kernel: Move to Linux v5.0.7-openpower1
This contains upstream commit fd9c40f64c51 ("block: Revert v5.0
blk_mq_request_issue_directly() changes") which has not yet been
released in a stable tree.
This should resolve the issues seen with v5.0.6-openpower1.
PowerPC fixes:
powerpc/64s: Clear on-stack exception marker upon exception return
powerpc/ptrace: Mitigate potential Spectre v1
powerpc/hugetlb: Handle mmap_min_addr correctly in get_unmapped_area callback
powerpc/xmon: Fix opcode being uninitialized in print_insn_powerpc
powerpc/powernv/ioda: Fix locked_vm counting for memory used by IOMMU tables
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
diff --git a/openpower/configs/barreleye_defconfig b/openpower/configs/barreleye_defconfig
index 135cf10..6bad11b 100644
--- a/openpower/configs/barreleye_defconfig
+++ b/openpower/configs/barreleye_defconfig
@@ -16,7 +16,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/firenze_defconfig b/openpower/configs/firenze_defconfig
index 866a112..3466db7 100644
--- a/openpower/configs/firenze_defconfig
+++ b/openpower/configs/firenze_defconfig
@@ -14,7 +14,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/firestone_defconfig b/openpower/configs/firestone_defconfig
index 31c1ef6..c81935e 100644
--- a/openpower/configs/firestone_defconfig
+++ b/openpower/configs/firestone_defconfig
@@ -16,7 +16,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/garrison_defconfig b/openpower/configs/garrison_defconfig
index c0d732b..f15ea2c 100644
--- a/openpower/configs/garrison_defconfig
+++ b/openpower/configs/garrison_defconfig
@@ -16,7 +16,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/habanero_defconfig b/openpower/configs/habanero_defconfig
index 7dc9d14..629890f 100644
--- a/openpower/configs/habanero_defconfig
+++ b/openpower/configs/habanero_defconfig
@@ -16,7 +16,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/opal_defconfig b/openpower/configs/opal_defconfig
index e38f78f..ecbd209 100644
--- a/openpower/configs/opal_defconfig
+++ b/openpower/configs/opal_defconfig
@@ -12,7 +12,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/p8dtu_defconfig b/openpower/configs/p8dtu_defconfig
index 2b9c94a..4d88124 100644
--- a/openpower/configs/p8dtu_defconfig
+++ b/openpower/configs/p8dtu_defconfig
@@ -17,7 +17,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/p9dsu_defconfig b/openpower/configs/p9dsu_defconfig
index 7478fec..b81830c 100644
--- a/openpower/configs/p9dsu_defconfig
+++ b/openpower/configs/p9dsu_defconfig
@@ -16,7 +16,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/palmetto_defconfig b/openpower/configs/palmetto_defconfig
index eb7713f..8ef70db 100644
--- a/openpower/configs/palmetto_defconfig
+++ b/openpower/configs/palmetto_defconfig
@@ -14,7 +14,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/pseries_defconfig b/openpower/configs/pseries_defconfig
index 8833d87..882f872 100644
--- a/openpower/configs/pseries_defconfig
+++ b/openpower/configs/pseries_defconfig
@@ -15,7 +15,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/pseries_skiroot_defconfig"
diff --git a/openpower/configs/romulus_defconfig b/openpower/configs/romulus_defconfig
index db3a854..4ff51df 100644
--- a/openpower/configs/romulus_defconfig
+++ b/openpower/configs/romulus_defconfig
@@ -16,7 +16,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/vesnin_defconfig b/openpower/configs/vesnin_defconfig
index 08a03fe..12bf68d 100644
--- a/openpower/configs/vesnin_defconfig
+++ b/openpower/configs/vesnin_defconfig
@@ -15,7 +15,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/witherspoon_defconfig b/openpower/configs/witherspoon_defconfig
index 0abe4fa..9d2371a 100644
--- a/openpower/configs/witherspoon_defconfig
+++ b/openpower/configs/witherspoon_defconfig
@@ -16,7 +16,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/zaius_defconfig b/openpower/configs/zaius_defconfig
index 1c46354..d097242 100644
--- a/openpower/configs/zaius_defconfig
+++ b/openpower/configs/zaius_defconfig
@@ -16,7 +16,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/configs/zz_defconfig b/openpower/configs/zz_defconfig
index d688073..50e59e0 100644
--- a/openpower/configs/zz_defconfig
+++ b/openpower/configs/zz_defconfig
@@ -14,7 +14,7 @@
BR2_ROOTFS_POST_BUILD_SCRIPT="../openpower/scripts/fixup-target-var ../openpower/scripts/firmware-whitelist"
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.6"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.0.7"
BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_OP_BUILD_PATH)/linux"
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_OP_BUILD_PATH)/configs/linux/skiroot_defconfig"
diff --git a/openpower/linux/0001-xhci-Reset-controller-on-xhci-shutdown.patch b/openpower/linux/0001-xhci-Reset-controller-on-xhci-shutdown.patch
index 60a66a9..0381a06 100644
--- a/openpower/linux/0001-xhci-Reset-controller-on-xhci-shutdown.patch
+++ b/openpower/linux/0001-xhci-Reset-controller-on-xhci-shutdown.patch
@@ -1,7 +1,7 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Brian King <brking@linux.vnet.ibm.com>
Date: Wed, 25 Oct 2017 10:42:59 +1100
-Subject: [PATCH 1/2] xhci: Reset controller on xhci shutdown
+Subject: [PATCH 1/3] xhci: Reset controller on xhci shutdown
Fixes kexec boot. Without a hard reset, some USB chips will fail to
initialize in a kexec booted kernel.
diff --git a/openpower/linux/0002-block-Revert-v5.0-blk_mq_request_issue_directly-chan.patch b/openpower/linux/0002-block-Revert-v5.0-blk_mq_request_issue_directly-chan.patch
new file mode 100644
index 0000000..7048c4a
--- /dev/null
+++ b/openpower/linux/0002-block-Revert-v5.0-blk_mq_request_issue_directly-chan.patch
@@ -0,0 +1,285 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Bart Van Assche <bvanassche@acm.org>
+Date: Thu, 4 Apr 2019 10:08:43 -0700
+Subject: [PATCH 2/3] block: Revert v5.0 blk_mq_request_issue_directly()
+ changes
+
+blk_mq_try_issue_directly() can return BLK_STS*_RESOURCE for requests that
+have been queued. If that happens when blk_mq_try_issue_directly() is called
+by the dm-mpath driver then dm-mpath will try to resubmit a request that is
+already queued and a kernel crash follows. Since it is nontrivial to fix
+blk_mq_request_issue_directly(), revert the blk_mq_request_issue_directly()
+changes that went into kernel v5.0.
+
+This patch reverts the following commits:
+* d6a51a97c0b2 ("blk-mq: replace and kill blk_mq_request_issue_directly") # v5.0.
+* 5b7a6f128aad ("blk-mq: issue directly with bypass 'false' in blk_mq_sched_insert_requests") # v5.0.
+* 7f556a44e61d ("blk-mq: refactor the code of issue request directly") # v5.0.
+
+Cc: Christoph Hellwig <hch@infradead.org>
+Cc: Ming Lei <ming.lei@redhat.com>
+Cc: Jianchao Wang <jianchao.w.wang@oracle.com>
+Cc: Hannes Reinecke <hare@suse.com>
+Cc: Johannes Thumshirn <jthumshirn@suse.de>
+Cc: James Smart <james.smart@broadcom.com>
+Cc: Dongli Zhang <dongli.zhang@oracle.com>
+Cc: Laurence Oberman <loberman@redhat.com>
+Cc: <stable@vger.kernel.org>
+Reported-by: Laurence Oberman <loberman@redhat.com>
+Tested-by: Laurence Oberman <loberman@redhat.com>
+Fixes: 7f556a44e61d ("blk-mq: refactor the code of issue request directly") # v5.0.
+Signed-off-by: Bart Van Assche <bvanassche@acm.org>
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+(cherry picked from commit fd9c40f64c514bdc585a21e2e33fa5f83ca8811b)
+Signed-off-by: Joel Stanley <joel@jms.id.au>
+---
+ block/blk-core.c | 4 +-
+ block/blk-mq-sched.c | 8 +--
+ block/blk-mq.c | 122 ++++++++++++++++++++++---------------------
+ block/blk-mq.h | 6 +--
+ 4 files changed, 71 insertions(+), 69 deletions(-)
+
+diff --git a/block/blk-core.c b/block/blk-core.c
+index 6b78ec56a4f2..5bde73a49399 100644
+--- a/block/blk-core.c
++++ b/block/blk-core.c
+@@ -1246,8 +1246,6 @@ static int blk_cloned_rq_check_limits(struct request_queue *q,
+ */
+ blk_status_t blk_insert_cloned_request(struct request_queue *q, struct request *rq)
+ {
+- blk_qc_t unused;
+-
+ if (blk_cloned_rq_check_limits(q, rq))
+ return BLK_STS_IOERR;
+
+@@ -1263,7 +1261,7 @@ blk_status_t blk_insert_cloned_request(struct request_queue *q, struct request *
+ * bypass a potential scheduler on the bottom device for
+ * insert.
+ */
+- return blk_mq_try_issue_directly(rq->mq_hctx, rq, &unused, true, true);
++ return blk_mq_request_issue_directly(rq, true);
+ }
+ EXPORT_SYMBOL_GPL(blk_insert_cloned_request);
+
+diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c
+index 140933e4a7d1..0c98b6c1ca49 100644
+--- a/block/blk-mq-sched.c
++++ b/block/blk-mq-sched.c
+@@ -423,10 +423,12 @@ void blk_mq_sched_insert_requests(struct blk_mq_hw_ctx *hctx,
+ * busy in case of 'none' scheduler, and this way may save
+ * us one extra enqueue & dequeue to sw queue.
+ */
+- if (!hctx->dispatch_busy && !e && !run_queue_async)
++ if (!hctx->dispatch_busy && !e && !run_queue_async) {
+ blk_mq_try_issue_list_directly(hctx, list);
+- else
+- blk_mq_insert_requests(hctx, ctx, list);
++ if (list_empty(list))
++ return;
++ }
++ blk_mq_insert_requests(hctx, ctx, list);
+ }
+
+ blk_mq_run_hw_queue(hctx, run_queue_async);
+diff --git a/block/blk-mq.c b/block/blk-mq.c
+index b9283b63d116..16f9675c57e6 100644
+--- a/block/blk-mq.c
++++ b/block/blk-mq.c
+@@ -1805,74 +1805,76 @@ static blk_status_t __blk_mq_issue_directly(struct blk_mq_hw_ctx *hctx,
+ return ret;
+ }
+
+-blk_status_t blk_mq_try_issue_directly(struct blk_mq_hw_ctx *hctx,
++static blk_status_t __blk_mq_try_issue_directly(struct blk_mq_hw_ctx *hctx,
+ struct request *rq,
+ blk_qc_t *cookie,
+- bool bypass, bool last)
++ bool bypass_insert, bool last)
+ {
+ struct request_queue *q = rq->q;
+ bool run_queue = true;
+- blk_status_t ret = BLK_STS_RESOURCE;
+- int srcu_idx;
+- bool force = false;
+
+- hctx_lock(hctx, &srcu_idx);
+ /*
+- * hctx_lock is needed before checking quiesced flag.
++ * RCU or SRCU read lock is needed before checking quiesced flag.
+ *
+- * When queue is stopped or quiesced, ignore 'bypass', insert
+- * and return BLK_STS_OK to caller, and avoid driver to try to
+- * dispatch again.
++ * When queue is stopped or quiesced, ignore 'bypass_insert' from
++ * blk_mq_request_issue_directly(), and return BLK_STS_OK to caller,
++ * and avoid driver to try to dispatch again.
+ */
+- if (unlikely(blk_mq_hctx_stopped(hctx) || blk_queue_quiesced(q))) {
++ if (blk_mq_hctx_stopped(hctx) || blk_queue_quiesced(q)) {
+ run_queue = false;
+- bypass = false;
+- goto out_unlock;
++ bypass_insert = false;
++ goto insert;
+ }
+
+- if (unlikely(q->elevator && !bypass))
+- goto out_unlock;
++ if (q->elevator && !bypass_insert)
++ goto insert;
+
+ if (!blk_mq_get_dispatch_budget(hctx))
+- goto out_unlock;
++ goto insert;
+
+ if (!blk_mq_get_driver_tag(rq)) {
+ blk_mq_put_dispatch_budget(hctx);
+- goto out_unlock;
++ goto insert;
+ }
+
+- /*
+- * Always add a request that has been through
+- *.queue_rq() to the hardware dispatch list.
+- */
+- force = true;
+- ret = __blk_mq_issue_directly(hctx, rq, cookie, last);
+-out_unlock:
++ return __blk_mq_issue_directly(hctx, rq, cookie, last);
++insert:
++ if (bypass_insert)
++ return BLK_STS_RESOURCE;
++
++ blk_mq_request_bypass_insert(rq, run_queue);
++ return BLK_STS_OK;
++}
++
++static void blk_mq_try_issue_directly(struct blk_mq_hw_ctx *hctx,
++ struct request *rq, blk_qc_t *cookie)
++{
++ blk_status_t ret;
++ int srcu_idx;
++
++ might_sleep_if(hctx->flags & BLK_MQ_F_BLOCKING);
++
++ hctx_lock(hctx, &srcu_idx);
++
++ ret = __blk_mq_try_issue_directly(hctx, rq, cookie, false, true);
++ if (ret == BLK_STS_RESOURCE || ret == BLK_STS_DEV_RESOURCE)
++ blk_mq_request_bypass_insert(rq, true);
++ else if (ret != BLK_STS_OK)
++ blk_mq_end_request(rq, ret);
++
++ hctx_unlock(hctx, srcu_idx);
++}
++
++blk_status_t blk_mq_request_issue_directly(struct request *rq, bool last)
++{
++ blk_status_t ret;
++ int srcu_idx;
++ blk_qc_t unused_cookie;
++ struct blk_mq_hw_ctx *hctx = rq->mq_hctx;
++
++ hctx_lock(hctx, &srcu_idx);
++ ret = __blk_mq_try_issue_directly(hctx, rq, &unused_cookie, true, last);
+ hctx_unlock(hctx, srcu_idx);
+- switch (ret) {
+- case BLK_STS_OK:
+- break;
+- case BLK_STS_DEV_RESOURCE:
+- case BLK_STS_RESOURCE:
+- if (force) {
+- blk_mq_request_bypass_insert(rq, run_queue);
+- /*
+- * We have to return BLK_STS_OK for the DM
+- * to avoid livelock. Otherwise, we return
+- * the real result to indicate whether the
+- * request is direct-issued successfully.
+- */
+- ret = bypass ? BLK_STS_OK : ret;
+- } else if (!bypass) {
+- blk_mq_sched_insert_request(rq, false,
+- run_queue, false);
+- }
+- break;
+- default:
+- if (!bypass)
+- blk_mq_end_request(rq, ret);
+- break;
+- }
+
+ return ret;
+ }
+@@ -1880,20 +1882,22 @@ blk_status_t blk_mq_try_issue_directly(struct blk_mq_hw_ctx *hctx,
+ void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
+ struct list_head *list)
+ {
+- blk_qc_t unused;
+- blk_status_t ret = BLK_STS_OK;
+-
+ while (!list_empty(list)) {
++ blk_status_t ret;
+ struct request *rq = list_first_entry(list, struct request,
+ queuelist);
+
+ list_del_init(&rq->queuelist);
+- if (ret == BLK_STS_OK)
+- ret = blk_mq_try_issue_directly(hctx, rq, &unused,
+- false,
++ ret = blk_mq_request_issue_directly(rq, list_empty(list));
++ if (ret != BLK_STS_OK) {
++ if (ret == BLK_STS_RESOURCE ||
++ ret == BLK_STS_DEV_RESOURCE) {
++ blk_mq_request_bypass_insert(rq,
+ list_empty(list));
+- else
+- blk_mq_sched_insert_request(rq, false, true, false);
++ break;
++ }
++ blk_mq_end_request(rq, ret);
++ }
+ }
+
+ /*
+@@ -1901,7 +1905,7 @@ void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
+ * the driver there was more coming, but that turned out to
+ * be a lie.
+ */
+- if (ret != BLK_STS_OK && hctx->queue->mq_ops->commit_rqs)
++ if (!list_empty(list) && hctx->queue->mq_ops->commit_rqs)
+ hctx->queue->mq_ops->commit_rqs(hctx);
+ }
+
+@@ -2014,13 +2018,13 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
+ if (same_queue_rq) {
+ data.hctx = same_queue_rq->mq_hctx;
+ blk_mq_try_issue_directly(data.hctx, same_queue_rq,
+- &cookie, false, true);
++ &cookie);
+ }
+ } else if ((q->nr_hw_queues > 1 && is_sync) || (!q->elevator &&
+ !data.hctx->dispatch_busy)) {
+ blk_mq_put_ctx(data.ctx);
+ blk_mq_bio_to_request(rq, bio);
+- blk_mq_try_issue_directly(data.hctx, rq, &cookie, false, true);
++ blk_mq_try_issue_directly(data.hctx, rq, &cookie);
+ } else {
+ blk_mq_put_ctx(data.ctx);
+ blk_mq_bio_to_request(rq, bio);
+diff --git a/block/blk-mq.h b/block/blk-mq.h
+index d0b3dd54ef8d..a3a684a8c633 100644
+--- a/block/blk-mq.h
++++ b/block/blk-mq.h
+@@ -67,10 +67,8 @@ void blk_mq_request_bypass_insert(struct request *rq, bool run_queue);
+ void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
+ struct list_head *list);
+
+-blk_status_t blk_mq_try_issue_directly(struct blk_mq_hw_ctx *hctx,
+- struct request *rq,
+- blk_qc_t *cookie,
+- bool bypass, bool last);
++/* Used by blk_insert_cloned_request() to issue request directly */
++blk_status_t blk_mq_request_issue_directly(struct request *rq, bool last);
+ void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
+ struct list_head *list);
+
diff --git a/openpower/linux/0002-Release-OpenPower-kernel.patch b/openpower/linux/0003-Release-OpenPower-kernel.patch
similarity index 75%
rename from openpower/linux/0002-Release-OpenPower-kernel.patch
rename to openpower/linux/0003-Release-OpenPower-kernel.patch
index 13f20f8..1deaa86 100644
--- a/openpower/linux/0002-Release-OpenPower-kernel.patch
+++ b/openpower/linux/0003-Release-OpenPower-kernel.patch
@@ -1,7 +1,7 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Joel Stanley <joel@jms.id.au>
-Date: Wed, 3 Apr 2019 17:17:10 +1030
-Subject: [PATCH 2/2] Release OpenPower kernel
+Date: Mon, 8 Apr 2019 16:42:01 +0930
+Subject: [PATCH 3/3] Release OpenPower kernel
Signed-off-by: Joel Stanley <joel@jms.id.au>
---
@@ -9,13 +9,13 @@
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
-index 3ee390feea61..8c1c16e8fec0 100644
+index af99c77c7066..cd31b792f27c 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@
VERSION = 5
PATCHLEVEL = 0
- SUBLEVEL = 6
+ SUBLEVEL = 7
-EXTRAVERSION =
+EXTRAVERSION = -openpower1
NAME = Shy Crocodile