Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* socket option parsing fix (Daniel)
* SCSI fixes (Fam)
* Readline double-free fix (Greg)
* More HVF attribution fixes (Izik)
* WHPX (Windows Hypervisor Platform Extensions) support (Justin)
* POLLHUP handler (Klim)
* ivshmem fixes (Ladi)
* memfd memory backend (Marc-André)
* improved error message (Marcelo)
* Memory fixes (Peter Xu, Zhecheng)
* Remove obsolete code and comments (Peter M.)
* qdev API improvements (Philippe)
* Add CONFIG_I2C switch (Thomas)

# gpg: Signature made Wed 07 Feb 2018 15:24:08 GMT
# gpg:                using RSA key BFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (47 commits)
  Add the WHPX acceleration enlightenments
  Introduce the WHPX impl
  Add the WHPX vcpu API
  Add the Windows Hypervisor Platform accelerator.
  tests/test-filter-redirector: move close()
  tests: use memfd in vhost-user-test
  vhost-user-test: make read-guest-mem setup its own qemu
  tests: keep compiling failing vhost-user tests
  Add memfd based hostmem
  memfd: add hugetlbsize argument
  memfd: add hugetlb support
  memfd: add error argument, instead of perror()
  cpus: join thread when removing a vCPU
  cpus: hvf: unregister thread with RCU
  cpus: tcg: unregister thread with RCU, fix exiting of loop on unplug
  cpus: dummy: unregister thread with RCU, exit loop on unplug
  cpus: kvm: unregister thread with RCU
  cpus: hax: register/unregister thread with RCU, exit loop on unplug
  ivshmem: Disable irqfd on device reset
  ivshmem: Improve MSI irqfd error handling
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

# Conflicts:
#	cpus.c

1 files changed, 107 insertions, 6 deletions

diff --git a/configure b/configure
index 886abe6a39..831ebf248f 100755
--- a/configure
+++ b/configure
@@ -222,6 +222,17 @@ supported_hvf_target() {
     return 1
 }
 
+supported_whpx_target() {
+    test "$whpx" = "yes" || return 1
+    glob "$1" "*-softmmu" || return 1
+    case "${1%-softmmu}" in
+        i386|x86_64)
+            return 0
+        ;;
+    esac
+    return 1
+}
+
 supported_target() {
     case "$1" in
         *-softmmu)
@@ -248,6 +259,7 @@ supported_target() {
     supported_xen_target "$1" && return 0
     supported_hax_target "$1" && return 0
     supported_hvf_target "$1" && return 0
+    supported_whpx_target "$1" && return 0
     print_error "TCG disabled, but hardware accelerator not available for '$target'"
     return 1
 }
@@ -338,10 +350,12 @@ vhost_user=""
 kvm="no"
 hax="no"
 hvf="no"
+whpx="no"
 rdma=""
 gprof="no"
 debug_tcg="no"
 debug="no"
+sanitizers="no"
 fortify_source=""
 strip_opt="yes"
 tcg_interpreter="no"
@@ -636,8 +650,6 @@ elif check_define _ARCH_PPC ; then
   fi
 elif check_define __mips__ ; then
   cpu="mips"
-elif check_define __ia64__ ; then
-  cpu="ia64"
 elif check_define __s390__ ; then
   if check_define __s390x__ ; then
     cpu="s390x"
@@ -995,6 +1007,10 @@ for opt do
       strip_opt="no"
       fortify_source="no"
   ;;
+  --enable-sanitizers) sanitizers="yes"
+  ;;
+  --disable-sanitizers) sanitizers="no"
+  ;;
   --enable-sparse) sparse="yes"
   ;;
   --disable-sparse) sparse="no"
@@ -1055,6 +1071,10 @@ for opt do
   ;;
   --enable-hvf) hvf="yes"
   ;;
+  --disable-whpx) whpx="no"
+  ;;
+  --enable-whpx) whpx="yes"
+  ;;
   --disable-tcg-interpreter) tcg_interpreter="no"
   ;;
   --enable-tcg-interpreter) tcg_interpreter="yes"
@@ -1476,6 +1496,7 @@ Advanced options (experts only):
   --firmwarepath=PATH      search PATH for firmware files
   --with-confsuffix=SUFFIX suffix for QEMU data inside datadir/libdir/sysconfdir [$confsuffix]
   --enable-debug           enable common debug build options
+  --enable-sanitizers      enable default sanitizers
   --disable-strip          disable stripping binaries
   --disable-werror         disable compilation abort on warning
   --disable-stack-protector disable compiler-provided stack protection
@@ -1553,6 +1574,7 @@ disabled with --disable-FEATURE, default is enabled if available:
   kvm             KVM acceleration support
   hax             HAX acceleration support
   hvf             Hypervisor.framework acceleration support
+  whpx            Windows Hypervisor Platform acceleration support
   rdma            RDMA-based migration support
   vde             support for vde network
   netmap          support for netmap network
@@ -2451,6 +2473,30 @@ if test "$xen_pv_domain_build" = "yes" &&
 fi
 
 ##########################################
+# Windows Hypervisor Platform accelerator (WHPX) check
+if test "$whpx" != "no" ; then
+    cat > $TMPC << EOF
+#include <windows.h>
+#include <winhvplatform.h>
+#include <winhvemulation.h>
+int main(void) {
+    WHV_CAPABILITY whpx_cap;
+    WHvGetCapability(WHvCapabilityCodeFeatures, &whpx_cap, sizeof(whpx_cap));
+    return 0;
+}
+EOF
+    if compile_prog "" "-lwinhvplatform -lwinhvemulation" ; then
+        libs_softmmu="$libs_softmmu -lwinhvplatform -lwinhvemulation"
+        whpx="yes"
+    else
+        if test "$whpx" = "yes"; then
+            feature_not_found "winhvplatform" "winhvemulation is not installed"
+        fi
+        whpx="no"
+    fi
+fi
+
+##########################################
 # Sparse probe
 if test "$sparse" != "no" ; then
   if has cgcc; then
@@ -4743,9 +4789,6 @@ if test "$coroutine_pool" = ""; then
 fi
 
 if test "$debug_stack_usage" = "yes"; then
-  if test "$cpu" = "ia64" -o "$cpu" = "hppa"; then
-    error_exit "stack usage debugging is not supported for $cpu"
-  fi
   if test "$coroutine_pool" = "yes"; then
     echo "WARN: disabling coroutine pool for stack usage debugging"
     coroutine_pool=no
@@ -5205,9 +5248,45 @@ if compile_prog "" "" ; then
 fi
 
 ##########################################
+# checks for sanitizers
+
+write_c_skeleton
+
+have_asan=no
+have_ubsan=no
+have_asan_iface_h=no
+have_asan_iface_fiber=no
+
+if test "$sanitizers" = "yes" ; then
+  if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" ""; then
+      have_asan=yes
+  fi
+  if compile_prog "$CPU_CFLAGS -Werror -fsanitize=undefined" ""; then
+      have_ubsan=yes
+  fi
+
+  if check_include "sanitizer/asan_interface.h" ; then
+      have_asan_iface_h=yes
+  fi
+
+  cat > $TMPC << EOF
+#include <sanitizer/asan_interface.h>
+int main(void) {
+  __sanitizer_start_switch_fiber(0, 0, 0);
+  return 0;
+}
+EOF
+  if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" "" ; then
+      have_asan_iface_fiber=yes
+  fi
+fi
+
+##########################################
 # End of CC checks
 # After here, no more $cc or $ld runs
 
+write_c_skeleton
+
 if test "$gcov" = "yes" ; then
   CFLAGS="-fprofile-arcs -ftest-coverage -g $CFLAGS"
   LDFLAGS="-fprofile-arcs -ftest-coverage $LDFLAGS"
@@ -5228,6 +5307,20 @@ else
     CFLAGS="-O2 $CFLAGS"
 fi
 
+if test "$have_asan" = "yes"; then
+  CFLAGS="-fsanitize=address $CFLAGS"
+  if test "$have_asan_iface_h" = "no" ; then
+      echo "ASAN build enabled, but ASAN header missing." \
+           "Without code annotation, the report may be inferior."
+  elif test "$have_asan_iface_fiber" = "no" ; then
+      echo "ASAN build enabled, but ASAN header is too old." \
+           "Without code annotation, the report may be inferior."
+  fi
+fi
+if test "$have_ubsan" = "yes"; then
+  CFLAGS="-fsanitize=undefined $CFLAGS"
+fi
+
 ##########################################
 # Do we have libnfs
 if test "$libnfs" != "no" ; then
@@ -5596,6 +5689,7 @@ echo "Install blobs     $blobs"
 echo "KVM support       $kvm"
 echo "HAX support       $hax"
 echo "HVF support       $hvf"
+echo "WHPX support      $whpx"
 echo "TCG support       $tcg"
 if test "$tcg" = "yes" ; then
     echo "TCG debug enabled $debug_tcg"
@@ -5763,7 +5857,7 @@ if test "$mingw32" = "yes" ; then
     echo "CONFIG_QGA_NTDDDISK=y" >> $config_host_mak
   fi
   if test "$guest_agent_msi" = "yes"; then
-    echo "QEMU_GA_MSI_ENABLED=yes" >> $config_host_mak  
+    echo "QEMU_GA_MSI_ENABLED=yes" >> $config_host_mak
     echo "QEMU_GA_MSI_MINGW_DLL_PATH=${QEMU_GA_MSI_MINGW_DLL_PATH}" >> $config_host_mak
     echo "QEMU_GA_MSI_WITH_VSS=${QEMU_GA_MSI_WITH_VSS}" >> $config_host_mak
     echo "QEMU_GA_MSI_ARCH=${QEMU_GA_MSI_ARCH}" >> $config_host_mak
@@ -6211,6 +6305,10 @@ if test "$valgrind_h" = "yes" ; then
   echo "CONFIG_VALGRIND_H=y" >> $config_host_mak
 fi
 
+if test "$have_asan_iface_fiber" = "yes" ; then
+    echo "CONFIG_ASAN_IFACE_FIBER=y" >> $config_host_mak
+fi
+
 if test "$has_environ" = "yes" ; then
   echo "CONFIG_HAS_ENVIRON=y" >> $config_host_mak
 fi
@@ -6692,6 +6790,9 @@ fi
 if supported_hvf_target $target; then
     echo "CONFIG_HVF=y" >> $config_target_mak
 fi
+if supported_whpx_target $target; then
+    echo "CONFIG_WHPX=y" >> $config_target_mak
+fi
 if test "$target_bigendian" = "yes" ; then
   echo "TARGET_WORDS_BIGENDIAN=y" >> $config_target_mak
 fi