diff --git a/configure b/configure
index 28e1cf6291..8ccfe51673 100755
--- a/configure
+++ b/configure
@@ -501,42 +501,93 @@ EOF
 }
 
 if check_define __linux__ ; then
-  targetos="Linux"
+  targetos=linux
 elif check_define _WIN32 ; then
-  targetos='MINGW32'
+  targetos=windows
 elif check_define __OpenBSD__ ; then
-  targetos='OpenBSD'
+  targetos=openbsd
 elif check_define __sun__ ; then
-  targetos='SunOS'
+  targetos=sunos
 elif check_define __HAIKU__ ; then
-  targetos='Haiku'
+  targetos=haiku
 elif check_define __FreeBSD__ ; then
-  targetos='FreeBSD'
+  targetos=freebsd
 elif check_define __FreeBSD_kernel__ && check_define __GLIBC__; then
-  targetos='GNU/kFreeBSD'
+  targetos=gnu/kfreebsd
 elif check_define __DragonFly__ ; then
-  targetos='DragonFly'
+  targetos=dragonfly
 elif check_define __NetBSD__; then
-  targetos='NetBSD'
+  targetos=netbsd
 elif check_define __APPLE__; then
-  targetos='Darwin'
+  targetos=darwin
 else
   # This is a fatal error, but don't report it yet, because we
   # might be going to just print the --help text, or it might
   # be the result of a missing compiler.
-  targetos='bogus'
+  targetos=bogus
 fi
 
-# Some host OSes need non-standard checks for which CPU to use.
-# Note that these checks are broken for cross-compilation: if you're
-# cross-compiling to one of these OSes then you'll need to specify
-# the correct CPU with the --cpu option.
+# OS specific
+
 case $targetos in
-SunOS)
+windows)
+  mingw32="yes"
+  plugins="no"
+  pie="no"
+;;
+gnu/kfreebsd)
+  bsd="yes"
+;;
+freebsd)
+  bsd="yes"
+  bsd_user="yes"
+  make="${MAKE-gmake}"
+  # needed for kinfo_getvmmap(3) in libutil.h
+;;
+dragonfly)
+  bsd="yes"
+  make="${MAKE-gmake}"
+;;
+netbsd)
+  bsd="yes"
+  make="${MAKE-gmake}"
+;;
+openbsd)
+  bsd="yes"
+  make="${MAKE-gmake}"
+;;
+darwin)
+  bsd="yes"
+  darwin="yes"
+  # Disable attempts to use ObjectiveC features in os/object.h since they
+  # won't work when we're compiling with gcc as a C compiler.
+  QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"
+;;
+sunos)
+  solaris="yes"
+  make="${MAKE-gmake}"
+  smbd="${SMBD-/usr/sfw/sbin/smbd}"
+# needed for CMSG_ macros in sys/socket.h
+  QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"
+# needed for TIOCWIN* defines in termios.h
+  QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"
   # $(uname -m) returns i86pc even on an x86_64 box, so default based on isainfo
+  # Note that this check is broken for cross-compilation: if you're
+  # cross-compiling to one of these OSes then you'll need to specify
+  # the correct CPU with the --cpu option.
   if test -z "$cpu" && test "$(isainfo -k)" = "amd64"; then
     cpu="x86_64"
   fi
+;;
+haiku)
+  pie="no"
+  QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS -D_BSD_SOURCE -fPIC $QEMU_CFLAGS"
+;;
+linux)
+  linux="yes"
+  linux_user="yes"
+  vhost_user=${default_feature:-yes}
+;;
 esac
 
 if test ! -z "$cpu" ; then
@@ -584,96 +635,46 @@ else
   cpu=$(uname -m)
 fi
 
-ARCH=
-# Normalise host CPU name and set ARCH.
+# Normalise host CPU name, set multilib cflags
 # Note that this case should only have supported host CPUs, not guests.
 case "$cpu" in
-  ppc|ppc64|s390x|sparc64|x32|riscv)
-  ;;
-  ppc64le)
-    ARCH="ppc64"
-  ;;
+  armv*b|armv*l|arm)
+    cpu="arm" ;;
+
   i386|i486|i586|i686|i86pc|BePC)
     cpu="i386"
-  ;;
+    CPU_CFLAGS="-m32" ;;
+  x32)
+    cpu="x86_64"
+    CPU_CFLAGS="-mx32" ;;
   x86_64|amd64)
     cpu="x86_64"
-  ;;
-  armv*b|armv*l|arm)
-    cpu="arm"
-  ;;
-  aarch64)
-    cpu="aarch64"
-  ;;
+    # ??? Only extremely old AMD cpus do not have cmpxchg16b.
+    # If we truly care, we should simply detect this case at
+    # runtime and generate the fallback to serial emulation.
+    CPU_CFLAGS="-m64 -mcx16" ;;
+
   mips*)
-    cpu="mips"
-  ;;
+    cpu="mips" ;;
+
+  ppc)
+    CPU_CFLAGS="-m32" ;;
+  ppc64)
+    CPU_CFLAGS="-m64 -mbig" ;;
+  ppc64le)
+    cpu="ppc64"
+    CPU_CFLAGS="-m64 -mlittle" ;;
+
+  s390)
+    CPU_CFLAGS="-m31" ;;
+  s390x)
+    CPU_CFLAGS="-m64" ;;
+
   sparc|sun4[cdmuv])
     cpu="sparc"
-  ;;
-  *)
-    # This will result in either an error or falling back to TCI later
-    ARCH=unknown
-  ;;
-esac
-if test -z "$ARCH"; then
-  ARCH="$cpu"
-fi
-
-# OS specific
-
-case $targetos in
-MINGW32*)
-  mingw32="yes"
-  plugins="no"
-  pie="no"
-;;
-GNU/kFreeBSD)
-  bsd="yes"
-;;
-FreeBSD)
-  bsd="yes"
-  bsd_user="yes"
-  make="${MAKE-gmake}"
-  # needed for kinfo_getvmmap(3) in libutil.h
-;;
-DragonFly)
-  bsd="yes"
-  make="${MAKE-gmake}"
-;;
-NetBSD)
-  bsd="yes"
-  make="${MAKE-gmake}"
-;;
-OpenBSD)
-  bsd="yes"
-  make="${MAKE-gmake}"
-;;
-Darwin)
-  bsd="yes"
-  darwin="yes"
-  # Disable attempts to use ObjectiveC features in os/object.h since they
-  # won't work when we're compiling with gcc as a C compiler.
-  QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"
-;;
-SunOS)
-  solaris="yes"
-  make="${MAKE-gmake}"
-  smbd="${SMBD-/usr/sfw/sbin/smbd}"
-# needed for CMSG_ macros in sys/socket.h
-  QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"
-# needed for TIOCWIN* defines in termios.h
-  QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"
-;;
-Haiku)
-  pie="no"
-  QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS -D_BSD_SOURCE -fPIC $QEMU_CFLAGS"
-;;
-Linux)
-  linux="yes"
-  linux_user="yes"
-  vhost_user=${default_feature:-yes}
-;;
+    CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc" ;;
+  sparc64)
+    CPU_CFLAGS="-m64 -mcpu=ultrasparc" ;;
 esac
 
 : ${make=${MAKE-make}}
@@ -1257,24 +1258,6 @@ local_statedir="${local_statedir:-$prefix/var}"
 firmwarepath="${firmwarepath:-$datadir/qemu-firmware}"
 localedir="${localedir:-$datadir/locale}"
 
-case "$cpu" in
-    ppc) CPU_CFLAGS="-m32" ;;
-    ppc64) CPU_CFLAGS="-m64" ;;
-    sparc) CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc" ;;
-    sparc64) CPU_CFLAGS="-m64 -mcpu=ultrasparc" ;;
-    s390) CPU_CFLAGS="-m31" ;;
-    s390x) CPU_CFLAGS="-m64" ;;
-    i386) CPU_CFLAGS="-m32" ;;
-    x32) CPU_CFLAGS="-mx32" ;;
-
-    # ??? Only extremely old AMD cpus do not have cmpxchg16b.
-    # If we truly care, we should simply detect this case at
-    # runtime and generate the fallback to serial emulation.
-    x86_64) CPU_CFLAGS="-m64 -mcx16" ;;
-
-    # No special flags required for other host CPUs
-esac
-
 if eval test -z "\${cross_cc_$cpu}"; then
     eval "cross_cc_${cpu}=\$cc"
     cross_cc_vars="$cross_cc_vars cross_cc_${cpu}"
@@ -3334,8 +3317,8 @@ QEMU_GA_MSI_MINGW_DLL_PATH="$($pkg_config --variable=prefix glib-2.0)/bin"
 # Mac OS X ships with a broken assembler
 roms=
 if { test "$cpu" = "i386" || test "$cpu" = "x86_64"; } && \
-        test "$targetos" != "Darwin" && test "$targetos" != "SunOS" && \
-        test "$targetos" != "Haiku" && test "$softmmu" = yes ; then
+        test "$targetos" != "darwin" && test "$targetos" != "sunos" && \
+        test "$targetos" != "haiku" && test "$softmmu" = yes ; then
     # Different host OS linkers have different ideas about the name of the ELF
     # emulation. Linux and OpenBSD/amd64 use 'elf_i386'; FreeBSD uses the _fbsd
     # variant; OpenBSD/i386 uses the _obsd variant; and Windows uses i386pe.
@@ -3412,8 +3395,6 @@ echo "GIT=$git" >> $config_host_mak
 echo "GIT_SUBMODULES=$git_submodules" >> $config_host_mak
 echo "GIT_SUBMODULES_ACTION=$git_submodules_action" >> $config_host_mak
 
-echo "ARCH=$ARCH" >> $config_host_mak
-
 if test "$debug_tcg" = "yes" ; then
   echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak
 fi
@@ -3726,10 +3707,10 @@ fi
 if test "$linux" = "yes" ; then
   mkdir -p linux-headers
   case "$cpu" in
-  i386|x86_64|x32)
+  i386|x86_64)
     linux_arch=x86
     ;;
-  ppc|ppc64|ppc64le)
+  ppc|ppc64)
     linux_arch=powerpc
     ;;
   s390x)
@@ -3781,7 +3762,6 @@ if test "$safe_stack" = "yes"; then
 fi
 
 # If we're using a separate build tree, set it up now.
-# DIRS are directories which we simply mkdir in the build tree;
 # LINKS are things to symlink back into the source tree
 # (these can be both files and directories).
 # Caution: do not add files or directories here using wildcards. This
@@ -3793,12 +3773,6 @@ fi
 # UNLINK is used to remove symlinks from older development versions
 # that might get into the way when doing "git update" without doing
 # a "make distclean" in between.
-DIRS="tests tests/tcg tests/qapi-schema tests/qtest/libqos"
-DIRS="$DIRS tests/qtest tests/qemu-iotests tests/vm tests/fp tests/qgraph"
-DIRS="$DIRS docs docs/interop fsdev scsi"
-DIRS="$DIRS pc-bios/optionrom pc-bios/s390-ccw"
-DIRS="$DIRS roms/seabios"
-DIRS="$DIRS contrib/plugins/"
 LINKS="Makefile"
 LINKS="$LINKS tests/tcg/Makefile.target"
 LINKS="$LINKS pc-bios/optionrom/Makefile"
@@ -3820,16 +3794,15 @@ for bios_file in \
     $source_path/pc-bios/*.img \
     $source_path/pc-bios/openbios-* \
     $source_path/pc-bios/u-boot.* \
-    $source_path/pc-bios/edk2-*.fd.bz2 \
     $source_path/pc-bios/palcode-* \
     $source_path/pc-bios/qemu_vga.ndrv
 
 do
     LINKS="$LINKS pc-bios/$(basename $bios_file)"
 done
-mkdir -p $DIRS
 for f in $LINKS ; do
     if [ -e "$source_path/$f" ]; then
+        mkdir -p `dirname ./$f`
         symlink "$source_path/$f" "$f"
     fi
 done
@@ -3903,27 +3876,13 @@ if test "$skip_meson" = no; then
   if test "$cross_compile" = "yes"; then
     cross_arg="--cross-file config-meson.cross"
     echo "[host_machine]" >> $cross
-    if test "$mingw32" = "yes" ; then
-        echo "system = 'windows'" >> $cross
-    fi
-    if test "$linux" = "yes" ; then
-        echo "system = 'linux'" >> $cross
-    fi
-    if test "$darwin" = "yes" ; then
-        echo "system = 'darwin'" >> $cross
-    fi
-    case "$ARCH" in
+    echo "system = '$targetos'" >> $cross
+    case "$cpu" in
         i386)
             echo "cpu_family = 'x86'" >> $cross
             ;;
-        x86_64|x32)
-            echo "cpu_family = 'x86_64'" >> $cross
-            ;;
-        ppc64le)
-            echo "cpu_family = 'ppc64'" >> $cross
-            ;;
         *)
-            echo "cpu_family = '$ARCH'" >> $cross
+            echo "cpu_family = '$cpu'" >> $cross
             ;;
     esac
     echo "cpu = '$cpu'" >> $cross
diff --git a/cpu.c b/cpu.c
index 9bce67ef55..945dd3dded 100644
--- a/cpu.c
+++ b/cpu.c
@@ -137,12 +137,10 @@ void cpu_exec_realizefn(CPUState *cpu, Error **errp)
     if (!accel_cpu_realizefn(cpu, errp)) {
         return;
     }
-#ifdef CONFIG_TCG
     /* NB: errp parameter is unused currently */
     if (tcg_enabled()) {
         tcg_exec_realizefn(cpu, errp);
     }
-#endif /* CONFIG_TCG */
 
 #ifdef CONFIG_USER_ONLY
     assert(qdev_get_vmsd(DEVICE(cpu)) == NULL ||
@@ -169,12 +167,9 @@ void cpu_exec_unrealizefn(CPUState *cpu)
         vmstate_unregister(NULL, &vmstate_cpu_common, cpu);
     }
 #endif
-#ifdef CONFIG_TCG
-    /* NB: errp parameter is unused currently */
     if (tcg_enabled()) {
         tcg_exec_unrealizefn(cpu);
     }
-#endif /* CONFIG_TCG */
 
     cpu_list_remove(cpu);
 }
diff --git a/docs/meson.build b/docs/meson.build
index 27c6e156ff..57b28a3146 100644
--- a/docs/meson.build
+++ b/docs/meson.build
@@ -18,12 +18,12 @@ if sphinx_build.found()
   # This is a bit awkward but works: create a trivial document and
   # try to run it with our configuration file (which enforces a
   # version requirement). This will fail if sphinx-build is too old.
-  run_command('mkdir', ['-p', tmpdir / 'sphinx'])
-  run_command('touch', [tmpdir / 'sphinx/index.rst'])
+  run_command('mkdir', ['-p', tmpdir / 'sphinx'], check: true)
+  run_command('touch', [tmpdir / 'sphinx/index.rst'], check: true)
   sphinx_build_test_out = run_command(SPHINX_ARGS + [
     '-c', meson.current_source_dir(),
     '-b', 'html', tmpdir / 'sphinx',
-    tmpdir / 'sphinx/out'])
+    tmpdir / 'sphinx/out'], check: false)
   build_docs = (sphinx_build_test_out.returncode() == 0)
 
   if not build_docs
diff --git a/hw/i386/vmmouse.c b/hw/i386/vmmouse.c
index 3d66368286..a56c185f15 100644
--- a/hw/i386/vmmouse.c
+++ b/hw/i386/vmmouse.c
@@ -286,6 +286,10 @@ static void vmmouse_realizefn(DeviceState *dev, Error **errp)
 
     DPRINTF("vmmouse_init\n");
 
+    if (!s->i8042) {
+        error_setg(errp, "'i8042' link is not set");
+        return;
+    }
     if (!object_resolve_path_type("", TYPE_VMPORT, NULL)) {
         error_setg(errp, "vmmouse needs a machine with vmport");
         return;
diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c
index 4ff51221d4..8f35784100 100644
--- a/hw/scsi/megasas.c
+++ b/hw/scsi/megasas.c
@@ -303,6 +303,7 @@ static int megasas_map_sgl(MegasasState *s, MegasasCmd *cmd, union mfi_sgl *sgl)
     }
     if (cmd->iov_size > iov_size) {
         trace_megasas_iovec_overflow(cmd->index, iov_size, cmd->iov_size);
+        goto unmap;
     } else if (cmd->iov_size < iov_size) {
         trace_megasas_iovec_underflow(cmd->index, iov_size, cmd->iov_size);
     }
diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h
index 3c8e24292b..bb37239efa 100644
--- a/include/exec/cpu-all.h
+++ b/include/exec/cpu-all.h
@@ -437,12 +437,10 @@ void dump_opcount_info(GString *buf);
 
 #endif /* !CONFIG_USER_ONLY */
 
-#ifdef CONFIG_TCG
 /* accel/tcg/cpu-exec.c */
 int cpu_exec(CPUState *cpu);
 void tcg_exec_realizefn(CPUState *cpu, Error **errp);
 void tcg_exec_unrealizefn(CPUState *cpu);
-#endif /* CONFIG_TCG */
 
 /* Returns: 0 on success, -1 on error */
 int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr,
diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h
index a567a5ed86..2ef80af6dc 100644
--- a/include/hw/scsi/scsi.h
+++ b/include/hw/scsi/scsi.h
@@ -158,7 +158,7 @@ struct SCSIBus {
  * provided by the caller. It is the caller's responsibility to make
  * sure that name does not clash with the name of any other bus in the
  * system. Unless you need the new bus to have a specific name, you
- * should use scsi_bus_new() instead.
+ * should use scsi_bus_init() instead.
  */
 void scsi_bus_init_named(SCSIBus *bus, size_t bus_size, DeviceState *host,
                          const SCSIBusInfo *info, const char *bus_name);
diff --git a/meson.build b/meson.build
index ae67ca28ab..2495360fd0 100644
--- a/meson.build
+++ b/meson.build
@@ -67,6 +67,14 @@ endif
 
 targetos = host_machine.system()
 
+if cpu not in supported_cpus
+  host_arch = 'unknown'
+elif cpu == 'x86'
+  host_arch = 'i386'
+else
+  host_arch = cpu
+endif
+
 if cpu in ['x86', 'x86_64']
   kvm_targets = ['i386-softmmu', 'x86_64-softmmu']
 elif cpu == 'aarch64'
@@ -335,9 +343,9 @@ if targetos == 'netbsd'
   endif
 endif
 
-tcg_arch = config_host['ARCH']
+tcg_arch = host_arch
 if not get_option('tcg').disabled()
-  if cpu not in supported_cpus
+  if host_arch == 'unknown'
     if get_option('tcg_interpreter')
       warning('Unsupported CPU @0@, will use TCG with TCI (slow)'.format(cpu))
     else
@@ -353,11 +361,11 @@ if not get_option('tcg').disabled()
   endif
   if get_option('tcg_interpreter')
     tcg_arch = 'tci'
-  elif config_host['ARCH'] == 'sparc64'
+  elif host_arch == 'sparc64'
     tcg_arch = 'sparc'
-  elif config_host['ARCH'] in ['x86_64', 'x32']
+  elif host_arch == 'x86_64'
     tcg_arch = 'i386'
-  elif config_host['ARCH'] == 'ppc64'
+  elif host_arch == 'ppc64'
     tcg_arch = 'ppc'
   endif
   add_project_arguments('-iquote', meson.current_source_dir() / 'tcg' / tcg_arch,
@@ -1426,6 +1434,8 @@ config_host_data.set_quoted('CONFIG_QEMU_LOCALSTATEDIR', get_option('prefix') /
 config_host_data.set_quoted('CONFIG_QEMU_MODDIR', get_option('prefix') / qemu_moddir)
 config_host_data.set_quoted('CONFIG_SYSCONFDIR', get_option('prefix') / get_option('sysconfdir'))
 
+config_host_data.set('HOST_' + host_arch.to_upper(), 1)
+
 config_host_data.set('CONFIG_ATTR', libattr.found())
 config_host_data.set('CONFIG_BRLAPI', brlapi.found())
 config_host_data.set('CONFIG_COCOA', cocoa.found())
@@ -1775,8 +1785,6 @@ foreach k, v: config_host
       v = '"' + '", "'.join(v.split()) + '", '
     endif
     config_host_data.set(k, v)
-  elif k == 'ARCH'
-    config_host_data.set('HOST_' + v.to_upper(), 1)
   elif strings.contains(k)
     config_host_data.set_quoted(k, v)
   elif k.startswith('CONFIG_')
@@ -1806,7 +1814,6 @@ disassemblers = {
   'hppa' : ['CONFIG_HPPA_DIS'],
   'i386' : ['CONFIG_I386_DIS'],
   'x86_64' : ['CONFIG_I386_DIS'],
-  'x32' : ['CONFIG_I386_DIS'],
   'm68k' : ['CONFIG_M68K_DIS'],
   'microblaze' : ['CONFIG_MICROBLAZE_DIS'],
   'mips' : ['CONFIG_MIPS_DIS'],
@@ -1920,7 +1927,7 @@ foreach target : target_dirs
   endif
 
   foreach k, v: disassemblers
-    if config_host['ARCH'].startswith(k) or config_target['TARGET_BASE_ARCH'].startswith(k)
+    if host_arch.startswith(k) or config_target['TARGET_BASE_ARCH'].startswith(k)
       foreach sym: v
         config_target += { sym: 'y' }
         config_all_disas += { sym: 'y' }
@@ -2851,7 +2858,7 @@ emulators = {}
 foreach target : target_dirs
   config_target = config_target_mak[target]
   target_name = config_target['TARGET_NAME']
-  arch = config_target['TARGET_BASE_ARCH']
+  target_base_arch = config_target['TARGET_BASE_ARCH']
   arch_srcs = [config_target_h[target]]
   arch_deps = []
   c_args = ['-DNEED_CPU_H',
@@ -2867,11 +2874,11 @@ foreach target : target_dirs
   if target.endswith('-softmmu')
     qemu_target_name = 'qemu-system-' + target_name
     target_type='system'
-    t = target_softmmu_arch[arch].apply(config_target, strict: false)
+    t = target_softmmu_arch[target_base_arch].apply(config_target, strict: false)
     arch_srcs += t.sources()
     arch_deps += t.dependencies()
 
-    hw_dir = target_name == 'sparc64' ? 'sparc64' : arch
+    hw_dir = target_name == 'sparc64' ? 'sparc64' : target_base_arch
     hw = hw_arch[hw_dir].apply(config_target, strict: false)
     arch_srcs += hw.sources()
     arch_deps += hw.dependencies()
@@ -2882,14 +2889,14 @@ foreach target : target_dirs
     abi = config_target['TARGET_ABI_DIR']
     target_type='user'
     qemu_target_name = 'qemu-' + target_name
-    if arch in target_user_arch
-      t = target_user_arch[arch].apply(config_target, strict: false)
+    if target_base_arch in target_user_arch
+      t = target_user_arch[target_base_arch].apply(config_target, strict: false)
       arch_srcs += t.sources()
       arch_deps += t.dependencies()
     endif
     if 'CONFIG_LINUX_USER' in config_target
       base_dir = 'linux-user'
-      target_inc += include_directories('linux-user/host/' / config_host['ARCH'])
+      target_inc += include_directories('linux-user/host/' / host_arch)
     endif
     if 'CONFIG_BSD_USER' in config_target
       base_dir = 'bsd-user'
@@ -2921,7 +2928,7 @@ foreach target : target_dirs
     arch_srcs += gdbstub_xml
   endif
 
-  t = target_arch[arch].apply(config_target, strict: false)
+  t = target_arch[target_base_arch].apply(config_target, strict: false)
   arch_srcs += t.sources()
   arch_deps += t.dependencies()
 
diff --git a/pc-bios/meson.build b/pc-bios/meson.build
index b40ff3f2bd..1812a4084f 100644
--- a/pc-bios/meson.build
+++ b/pc-bios/meson.build
@@ -15,7 +15,7 @@ if unpack_edk2_blobs
     roms += custom_target(f,
                   build_by_default: have_system,
                   output: f,
-                  input: '@0@.bz2'.format(f),
+                  input: files('@0@.bz2'.format(f)),
                   capture: true,
                   install: get_option('install_blobs'),
                   install_dir: qemu_datadir,
diff --git a/tests/qtest/fuzz-megasas-test.c b/tests/qtest/fuzz-megasas-test.c
index 940a76bf25..e1141c58a4 100644
--- a/tests/qtest/fuzz-megasas-test.c
+++ b/tests/qtest/fuzz-megasas-test.c
@@ -34,6 +34,34 @@ static void test_lp1878263_megasas_zero_iov_cnt(void)
     qtest_quit(s);
 }
 
+/*
+ * Overflow SGL buffer.
+ * https://gitlab.com/qemu-project/qemu/-/issues/521
+ */
+static void test_gitlab_issue521_megasas_sgl_ovf(void)
+{
+    QTestState *s = qtest_init("-display none -m 32M -machine q35 "
+                               "-nodefaults -device megasas "
+                               "-device scsi-cd,drive=null0 "
+                               "-blockdev "
+                               "driver=null-co,read-zeroes=on,node-name=null0");
+    qtest_outl(s, 0xcf8, 0x80000818);
+    qtest_outl(s, 0xcfc, 0xc000);
+    qtest_outl(s, 0xcf8, 0x80000804);
+    qtest_outw(s, 0xcfc, 0x05);
+    qtest_bufwrite(s, 0x0, "\x01", 0x1);
+    qtest_bufwrite(s, 0x7, "\x01", 0x1);
+    qtest_bufwrite(s, 0x10, "\x02", 0x1);
+    qtest_bufwrite(s, 0x16, "\x01", 0x1);
+    qtest_bufwrite(s, 0x28, "\x01", 0x1);
+    qtest_bufwrite(s, 0x33, "\x01", 0x1);
+    qtest_outb(s, 0xc040, 0x0);
+    qtest_outb(s, 0xc040, 0x20);
+    qtest_outl(s, 0xc040, 0x20000000);
+    qtest_outb(s, 0xc040, 0x20);
+    qtest_quit(s);
+}
+
 int main(int argc, char **argv)
 {
     const char *arch = qtest_get_arch();
@@ -43,6 +71,8 @@ int main(int argc, char **argv)
     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
         qtest_add_func("fuzz/test_lp1878263_megasas_zero_iov_cnt",
                        test_lp1878263_megasas_zero_iov_cnt);
+        qtest_add_func("fuzz/gitlab_issue521_megasas_sgl_ovf",
+                       test_gitlab_issue521_megasas_sgl_ovf);
     }
 
     return g_test_run();
diff --git a/tests/tcg/configure.sh b/tests/tcg/configure.sh
index 9b76f58258..9ef913df5b 100755
--- a/tests/tcg/configure.sh
+++ b/tests/tcg/configure.sh
@@ -64,7 +64,9 @@ fi
 : ${cross_cc_ppc="powerpc-linux-gnu-gcc"}
 : ${cross_cc_cflags_ppc="-m32"}
 : ${cross_cc_ppc64="powerpc64-linux-gnu-gcc"}
-: ${cross_cc_ppc64le="powerpc64le-linux-gnu-gcc"}
+: ${cross_cc_cflags_ppc64="-m64 -mbig"}
+: ${cross_cc_ppc64le="$cross_cc_ppc64"}
+: ${cross_cc_cflags_ppc64le="-m64 -mlittle"}
 : ${cross_cc_riscv64="riscv64-linux-gnu-gcc"}
 : ${cross_cc_s390x="s390x-linux-gnu-gcc"}
 : ${cross_cc_sh4="sh4-linux-gnu-gcc"}
diff --git a/tests/unit/meson.build b/tests/unit/meson.build
index acac3622ed..90acf5b0da 100644
--- a/tests/unit/meson.build
+++ b/tests/unit/meson.build
@@ -112,7 +112,7 @@ if have_block
   if nettle.found() or gcrypt.found()
     tests += {'test-crypto-pbkdf': [io]}
   endif
-  if 'CONFIG_EPOLL_CREATE1' in config_host
+  if config_host_data.get('CONFIG_EPOLL_CREATE1')
     tests += {'test-fdmon-epoll': [testblock]}
   endif
 endif