SIZE_MAX (__STDINT_EXP(LONG_MAX) * 2UL + 1)
++#endif
+ 
+ /* This must match sig_atomic_t in <signal.h> (currently int) */
+ #define SIG_ATOMIC_MIN (-__STDINT_EXP(INT_MAX) - 1)
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/newlib.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/newlib.patch
new file mode 100644
index 0000000..dbf409a
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/newlib.patch
@@ -0,0 +1,727 @@
+There is a mix between longs and long longs.
+
+Index: newlib/libc/include/inttypes.h
+===================================================================
+RCS file: /cvs/src/src/newlib/libc/include/inttypes.h,v
+retrieving revision 1.3
+diff -u -p -r1.3 inttypes.h
+--- a/newlib/libc/include/inttypes.h	16 Dec 2005 19:03:12 -0000	1.3
++++ b/newlib/libc/include/inttypes.h	8 Nov 2007 16:32:44 -0000
+@@ -163,12 +163,12 @@
+ 
+ 
+ /* 64-bit types */
+-#if __have_longlong64
+-#define __PRI64(x) __STRINGIFY(ll##x)
+-#define __SCN64(x) __STRINGIFY(ll##x)
+-#elif __have_long64
++#if __have_long64
+ #define __PRI64(x) __STRINGIFY(l##x)
+ #define __SCN64(x) __STRINGIFY(l##x)
++#elif __have_longlong64
++#define __PRI64(x) __STRINGIFY(ll##x)
++#define __SCN64(x) __STRINGIFY(ll##x)
+ #else
+ #define __PRI64(x) __STRINGIFY(x)
+ #define __SCN64(x) __STRINGIFY(x)
+@@ -217,12 +217,12 @@
+ #endif
+ 
+ /* max-bit types */
+-#if __have_longlong64
+-#define __PRIMAX(x) __STRINGIFY(ll##x)
+-#define __SCNMAX(x) __STRINGIFY(ll##x)
+-#elif __have_long64
++#if __have_long64
+ #define __PRIMAX(x) __STRINGIFY(l##x)
+ #define __SCNMAX(x) __STRINGIFY(l##x)
++#elif __have_longlong64
++#define __PRIMAX(x) __STRINGIFY(ll##x)
++#define __SCNMAX(x) __STRINGIFY(ll##x)
+ #else
+ #define __PRIMAX(x) __STRINGIFY(x)
+ #define __SCNMAX(x) __STRINGIFY(x)
+@@ -242,12 +242,12 @@
+ #define SCNxMAX		__SCNMAX(x)
+ 
+ /* ptr types */
+-#if __have_longlong64
+-#define __PRIPTR(x) __STRINGIFY(ll##x)
+-#define __SCNPTR(x) __STRINGIFY(ll##x)
+-#elif __have_long64
++#if __have_long64
+ #define __PRIPTR(x) __STRINGIFY(l##x)
+ #define __SCNPTR(x) __STRINGIFY(l##x)
++#elif __have_longlong64
++#define __PRIPTR(x) __STRINGIFY(ll##x)
++#define __SCNPTR(x) __STRINGIFY(ll##x)
+ #else
+ #define __PRIPTR(x) __STRINGIFY(x)
+ #define __SCNPTR(x) __STRINGIFY(x)
+
+We don't want u?int32_t to be long as our code assume in a lot of places to be
+int.
+
+Index: newlib/libc/include/stdint.h
+===================================================================
+RCS file: /cvs/src/src/newlib/libc/include/stdint.h,v
+retrieving revision 1.10
+diff -u -p -r1.10 stdint.h
+--- a/newlib/libc/include/stdint.h	16 Aug 2006 21:39:43 -0000	1.10
++++ b/newlib/libc/include/stdint.h	12 Feb 2008 13:07:52 -0000
+@@ -38,7 +38,7 @@ extern "C" {
+ #if __STDINT_EXP(LONG_MAX) > 0x7fffffff
+ #define __have_long64 1
+ #elif __STDINT_EXP(LONG_MAX) == 0x7fffffff && !defined(__SPU__)
+-#define __have_long32 1
++/* #define __have_long32 1 */
+ #endif
+ 
+ #if __STDINT_EXP(SCHAR_MAX) == 0x7f
+
+Define the basic ia64 jump buffer
+
+Index: newlib/libc/include/sys/config.h
+===================================================================
+RCS file: /cvs/src/src/newlib/libc/include/sys/config.h,v
+retrieving revision 1.47
+diff -u -p -r1.47 config.h
+--- a/newlib/libc/include/sys/config.h	15 Mar 2007 21:32:12 -0000	1.47
++++ b/newlib/libc/include/sys/config.h	8 Nov 2007 16:32:44 -0000
+@@ -71,6 +71,10 @@
+ #endif
+ #endif
+ 
++#ifndef __DYNAMIC_REENT__
++#define __DYNAMIC_REENT__
++#endif
++
+ #ifdef __mn10200__
+ #define __SMALL_BITFIELDS
+ #endif
+
+Dynamic pointer to our reentrancy zone
+
+Index: newlib/libc/reent/getreent.c
+===================================================================
+RCS file: /cvs/src/src/newlib/libc/reent/getreent.c,v
+retrieving revision 1.2
+diff -u -p -r1.2 getreent.c
+--- a/newlib/libc/reent/getreent.c	7 Sep 2007 00:45:55 -0000	1.2
++++ b/newlib/libc/reent/getreent.c	8 Nov 2007 16:32:44 -0000
+@@ -3,12 +3,20 @@
+ #include <_ansi.h>
+ #include <reent.h>
+ 
++#define weak_alias(name, aliasname) \
++  extern __typeof (name) aliasname __attribute__ ((weak, alias (#name)));
++
+ #ifdef __getreent
+ #undef __getreent
+ #endif
++#ifdef __libc_getreent
++#undef __libc_getreent
++#endif
+ 
+ struct _reent *
+-_DEFUN_VOID(__getreent)
++__libc_getreent (void)
+ {
+   return _impure_ptr;
+ }
++weak_alias(__libc_getreent,__getreent)
++
+
+We can't provide a red zone in mini-os.
+
+Index: newlib/libc/machine/x86_64/memcpy.S
+===================================================================
+RCS file: /cvs/src/src/newlib/libc/machine/x86_64/memcpy.S,v
+retrieving revision 1.1
+diff -u -p -r1.1 memcpy.S
+--- a/newlib/libc/machine/x86_64/memcpy.S	28 Aug 2007 21:56:49 -0000	1.1
++++ b/newlib/libc/machine/x86_64/memcpy.S	8 Nov 2007 16:32:44 -0000
+@@ -30,10 +30,18 @@ quadword_aligned:
+   cmpq    $256, rdx
+   jb      quadword_copy
+ 
++#if 1
++  subq    $32, rsp
++  movq    rax, 24 (rsp)
++  movq    r12, 16 (rsp)
++  movq    r13, 8  (rsp)
++  movq    r14, 0  (rsp)
++#else
+   movq    rax, -8  (rsp)
+   movq    r12, -16 (rsp)
+   movq    r13, -24 (rsp)
+   movq    r14, -32 (rsp)
++#endif
+ 
+   movq    rdx, rcx                /* Copy 128 bytes at a time with minimum cache polution */
+   shrq    $7, rcx
+@@ -89,10 +97,18 @@ loop:
+   movq    rdx, rcx
+   andq    $127, rcx
+   rep     movsb
++#if 1
++  movq    24 (rsp), rax
++  movq    16 (rsp), r12
++  movq    8  (rsp), r13
++  movq    0  (rsp), r14
++  addq    $32, rsp
++#else
+   movq    -8  (rsp), rax
+   movq    -16 (rsp), r12
+   movq    -24 (rsp), r13
+   movq    -32 (rsp), r14
++#endif
+   ret
+ 
+ 
+--- a/newlib/libc/machine/x86_64/x86_64mach.h.orig	2008-07-11 14:57:23.062269000 +0100
++++ b/newlib/libc/machine/x86_64/x86_64mach.h	2008-07-11 14:58:01.262503000 +0100
+@@ -22,81 +22,81 @@
+ 
+ #define REG(x) CONCAT1(__REG_PREFIX__, x)
+ 
+-#define rax REG(rax)
+-#define rbx REG(rbx)
+-#define rcx REG(rcx)
+-#define rdx REG(rdx)
+-#define rsi REG(rsi)
+-#define rdi REG(rdi)
+-#define rbp REG(rbp)
+-#define rsp REG(rsp)
+-
+-#define r8  REG(r8)
+-#define r9  REG(r9)
+-#define r10 REG(r10)
+-#define r11 REG(r11)
+-#define r12 REG(r12)
+-#define r13 REG(r13)
+-#define r14 REG(r14)
+-#define r15 REG(r15)
+-
+-#define eax REG(eax)
+-#define ebx REG(ebx)
+-#define ecx REG(ecx)
+-#define edx REG(edx)
+-#define esi REG(esi)
+-#define edi REG(edi)
+-#define ebp REG(ebp)
+-#define esp REG(esp)
+-
+-#define st0 REG(st)
+-#define st1 REG(st(1))
+-#define st2 REG(st(2))
+-#define st3 REG(st(3))
+-#define st4 REG(st(4))
+-#define st5 REG(st(5))
+-#define st6 REG(st(6))
+-#define st7 REG(st(7))
+-
+-#define ax REG(ax)
+-#define bx REG(bx)
+-#define cx REG(cx)
+-#define dx REG(dx)
+-
+-#define ah REG(ah)
+-#define bh REG(bh)
+-#define ch REG(ch)
+-#define dh REG(dh)
+-
+-#define al REG(al)
+-#define bl REG(bl)
+-#define cl REG(cl)
+-#define dl REG(dl)
+-
+-#define sil REG(sil)
+-
+-#define mm1 REG(mm1)
+-#define mm2 REG(mm2)
+-#define mm3 REG(mm3)
+-#define mm4 REG(mm4)
+-#define mm5 REG(mm5)
+-#define mm6 REG(mm6)
+-#define mm7 REG(mm7)
+-
+-#define xmm0 REG(xmm0)
+-#define xmm1 REG(xmm1)
+-#define xmm2 REG(xmm2)
+-#define xmm3 REG(xmm3)
+-#define xmm4 REG(xmm4)
+-#define xmm5 REG(xmm5)
+-#define xmm6 REG(xmm6)
+-#define xmm7 REG(xmm7)
+-
+-#define cr0 REG(cr0)
+-#define cr1 REG(cr1)
+-#define cr2 REG(cr2)
+-#define cr3 REG(cr3)
+-#define cr4 REG(cr4)
++#define rax %rax
++#define rbx %rbx
++#define rcx %rcx
++#define rdx %rdx
++#define rsi %rsi
++#define rdi %rdi
++#define rbp %rbp
++#define rsp %rsp
++
++#define r8  %r8
++#define r9  %r9
++#define r10 %r10
++#define r11 %r11
++#define r12 %r12
++#define r13 %r13
++#define r14 %r14
++#define r15 %r15
++
++#define eax %eax
++#define ebx %ebx
++#define ecx %ecx
++#define edx %edx
++#define esi %esi
++#define edi %edi
++#define ebp %ebp
++#define esp %esp
++
++#define st0 %st
++#define st1 %st(1)
++#define st2 %st(2)
++#define st3 %st(3)
++#define st4 %st(4)
++#define st5 %st(5)
++#define st6 %st(6)
++#define st7 %st(7)
++
++#define ax %ax
++#define bx %bx
++#define cx %cx
++#define dx %dx
++
++#define ah %ah
++#define bh %bh
++#define ch %ch
++#define dh %dh
++
++#define al %al
++#define bl %bl
++#define cl %cl
++#define dl %dl
++
++#define sil %sil
++
++#define mm1 %mm1
++#define mm2 %mm2
++#define mm3 %mm3
++#define mm4 %mm4
++#define mm5 %mm5
++#define mm6 %mm6
++#define mm7 %mm7
++
++#define xmm0 %xmm0
++#define xmm1 %xmm1
++#define xmm2 %xmm2
++#define xmm3 %xmm3
++#define xmm4 %xmm4
++#define xmm5 %xmm5
++#define xmm6 %xmm6
++#define xmm7 %xmm7
++
++#define cr0 %cr0
++#define cr1 %cr1
++#define cr2 %cr2
++#define cr3 %cr3
++#define cr4 %cr4
+ 
+ #ifdef _I386MACH_NEED_SOTYPE_FUNCTION
+ #define SOTYPE_FUNCTION(sym) .type SYM(sym),@function
+--- a/newlib/libc/machine/x86_64/memcpy.S.orig	2008-07-11 15:12:27.494693000 +0100
++++ b/newlib/libc/machine/x86_64/memcpy.S	2008-07-11 15:12:29.448706000 +0100
+@@ -60,14 +60,14 @@
+   movq    48 (rsi), r13
+   movq    56 (rsi), r14
+ 
+-  movntiq rax,    (rdi)
+-  movntiq r8 ,  8 (rdi)
+-  movntiq r9 , 16 (rdi)
+-  movntiq r10, 24 (rdi)
+-  movntiq r11, 32 (rdi)
+-  movntiq r12, 40 (rdi)
+-  movntiq r13, 48 (rdi)
+-  movntiq r14, 56 (rdi)
++  movnti rax,    (rdi)
++  movnti r8 ,  8 (rdi)
++  movnti r9 , 16 (rdi)
++  movnti r10, 24 (rdi)
++  movnti r11, 32 (rdi)
++  movnti r12, 40 (rdi)
++  movnti r13, 48 (rdi)
++  movnti r14, 56 (rdi)
+ 
+   movq     64 (rsi), rax
+   movq     72 (rsi), r8
+@@ -78,14 +78,14 @@
+   movq    112 (rsi), r13
+   movq    120 (rsi), r14
+ 
+-  movntiq rax,  64 (rdi)
+-  movntiq r8 ,  72 (rdi)
+-  movntiq r9 ,  80 (rdi)
+-  movntiq r10,  88 (rdi)
+-  movntiq r11,  96 (rdi)
+-  movntiq r12, 104 (rdi)
+-  movntiq r13, 112 (rdi)
+-  movntiq r14, 120 (rdi)
++  movnti rax,  64 (rdi)
++  movnti r8 ,  72 (rdi)
++  movnti r9 ,  80 (rdi)
++  movnti r10,  88 (rdi)
++  movnti r11,  96 (rdi)
++  movnti r12, 104 (rdi)
++  movnti r13, 112 (rdi)
++  movnti r14, 120 (rdi)
+ 
+   leaq    128 (rsi), rsi
+   leaq    128 (rdi), rdi
+--- a/newlib/libc/machine/i386/i386mach.h	2000-08-28 18:50:06.000000000 +0100
++++ b/newlib/libc/machine/i386/i386mach.h	2008-07-11 15:17:13.874409000 +0100
+@@ -27,46 +27,46 @@
+  
+ #define REG(x) CONCAT1(__REG_PREFIX__, x)
+  
+-#define eax REG(eax)
+-#define ebx REG(ebx)
+-#define ecx REG(ecx)
+-#define edx REG(edx)
+-#define esi REG(esi)
+-#define edi REG(edi)
+-#define ebp REG(ebp)
+-#define esp REG(esp)
+-
+-#define st0 REG(st)
+-#define st1 REG(st(1))
+-#define st2 REG(st(2))
+-#define st3 REG(st(3))
+-#define st4 REG(st(4))
+-#define st5 REG(st(5))
+-#define st6 REG(st(6))
+-#define st7 REG(st(7))
+-
+-#define ax REG(ax)
+-#define bx REG(bx)
+-#define cx REG(cx)
+-#define dx REG(dx)
+-
+-#define ah REG(ah)
+-#define bh REG(bh)
+-#define ch REG(ch)
+-#define dh REG(dh)
+-
+-#define al REG(al)
+-#define bl REG(bl)
+-#define cl REG(cl)
+-#define dl REG(dl)
+-
+-#define mm1 REG(mm1)
+-#define mm2 REG(mm2)
+-#define mm3 REG(mm3)
+-#define mm4 REG(mm4)
+-#define mm5 REG(mm5)
+-#define mm6 REG(mm6)
+-#define mm7 REG(mm7)
++#define eax %eax
++#define ebx %ebx
++#define ecx %ecx
++#define edx %edx
++#define esi %esi
++#define edi %edi
++#define ebp %ebp
++#define esp %esp
++
++#define st0 %st
++#define st1 %st(1)
++#define st2 %st(2)
++#define st3 %st(3)
++#define st4 %st(4)
++#define st5 %st(5)
++#define st6 %st(6)
++#define st7 %st(7)
++
++#define ax %ax
++#define bx %bx
++#define cx %cx
++#define dx %dx
++
++#define ah %ah
++#define bh %bh
++#define ch %ch
++#define dh %dh
++
++#define al %al
++#define bl %bl
++#define cl %cl
++#define dl %dl
++
++#define mm1 %mm1
++#define mm2 %mm2
++#define mm3 %mm3
++#define mm4 %mm4
++#define mm5 %mm5
++#define mm6 %mm6
++#define mm7 %mm7
+ 
+ #ifdef _I386MACH_NEED_SOTYPE_FUNCTION
+ #define SOTYPE_FUNCTION(sym) .type SYM(sym),@function
+--- a/newlib/libc/machine/x86_64/memset.S	2007-08-28 22:56:49.000000000 +0100
++++ b/newlib/libc/machine/x86_64/memset.S	2008-07-11 15:16:59.098320000 +0100
+@@ -40,22 +40,22 @@
+ 
+   .p2align 4
+ loop:
+-  movntiq rax,     (rdi)
+-  movntiq rax,   8 (rdi)
+-  movntiq rax,  16 (rdi)
+-  movntiq rax,  24 (rdi)
+-  movntiq rax,  32 (rdi)
+-  movntiq rax,  40 (rdi)
+-  movntiq rax,  48 (rdi)
+-  movntiq rax,  56 (rdi)
+-  movntiq rax,  64 (rdi)
+-  movntiq rax,  72 (rdi)
+-  movntiq rax,  80 (rdi)
+-  movntiq rax,  88 (rdi)
+-  movntiq rax,  96 (rdi)
+-  movntiq rax, 104 (rdi)
+-  movntiq rax, 112 (rdi)
+-  movntiq rax, 120 (rdi)
++  movnti rax,     (rdi)
++  movnti rax,   8 (rdi)
++  movnti rax,  16 (rdi)
++  movnti rax,  24 (rdi)
++  movnti rax,  32 (rdi)
++  movnti rax,  40 (rdi)
++  movnti rax,  48 (rdi)
++  movnti rax,  56 (rdi)
++  movnti rax,  64 (rdi)
++  movnti rax,  72 (rdi)
++  movnti rax,  80 (rdi)
++  movnti rax,  88 (rdi)
++  movnti rax,  96 (rdi)
++  movnti rax, 104 (rdi)
++  movnti rax, 112 (rdi)
++  movnti rax, 120 (rdi)
+ 
+   leaq    128 (rdi), rdi
+ 
+--- a/newlib/libm/machine/i386/i386mach.h.orig	2008-07-11 15:30:37.367227000 +0100
++++ b/newlib/libm/machine/i386/i386mach.h	2008-07-11 15:30:55.232337000 +0100
+@@ -27,46 +27,46 @@
+  
+ #define REG(x) CONCAT1(__REG_PREFIX__, x)
+  
+-#define eax REG(eax)
+-#define ebx REG(ebx)
+-#define ecx REG(ecx)
+-#define edx REG(edx)
+-#define esi REG(esi)
+-#define edi REG(edi)
+-#define ebp REG(ebp)
+-#define esp REG(esp)
+-
+-#define st0 REG(st)
+-#define st1 REG(st(1))
+-#define st2 REG(st(2))
+-#define st3 REG(st(3))
+-#define st4 REG(st(4))
+-#define st5 REG(st(5))
+-#define st6 REG(st(6))
+-#define st7 REG(st(7))
+-
+-#define ax REG(ax)
+-#define bx REG(bx)
+-#define cx REG(cx)
+-#define dx REG(dx)
+-
+-#define ah REG(ah)
+-#define bh REG(bh)
+-#define ch REG(ch)
+-#define dh REG(dh)
+-
+-#define al REG(al)
+-#define bl REG(bl)
+-#define cl REG(cl)
+-#define dl REG(dl)
+-
+-#define mm1 REG(mm1)
+-#define mm2 REG(mm2)
+-#define mm3 REG(mm3)
+-#define mm4 REG(mm4)
+-#define mm5 REG(mm5)
+-#define mm6 REG(mm6)
+-#define mm7 REG(mm7)
++#define eax %eax
++#define ebx %ebx
++#define ecx %ecx
++#define edx %edx
++#define esi %esi
++#define edi %edi
++#define ebp %ebp
++#define esp %esp
++
++#define st0 %st
++#define st1 %st(1)
++#define st2 %st(2)
++#define st3 %st(3)
++#define st4 %st(4)
++#define st5 %st(5)
++#define st6 %st(6)
++#define st7 %st(7)
++
++#define ax %ax
++#define bx %bx
++#define cx %cx
++#define dx %dx
++
++#define ah %ah
++#define bh %bh
++#define ch %ch
++#define dh %dh
++
++#define al %al
++#define bl %bl
++#define cl %cl
++#define dl %dl
++
++#define mm1 %mm1
++#define mm2 %mm2
++#define mm3 %mm3
++#define mm4 %mm4
++#define mm5 %mm5
++#define mm6 %mm6
++#define mm7 %mm7
+ 
+ #ifdef _I386MACH_NEED_SOTYPE_FUNCTION
+ #define SOTYPE_FUNCTION(sym) .type SYM(sym),@function
+
+
+We want to have a 64bit offsets libc even on 32bit platforms.
+
+--- ./newlib/configure.host.orig	2008-08-07 16:01:17.801946000 +0100
++++ ./newlib/configure.host	2008-08-07 16:01:34.181064000 +0100
+@@ -317,6 +317,8 @@
+     oext=lo
+     lpfx=
+     aext=la ;;
++  i[34567]86-xen-elf)
++    stdio64_dir=stdio64 ;;
+   *) ;; #shared library not supported for ${host}
+ esac
+ 
+--- a/newlib/libc/include/sys/_types.h.orig	2008-08-07 15:22:44.925008000 +0100
++++ b/newlib/libc/include/sys/_types.h	2008-08-07 15:22:50.824044000 +0100
+@@ -13,8 +13,12 @@
+ #include <sys/lock.h>
+ 
+ #ifndef __off_t_defined
++#ifdef __MINIOS__
++typedef long long _off_t;
++#else
+ typedef long _off_t;
+ #endif
++#endif
+ 
+ #if defined(__rtems__)
+ /* device numbers are 32-bit major and and 32-bit minor */
+--- ./newlib/libc/include/sys/config.h.orig	2008-08-07 14:43:25.915866000 +0100
++++ ./newlib/libc/include/sys/config.h	2008-08-07 14:44:13.508154000 +0100
+@@ -69,6 +69,10 @@
+ /* we use some glibc header files so turn on glibc large file feature */
+ #define _LARGEFILE64_SOURCE 1
+ #endif
++#ifdef __MINIOS__
++#define __LARGE64_FILES 1
++#define _LARGEFILE64_SOURCE 1
++#endif
+ #endif
+ 
+ #ifndef __DYNAMIC_REENT__
+--- ./newlib/libc/include/sys/_default_fcntl.h.orig	2008-08-07 15:08:22.377836000 +0100
++++ ./newlib/libc/include/sys/_default_fcntl.h	2008-08-07 15:08:31.651890000 +0100
+@@ -170,7 +170,11 @@
+ /* Provide _<systemcall> prototypes for functions provided by some versions
+    of newlib.  */
+ #ifdef _COMPILING_NEWLIB
+-extern int _open _PARAMS ((const char *, int, ...));
++extern int _open _PARAMS ((const char *, int, ...))
++#ifdef __MINIOS__
++    asm("open64")
++#endif
++    ;
+ extern int _fcntl _PARAMS ((int, int, ...));
+ #ifdef __LARGE64_FILES
+ extern int _open64 _PARAMS ((const char *, int, ...));
+--- ./newlib/libc/include/sys/unistd.h.orig	2008-08-07 15:09:36.449280000 +0100
++++ ./newlib/libc/include/sys/unistd.h	2008-08-07 15:09:51.210370000 +0100
+@@ -101,7 +101,11 @@
+ int     _EXFUN(link, (const char *__path1, const char *__path2 ));
+ int	_EXFUN(nice, (int __nice_value ));
+ #if !defined(__INSIDE_CYGWIN__)
+-off_t   _EXFUN(lseek, (int __fildes, off_t __offset, int __whence ));
++off_t   _EXFUN(lseek, (int __fildes, off_t __offset, int __whence ))
++#ifdef __MINIOS__
++    asm("lseek64")
++#endif
++    ;
+ #endif
+ #if defined(__SPU__)
+ #define F_ULOCK	0
+--- ./newlib/libc/include/sys/stat.h.orig	2008-08-07 16:08:50.495116000 +0100
++++ ./newlib/libc/include/sys/stat.h	2008-08-07 16:10:21.799753000 +0100
+@@ -49,6 +49,9 @@
+   long	st_spare4[2];
+ #endif
+ };
++#ifdef __MINIOS__
++#define stat64 stat
++#endif
+ #endif
+ 
+ #define	_IFMT		0170000	/* type of file */
+@@ -132,7 +135,11 @@
+ /* Provide prototypes for most of the _<systemcall> names that are
+    provided in newlib for some compilers.  */
+ #ifdef _COMPILING_NEWLIB
+-int	_EXFUN(_fstat,( int __fd, struct stat *__sbuf ));
++int	_EXFUN(_fstat,( int __fd, struct stat *__sbuf ))
++#ifdef __MINIOS__
++    asm("fstat64")
++#endif
++    ;
+ int	_EXFUN(_stat,( const char *__path, struct stat *__sbuf ));
+ #ifdef __LARGE64_FILES
+ struct stat64;
+--- ./newlib/libc/include/_syslist.h.orig	2008-08-07 16:24:19.122605000 +0100
++++ ./newlib/libc/include/_syslist.h	2008-08-07 16:24:21.548628000 +0100
+@@ -14,6 +14,7 @@
+ #define _kill kill
+ #define _link link
+ #define _lseek lseek
++#define _lseek64 lseek64
+ #define _open open
+ #define _read read
+ #define _sbrk sbrk
+--- a/newlib/libc/include/reent.h.orig	2008-08-07 16:28:49.846502000 +0100
++++ b/newlib/libc/include/reent.h	2008-08-07 16:29:02.096586000 +0100
+@@ -87,6 +87,9 @@
+ #if defined(__CYGWIN__) && defined(_COMPILING_NEWLIB)
+ #define stat64 __stat64
+ #endif
++#if defined(__MINIOS__)
++#define stat64 stat
++#endif
+ 
+ struct stat64;
+ 
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/polarssl.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/polarssl.patch
new file mode 100644
index 0000000..9548730
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/polarssl.patch
@@ -0,0 +1,64 @@
+diff -Naur polarssl-1.1.4/include/polarssl/config.h polarssl-x86_64/include/polarssl/config.h
+--- a/include/polarssl/config.h	2011-12-22 05:06:27.000000000 -0500
++++ b/include/polarssl/config.h	2012-10-30 17:18:07.567001000 -0400
+@@ -164,8 +164,8 @@
+  * application.
+  *
+  * Uncomment this macro to prevent loading of default entropy functions.
+-#define POLARSSL_NO_DEFAULT_ENTROPY_SOURCES
+  */
++#define POLARSSL_NO_DEFAULT_ENTROPY_SOURCES
+
+ /**
+  * \def POLARSSL_NO_PLATFORM_ENTROPY
+@@ -175,8 +175,8 @@
+  * standards like the /dev/urandom or Windows CryptoAPI.
+  *
+  * Uncomment this macro to disable the built-in platform entropy functions.
+-#define POLARSSL_NO_PLATFORM_ENTROPY
+  */
++#define POLARSSL_NO_PLATFORM_ENTROPY
+
+ /**
+  * \def POLARSSL_PKCS1_V21
+@@ -426,8 +426,8 @@
+  * Requires: POLARSSL_TIMING_C
+  *
+  * This module enables the HAVEGE random number generator.
+- */
+ #define POLARSSL_HAVEGE_C
++ */
+
+ /**
+  * \def POLARSSL_MD_C
+@@ -490,7 +490,7 @@
+  *
+  * This module provides TCP/IP networking routines.
+  */
+-#define POLARSSL_NET_C
++//#define POLARSSL_NET_C
+
+ /**
+  * \def POLARSSL_PADLOCK_C
+@@ -644,8 +644,8 @@
+  * Caller:  library/havege.c
+  *
+  * This module is used by the HAVEGE random number generator.
+- */
+ #define POLARSSL_TIMING_C
++ */
+
+ /**
+  * \def POLARSSL_VERSION_C
+diff -Naur polarssl-1.1.4/library/bignum.c polarssl-x86_64/library/bignum.c
+--- a/library/bignum.c	2012-04-29 16:15:55.000000000 -0400
++++ b/library/bignum.c	2012-10-30 17:21:52.135000999 -0400
+@@ -1101,7 +1101,7 @@
+             Z.p[i - t - 1] = ~0;
+         else
+         {
+-#if defined(POLARSSL_HAVE_LONGLONG)
++#if 0 //defined(POLARSSL_HAVE_LONGLONG)
+             t_udbl r;
+
+             r  = (t_udbl) X.p[i] << biL;
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/tpmemu-0.7.4.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/tpmemu-0.7.4.patch
new file mode 100644
index 0000000..622b34f
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/tpmemu-0.7.4.patch
@@ -0,0 +1,12 @@
+diff -Naur tpm_emulator-x86_64-back/tpm/tpm_emulator_extern.c tpm_emulator-x86_64/tpm/tpm_emulator_extern.c
+--- a/tpm/tpm_emulator_extern.c	2012-04-27 10:55:46.581963398 -0400
++++ b/tpm/tpm_emulator_extern.c	2012-04-27 10:56:02.193034152 -0400
+@@ -249,7 +249,7 @@
+ #else /* TPM_NO_EXTERN */
+
+ int (*tpm_extern_init)(void)                                      = NULL;
+-int (*tpm_extern_release)(void)                                   = NULL;
++void (*tpm_extern_release)(void)                                   = NULL;
+ void* (*tpm_malloc)(size_t size)                                  = NULL;
+ void (*tpm_free)(/*const*/ void *ptr)                             = NULL;
+ void (*tpm_log)(int priority, const char *fmt, ...)               = NULL;
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-bufsize.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-bufsize.patch
new file mode 100644
index 0000000..9c9304c
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-bufsize.patch
@@ -0,0 +1,13 @@
+diff --git a/config.h.in b/config.h.in
+index d16a997..8088a2a 100644
+--- a/config.h.in
++++ b/config.h.in
+@@ -27,7 +27,7 @@
+ #define TPM_STORAGE_NAME "${TPM_STORAGE_NAME}"
+ #define TPM_DEVICE_NAME  "${TPM_DEVICE_NAME}"
+ #define TPM_LOG_FILE     "${TPM_LOG_FILE}"
+-#define TPM_CMD_BUF_SIZE 4096
++#define TPM_CMD_BUF_SIZE 4088
+ 
+ #endif /* _CONFIG_H_ */
+ 
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-cmake-Wextra.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-cmake-Wextra.patch
new file mode 100644
index 0000000..5fee4e9
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-cmake-Wextra.patch
@@ -0,0 +1,21 @@
+---
+ CMakeLists.txt |    3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+Index: tpm_emulator-x86_64/CMakeLists.txt
+===================================================================
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -40,10 +40,11 @@ set(TPM_STORAGE_NAME "/var/lib/tpm/tpm_e
+ set(TPM_DEVICE_NAME "/dev/tpm")
+ endif()
+ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h)
+-add_definitions(-Wall -Werror -Wno-unused-parameter -Wpointer-arith -Wcast-align -Wwrite-strings)
++add_definitions(-Wall -Werror)
+ if("${CMAKE_SYSTEM}" MATCHES "Linux")
+     add_definitions(-Wextra)
+ endif()
++add_definitions(-Wno-unused-parameter -Wpointer-arith -Wcast-align -Wwrite-strings)
+ if(USE_OPENSSL)
+     add_definitions(-DUSE_OPENSSL)
+ endif()
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-deepquote-anyloc.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-deepquote-anyloc.patch
new file mode 100644
index 0000000..7b37d51
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-deepquote-anyloc.patch
@@ -0,0 +1,127 @@
+diff --git a/tpm/tpm_cmd_handler.c b/tpm/tpm_cmd_handler.c
+index 69511d1..7545d51 100644
+--- a/tpm/tpm_cmd_handler.c
++++ b/tpm/tpm_cmd_handler.c
+@@ -3347,12 +3347,13 @@ static TPM_RESULT execute_TPM_DeepQuote(TPM_REQUEST *req, TPM_RESPONSE *rsp)
+ {
+ 	TPM_NONCE nonce;
+ 	TPM_RESULT res;
+-	UINT32 sigSize;
+-	BYTE *sig;
++	UINT32 quote_blob_size;
++	BYTE *quote_blob;
+ 	BYTE *ptr;
+ 	UINT32 len;
+ 	TPM_PCR_SELECTION myPCR;
+ 	TPM_PCR_SELECTION ptPCR;
++	UINT32 extraInfoFlags = 0;
+ 
+ 	tpm_compute_in_param_digest(req);
+ 
+@@ -3361,17 +3362,19 @@ static TPM_RESULT execute_TPM_DeepQuote(TPM_REQUEST *req, TPM_RESPONSE *rsp)
+ 	if (tpm_unmarshal_TPM_NONCE(&ptr, &len, &nonce)
+ 		|| tpm_unmarshal_TPM_PCR_SELECTION(&ptr, &len, &myPCR)
+ 		|| tpm_unmarshal_TPM_PCR_SELECTION(&ptr, &len, &ptPCR)
++		|| tpm_unmarshal_TPM_DEEP_QUOTE_INFO(&ptr, &len, &extraInfoFlags)
+ 		|| len != 0) return TPM_BAD_PARAMETER;
+ 
+-	res = TPM_DeepQuote(&nonce, &myPCR, &ptPCR, &req->auth1, &sigSize, &sig);
++	res = TPM_DeepQuote(&nonce, &myPCR, &ptPCR, &req->auth1, extraInfoFlags,
++		&quote_blob_size, &quote_blob);
+ 	if (res != TPM_SUCCESS) return res;
+-	rsp->paramSize = len = sigSize;
++	rsp->paramSize = len = quote_blob_size;
+ 	rsp->param = ptr = tpm_malloc(len);
+-	if (ptr == NULL || tpm_marshal_BLOB(&ptr, &len, sig, sigSize)) {
++	if (ptr == NULL || tpm_marshal_BLOB(&ptr, &len, quote_blob, quote_blob_size)) {
+ 		tpm_free(rsp->param);
+ 		res = TPM_FAIL;
+ 	}
+-	tpm_free(sig);
++	tpm_free(quote_blob);
+ 
+ 	return res;
+ }
+diff --git a/tpm/tpm_commands.h b/tpm/tpm_commands.h
+index 328d1be..a56dd5f 100644
+--- a/tpm/tpm_commands.h
++++ b/tpm/tpm_commands.h
+@@ -3077,6 +3077,7 @@ TPM_RESULT TPM_ParentSignEK(
+  * @myPCR: [in] PCR selection for the virtual TPM
+  * @ptPCR: [in] PCR selection for the hardware TPM
+  * @auth1: [in, out] Authorization protocol parameters
++ * @extraInfoFlags [in] Flags for including, kernel hash, group info, etc
+  * @sigSize: [out] The length of the returned digital signature
+  * @sig: [out] The resulting digital signature and PCR values
+  * Returns: TPM_SUCCESS on success, a TPM error code otherwise.
+@@ -3086,6 +3087,7 @@ TPM_RESULT TPM_DeepQuote(
+   TPM_PCR_SELECTION *myPCR,
+   TPM_PCR_SELECTION *ptPCR,
+   TPM_AUTH *auth1,
++  UINT32 extraInfoFlags,
+   UINT32 *sigSize,
+   BYTE **sig
+ );
+diff --git a/tpm/tpm_credentials.c b/tpm/tpm_credentials.c
+index c0d62e7..6586c22 100644
+--- a/tpm/tpm_credentials.c
++++ b/tpm/tpm_credentials.c
+@@ -183,7 +183,8 @@ TPM_RESULT TPM_OwnerReadInternalPub(TPM_KEY_HANDLE keyHandle, TPM_AUTH *auth1,
+ 
+ int endorsementKeyFresh = 0;
+ 
+-TPM_RESULT VTPM_GetParentQuote(TPM_DIGEST* data, TPM_PCR_SELECTION *sel, UINT32 *sigSize, BYTE **sig);
++TPM_RESULT VTPM_GetParentQuote(TPM_NONCE *data, TPM_PCR_SELECTION *sel,
++                               UINT32 extraInfoFlags, UINT32 *sigSize, BYTE **sig);
+ 
+ TPM_RESULT TPM_ParentSignEK(TPM_NONCE *externalData, TPM_PCR_SELECTION *sel,
+                             TPM_AUTH *auth1, UINT32 *sigSize, BYTE **sig)
+@@ -191,7 +192,7 @@ TPM_RESULT TPM_ParentSignEK(TPM_NONCE *externalData, TPM_PCR_SELECTION *sel,
+ 	TPM_PUBKEY pubKey;
+ 	TPM_RESULT res;
+ 	TPM_DIGEST hres;
+-
++	UINT32 extraInfoFlags = 0;
+ 	info("TPM_ParentSignEK()");
+ 
+ 	res = tpm_verify_auth(auth1, tpmData.permanent.data.ownerAuth, TPM_KH_OWNER);
+@@ -206,7 +207,7 @@ TPM_RESULT TPM_ParentSignEK(TPM_NONCE *externalData, TPM_PCR_SELECTION *sel,
+ 		res = TPM_FAIL;
+ 
+ 	if (res == TPM_SUCCESS)
+-		res = VTPM_GetParentQuote(&hres, sel, sigSize, sig);
++		res = VTPM_GetParentQuote((TPM_NONCE*)&hres, sel, extraInfoFlags, sigSize, sig);
+ 
+ 	free_TPM_PUBKEY(pubKey);
+ 	return res;
+@@ -218,7 +219,7 @@ static const BYTE dquot_hdr[] = {
+ 
+ TPM_RESULT TPM_DeepQuote(TPM_NONCE *externalData, TPM_PCR_SELECTION *myPCR,
+                          TPM_PCR_SELECTION *ptPCR, TPM_AUTH *auth1,
+-                         UINT32 *sigSize, BYTE **sig)
++                         UINT32 extraInfoFlags, UINT32 *quote_blob_size, BYTE **quote_blob)
+ {
+   TPM_RESULT res;
+   TPM_DIGEST hres;
+@@ -253,7 +254,7 @@ TPM_RESULT TPM_DeepQuote(TPM_NONCE *externalData, TPM_PCR_SELECTION *myPCR,
+ 
+   tpm_free(buf);
+ 
+-	res = VTPM_GetParentQuote(&hres, ptPCR, sigSize, sig);
++  res = VTPM_GetParentQuote((TPM_NONCE*)&hres, ptPCR, extraInfoFlags, quote_blob_size, quote_blob);
+ 
+   return res;
+ }
+diff --git a/tpm/tpm_marshalling.h b/tpm/tpm_marshalling.h
+index d510ebe..2e0c008 100644
+--- a/tpm/tpm_marshalling.h
++++ b/tpm/tpm_marshalling.h
+@@ -268,6 +268,8 @@ static inline int tpm_unmarshal_BOOL(BYTE **ptr, UINT32 *length, BOOL *v)
+ #define tpm_unmarshal_TPM_REDIR_COMMAND        tpm_unmarshal_UINT32
+ #define tpm_marshal_DAAHANDLE                  tpm_marshal_UINT32
+ #define tpm_unmarshal_DAAHANDLE                tpm_unmarshal_UINT32
++#define tpm_marshal_TPM_DEEP_QUOTE_INFO        tpm_marshal_UINT32
++#define tpm_unmarshal_TPM_DEEP_QUOTE_INFO      tpm_unmarshal_UINT32
+ 
+ int tpm_marshal_UINT32_ARRAY(BYTE **ptr, UINT32 *length, UINT32 *v, UINT32 n);
+ int tpm_unmarshal_UINT32_ARRAY(BYTE **ptr, UINT32 *length, UINT32 *v, UINT32 n);
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-deepquote.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-deepquote.patch
new file mode 100644
index 0000000..6344f38
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-deepquote.patch
@@ -0,0 +1,187 @@
+diff --git a/tpm/tpm_cmd_handler.c b/tpm/tpm_cmd_handler.c
+index 0fabf98..69511d1 100644
+--- a/tpm/tpm_cmd_handler.c
++++ b/tpm/tpm_cmd_handler.c
+@@ -3343,6 +3343,39 @@ static TPM_RESULT execute_TPM_ParentSignEK(TPM_REQUEST *req, TPM_RESPONSE *rsp)
+ 	return res;
+ }
+ 
++static TPM_RESULT execute_TPM_DeepQuote(TPM_REQUEST *req, TPM_RESPONSE *rsp)
++{
++	TPM_NONCE nonce;
++	TPM_RESULT res;
++	UINT32 sigSize;
++	BYTE *sig;
++	BYTE *ptr;
++	UINT32 len;
++	TPM_PCR_SELECTION myPCR;
++	TPM_PCR_SELECTION ptPCR;
++
++	tpm_compute_in_param_digest(req);
++
++	ptr = req->param;
++	len = req->paramSize;
++	if (tpm_unmarshal_TPM_NONCE(&ptr, &len, &nonce)
++		|| tpm_unmarshal_TPM_PCR_SELECTION(&ptr, &len, &myPCR)
++		|| tpm_unmarshal_TPM_PCR_SELECTION(&ptr, &len, &ptPCR)
++		|| len != 0) return TPM_BAD_PARAMETER;
++
++	res = TPM_DeepQuote(&nonce, &myPCR, &ptPCR, &req->auth1, &sigSize, &sig);
++	if (res != TPM_SUCCESS) return res;
++	rsp->paramSize = len = sigSize;
++	rsp->param = ptr = tpm_malloc(len);
++	if (ptr == NULL || tpm_marshal_BLOB(&ptr, &len, sig, sigSize)) {
++		tpm_free(rsp->param);
++		res = TPM_FAIL;
++	}
++	tpm_free(sig);
++
++	return res;
++}
++
+ static void tpm_setup_rsp_auth(TPM_COMMAND_CODE ordinal, TPM_RESPONSE *rsp) 
+ {
+   tpm_hmac_ctx_t hmac;
+@@ -4098,6 +4131,11 @@ void tpm_execute_command(TPM_REQUEST *req, TPM_RESPONSE *rsp)
+       res = execute_TPM_ParentSignEK(req, rsp);
+     break;
+ 
++    case TPM_ORD_DeepQuote:
++      debug("[TPM_ORD_DeepQuote]");
++      res = execute_TPM_DeepQuote(req, rsp);
++    break;
++
+     default:
+ #ifdef MTM_EMULATOR
+       res = mtm_execute_command(req, rsp);
+diff --git a/tpm/tpm_commands.h b/tpm/tpm_commands.h
+index 7fef934..328d1be 100644
+--- a/tpm/tpm_commands.h
++++ b/tpm/tpm_commands.h
+@@ -3071,6 +3071,25 @@ TPM_RESULT TPM_ParentSignEK(
+   BYTE **sig
+ );
+ 
++/**
++ * TPM_DeepQuote - gets a hardware TPM quote of a vTPM's PCRs
++ * @externalData: [in] AntiReplay nonce to prevent replay of messages
++ * @myPCR: [in] PCR selection for the virtual TPM
++ * @ptPCR: [in] PCR selection for the hardware TPM
++ * @auth1: [in, out] Authorization protocol parameters
++ * @sigSize: [out] The length of the returned digital signature
++ * @sig: [out] The resulting digital signature and PCR values
++ * Returns: TPM_SUCCESS on success, a TPM error code otherwise.
++ */
++TPM_RESULT TPM_DeepQuote(
++  TPM_NONCE *externalData,
++  TPM_PCR_SELECTION *myPCR,
++  TPM_PCR_SELECTION *ptPCR,
++  TPM_AUTH *auth1,
++  UINT32 *sigSize,
++  BYTE **sig
++);
++
+ /*
+  * Error handling
+  * [tpm_error.c]
+diff --git a/tpm/tpm_credentials.c b/tpm/tpm_credentials.c
+index 01f29e6..c0d62e7 100644
+--- a/tpm/tpm_credentials.c
++++ b/tpm/tpm_credentials.c
+@@ -211,3 +211,49 @@ TPM_RESULT TPM_ParentSignEK(TPM_NONCE *externalData, TPM_PCR_SELECTION *sel,
+ 	free_TPM_PUBKEY(pubKey);
+ 	return res;
+ }
++
++static const BYTE dquot_hdr[] = {
++	0, 0, 0, 0, 'D', 'Q', 'U', 'T'
++};
++
++TPM_RESULT TPM_DeepQuote(TPM_NONCE *externalData, TPM_PCR_SELECTION *myPCR,
++                         TPM_PCR_SELECTION *ptPCR, TPM_AUTH *auth1,
++                         UINT32 *sigSize, BYTE **sig)
++{
++	TPM_RESULT res;
++	TPM_DIGEST hres;
++	TPM_PCR_INFO_SHORT pcrData;
++	tpm_sha1_ctx_t ctx;
++	BYTE *buf, *ptr;
++	UINT32 size, len;
++
++	info("TPM_DeepQuote()");
++
++	res = tpm_verify_auth(auth1, tpmData.permanent.data.ownerAuth, TPM_KH_OWNER);
++	if (res != TPM_SUCCESS) return res;
++
++	res = tpm_compute_pcr_digest(myPCR, &pcrData.digestAtRelease, NULL);
++	if (res != TPM_SUCCESS) return res;
++
++	pcrData.pcrSelection.sizeOfSelect = myPCR->sizeOfSelect;
++	memcpy(pcrData.pcrSelection.pcrSelect, myPCR->pcrSelect, myPCR->sizeOfSelect);
++	pcrData.localityAtRelease = 1 << tpmData.stany.flags.localityModifier;
++
++	size = len = sizeof_TPM_PCR_INFO_SHORT(pcrData);
++	buf = ptr = tpm_malloc(size);
++	if (buf == NULL) return TPM_NOSPACE;
++	if (tpm_marshal_TPM_PCR_INFO_SHORT(&ptr, &len, &pcrData))
++		return TPM_FAIL;
++
++	tpm_sha1_init(&ctx);
++	tpm_sha1_update(&ctx, dquot_hdr, 8);
++	tpm_sha1_update(&ctx, externalData->nonce, 20);
++	tpm_sha1_update(&ctx, buf, size);
++	tpm_sha1_final(&ctx, hres.digest);
++
++	tpm_free(buf);
++
++	res = VTPM_GetParentQuote(&hres, ptPCR, sigSize, sig);
++
++	return res;
++}
+diff --git a/tpm/tpm_structures.h b/tpm/tpm_structures.h
+index b0f4625..dfb1894 100644
+--- a/tpm/tpm_structures.h
++++ b/tpm/tpm_structures.h
+@@ -660,6 +660,42 @@ typedef struct tdTPM_CMK_MA_APPROVAL {
+ 
+ /* VTPM-only commands: */
+ /*
++ * Deep Quote - Create quote of PCRs
++ * Input:
++ *   TPM_TAG             tag           TPM_TAG_RQU_AUTH1_COMMAND
++ *   UINT32              paramSize     Total size of request
++ *   TPM_COMMAND_CODE    ordinal       TPM_ORD_DeepQuote
++ *   TPM_NONCE           externData    20 bytes of external data
++ *   TPM_PCR_SELECTION   vtSel         PCR selection for virtual TPM
++ *   TPM_PCR_SELECTION   ptSel         PCR selection for physical TPM
++ *   ---
++ *   UINT32              authHandle    Owner authorization session (OIAP)
++ *   TPM_NONCE           nonceOdd      Nonce for authHandle
++ *   BOOL                continueAuth  Continue flag for authHandle
++ *   TPM_AUTHDATA        privAuth      Authorization digest for command
++ *
++ * Output:
++ *   TPM_TAG             tag           TPM_TAG_RSP_AUTH1_COMMAND
++ *   UINT32              paramSize     Total size of response
++ *   TPM_RESULT          returnCode    Return code of the operation
++ *   BYTE[]              sig           Signature provided by physical TPM
++ *   TPM_PCRVALUE[]      pcrValue      Values of hardware PCRs used in the quote
++ *   ---
++ *   TPM_NONCE           nonceEven     Nonce for authHandle
++ *   BOOL                continueAuth  Continue flag for authHandle
++ *   TPM_AUTHDATA        resAuth       Authorization digest for response
++ *
++ * The values of the virutal TPM's PCRs are not included in the response.
++ * The signature is a standard TPM_Quote response from the physical TPM; its
++ * externalData is the SHA1 hash of the following structure:
++ *   TPM_STRUCT_VER      version       MUST be 0.0.0.0
++ *   BYTE[4]             fixed         MUST be the string "DQUT"
++ *   TPM_NONCE           externData    From input to the deep quote
++ *   TPM_PCR_INFO_SHORT  pcrData       Virtual TPM's PCRs
++ */
++#define TPM_ORD_DeepQuote                       (TPM_VENDOR_COMMAND | TPM_ORD_Quote)
++
++/*
+  * ParentSignEK - Proof of fresh provisioning and EK value
+  *
+  * Input:
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-implicit-fallthrough.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-implicit-fallthrough.patch
new file mode 100644
index 0000000..e95d41f
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-implicit-fallthrough.patch
@@ -0,0 +1,10 @@
+--- a/tpm/tpm_cmd_handler.c.orig	2017-04-27 13:37:14.408000000 +0200
++++ b/tpm/tpm_cmd_handler.c	2017-04-27 13:39:53.585000000 +0200
+@@ -3397,6 +3397,7 @@
+                   sizeof(rsp->auth2->nonceOdd.nonce));
+       tpm_hmac_update(&hmac, (BYTE*)&rsp->auth2->continueAuthSession, 1);
+       tpm_hmac_final(&hmac, rsp->auth2->auth);
++      /* fall-thru */
+     case TPM_TAG_RSP_AUTH1_COMMAND:
+       tpm_hmac_init(&hmac, rsp->auth1->secret, sizeof(rsp->auth1->secret));
+       tpm_hmac_update(&hmac, rsp->auth1->digest, sizeof(rsp->auth1->digest));
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-locality.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-locality.patch
new file mode 100644
index 0000000..8ab7dea
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-locality.patch
@@ -0,0 +1,50 @@
+diff --git a/tpm/tpm_capability.c b/tpm/tpm_capability.c
+index 60bbb90..f8f7f0f 100644
+--- a/tpm/tpm_capability.c
++++ b/tpm/tpm_capability.c
+@@ -949,6 +949,8 @@ static TPM_RESULT set_vendor(UINT32 subCap, BYTE *setValue,
+                              UINT32 setValueSize, BOOL ownerAuth,
+                              BOOL deactivated, BOOL disabled)
+ {
++  if (tpmData.stany.flags.localityModifier != 8)
++    return TPM_BAD_PARAMETER;
+   /* set the capability area with the specified data, on failure
+      deactivate the TPM */
+   switch (subCap) {
+diff --git a/tpm/tpm_cmd_handler.c b/tpm/tpm_cmd_handler.c
+index 288d1ce..9e1cfb4 100644
+--- a/tpm/tpm_cmd_handler.c
++++ b/tpm/tpm_cmd_handler.c
+@@ -4132,7 +4132,7 @@ void tpm_emulator_shutdown()
+   tpm_extern_release();
+ }
+ 
+-int tpm_handle_command(const uint8_t *in, uint32_t in_size, uint8_t **out, uint32_t *out_size)
++int tpm_handle_command(const uint8_t *in, uint32_t in_size, uint8_t **out, uint32_t *out_size, int locality)
+ {
+   TPM_REQUEST req;
+   TPM_RESPONSE rsp;
+@@ -4140,7 +4140,9 @@ int tpm_handle_command(const uint8_t *in, uint32_t in_size, uint8_t **out, uint3
+   UINT32 len;
+   BOOL free_out;
+ 
+-  debug("tpm_handle_command()");
++  debug("tpm_handle_command(%d)", locality);
++  if (locality != -1)
++    tpmData.stany.flags.localityModifier = locality;
+ 
+   /* we need the whole packet at once, otherwise unmarshalling will fail */
+   if (tpm_unmarshal_TPM_REQUEST((uint8_t**)&in, &in_size, &req) != 0) {
+diff --git a/tpm/tpm_emulator.h b/tpm/tpm_emulator.h
+index eed749e..4c228bd 100644
+--- a/tpm/tpm_emulator.h
++++ b/tpm/tpm_emulator.h
+@@ -59,7 +59,7 @@ void tpm_emulator_shutdown(void);
+  * its usage. In case of an error, all internally allocated memory
+  * is released and the the state of out and out_size is unspecified.
+  */ 
+-int tpm_handle_command(const uint8_t *in, uint32_t in_size, uint8_t **out, uint32_t *out_size);
++int tpm_handle_command(const uint8_t *in, uint32_t in_size, uint8_t **out, uint32_t *out_size, int locality);
+ 
+ #endif /* _TPM_EMULATOR_H_ */
+ 
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-parent-sign-ek.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-parent-sign-ek.patch
new file mode 100644
index 0000000..14e66ee
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/vtpm-parent-sign-ek.patch
@@ -0,0 +1,196 @@
+diff --git a/tpm/tpm_cmd_handler.c b/tpm/tpm_cmd_handler.c
+index 9e1cfb4..0fabf98 100644
+--- a/tpm/tpm_cmd_handler.c
++++ b/tpm/tpm_cmd_handler.c
+@@ -3312,6 +3312,37 @@ static TPM_RESULT execute_TPM_OwnerReadPubek(TPM_REQUEST *req, TPM_RESPONSE *rsp
+   return res;
+ }
+ 
++static TPM_RESULT execute_TPM_ParentSignEK(TPM_REQUEST *req, TPM_RESPONSE *rsp)
++{
++	TPM_NONCE nonce;
++	TPM_RESULT res;
++	UINT32 sigSize;
++	BYTE *sig;
++	BYTE *ptr;
++	UINT32 len;
++	TPM_PCR_SELECTION targetPCR;
++
++	tpm_compute_in_param_digest(req);
++
++	ptr = req->param;
++	len = req->paramSize;
++	if (tpm_unmarshal_TPM_NONCE(&ptr, &len, &nonce)
++		|| tpm_unmarshal_TPM_PCR_SELECTION(&ptr, &len, &targetPCR)
++		|| len != 0) return TPM_BAD_PARAMETER;
++
++	res = TPM_ParentSignEK(&nonce, &targetPCR, &req->auth1, &sigSize, &sig);
++	if (res != TPM_SUCCESS) return res;
++	rsp->paramSize = len = sigSize;
++	rsp->param = ptr = tpm_malloc(len);
++	if (ptr == NULL || tpm_marshal_BLOB(&ptr, &len, sig, sigSize)) {
++		tpm_free(rsp->param);
++		res = TPM_FAIL;
++	}
++	tpm_free(sig);
++
++	return res;
++}
++
+ static void tpm_setup_rsp_auth(TPM_COMMAND_CODE ordinal, TPM_RESPONSE *rsp) 
+ {
+   tpm_hmac_ctx_t hmac;
+@@ -4062,6 +4093,11 @@ void tpm_execute_command(TPM_REQUEST *req, TPM_RESPONSE *rsp)
+       res = execute_TPM_OwnerReadPubek(req, rsp);
+     break;
+ 
++    case TPM_ORD_ParentSignEK:
++      debug("[TPM_ORD_ParentSignEK]");
++      res = execute_TPM_ParentSignEK(req, rsp);
++    break;
++
+     default:
+ #ifdef MTM_EMULATOR
+       res = mtm_execute_command(req, rsp);
+diff --git a/tpm/tpm_commands.h b/tpm/tpm_commands.h
+index a7666f6..7fef934 100644
+--- a/tpm/tpm_commands.h
++++ b/tpm/tpm_commands.h
+@@ -3054,6 +3054,23 @@ TPM_RESULT TPM_OwnerReadPubek(
+   TPM_PUBKEY *pubEndorsementKey 
+ );
+ 
++/**
++ * TPM_ParentSignEK - gets a hardware TPM quote of a vTPM's EK
++ * @externalData: [in] AntiReplay nonce to prevent replay of messages
++ * @sel: [in] PCR selection for the hardware TPM's quote
++ * @auth1: [in, out] Authorization protocol parameters
++ * @sigSize: [out] The length of the returned digital signature
++ * @sig: [out] The resulting digital signature and PCR values
++ * Returns: TPM_SUCCESS on success, a TPM error code otherwise.
++ */
++TPM_RESULT TPM_ParentSignEK(
++  TPM_NONCE *externalData,
++  TPM_PCR_SELECTION *sel,
++  TPM_AUTH *auth1,
++  UINT32 *sigSize,
++  BYTE **sig
++);
++
+ /*
+  * Error handling
+  * [tpm_error.c]
+diff --git a/tpm/tpm_credentials.c b/tpm/tpm_credentials.c
+index 9cd64af..01f29e6 100644
+--- a/tpm/tpm_credentials.c
++++ b/tpm/tpm_credentials.c
+@@ -180,3 +180,34 @@ TPM_RESULT TPM_OwnerReadInternalPub(TPM_KEY_HANDLE keyHandle, TPM_AUTH *auth1,
+     return TPM_BAD_PARAMETER;
+   }
+ }
++
++int endorsementKeyFresh = 0;
++
++TPM_RESULT VTPM_GetParentQuote(TPM_DIGEST* data, TPM_PCR_SELECTION *sel, UINT32 *sigSize, BYTE **sig);
++
++TPM_RESULT TPM_ParentSignEK(TPM_NONCE *externalData, TPM_PCR_SELECTION *sel,
++                            TPM_AUTH *auth1, UINT32 *sigSize, BYTE **sig)
++{
++	TPM_PUBKEY pubKey;
++	TPM_RESULT res;
++	TPM_DIGEST hres;
++
++	info("TPM_ParentSignEK()");
++
++	res = tpm_verify_auth(auth1, tpmData.permanent.data.ownerAuth, TPM_KH_OWNER);
++	if (res != TPM_SUCCESS) return res;
++
++	if (!endorsementKeyFresh) return TPM_DISABLED_CMD;
++
++	res = tpm_get_pubek(&pubKey);
++	if (res != TPM_SUCCESS) return res;
++
++	if (tpm_compute_pubkey_checksum(externalData, &pubKey, &hres))
++		res = TPM_FAIL;
++
++	if (res == TPM_SUCCESS)
++		res = VTPM_GetParentQuote(&hres, sel, sigSize, sig);
++
++	free_TPM_PUBKEY(pubKey);
++	return res;
++}
+diff --git a/tpm/tpm_data.c b/tpm/tpm_data.c
+index 50c9697..6a0c499 100644
+--- a/tpm/tpm_data.c
++++ b/tpm/tpm_data.c
+@@ -76,6 +76,8 @@ static void init_timeouts(void)
+   tpmData.permanent.data.cmd_durations[2] = 1000;
+ }
+ 
++extern int endorsementKeyFresh;
++
+ void tpm_init_data(void)
+ {
+   /* endorsement key */
+@@ -157,6 +159,7 @@ void tpm_init_data(void)
+   if (tpmConf & TPM_CONF_GENERATE_EK) {
+     /* generate a new endorsement key */
+     tpm_rsa_generate_key(&tpmData.permanent.data.endorsementKey, 2048);
++    endorsementKeyFresh = 1;
+   } else {
+     /* setup endorsement key */
+     tpm_rsa_import_key(&tpmData.permanent.data.endorsementKey, 
+diff --git a/tpm/tpm_structures.h b/tpm/tpm_structures.h
+index f746c05..b0f4625 100644
+--- a/tpm/tpm_structures.h
++++ b/tpm/tpm_structures.h
+@@ -658,6 +658,49 @@ typedef struct tdTPM_CMK_MA_APPROVAL {
+ #define TPM_ORD_TickStampBlob                   242
+ #define TPM_ORD_MAX                             256
+ 
++/* VTPM-only commands: */
++/*
++ * ParentSignEK - Proof of fresh provisioning and EK value
++ *
++ * Input:
++ *   TPM_TAG             tag           TPM_TAG_RQU_AUTH1_COMMAND
++ *   UINT32              paramSize     Total size of request
++ *   TPM_COMMAND_CODE    ordinal       TPM_ORD_ParentSignEK
++ *   TPM_NONCE           externData    20 bytes of external data
++ *   TPM_PCR_SELECTION   ptSel         PCR selection for physical TPM
++ *   ---
++ *   UINT32              authHandle    Owner authorization session (OIAP)
++ *   TPM_NONCE           nonceOdd      Nonce for authHandle
++ *   BOOL                continueAuth  Continue flag for authHandle
++ *   TPM_AUTHDATA        privAuth      Authorization digest for command
++ *
++ * Output:
++ *   TPM_TAG             tag           TPM_TAG_RSP_AUTH1_COMMAND
++ *   UINT32              paramSize     Total size of response
++ *   TPM_RESULT          returnCode    Return code of the operation
++ *   BYTE[]              sig           Signature provided by physical TPM
++ *   TPM_PCRVALUE[]      pcrValue      Values of hardware PCRs used in the quote
++ *   ---
++ *   TPM_NONCE           nonceEven     Nonce for authHandle
++ *   BOOL                continueAuth  Continue flag for authHandle
++ *   TPM_AUTHDATA        resAuth       Authorization digest for response
++ *
++ * This command is only valid on the first boot of a vTPM; on any subsequent
++ * boot, the command returns TPM_DISABLED_CMD. It is intended to be used to
++ * provide evidence of proper platform configuration to the verifier/CA which is
++ * responsible for the creation of the vTPM's endorsement credential, which will
++ * be used on subsequent boots to certify AIKs via the usual Privacy CA protocol.
++ *
++ * The values of the virtual TPM's PCRs are not included in the response.
++ * The signature is a standard TPM_Quote response from the physical TPM; its
++ * externalData is the SHA1 hash of the following structure:
++ *   TPM_PUBKEY          pubEK         The vTPM's public EK
++ *   TPM_NONCE           externData    From input to the deep quote
++ *
++ * This structure was chosen to match the return of TPM_ReadPubek
++ */
++#define TPM_ORD_ParentSignEK                    (TPM_VENDOR_COMMAND | TPM_ORD_ReadPubek)
++
+ /*
+  * TCS Ordinals ([TPM_Part2], Section 17.1)
+  *
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/xsa246-4.9.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/xsa246-4.9.patch
new file mode 100644
index 0000000..6370a10
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/xsa246-4.9.patch
@@ -0,0 +1,74 @@
+From: Julien Grall <julien.grall@linaro.org>
+Subject: x86/pod: prevent infinite loop when shattering large pages
+
+When populating pages, the PoD may need to split large ones using
+p2m_set_entry and request the caller to retry (see ept_get_entry for
+instance).
+
+p2m_set_entry may fail to shatter if it is not possible to allocate
+memory for the new page table. However, the error is not propagated
+resulting to the callers to retry infinitely the PoD.
+
+Prevent the infinite loop by return false when it is not possible to
+shatter the large mapping.
+
+This is XSA-246.
+
+Signed-off-by: Julien Grall <julien.grall@linaro.org>
+Signed-off-by: Jan Beulich <jbeulich@suse.com>
+Reviewed-by: George Dunlap <george.dunlap@citrix.com>
+
+--- a/xen/arch/x86/mm/p2m-pod.c
++++ b/xen/arch/x86/mm/p2m-pod.c
+@@ -1071,9 +1071,8 @@ p2m_pod_demand_populate(struct p2m_domai
+          * NOTE: In a fine-grained p2m locking scenario this operation
+          * may need to promote its locking from gfn->1g superpage
+          */
+-        p2m_set_entry(p2m, gfn_aligned, INVALID_MFN, PAGE_ORDER_2M,
+-                      p2m_populate_on_demand, p2m->default_access);
+-        return 0;
++        return p2m_set_entry(p2m, gfn_aligned, INVALID_MFN, PAGE_ORDER_2M,
++                             p2m_populate_on_demand, p2m->default_access);
+     }
+ 
+     /* Only reclaim if we're in actual need of more cache. */
+@@ -1104,8 +1103,12 @@ p2m_pod_demand_populate(struct p2m_domai
+ 
+     gfn_aligned = (gfn >> order) << order;
+ 
+-    p2m_set_entry(p2m, gfn_aligned, mfn, order, p2m_ram_rw,
+-                  p2m->default_access);
++    if ( p2m_set_entry(p2m, gfn_aligned, mfn, order, p2m_ram_rw,
++                       p2m->default_access) )
++    {
++        p2m_pod_cache_add(p2m, p, order);
++        goto out_fail;
++    }
+ 
+     for( i = 0; i < (1UL << order); i++ )
+     {
+@@ -1150,13 +1153,18 @@ remap_and_retry:
+     BUG_ON(order != PAGE_ORDER_2M);
+     pod_unlock(p2m);
+ 
+-    /* Remap this 2-meg region in singleton chunks */
+-    /* NOTE: In a p2m fine-grained lock scenario this might
+-     * need promoting the gfn lock from gfn->2M superpage */
++    /*
++     * Remap this 2-meg region in singleton chunks. See the comment on the
++     * 1G page splitting path above for why a single call suffices.
++     *
++     * NOTE: In a p2m fine-grained lock scenario this might
++     * need promoting the gfn lock from gfn->2M superpage.
++     */
+     gfn_aligned = (gfn>>order)<<order;
+-    for(i=0; i<(1<<order); i++)
+-        p2m_set_entry(p2m, gfn_aligned + i, INVALID_MFN, PAGE_ORDER_4K,
+-                      p2m_populate_on_demand, p2m->default_access);
++    if ( p2m_set_entry(p2m, gfn_aligned, INVALID_MFN, PAGE_ORDER_4K,
++                       p2m_populate_on_demand, p2m->default_access) )
++        return -1;
++
+     if ( tb_init_done )
+     {
+         struct {
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/xsa248.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/xsa248.patch
new file mode 100644
index 0000000..966c16e
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/xsa248.patch
@@ -0,0 +1,164 @@
+From: Jan Beulich <jbeulich@suse.com>
+Subject: x86/mm: don't wrongly set page ownership
+
+PV domains can obtain mappings of any pages owned by the correct domain,
+including ones that aren't actually assigned as "normal" RAM, but used
+by Xen internally.  At the moment such "internal" pages marked as owned
+by a guest include pages used to track logdirty bits, as well as p2m
+pages and the "unpaged pagetable" for HVM guests. Since the PV memory
+management and shadow code conflict in their use of struct page_info
+fields, and since shadow code is being used for log-dirty handling for
+PV domains, pages coming from the shadow pool must, for PV domains, not
+have the domain set as their owner.
+
+While the change could be done conditionally for just the PV case in
+shadow code, do it unconditionally (and for consistency also for HAP),
+just to be on the safe side.
+
+There's one special case though for shadow code: The page table used for
+running a HVM guest in unpaged mode is subject to get_page() (in
+set_shadow_status()) and hence must have its owner set.
+
+This is XSA-248.
+
+Signed-off-by: Jan Beulich <jbeulich@suse.com>
+Reviewed-by: Tim Deegan <tim@xen.org>
+Reviewed-by: George Dunlap <george.dunlap@citrix.com>
+---
+v2: Drop PGC_page_table related pieces.
+
+--- a/xen/arch/x86/mm/hap/hap.c
++++ b/xen/arch/x86/mm/hap/hap.c
+@@ -286,8 +286,7 @@ static struct page_info *hap_alloc_p2m_p
+     {
+         d->arch.paging.hap.total_pages--;
+         d->arch.paging.hap.p2m_pages++;
+-        page_set_owner(pg, d);
+-        pg->count_info |= 1;
++        ASSERT(!page_get_owner(pg) && !(pg->count_info & PGC_count_mask));
+     }
+     else if ( !d->arch.paging.p2m_alloc_failed )
+     {
+@@ -302,21 +301,23 @@ static struct page_info *hap_alloc_p2m_p
+ 
+ static void hap_free_p2m_page(struct domain *d, struct page_info *pg)
+ {
++    struct domain *owner = page_get_owner(pg);
++
+     /* This is called both from the p2m code (which never holds the 
+      * paging lock) and the log-dirty code (which always does). */
+     paging_lock_recursive(d);
+ 
+-    ASSERT(page_get_owner(pg) == d);
+-    /* Should have just the one ref we gave it in alloc_p2m_page() */
+-    if ( (pg->count_info & PGC_count_mask) != 1 ) {
+-        HAP_ERROR("Odd p2m page %p count c=%#lx t=%"PRtype_info"\n",
+-                     pg, pg->count_info, pg->u.inuse.type_info);
++    /* Should still have no owner and count zero. */
++    if ( owner || (pg->count_info & PGC_count_mask) )
++    {
++        HAP_ERROR("d%d: Odd p2m page %"PRI_mfn" d=%d c=%lx t=%"PRtype_info"\n",
++                  d->domain_id, mfn_x(page_to_mfn(pg)),
++                  owner ? owner->domain_id : DOMID_INVALID,
++                  pg->count_info, pg->u.inuse.type_info);
+         WARN();
++        pg->count_info &= ~PGC_count_mask;
++        page_set_owner(pg, NULL);
+     }
+-    pg->count_info &= ~PGC_count_mask;
+-    /* Free should not decrement domain's total allocation, since
+-     * these pages were allocated without an owner. */
+-    page_set_owner(pg, NULL);
+     d->arch.paging.hap.p2m_pages--;
+     d->arch.paging.hap.total_pages++;
+     hap_free(d, page_to_mfn(pg));
+--- a/xen/arch/x86/mm/shadow/common.c
++++ b/xen/arch/x86/mm/shadow/common.c
+@@ -1503,32 +1503,29 @@ shadow_alloc_p2m_page(struct domain *d)
+     pg = mfn_to_page(shadow_alloc(d, SH_type_p2m_table, 0));
+     d->arch.paging.shadow.p2m_pages++;
+     d->arch.paging.shadow.total_pages--;
++    ASSERT(!page_get_owner(pg) && !(pg->count_info & PGC_count_mask));
+ 
+     paging_unlock(d);
+ 
+-    /* Unlike shadow pages, mark p2m pages as owned by the domain.
+-     * Marking the domain as the owner would normally allow the guest to
+-     * create mappings of these pages, but these p2m pages will never be
+-     * in the domain's guest-physical address space, and so that is not
+-     * believed to be a concern. */
+-    page_set_owner(pg, d);
+-    pg->count_info |= 1;
+     return pg;
+ }
+ 
+ static void
+ shadow_free_p2m_page(struct domain *d, struct page_info *pg)
+ {
+-    ASSERT(page_get_owner(pg) == d);
+-    /* Should have just the one ref we gave it in alloc_p2m_page() */
+-    if ( (pg->count_info & PGC_count_mask) != 1 )
++    struct domain *owner = page_get_owner(pg);
++
++    /* Should still have no owner and count zero. */
++    if ( owner || (pg->count_info & PGC_count_mask) )
+     {
+-        SHADOW_ERROR("Odd p2m page count c=%#lx t=%"PRtype_info"\n",
++        SHADOW_ERROR("d%d: Odd p2m page %"PRI_mfn" d=%d c=%lx t=%"PRtype_info"\n",
++                     d->domain_id, mfn_x(page_to_mfn(pg)),
++                     owner ? owner->domain_id : DOMID_INVALID,
+                      pg->count_info, pg->u.inuse.type_info);
++        pg->count_info &= ~PGC_count_mask;
++        page_set_owner(pg, NULL);
+     }
+-    pg->count_info &= ~PGC_count_mask;
+     pg->u.sh.type = SH_type_p2m_table; /* p2m code reuses type-info */
+-    page_set_owner(pg, NULL);
+ 
+     /* This is called both from the p2m code (which never holds the
+      * paging lock) and the log-dirty code (which always does). */
+@@ -3132,7 +3129,9 @@ int shadow_enable(struct domain *d, u32
+         e = __map_domain_page(pg);
+         write_32bit_pse_identmap(e);
+         unmap_domain_page(e);
++        pg->count_info = 1;
+         pg->u.inuse.type_info = PGT_l2_page_table | 1 | PGT_validated;
++        page_set_owner(pg, d);
+     }
+ 
+     paging_lock(d);
+@@ -3170,7 +3169,11 @@ int shadow_enable(struct domain *d, u32
+     if ( rv != 0 && !pagetable_is_null(p2m_get_pagetable(p2m)) )
+         p2m_teardown(p2m);
+     if ( rv != 0 && pg != NULL )
++    {
++        pg->count_info &= ~PGC_count_mask;
++        page_set_owner(pg, NULL);
+         shadow_free_p2m_page(d, pg);
++    }
+     domain_unpause(d);
+     return rv;
+ }
+@@ -3279,7 +3282,22 @@ out:
+ 
+     /* Must be called outside the lock */
+     if ( unpaged_pagetable )
++    {
++        if ( page_get_owner(unpaged_pagetable) == d &&
++             (unpaged_pagetable->count_info & PGC_count_mask) == 1 )
++        {
++            unpaged_pagetable->count_info &= ~PGC_count_mask;
++            page_set_owner(unpaged_pagetable, NULL);
++        }
++        /* Complain here in cases where shadow_free_p2m_page() won't. */
++        else if ( !page_get_owner(unpaged_pagetable) &&
++                  !(unpaged_pagetable->count_info & PGC_count_mask) )
++            SHADOW_ERROR("d%d: Odd unpaged pt %"PRI_mfn" c=%lx t=%"PRtype_info"\n",
++                         d->domain_id, mfn_x(page_to_mfn(unpaged_pagetable)),
++                         unpaged_pagetable->count_info,
++                         unpaged_pagetable->u.inuse.type_info);
+         shadow_free_p2m_page(d, unpaged_pagetable);
++    }
+ }
+ 
+ void shadow_final_teardown(struct domain *d)
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/xsa249.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/xsa249.patch
new file mode 100644
index 0000000..ecfa430
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/xsa249.patch
@@ -0,0 +1,42 @@
+From: Jan Beulich <jbeulich@suse.com>
+Subject: x86/shadow: fix refcount overflow check
+
+Commit c385d27079 ("x86 shadow: for multi-page shadows, explicitly track
+the first page") reduced the refcount width to 25, without adjusting the
+overflow check. Eliminate the disconnect by using a manifest constant.
+
+Interestingly, up to commit 047782fa01 ("Out-of-sync L1 shadows: OOS
+snapshot") the refcount was 27 bits wide, yet the check was already
+using 26.
+
+This is XSA-249.
+
+Signed-off-by: Jan Beulich <jbeulich@suse.com>
+Reviewed-by: George Dunlap <george.dunlap@citrix.com>
+Reviewed-by: Tim Deegan <tim@xen.org>
+---
+v2: Simplify expression back to the style it was.
+
+--- a/xen/arch/x86/mm/shadow/private.h
++++ b/xen/arch/x86/mm/shadow/private.h
+@@ -529,7 +529,7 @@ static inline int sh_get_ref(struct doma
+     x = sp->u.sh.count;
+     nx = x + 1;
+ 
+-    if ( unlikely(nx >= 1U<<26) )
++    if ( unlikely(nx >= (1U << PAGE_SH_REFCOUNT_WIDTH)) )
+     {
+         SHADOW_PRINTK("shadow ref overflow, gmfn=%lx smfn=%lx\n",
+                        __backpointer(sp), mfn_x(smfn));
+--- a/xen/include/asm-x86/mm.h
++++ b/xen/include/asm-x86/mm.h
+@@ -82,7 +82,8 @@ struct page_info
+             unsigned long type:5;   /* What kind of shadow is this? */
+             unsigned long pinned:1; /* Is the shadow pinned? */
+             unsigned long head:1;   /* Is this the first page of the shadow? */
+-            unsigned long count:25; /* Reference count */
++#define PAGE_SH_REFCOUNT_WIDTH 25
++            unsigned long count:PAGE_SH_REFCOUNT_WIDTH; /* Reference count */
+         } sh;
+ 
+         /* Page is on a free list: ((count_info & PGC_count_mask) == 0). */
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/xsa250.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/xsa250.patch
new file mode 100644
index 0000000..26aeb33
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/xsa250.patch
@@ -0,0 +1,67 @@
+From: Jan Beulich <jbeulich@suse.com>
+Subject: x86/shadow: fix ref-counting error handling
+
+The old-Linux handling in shadow_set_l4e() mistakenly ORed together the
+results of sh_get_ref() and sh_pin(). As the latter failing is not a
+correctness problem, simply ignore its return value.
+
+In sh_set_toplevel_shadow() a failing sh_get_ref() must not be
+accompanied by installing the entry, despite the domain being crashed.
+
+This is XSA-250.
+
+Signed-off-by: Jan Beulich <jbeulich@suse.com>
+Reviewed-by: Tim Deegan <tim@xen.org>
+
+--- a/xen/arch/x86/mm/shadow/multi.c
++++ b/xen/arch/x86/mm/shadow/multi.c
+@@ -923,7 +923,7 @@ static int shadow_set_l4e(struct domain
+                           shadow_l4e_t new_sl4e,
+                           mfn_t sl4mfn)
+ {
+-    int flags = 0, ok;
++    int flags = 0;
+     shadow_l4e_t old_sl4e;
+     paddr_t paddr;
+     ASSERT(sl4e != NULL);
+@@ -938,15 +938,16 @@ static int shadow_set_l4e(struct domain
+     {
+         /* About to install a new reference */
+         mfn_t sl3mfn = shadow_l4e_get_mfn(new_sl4e);
+-        ok = sh_get_ref(d, sl3mfn, paddr);
+-        /* Are we pinning l3 shadows to handle wierd linux behaviour? */
+-        if ( sh_type_is_pinnable(d, SH_type_l3_64_shadow) )
+-            ok |= sh_pin(d, sl3mfn);
+-        if ( !ok )
++
++        if ( !sh_get_ref(d, sl3mfn, paddr) )
+         {
+             domain_crash(d);
+             return SHADOW_SET_ERROR;
+         }
++
++        /* Are we pinning l3 shadows to handle weird Linux behaviour? */
++        if ( sh_type_is_pinnable(d, SH_type_l3_64_shadow) )
++            sh_pin(d, sl3mfn);
+     }
+ 
+     /* Write the new entry */
+@@ -3965,14 +3966,15 @@ sh_set_toplevel_shadow(struct vcpu *v,
+ 
+     /* Take a ref to this page: it will be released in sh_detach_old_tables()
+      * or the next call to set_toplevel_shadow() */
+-    if ( !sh_get_ref(d, smfn, 0) )
++    if ( sh_get_ref(d, smfn, 0) )
++        new_entry = pagetable_from_mfn(smfn);
++    else
+     {
+         SHADOW_ERROR("can't install %#lx as toplevel shadow\n", mfn_x(smfn));
+         domain_crash(d);
++        new_entry = pagetable_null();
+     }
+ 
+-    new_entry = pagetable_from_mfn(smfn);
+-
+  install_new_entry:
+     /* Done.  Install it */
+     SHADOW_PRINTK("%u/%u [%u] gmfn %#"PRI_mfn" smfn %#"PRI_mfn"\n",
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/xsa251.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/xsa251.patch
new file mode 100644
index 0000000..582ef62
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/xsa251.patch
@@ -0,0 +1,21 @@
+From: Jan Beulich <jbeulich@suse.com>
+Subject: x86/paging: don't unconditionally BUG() on finding SHARED_M2P_ENTRY
+
+PV guests can fully control the values written into the P2M.
+
+This is XSA-251.
+
+Signed-off-by: Jan Beulich <jbeulich@suse.com>
+Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
+
+--- a/xen/arch/x86/mm/paging.c
++++ b/xen/arch/x86/mm/paging.c
+@@ -274,7 +274,7 @@ void paging_mark_pfn_dirty(struct domain
+         return;
+ 
+     /* Shared MFNs should NEVER be marked dirty */
+-    BUG_ON(SHARED_M2P(pfn_x(pfn)));
++    BUG_ON(paging_mode_translate(d) && SHARED_M2P(pfn_x(pfn)));
+ 
+     /*
+      * Values with the MSB set denote MFNs that aren't really part of the
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/files/xsa253.patch b/import-layers/meta-virtualization/recipes-extended/xen/files/xsa253.patch
new file mode 100644
index 0000000..19e4269
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/files/xsa253.patch
@@ -0,0 +1,26 @@
+From: Andrew Cooper <andrew.cooper3@citrix.com>
+Subject: x86/msr: Free msr_vcpu_policy during vcpu destruction
+
+c/s 4187f79dc7 "x86/msr: introduce struct msr_vcpu_policy" introduced a
+per-vcpu memory allocation, but failed to free it in the clean vcpu
+destruction case.
+
+This is XSA-253
+
+Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
+Reviewed-by: Jan Beulich <jbeulich@suse.com>
+
+diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
+index b17468c..0ae715d 100644
+--- a/xen/arch/x86/domain.c
++++ b/xen/arch/x86/domain.c
+@@ -382,6 +382,9 @@ void vcpu_destroy(struct vcpu *v)
+ 
+     vcpu_destroy_fpu(v);
+ 
++    xfree(v->arch.msr);
++    v->arch.msr = NULL;
++
+     if ( !is_idle_domain(v->domain) )
+         vpmu_destroy(v);
+ 
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/lwip.inc b/import-layers/meta-virtualization/recipes-extended/xen/lwip.inc
new file mode 100644
index 0000000..e083633
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/lwip.inc
@@ -0,0 +1,24 @@
+# Copyright (C) 2018 kebodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+require stubdom.inc
+
+# clear this out to break dependency circle
+DEPENDS = ""
+
+# Nothing to configure or compile
+# For stubdoms, lwip is basically a source package with a couple of patches applied.
+do_configure[noexec] = "1"
+do_compile[noexec] = "1"
+
+# needed because this directory isn't typically part of a sysroot
+SYSROOT_DIRS += "${prefix}/lwip"
+
+FILES_${PN} = "\
+    ${prefix} \
+"
+
+do_install() {
+    install -d ${D}${prefix}/lwip
+    cp -r -t ${D}${prefix}/lwip ${S}/src/*
+}
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/lwip_1.3.0.bb b/import-layers/meta-virtualization/recipes-extended/xen/lwip_1.3.0.bb
new file mode 100644
index 0000000..b7d8e95
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/lwip_1.3.0.bb
@@ -0,0 +1,19 @@
+# Copyright (C) 2018 kebodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+DESCRIPTION = "LWIP"
+HOMEPAGE = "https://savannah.nongnu.org/projects/lwip"
+LICENSE = "BSD"
+LIC_FILES_CHKSUM = "file://COPYING;md5=59a383b05013356e0c9899b06dc5da3f"
+
+SRCREV_lwip = "bcb4afa886408bf0a1dde9c2a4a00323c8b07eb1"
+SRC_URI = "\
+    git://git.savannah.gnu.org/lwip.git;protocol=git;nobranch=1;destsuffix=lwip;name=lwip \
+    file://lwip.patch-cvs \
+    file://lwip.dhcp_create_request-hwaddr_len.patch \
+"
+
+S="${WORKDIR}/${PN}"
+B="${S}"
+
+require lwip.inc
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/mini-os.inc b/import-layers/meta-virtualization/recipes-extended/xen/mini-os.inc
new file mode 100644
index 0000000..61c2704
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/mini-os.inc
@@ -0,0 +1,28 @@
+# Copyright (C) 2018 kebodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+require stubdom.inc
+
+# clear this out to break dependency circle
+DEPENDS = ""
+
+do_configure() {
+    ${MAKE} -C ${WORKDIR}/mini-os links
+}
+
+# Nothing to configure or compile
+do_compile[noexec] = "1"
+
+# needed because this directory isn't typically part of a sysroot
+SYSROOT_DIRS += "${prefix}/mini-os"
+RDEPENDS_${PN}-dev = "perl"
+
+FILES_${PN}-dev = "\
+    ${prefix} \
+"
+
+do_install() {
+    install -d ${D}${prefix}/mini-os
+    cp -r -t ${D}${prefix}/mini-os ${S}/*
+    rm -rf ${D}${prefix}/mini-os/scripts
+}
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/mini-os_4.9.0.bb b/import-layers/meta-virtualization/recipes-extended/xen/mini-os_4.9.0.bb
new file mode 100644
index 0000000..298bc8d
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/mini-os_4.9.0.bb
@@ -0,0 +1,18 @@
+# Copyright (C) 2017 Kurt Bodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+DESCRIPTION = "Mini-OS is a tiny OS kernel distributed with the Xen Project"
+HOMEPAGE = "https://wiki.xenproject.org/wiki/Mini-OS"
+LICENSE = "GPLv2"
+LIC_FILES_CHKSUM = "file://COPYING;md5=8a437231894440a8f7629caa372243d0"
+
+# git commit hash for tags: xen-RELEASE-4.9.0, xen-RELEASE-4.9.1, xen-RELEASE-4.9.2
+SRCREV_minios = "ca013fa9baf92f47469ba1f2e1aaa31c41d8a0bb"
+SRC_URI = "\
+    git://xenbits.xen.org/mini-os.git;protocol=git;nobranch=1;destsuffix=mini-os;name=minios \
+    file://mini-os_udivmoddi4-gcc7.patch \
+"
+S="${WORKDIR}/mini-os"
+B="${S}"
+
+require mini-os.inc
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/newlib.inc b/import-layers/meta-virtualization/recipes-extended/xen/newlib.inc
new file mode 100644
index 0000000..1fdbd0a
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/newlib.inc
@@ -0,0 +1,64 @@
+# Copyright (C) 2017 Kurt Bodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+require stubdom.inc
+
+CPPFLAGS_INCLUDE_DIR = "-isystem `${HOST_PREFIX}gcc -print-file-name=include`"
+STUBDOM_CFLAGS += "-D_I386MACH_ALLOW_HW_INTERRUPTS"
+
+export ac_cv_path_CC_FOR_TARGET="${HOST_PREFIX}gcc --sysroot=${RECIPE_SYSROOT} ${STUBDOM_CPPFLAGS} ${STUBDOM_CFLAGS}"
+export CC_FOR_TARGET="${HOST_PREFIX}gcc --sysroot=${RECIPE_SYSROOT} ${STUBDOM_CPPFLAGS} ${STUBDOM_CFLAGS}"
+
+export ac_cv_path_CXX_FOR_TARGET="${HOST_PREFIX}g++ --sysroot=${RECIPE_SYSROOT}"
+export CXX_FOR_TARGET="${HOST_PREFIX}g++ --sysroot=${RECIPE_SYSROOT}"
+
+export ac_cv_path_CPP_FOR_TARGET="${HOST_PREFIX}gcc -E --sysroot=${RECIPE_SYSROOT}"
+export CPP_FOR_TARGET="${HOST_PREFIX}gcc -E --sysroot=${RECIPE_SYSROOT}"
+
+export ac_cv_path_LD_FOR_TARGET="${HOST_PREFIX}ld --sysroot=${RECIPE_SYSROOT}"
+export LD_FOR_TARGET="${HOST_PREFIX}ld --sysroot=${RECIPE_SYSROOT}"
+
+export ac_cv_path_AS_FOR_TARGET="${HOST_PREFIX}as"
+export AS_FOR_TARGET="${HOST_PREFIX}as"
+
+export ac_cv_path_AR_FOR_TARGET="${HOST_PREFIX}ar"
+export AR_FOR_TARGET="${HOST_PREFIX}ar"
+
+export ac_cv_path_NM_FOR_TARGET="${HOST_PREFIX}nm"
+export NM_FOR_TARGET="${HOST_PREFIX}nm"
+
+export ac_cv_path_RANLIB_FOR_TARGET="${HOST_PREFIX}ranlib"
+export RANLIB_FOR_TARGET="${HOST_PREFIX}ranlib"
+
+export ac_cv_path_OBJDUMP_FOR_TARGET="${HOST_PREFIX}objdump"
+export OBJDUMP_FOR_TARGET="${HOST_PREFIX}objdump"
+
+export ac_cv_path_OBJCOPY_FOR_TARGET="${HOST_PREFIX}objcopy"
+export OBJCOPY_FOR_TARGET="${HOST_PREFIX}objcopy"
+
+export ac_cv_path_STRIP_FOR_TARGET="${HOST_PREFIX}strip"
+export STRIP_FOR_TARGET="${HOST_PREFIX}strip"
+
+export ac_cv_path_STRINGS_FOR_TARGET="${HOST_PREFIX}strings"
+export STRINGS_FOR_TARGET="${HOST_PREFIX}strings"
+
+export ac_cv_path_READELF_FOR_TARGET="${HOST_PREFIX}readelf"
+export READELF_FOR_TARGET="${HOST_PREFIX}readelf"
+
+do_configure() {
+    ${S}/configure --verbose --prefix=${prefix} --target=${GNU_TARGET_ARCH}-xen-elf --enable-newlib-io-long-long --disable-multilib
+    find ${S} -type f | xargs perl -i.bak -pe 's/\b_(tzname|daylight|timezone)\b/$1/g'
+}
+
+do_compile() {
+    ${MAKE}
+}
+
+do_install() {
+    ${MAKE} DESTDIR=${D} install
+    rm -rf ${D}/cross-root-${GNU_TARGET_ARCH}/share
+    rm -rf ${D}/cross-root-${GNU_TARGET_ARCH}/info
+    install -m 644 `${HOST_PREFIX}gcc -print-file-name=include`/stdarg.h -t ${D}/${includedir}
+    install -m 644 `${HOST_PREFIX}gcc -print-file-name=include`/stddef.h -t ${D}/${includedir}
+    install -m 644 `${HOST_PREFIX}gcc -print-file-name=include`/stdbool.h -t ${D}/${includedir}
+}
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/newlib_1.16.0.bb b/import-layers/meta-virtualization/recipes-extended/xen/newlib_1.16.0.bb
new file mode 100644
index 0000000..60672be
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/newlib_1.16.0.bb
@@ -0,0 +1,21 @@
+# Copyright (C) 2017 Kurt Bodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+DESCRIPTION = "Newlib is a C library intended for use on embedded systems."
+HOMEPAGE = "http://sourceware.org/newlib"
+LICENSE = "GPLv2 & LGPLv3 & GPLv3 & LGPLv2"
+LIC_FILES_CHKSUM = "file://COPYING.NEWLIB;md5=950f50b290e8fcf7a2d3fff61775de9b"
+
+# this is the hash of version tag 1_16_0
+SRCREV_newlib = "07b4b67a88f386ce4716a14e0ff2c2bce992b985"
+SRC_URI = "\
+    git://sourceware.org/git/newlib-cygwin.git;protocol=git;nobranch=1;destsuffix=newlib;name=newlib \
+    file://newlib.patch \
+    file://newlib-chk.patch \
+    file://newlib-stdint-size_max-fix-from-1.17.0.patch \
+"
+
+S="${WORKDIR}/newlib"
+B="${WORKDIR}/build"
+
+require newlib.inc
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/polarssl.inc b/import-layers/meta-virtualization/recipes-extended/xen/polarssl.inc
new file mode 100644
index 0000000..eae95f4
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/polarssl.inc
@@ -0,0 +1,27 @@
+# Copyright (C) 2017 Kurt Bodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+require stubdom.inc
+
+DEPENDS += "\
+    newlib \
+"
+STUBDOM_CFLAGS += "\
+    -Wno-memset-elt-size \
+    -Wno-implicit-fallthrough \
+"
+
+# nothing to configure
+do_configure[noexec] = "1"
+
+do_compile() {
+    ${MAKE} CC="${HOST_PREFIX}gcc --sysroot=${RECIPE_SYSROOT} ${STUBDOM_CPPFLAGS} ${STUBDOM_CFLAGS}"
+}
+
+do_install() {
+    install -d ${D}${includedir}
+    cp -r -t ${D}${includedir} ${S}/include/polarssl
+
+    install -d ${D}/${libdir}
+    install -m 644 -t ${D}/${libdir} ${S}/library/libpolarssl.a
+}
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/polarssl_1.1.4.bb b/import-layers/meta-virtualization/recipes-extended/xen/polarssl_1.1.4.bb
new file mode 100644
index 0000000..80ea45a
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/polarssl_1.1.4.bb
@@ -0,0 +1,19 @@
+# Copyright (C) 2017 Kurt Bodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+DESCRIPTION = "PolarSSL (now 'mbed TLS') is an open source, portable, easy to use, readable and flexible SSL library."
+HOMEPAGE = "https://tls.mbed.org"
+LICENSE = "GPLv2"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=751419260aa954499f7abaabaa882bbe"
+
+# git hash for release tag polarssl-1.1.4
+SRCREV_polarssl = "d36da11125a9c85c572a4fdf63e0a25e76d7bb18"
+SRC_URI = "\
+    git://github.com/ARMmbed/mbedtls.git;protocol=https;nobranch=1;destsuffix=polarssl;name=polarssl \
+    file://polarssl.patch; \
+"
+
+S="${WORKDIR}/${PN}"
+B="${S}/library"
+
+require polarssl.inc
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/stubdom-gmp.inc b/import-layers/meta-virtualization/recipes-extended/xen/stubdom-gmp.inc
new file mode 100644
index 0000000..ef6473d
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/stubdom-gmp.inc
@@ -0,0 +1,37 @@
+# Copyright (C) 2017 Kurt Bodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+require stubdom.inc
+
+DEPENDS += "\
+    newlib \
+"
+
+do_configure() {
+    # need to modify prefix here during configure otherwise OE-level variables
+    # (prefix, libdir, includedir, etc...) defined in stubdom.inc get messed up
+    CPPFLAGS="-isystem ${RECIPE_SYSROOT}/cross-root-${GNU_TARGET_ARCH}/${GNU_TARGET_ARCH}-xen-elf/include ${STUBDOM_CPPFLAGS}" \
+    CFLAGS="${STUBDOM_CFLAGS}" \
+    CC="${HOST_PREFIX}gcc --sysroot=${RECIPE_SYSROOT}" \
+    ${S}/configure \
+        --disable-shared \
+        --enable-static \
+        --disable-fft \
+        --without-readline \
+        --with-gnu-ld \
+        --prefix=${prefix}/${GNU_TARGET_ARCH}-xen-elf \
+        --libdir=${libdir} \
+        --build=`${HOST_PREFIX}gcc -dumpmachine` \
+        --host=${GNU_TARGET_ARCH}-xen-elf
+
+    sed -i 's/#define HAVE_OBSTACK_VPRINTF 1/\/\/#define HAVE_OBSTACK_VPRINTF 1/' ${S}/config.h
+}
+
+do_compile() {
+    ${MAKE}
+}
+
+do_install() {
+    ${MAKE} DESTDIR=${D} install
+    rm -rf ${D}${prefix}/${GNU_TARGET_ARCH}-xen-elf/share
+}
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/stubdom-gmp_4.3.2.bb b/import-layers/meta-virtualization/recipes-extended/xen/stubdom-gmp_4.3.2.bb
new file mode 100644
index 0000000..d9a2adb
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/stubdom-gmp_4.3.2.bb
@@ -0,0 +1,20 @@
+# Copyright (C) 2017 Kurt Bodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+DESCRIPTION = "GMP library for Xen vTPM's."
+HOMEPAGE = "http://gmp"
+LICENSE = "GPLv3"
+LIC_FILES_CHKSUM = "file://COPYING;md5=d32239bcb673463ab874e80d47fae504 \
+                    file://COPYING.LIB;md5=6a6a8e020838b23406c81b19c1d46df6 \
+"
+
+SRC_URI = "\
+    https://gmplib.org/download/gmp/archive/gmp-${PV}.tar.bz2 \
+"
+SRC_URI[md5sum] = "dd60683d7057917e34630b4a787932e8"
+SRC_URI[sha256sum] = "936162c0312886c21581002b79932829aa048cfaf9937c6265aeaa14f1cd1775"
+
+S="${WORKDIR}/gmp-${PV}"
+B="${S}"
+
+require stubdom-gmp.inc
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/stubdom.inc b/import-layers/meta-virtualization/recipes-extended/xen/stubdom.inc
new file mode 100644
index 0000000..bfc6752
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/stubdom.inc
@@ -0,0 +1,152 @@
+# Copyright (C) 2017 Kurt Bodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+COMPATIBLE_HOST = '(x86_64.*).*-linux'
+
+require xen-arch.inc
+
+# many of the xen stubdom related recipes build and package static instead of shared libraries
+EXCLUDE_FROM_SHLIBS = "1"
+
+# base set of dependencies to be used for xen stubdom recipes
+DEPENDS += "\
+    lwip \
+    mini-os \
+"
+
+# unset EVERYTHING from the OE environment.
+# Weird things happen when these are exported into the environment.
+unset CFLAGS
+unset BUILD_CFLAGS
+unset TARGET_CFLAGS
+unset CFLAGS_FOR_BUILD
+
+unset CPPFLAGS
+unset BUILD_CPPFLAGS
+unset TARGET_CPPFLAGS
+unset CPPFLAGS_FOR_BUILD
+
+unset LDFLAGS
+unset BUILD_LDFLAGS
+unset TARGET_LDFLAGS
+unset LDFLAGS_FOR_BUILD
+
+unset CXXFLAGS
+unset TARGET_CXXFLAGS
+unset BUILD_CXXFLAGS
+unset CXXFLAGS_FOR_BUILD
+
+unset BUILD_CC
+unset BUILD_CPP
+unset BUILD_CXX
+unset BUILD_LD
+unset BUILD_AR
+unset BUILD_AS
+unset BUILD_CCLD
+unset BUILD_FC
+unset BUILD_RANLIB
+unset BUILD_NM
+unset BUILD_STRIP
+unset BUILD_READELF
+unset BUILD_OBJCOPY
+unset BUILD_OBJDUMP
+unset CC
+unset CPP
+unset CXX
+unset LD
+unset AR
+unset AS
+unset NM
+unset RANLIB
+unset STRIP
+unset STRINGS
+unset READELF
+unset OBJCOPY
+unset OBJDUMP
+unset READELF
+unset CCLD
+unset FC
+
+# Provide support to build both 32-bit and 64-bit stubdoms
+python () {
+    gnu_dict = {
+            'x86_32': 'i686',
+            'x86_64': 'x86_64',
+        }
+
+    if d.expand('${XEN_TARGET_ARCH}') == 'x86_32':
+        d.setVar("GNU_TARGET_ARCH",gnu_dict[d.expand('${XEN_TARGET_ARCH}')])
+        d.setVar("PACKAGE_ARCH","core2-32")
+    elif d.expand('${XEN_TARGET_ARCH}') == 'x86_64':
+        d.setVar("GNU_TARGET_ARCH",gnu_dict[d.expand('${XEN_TARGET_ARCH}')])
+}
+
+export GNU_TARGET_ARCH
+export XEN_TARGET_ARCH="${@map_xen_arch(d.getVar('TARGET_ARCH'), d)}"
+export XEN_COMPILE_ARCH="${@map_xen_arch(d.getVar('BUILD_ARCH'), d)}"
+
+LWIP_SRCDIR = "${RECIPE_SYSROOT}/cross-root-${GNU_TARGET_ARCH}/lwip"
+MINIOS_SRCDIR = "${RECIPE_SYSROOT}/cross-root-${GNU_TARGET_ARCH}/mini-os"
+
+# Base set of CPPFLAGS, CFLAGS needed for each component used to build MiniOS-based stubdoms
+# LDFLAGS are only used when building stubdoms, so only used in stubdom recipes
+# Generic name given because each library uses DEF_, BUILD_, TARGET_, and xxxFLAGS differently
+CPPFLAGS_INCLUDE_DIR = "-isystem ${RECIPE_SYSROOT}/cross-root-${GNU_TARGET_ARCH}/${GNU_TARGET_ARCH}-xen-elf/include"
+
+STUBDOM_CPPFLAGS += "\
+    -isystem ${MINIOS_SRCDIR}/include \
+    -D__MINIOS__ \
+    -DHAVE_LIBC \
+    -isystem ${MINIOS_SRCDIR}/include/posix \
+    -isystem ${MINIOS_SRCDIR}/include/xen \
+    -isystem ${MINIOS_SRCDIR}/include/x86 \
+    -isystem ${MINIOS_SRCDIR}/include/x86/${XEN_TARGET_ARCH} \
+    -U __linux__ \
+    -U __FreeBSD__ \
+    -U __sun__ \
+    -nostdinc \
+    ${CPPFLAGS_INCLUDE_DIR} \
+    -isystem ${LWIP_SRCDIR}/include \
+    -isystem ${LWIP_SRCDIR}/include/ipv4 \
+"
+
+STUBDOM_CFLAGS += "\
+    -mno-red-zone \
+    -O1 \
+    -fno-omit-frame-pointer \
+    -m64 \
+    -fno-reorder-blocks \
+    -fno-asynchronous-unwind-tables \
+    -DBUILD_ID \
+    -fno-strict-aliasing \
+    -std=gnu99 \
+    -Wall \
+    -Wstrict-prototypes \
+    -Wdeclaration-after-statement \
+    -Wno-unused-but-set-variable \
+    -Wno-unused-local-typedefs \
+    -fno-stack-protector \
+    -fno-exceptions \
+"
+
+STUBDOM_LDFLAGS = "\
+    -nostdlib \
+    -L${RECIPE_SYSROOT}/cross-root-${GNU_TARGET_ARCH}/${GNU_TARGET_ARCH}-xen-elf/lib \
+"
+
+# Need to redefine these for stubdom-related builds. It all starts because of
+# the prefix used in newlib and then continues because we don't want to
+# cross-contaminate stubdom-related recipes with headers and libraries found in
+# the OE-defined locations
+export prefix="/cross-root-${GNU_TARGET_ARCH}"
+export includedir="${prefix}/${GNU_TARGET_ARCH}-xen-elf/include"
+export libdir="${prefix}/${GNU_TARGET_ARCH}-xen-elf/lib"
+export libexecdir="${libdir}"
+export STAGING_INCDIR
+export STAGING_LIBDIR
+
+# Typically defined in Xen and Minios .mk files that aren't sourced/read,
+# defined to trigger some values and paths in Makefiles
+export debug="y"
+export stubdom="y"
+export XEN_OS="MiniOS"
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/tpm-emulator.inc b/import-layers/meta-virtualization/recipes-extended/xen/tpm-emulator.inc
new file mode 100644
index 0000000..f58a276
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/tpm-emulator.inc
@@ -0,0 +1,37 @@
+# Copyright (C) 2017 Kurt Bodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+require stubdom.inc
+
+DEPENDS += "\
+    cmake-native \
+    newlib \
+    stubdom-gmp \
+"
+
+# nothing to configure
+do_configure[noexec] = "1"
+
+export CMAKE_C_FLAGS = "\
+    -std=c99 \
+    -DTPM_NO_EXTERN \
+    ${STUBDOM_CPPFLAGS} \
+    ${STUBDOM_CFLAGS} \
+    -Wno-declaration-after-statement \
+    -Wno-implicit-fallthrough \
+"
+
+do_compile() {
+    CC="${HOST_PREFIX}gcc --sysroot=${RECIPE_SYSROOT}" cmake .. -DCMAKE_C_FLAGS:STRING="${CMAKE_C_FLAGS}"
+    ${MAKE} VERBOSE=1 tpm_crypto tpm
+}
+
+do_install() {
+    install -d ${D}/${libdir}
+    install -m 644 -t ${D}/${libdir} ${B}/crypto/libtpm_crypto.a
+    install -m 644 -t ${D}/${libdir} ${B}/tpm/libtpm.a
+
+    install -D -m 644 -t ${D}/${includedir}/tpm-emulator/build ${S}/build/config.h
+    install -D -m 644 -t ${D}/${includedir}/tpm-emulator/crypto ${S}/crypto/*.h
+    install -D -m 644 -t ${D}/${includedir}/tpm-emulator/tpm ${S}/tpm/*.h
+}
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/tpm-emulator_0.7.4.bb b/import-layers/meta-virtualization/recipes-extended/xen/tpm-emulator_0.7.4.bb
new file mode 100644
index 0000000..f626929
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/tpm-emulator_0.7.4.bb
@@ -0,0 +1,26 @@
+# Copyright (C) 2017 Kurt Bodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+DESCRIPTION = "TPM Emulator"
+HOMEPAGE = "http://xenbits.xen.org/xen-extfiles"
+LICENSE = "GPLv2"
+LIC_FILES_CHKSUM = "file://README;md5=eeabd77cf8fd8a8bc42983884cb09863"
+
+SRC_URI = "\
+    http://xenbits.xen.org/xen-extfiles/tpm_emulator-${PV}.tar.gz;name=tpm-emulator \
+    file://tpmemu-0.7.4.patch \
+    file://vtpm-bufsize.patch \
+    file://vtpm-locality.patch \
+    file://vtpm-parent-sign-ek.patch \
+    file://vtpm-deepquote.patch \
+    file://vtpm-deepquote-anyloc.patch \
+    file://vtpm-cmake-Wextra.patch \
+    file://vtpm-implicit-fallthrough.patch \
+"
+SRC_URI[tpm-emulator.md5sum] = "e26becb8a6a2b6695f6b3e8097593db8"
+SRC_URI[tpm-emulator.sha256sum] = "4e48ea0d83dd9441cc1af04ab18cd6c961b9fa54d5cbf2c2feee038988dea459"
+
+S="${WORKDIR}/tpm_emulator-${PV}"
+B="${S}/build"
+
+require tpm-emulator.inc
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/xen-vtpm.inc b/import-layers/meta-virtualization/recipes-extended/xen/xen-vtpm.inc
new file mode 100644
index 0000000..a94c750
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/xen-vtpm.inc
@@ -0,0 +1,111 @@
+# Copyright (C) 2017 Kurt Bodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+require stubdom.inc
+
+DEPENDS = "\
+    newlib \
+    lwip \
+    mini-os \
+    polarssl \
+    stubdom-gmp \
+    tpm-emulator \
+"
+# These were unset by stubdom.inc to allow us to scope them per recipe
+export CC="${HOST_PREFIX}gcc --sysroot=${RECIPE_SYSROOT}"
+export CCLD="${HOST_PREFIX}gcc --sysroot=${RECIPE_SYSROOT}"
+export CXX="${HOST_PREFIX}g++ --sysroot=${RECIPE_SYSROOT}"
+export CPP="${HOST_PREFIX}gcc -E --sysroot=${RECIPE_SYSROOT}"
+export LD="${HOST_PREFIX}ld --sysroot=${RECIPE_SYSROOT}"
+export LD_LTO="${HOST_PREFIX}ld --sysroot=${RECIPE_SYSROOT}"
+export AS="${HOST_PREFIX}as"
+export AR="${HOST_PREFIX}ar"
+export NM="${HOST_PREFIX}nm"
+export RANLIB="${HOST_PREFIX}ranlib"
+export OBJDUMP="${HOST_PREFIX}objdump"
+export OBJCOPY="${HOST_PREFIX}objcopy"
+export STRIP="${HOST_PREFIX}strip"
+export STRINGS="${HOST_PREFIX}strings"
+export READELF="${HOST_PREFIX}readelf"
+
+
+# Required for some of the config stuff
+export STUBDOM_TARGETS="vtpm vtpmmgr"
+
+VTPM_CPPFLAGS = "\
+    -I${RECIPE_SYSROOT}/cross-root-${GNU_TARGET_ARCH}/${GNU_TARGET_ARCH}-xen-elf/include/tpm-emulator/build \
+    -I${RECIPE_SYSROOT}/cross-root-${GNU_TARGET_ARCH}/${GNU_TARGET_ARCH}-xen-elf/include/tpm-emulator/crypto \
+    -I${RECIPE_SYSROOT}/cross-root-${GNU_TARGET_ARCH}/${GNU_TARGET_ARCH}-xen-elf/include/tpm-emulator/tpm \
+    -I${RECIPE_SYSROOT}/cross-root-${GNU_TARGET_ARCH}/${GNU_TARGET_ARCH}-xen-elf/include/tpm-emulator \
+"
+
+# The includes from this Xen directory are not in the MiniOS repo, although they probably should be.
+STUBDOM_CPPFLAGS += "-isystem ${B}/include/"
+
+do_configure() {
+
+    # GCC 7 fails linking header defined inlines if not declared 'static' or 'extern'
+    # This appears to be fixed in Xen 4.10.0+, so let's look at version of Xen source
+    # to determine if we need to modify inline declarations.
+    #
+    # 'echo -e' to enable interpretation of backslashes
+    # 'sort -V' to natural sort version numbers
+    # 'head -n1' to capture the first line of output from sort command
+
+    if [ "${PV}" = "$(echo "${PV};4.9.999" | sed 's/;/\n/' | sort -V | head -n1)" ]; then
+        sed -i "s/^inline/static inline/g" ${B}/vtpmmgr/*.h
+    fi
+
+    for i in AR AS NM RANLIB OBJDUMP OBJCOPY STRIP STRINGS READELF CXX LD LD_LTO CC CPP; do
+        sed -i "s/^\($i\s\s*\).*=/\1?=/" ${MINIOS_SRCDIR}/Config.mk
+    done
+
+    # replicate the TARGETS_MINIOS target in xen/stubdom/Makefile
+    for i in ${STUBDOM_TARGETS}; do
+        [ -d ${B}/mini-os-${XEN_TARGET_ARCH}-$i ] ||
+        for j in $(cd ${MINIOS_SRCDIR} ; find . -type d) ; do \
+                mkdir -p ${B}/mini-os-${XEN_TARGET_ARCH}-$i/$j; \
+        done
+    done
+}
+
+do_compile() {
+    ${MAKE} MINIOS_CONFIG="${B}/vtpm/minios.cfg" CONFIG_FILE="${B}/vtpm-minios-config.mk" DESTDIR= -C ${MINIOS_SRCDIR} config
+    CPPFLAGS="`cat ${B}/vtpm-minios-config.mk` ${STUBDOM_CPPFLAGS} ${VTPM_CPPFLAGS}" CFLAGS="${STUBDOM_CFLAGS}" ${MAKE} -C ${B}/vtpm
+    DEF_CPPFLAGS="${STUBDOM_CPPFLAGS}" \
+        DEF_CFLAGS="${STUBDOM_CFLAGS}" \
+        DEF_LDFLAGS="${STUBDOM_LDFLAGS}" \
+        MINIOS_CONFIG="${B}/vtpm/minios.cfg" \
+        ${MAKE} -C ${MINIOS_SRCDIR} \
+        OBJ_DIR=${B}/mini-os-${XEN_TARGET_ARCH}-vtpm \
+        APP_OBJS="${B}/vtpm/vtpm.a" \
+        APP_LDLIBS="-ltpm -ltpm_crypto -lgmp -lpolarssl"
+
+    ${MAKE} MINIOS_CONFIG="${B}/vtpmmgr/minios.cfg" CONFIG_FILE="${B}/vtpmmgr-minios-config.mk" DESTDIR= -C ${MINIOS_SRCDIR} config
+    CPPFLAGS="`cat ${B}/vtpmmgr-minios-config.mk` ${STUBDOM_CPPFLAGS}" CFLAGS="${STUBDOM_CFLAGS}" ${MAKE} -C ${B}/vtpmmgr
+    DEF_CPPFLAGS="${STUBDOM_CPPFLAGS}" \
+        DEF_CFLAGS="${STUBDOM_CFLAGS}" \
+        DEF_LDFLAGS="${STUBDOM_LDFLAGS}" \
+        MINIOS_CONFIG="${B}/vtpmmgr/minios.cfg" \
+        ${MAKE} -C ${MINIOS_SRCDIR} \
+        OBJ_DIR=${B}/mini-os-${XEN_TARGET_ARCH}-vtpmmgr \
+        APP_OBJS="${B}/vtpmmgr/vtpmmgr.a" \
+        APP_LDLIBS="-lm -lpolarssl"
+}
+
+PACKAGES = "\
+    ${PN}-vtpm-stubdom \
+    ${PN}-vtpmmgr-stubdom \
+"
+FILES_${PN}-vtpm-stubdom="\
+    ${libdir}/xen/boot/vtpm-stubdom.gz \
+"
+
+FILES_${PN}-vtpmmgr-stubdom="\
+    ${libdir}/xen/boot/vtpmmgr-stubdom.gz \
+"
+
+do_install() {
+    install -m 644 -D ${B}/mini-os-${XEN_TARGET_ARCH}-vtpm/mini-os.gz ${D}${libdir}/xen/boot/vtpm-stubdom.gz
+    install -m 644 -D ${B}/mini-os-${XEN_TARGET_ARCH}-vtpmmgr/mini-os.gz ${D}${libdir}/xen/boot/vtpmmgr-stubdom.gz
+}
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/xen-vtpm_4.9.0.bb b/import-layers/meta-virtualization/recipes-extended/xen/xen-vtpm_4.9.0.bb
new file mode 100644
index 0000000..c58a02d
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/xen-vtpm_4.9.0.bb
@@ -0,0 +1,21 @@
+# Copyright (C) 2017 Kurt Bodiker <kurt.bodiker@braintrust-us.com>
+# Released under the MIT license (see COPYING.MIT for the terms)
+
+DESCRIPTION = "MiniOS-based vTPMs for Xen"
+HOMEPAGE = "https://www.xenproject.org"
+LICENSE = "GPLv2 & BSD-3-Clause"
+LIC_FILES_CHKSUM = "file://COPYING;md5=b1ceb1b03a49b202ee6f41ffd1ed0155 \
+                    file://vtpm/COPYING;md5=75a98062ab0322ded060d9026a1bda61 \
+"
+
+# git commit hash for Xen's RELEASE-4.9.0 tag
+SRCREV_xen = "c30bf55594a53fae8aae08aabf16fc192faad7da"
+SRC_URI = "\
+    git://xenbits.xen.org/xen.git;protocol=git;nobranch=1;name=xen;subpath=stubdom \
+    git://xenbits.xen.org/xen.git;protocol=git;nobranch=1;name=xen;destsuffix=stubdom/include;subpath=tools/xenstore/include \
+"
+
+S="${WORKDIR}/stubdom"
+B="${S}"
+
+require xen-vtpm.inc
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/xen.inc b/import-layers/meta-virtualization/recipes-extended/xen/xen.inc
index cb314f8..8dfe589 100644
--- a/import-layers/meta-virtualization/recipes-extended/xen/xen.inc
+++ b/import-layers/meta-virtualization/recipes-extended/xen/xen.inc
@@ -62,15 +62,12 @@
 
 RDEPENDS_${PN}-base = "\
     bash perl xz \
-    ${PN}-blktap \
     ${PN}-console \
-    ${PN}-libblktapctl \
     ${PN}-libxenguest \
     ${PN}-libxenlight \
     ${PN}-libxenvchan \
     ${PN}-libxenctrl \
     ${PN}-libxlutil \
-    ${PN}-libvhd \
     ${PN}-libxenstat \
     ${PN}-libxenstore \
     ${PN}-libfsimage \
@@ -88,7 +85,10 @@
 RDEPENDS_${PN}-dev = ""
 
 RRECOMMENDS_${PN}-base = " \
+    ${PN}-blktap \
     ${PN}-libblktap \
+    ${PN}-libblktapctl \
+    ${PN}-libvhd \
     ${PN}-flask \
     ${PN}-hvmloader \
     ${PN}-xenpaging \
@@ -196,6 +196,8 @@
     ${PN}-libxenstat-dev \
     ${PN}-libxenstore \
     ${PN}-libxenstore-dev \
+    ${PN}-libxentoolcore \
+    ${PN}-libxentoolcore-dev \
     ${PN}-libxentoollog \
     ${PN}-libxentoollog-dev \
     ${PN}-libxenvchan \
@@ -344,6 +346,12 @@
     ${datadir}/pkgconfig/xenstore.pc \
     "
 
+FILES_${PN}-libxentoolcore = "${libdir}/libxentoolcore.so.*"
+FILES_${PN}-libxentoolcore-dev = " \
+    ${libdir}/libxentoolcore.so \
+    ${datadir}/pkgconfig/xentoolcore.pc \
+    "
+
 FILES_${PN}-libxentoollog = "${libdir}/libxentoollog.so.*"
 FILES_${PN}-libxentoollog-dev = " \
     ${libdir}/libxentoollog.so \
@@ -474,6 +482,7 @@
     ${sbindir}/xenperf \
     ${sbindir}/xenpm \
     ${sbindir}/xsview \
+    ${sbindir}/xen-diag \
     ${sbindir}/xen-tmem-list-parse \
     ${sbindir}/xen-python-path \
     ${sbindir}/xen-ringwatch \
@@ -739,8 +748,6 @@
     ${systemd_unitdir}/system/xenconsoled.service \
     ${systemd_unitdir}/system/xen-init-dom0.service \
     ${systemd_unitdir}/system/xenstored.service \
-    ${systemd_unitdir}/system/xenstored.socket \
-    ${systemd_unitdir}/system/xenstored_ro.socket \
     ${systemd_unitdir}/system/var-lib-xenstored.mount \
     "
 
@@ -780,8 +787,6 @@
     xenconsoled.service \
     xen-init-dom0.service \
     xenstored.service \
-    xenstored.socket \
-    xenstored_ro.socket \
     "
 SYSTEMD_SERVICE_${PN}-xendomains = "xendomains.service"
 
@@ -825,7 +830,7 @@
 # Yocto injects -mfpmath=sse for some machine types into the CFLAGS which
 # conflicts with -mno-sse so instead we strip -mfpmath=sse instead of
 # patching the build to be ok with this
-TUNE_CCARGS := "${@oe_filter_out('-mfpmath=sse', '${TUNE_CCARGS}', d)}"
+TUNE_CCARGS := "${@oe.utils.str_filter_out('-mfpmath=sse', '${TUNE_CCARGS}', d)}"
 
 EXTRA_OECONF += " \
     --exec-prefix=/usr \
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/xen_4.10.0.bb b/import-layers/meta-virtualization/recipes-extended/xen/xen_4.10.0.bb
new file mode 100644
index 0000000..d314b9b
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/xen_4.10.0.bb
@@ -0,0 +1,12 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
+require xen.inc
+
+SRC_URI = " \
+    https://downloads.xenproject.org/release/xen/${PV}/xen-${PV}.tar.gz \
+    file://xsa253.patch \
+    "
+
+SRC_URI[md5sum] = "ab9d320d02cb40f6b40506aed1a38d58"
+SRC_URI[sha256sum] = "0262a7023f8b12bcacfb0b25e69b2a63291f944f7683d54d8f33d4b2ca556844"
+
+S = "${WORKDIR}/xen-${PV}"
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/xen_4.9.0.bb b/import-layers/meta-virtualization/recipes-extended/xen/xen_4.9.0.bb
deleted file mode 100644
index 8e9c802..0000000
--- a/import-layers/meta-virtualization/recipes-extended/xen/xen_4.9.0.bb
+++ /dev/null
@@ -1,12 +0,0 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
-require xen.inc
-
-SRC_URI = " \
-    https://downloads.xenproject.org/release/xen/${PV}/xen-${PV}.tar.gz \
-    file://fix-libxc-xc_dom_arm-missing-initialization.patch \
-    "
-
-SRC_URI[md5sum] = "f0a753637630f982dfbdb64121fd71e1"
-SRC_URI[sha256sum] = "cade643fe3310d4d6f97d0c215c6fa323bc1130d7e64d7e2043ffaa73a96f33b"
-
-S = "${WORKDIR}/xen-${PV}"
diff --git a/import-layers/meta-virtualization/recipes-extended/xen/xen_4.9.1.bb b/import-layers/meta-virtualization/recipes-extended/xen/xen_4.9.1.bb
new file mode 100644
index 0000000..5c18bb0
--- /dev/null
+++ b/import-layers/meta-virtualization/recipes-extended/xen/xen_4.9.1.bb
@@ -0,0 +1,18 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
+require xen.inc
+
+SRC_URI = " \
+    https://downloads.xenproject.org/release/xen/${PV}/xen-${PV}.tar.gz \
+    file://xsa246-4.9.patch \
+    file://0001-p2m-Always-check-to-see-if-removing-a-p2m-entry-actu.patch \
+    file://0002-p2m-Check-return-value-of-p2m_set_entry-when-decreas.patch \
+    file://xsa248.patch \
+    file://xsa249.patch \
+    file://xsa250.patch \
+    file://xsa251.patch \
+    "
+
+SRC_URI[md5sum] = "8b9d6104694b164d54334194135f7217"
+SRC_URI[sha256sum] = "ecf88b01f44cd8f4ef208af3f999dceb69bdd2a316d88dd9a9535ea7b49ed356"
+
+S = "${WORKDIR}/xen-${PV}"