diff --git a/poky/meta/lib/buildstats.py b/poky/meta/lib/buildstats.py
index 8627ed3..c52b6c3 100644
--- a/poky/meta/lib/buildstats.py
+++ b/poky/meta/lib/buildstats.py
@@ -43,8 +43,8 @@
         # depends on the heartbeat event, which fires less often.
         self.min_seconds = 1
 
-        self.meminfo_regex = re.compile(b'^(MemTotal|MemFree|Buffers|Cached|SwapTotal|SwapFree):\s*(\d+)')
-        self.diskstats_regex = re.compile(b'^([hsv]d.|mtdblock\d|mmcblk\d|cciss/c\d+d\d+.*)$')
+        self.meminfo_regex = re.compile(rb'^(MemTotal|MemFree|Buffers|Cached|SwapTotal|SwapFree):\s*(\d+)')
+        self.diskstats_regex = re.compile(rb'^([hsv]d.|mtdblock\d|mmcblk\d|cciss/c\d+d\d+.*)$')
         self.diskstats_ltime = None
         self.diskstats_data = None
         self.stat_ltimes = None
diff --git a/poky/meta/lib/oe/spdx.py b/poky/meta/lib/oe/spdx.py
index 9814fbf..4416194 100644
--- a/poky/meta/lib/oe/spdx.py
+++ b/poky/meta/lib/oe/spdx.py
@@ -2,6 +2,18 @@
 # SPDX-License-Identifier: GPL-2.0-only
 #
 
+#
+# This library is intended to capture the JSON SPDX specification in a type
+# safe manner. It is not intended to encode any particular OE specific
+# behaviors, see the sbom.py for that.
+#
+# The documented SPDX spec document doesn't cover the JSON syntax for
+# particular configuration, which can make it hard to determine what the JSON
+# syntax should be. I've found it is actually much simpler to read the official
+# SPDX JSON schema which can be found here: https://github.com/spdx/spdx-spec
+# in schemas/spdx-schema.json
+#
+
 import hashlib
 import itertools
 import json
@@ -9,7 +21,16 @@
 SPDX_VERSION = "2.2"
 
 
+#
+# The following are the support classes that are used to implement SPDX object
+#
+
 class _Property(object):
+    """
+    A generic SPDX object property. The different types will derive from this
+    class
+    """
+
     def __init__(self, *, default=None):
         self.default = default
 
@@ -19,6 +40,10 @@
 
 
 class _String(_Property):
+    """
+    A scalar string property for an SPDX object
+    """
+
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
 
@@ -39,6 +64,10 @@
 
 
 class _Object(_Property):
+    """
+    A scalar SPDX object property of a SPDX object
+    """
+
     def __init__(self, cls, **kwargs):
         super().__init__(**kwargs)
         self.cls = cls
@@ -62,6 +91,10 @@
 
 
 class _ListProperty(_Property):
+    """
+    A list of SPDX properties
+    """
+
     def __init__(self, prop, **kwargs):
         super().__init__(**kwargs)
         self.prop = prop
@@ -82,16 +115,28 @@
 
 
 class _StringList(_ListProperty):
+    """
+    A list of strings as a property for an SPDX object
+    """
+
     def __init__(self, **kwargs):
         super().__init__(_String(), **kwargs)
 
 
 class _ObjectList(_ListProperty):
+    """
+    A list of SPDX objects as a property for an SPDX object
+    """
+
     def __init__(self, cls, **kwargs):
         super().__init__(_Object(cls), **kwargs)
 
 
 class MetaSPDXObject(type):
+    """
+    A metaclass that allows properties (anything derived from a _Property
+    class) to be defined for a SPDX object
+    """
     def __new__(mcls, name, bases, attrs):
         attrs["_properties"] = {}
 
@@ -105,6 +150,9 @@
 
 
 class SPDXObject(metaclass=MetaSPDXObject):
+    """
+    The base SPDX object; all SPDX spec classes must derive from this class
+    """
     def __init__(self, **d):
         self._spdx = {}
 
@@ -122,6 +170,21 @@
             return
         raise KeyError("%r is not a valid SPDX property" % name)
 
+#
+# These are the SPDX objects implemented from the spec. The *only* properties
+# that can be added to these objects are ones directly specified in the SPDX
+# spec, however you may add helper functions to make operations easier.
+#
+# Defaults should *only* be specified if the SPDX spec says there is a certain
+# required value for a field (e.g. dataLicense), or if the field is mandatory
+# and has some sane "this field is unknown" (e.g. "NOASSERTION")
+#
+
+class SPDXAnnotation(SPDXObject):
+    annotationDate = _String()
+    annotationType = _String()
+    annotator = _String()
+    comment = _String()
 
 class SPDXChecksum(SPDXObject):
     algorithm = _String()
@@ -164,6 +227,7 @@
     packageVerificationCode = _Object(SPDXPackageVerificationCode)
     hasFiles = _StringList()
     packageFileName = _String()
+    annotations = _ObjectList(SPDXAnnotation)
 
 
 class SPDXFile(SPDXObject):
diff --git a/poky/meta/lib/oe/sstatesig.py b/poky/meta/lib/oe/sstatesig.py
index dd6b9de..0c3b458 100644
--- a/poky/meta/lib/oe/sstatesig.py
+++ b/poky/meta/lib/oe/sstatesig.py
@@ -108,7 +108,6 @@
         self.unlockedrecipes = (data.getVar("SIGGEN_UNLOCKED_RECIPES") or
                                 "").split()
         self.unlockedrecipes = { k: "" for k in self.unlockedrecipes }
-        self.buildarch = data.getVar('BUILD_ARCH')
         self._internal = False
         pass
 
@@ -147,13 +146,6 @@
         self.dump_lockedsigs(sigfile)
         return super(bb.siggen.SignatureGeneratorBasicHash, self).dump_sigs(dataCache, options)
 
-    def prep_taskhash(self, tid, deps, dataCaches):
-        super().prep_taskhash(tid, deps, dataCaches)
-        if hasattr(self, "extramethod"):
-            (mc, _, _, fn) = bb.runqueue.split_tid_mcfn(tid)
-            inherits = " ".join(dataCaches[mc].inherits[fn])
-            if inherits.find("/native.bbclass") != -1 or inherits.find("/cross.bbclass") != -1:
-                self.extramethod[tid] = ":" + self.buildarch
 
     def get_taskhash(self, tid, deps, dataCaches):
         if tid in self.lockedhashes:
@@ -478,6 +470,8 @@
     import stat
     import pwd
     import grp
+    import re
+    import fnmatch
 
     def update_hash(s):
         s = s.encode('utf-8')
@@ -487,6 +481,8 @@
 
     h = hashlib.sha256()
     prev_dir = os.getcwd()
+    corebase = d.getVar("COREBASE")
+    tmpdir = d.getVar("TMPDIR")
     include_owners = os.environ.get('PSEUDO_DISABLED') == '0'
     if "package_write_" in task or task == "package_qa":
         include_owners = False
@@ -497,8 +493,17 @@
         include_root = False
     extra_content = d.getVar('HASHEQUIV_HASH_VERSION')
 
+    filemaps = {}
+    for m in (d.getVar('SSTATE_HASHEQUIV_FILEMAP') or '').split():
+        entry = m.split(":")
+        if len(entry) != 3 or entry[0] != task:
+            continue
+        filemaps.setdefault(entry[1], [])
+        filemaps[entry[1]].append(entry[2])
+
     try:
         os.chdir(path)
+        basepath = os.path.normpath(path)
 
         update_hash("OEOuthashBasic\n")
         if extra_content:
@@ -580,8 +585,13 @@
                 else:
                     update_hash(" " * 9)
 
+                filterfile = False
+                for entry in filemaps:
+                    if fnmatch.fnmatch(path, entry):
+                        filterfile = True
+
                 update_hash(" ")
-                if stat.S_ISREG(s.st_mode):
+                if stat.S_ISREG(s.st_mode) and not filterfile:
                     update_hash("%10d" % s.st_size)
                 else:
                     update_hash(" " * 10)
@@ -590,9 +600,24 @@
                 fh = hashlib.sha256()
                 if stat.S_ISREG(s.st_mode):
                     # Hash file contents
-                    with open(path, 'rb') as d:
-                        for chunk in iter(lambda: d.read(4096), b""):
+                    if filterfile:
+                        # Need to ignore paths in crossscripts and postinst-useradd files.
+                        with open(path, 'rb') as d:
+                            chunk = d.read()
+                            chunk = chunk.replace(bytes(basepath, encoding='utf8'), b'')
+                            for entry in filemaps:
+                                if not fnmatch.fnmatch(path, entry):
+                                    continue
+                                for r in filemaps[entry]:
+                                    if r.startswith("regex-"):
+                                        chunk = re.sub(bytes(r[6:], encoding='utf8'), b'', chunk)
+                                    else:
+                                        chunk = chunk.replace(bytes(r, encoding='utf8'), b'')
                             fh.update(chunk)
+                    else:
+                        with open(path, 'rb') as d:
+                            for chunk in iter(lambda: d.read(4096), b""):
+                                fh.update(chunk)
                     update_hash(fh.hexdigest())
                 else:
                     update_hash(" " * len(fh.hexdigest()))
diff --git a/poky/meta/lib/oeqa/selftest/cases/bbtests.py b/poky/meta/lib/oeqa/selftest/cases/bbtests.py
index 8831de6..6562364 100644
--- a/poky/meta/lib/oeqa/selftest/cases/bbtests.py
+++ b/poky/meta/lib/oeqa/selftest/cases/bbtests.py
@@ -83,8 +83,10 @@
 
     def test_force_task_1(self):
         # test 1 from bug 5875
+        import uuid
         test_recipe = 'zlib'
-        test_data = "Microsoft Made No Profit From Anyone's Zunes Yo"
+        # Need to use uuid otherwise hash equivlance would change the workflow
+        test_data = "Microsoft Made No Profit From Anyone's Zunes Yo %s" % uuid.uuid1()
         bb_vars = get_bb_vars(['D', 'PKGDEST', 'mandir'], test_recipe)
         image_dir = bb_vars['D']
         pkgsplit_dir = bb_vars['PKGDEST']
diff --git a/poky/meta/lib/oeqa/selftest/cases/gotoolchain.py b/poky/meta/lib/oeqa/selftest/cases/gotoolchain.py
index 4fc3605..c809d7c 100644
--- a/poky/meta/lib/oeqa/selftest/cases/gotoolchain.py
+++ b/poky/meta/lib/oeqa/selftest/cases/gotoolchain.py
@@ -43,6 +43,12 @@
 
     @classmethod
     def tearDownClass(cls):
+        # Go creates file which are readonly
+        for dirpath, dirnames, filenames in os.walk(cls.tmpdir_SDKQA):
+            for filename in filenames + dirnames:
+                f = os.path.join(dirpath, filename)
+                if not os.path.islink(f):
+                    os.chmod(f, 0o775)
         shutil.rmtree(cls.tmpdir_SDKQA, ignore_errors=True)
         super(oeGoToolchainSelfTest, cls).tearDownClass()
 
diff --git a/poky/meta/lib/oeqa/selftest/cases/tinfoil.py b/poky/meta/lib/oeqa/selftest/cases/tinfoil.py
index 5109280..8fd48bb 100644
--- a/poky/meta/lib/oeqa/selftest/cases/tinfoil.py
+++ b/poky/meta/lib/oeqa/selftest/cases/tinfoil.py
@@ -94,14 +94,13 @@
                 pass
 
             pattern = 'conf'
-            res = tinfoil.run_command('findFilesMatchingInDir', pattern, 'conf/machine')
+            res = tinfoil.run_command('testCookerCommandEvent', pattern)
             self.assertTrue(res)
 
             eventreceived = False
             commandcomplete = False
             start = time.time()
             # Wait for maximum 60s in total so we'd detect spurious heartbeat events for example
-            # The test is IO load sensitive too
             while (not (eventreceived == True and commandcomplete == True) 
                     and (time.time() - start < 60)):
                 # if we received both events (on let's say a good day), we are done  
@@ -111,7 +110,8 @@
                         commandcomplete = True
                     elif isinstance(event, bb.event.FilesMatchingFound):
                         self.assertEqual(pattern, event._pattern)
-                        self.assertIn('qemuarm.conf', event._matches)
+                        self.assertIn('A', event._matches)
+                        self.assertIn('B', event._matches)
                         eventreceived = True
                     elif isinstance(event, logging.LogRecord):
                         continue
diff --git a/poky/meta/lib/oeqa/selftest/cases/wic.py b/poky/meta/lib/oeqa/selftest/cases/wic.py
index dc7b9e6..5fc8e65 100644
--- a/poky/meta/lib/oeqa/selftest/cases/wic.py
+++ b/poky/meta/lib/oeqa/selftest/cases/wic.py
@@ -1158,6 +1158,35 @@
             out = glob(self.resultdir + "%s-*.direct" % wksname)
             self.assertEqual(1, len(out))
 
+    @only_for_arch(['i586', 'i686', 'x86_64'])
+    def test_efi_plugin_unified_kernel_image_qemu(self):
+        """Test efi plugin's Unified Kernel Image feature in qemu"""
+        config = 'IMAGE_FSTYPES = "wic"\n'\
+                 'INITRAMFS_IMAGE = "core-image-minimal-initramfs"\n'\
+                 'WKS_FILE = "test_efi_plugin.wks"\n'\
+                 'MACHINE_FEATURES:append = " efi"\n'
+        self.append_config(config)
+        self.assertEqual(0, bitbake('core-image-minimal core-image-minimal-initramfs ovmf').status)
+        self.remove_config(config)
+
+        with runqemu('core-image-minimal', ssh=False,
+                     runqemuparams='ovmf', image_fstype='wic') as qemu:
+            # Check that /boot has EFI bootx64.efi (required for EFI)
+            cmd = "ls /boot/EFI/BOOT/bootx64.efi | wc -l"
+            status, output = qemu.run_serial(cmd)
+            self.assertEqual(1, status, 'Failed to run command "%s": %s' % (cmd, output))
+            self.assertEqual(output, '1')
+            # Check that /boot has EFI/Linux/linux.efi (required for Unified Kernel Images auto detection)
+            cmd = "ls /boot/EFI/Linux/linux.efi | wc -l"
+            status, output = qemu.run_serial(cmd)
+            self.assertEqual(1, status, 'Failed to run command "%s": %s' % (cmd, output))
+            self.assertEqual(output, '1')
+            # Check that /boot doesn't have loader/entries/boot.conf (Unified Kernel Images are auto detected by the bootloader)
+            cmd = "ls /boot/loader/entries/boot.conf 2&>/dev/null | wc -l"
+            status, output = qemu.run_serial(cmd)
+            self.assertEqual(1, status, 'Failed to run command "%s": %s' % (cmd, output))
+            self.assertEqual(output, '0')
+
     def test_fs_types(self):
         """Test filesystem types for empty and not empty partitions"""
         img = 'core-image-minimal'
diff --git a/poky/meta/lib/oeqa/utils/buildproject.py b/poky/meta/lib/oeqa/utils/buildproject.py
index e6d80cc..dfb9661 100644
--- a/poky/meta/lib/oeqa/utils/buildproject.py
+++ b/poky/meta/lib/oeqa/utils/buildproject.py
@@ -18,6 +18,7 @@
     def __init__(self, uri, foldername=None, tmpdir=None, dl_dir=None):
         self.uri = uri
         self.archive = os.path.basename(uri)
+        self.tempdirobj = None
         if not tmpdir:
             self.tempdirobj = tempfile.TemporaryDirectory(prefix='buildproject-')
             tmpdir = self.tempdirobj.name
@@ -57,6 +58,8 @@
         return self._run('cd %s; make install %s' % (self.targetdir, install_args))
 
     def clean(self):
+        if self.tempdirobj:
+            self.tempdirobj.cleanup()
         if not self.needclean:
              return
         self._run('rm -rf %s' % self.targetdir)
diff --git a/poky/meta/lib/oeqa/utils/qemurunner.py b/poky/meta/lib/oeqa/utils/qemurunner.py
index d55248c..d961a9a 100644
--- a/poky/meta/lib/oeqa/utils/qemurunner.py
+++ b/poky/meta/lib/oeqa/utils/qemurunner.py
@@ -265,7 +265,7 @@
             r = os.fdopen(r)
             x = r.read()
             os.killpg(os.getpgid(self.runqemu.pid), signal.SIGTERM)
-            sys.exit(0)
+            os._exit(0)
 
         self.logger.debug("runqemu started, pid is %s" % self.runqemu.pid)
         self.logger.debug("waiting at most %s seconds for qemu pid (%s)" %
diff --git a/poky/meta/lib/oeqa/utils/targetbuild.py b/poky/meta/lib/oeqa/utils/targetbuild.py
index 1055810..09738ad 100644
--- a/poky/meta/lib/oeqa/utils/targetbuild.py
+++ b/poky/meta/lib/oeqa/utils/targetbuild.py
@@ -19,6 +19,7 @@
         self.d = d
         self.uri = uri
         self.archive = os.path.basename(uri)
+        self.tempdirobj = None
         if not tmpdir:
             tmpdir = self.d.getVar('WORKDIR')
             if not tmpdir:
@@ -71,9 +72,10 @@
         return self._run('cd %s; make install %s' % (self.targetdir, install_args))
 
     def clean(self):
+        if self.tempdirobj:
+            self.tempdirobj.cleanup()
         self._run('rm -rf %s' % self.targetdir)
         subprocess.check_call('rm -f %s' % self.localarchive, shell=True)
-        pass
 
 class TargetBuildProject(BuildProject):