Introduce a Meson feature option and default-config entry to allow
building QEMU with MSHV (Microsoft Hypervisor) acceleration support.
This is the first step toward implementing an MSHV backend in QEMU.
Signed-off-by: Magnus Kulke <magnusku...@linux.microsoft.com>
---
accel/Kconfig | 3 +++
meson.build | 16 ++++++++++++++++
meson_options.txt | 2 ++
scripts/meson-buildoptions.sh | 3 +++
4 files changed, 24 insertions(+)
diff --git a/accel/Kconfig b/accel/Kconfig
index 4263cab722..a60f114923 100644
--- a/accel/Kconfig
+++ b/accel/Kconfig
@@ -13,6 +13,9 @@ config TCG
config KVM
bool
+config MSHV
+ bool
+
config XEN
bool
select FSDEV_9P if VIRTFS
diff --git a/meson.build b/meson.build
index e819a7084c..a4269b816b 100644
--- a/meson.build
+++ b/meson.build
@@ -322,6 +322,13 @@ else
endif
accelerator_targets += { 'CONFIG_XEN': xen_targets }
+if cpu == 'x86_64'
+ mshv_targets = ['x86_64-softmmu']
+else
+ mshv_targets = []
+endif
+accelerator_targets += { 'CONFIG_MSHV': mshv_targets }
+
if cpu == 'aarch64'
accelerator_targets += {
'CONFIG_HVF': ['aarch64-softmmu']
@@ -877,6 +884,14 @@ accelerators = []
if get_option('kvm').allowed() and host_os == 'linux'
accelerators += 'CONFIG_KVM'
endif
+
+if get_option('mshv').allowed() and host_os == 'linux'
+ if get_option('mshv').enabled() and host_machine.cpu() != 'x86_64'
+ error('mshv accelerator requires x64_64 host')
+ endif
+ accelerators += 'CONFIG_MSHV'
+endif
+
if get_option('whpx').allowed() and host_os == 'windows'
if get_option('whpx').enabled() and host_machine.cpu() != 'x86_64'
error('WHPX requires 64-bit host')
@@ -4747,6 +4762,7 @@ if have_system
summary_info += {'HVF support': config_all_accel.has_key('CONFIG_HVF')}
summary_info += {'WHPX support':
config_all_accel.has_key('CONFIG_WHPX')}
summary_info += {'NVMM support':
config_all_accel.has_key('CONFIG_NVMM')}
+ summary_info += {'MSHV support':
config_all_accel.has_key('CONFIG_MSHV')}
summary_info += {'Xen support': xen.found()}
if xen.found()
summary_info += {'xen ctrl version': xen.version()}
diff --git a/meson_options.txt b/meson_options.txt
index cc66b46c63..e5671884b8 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -71,6 +71,8 @@ option('malloc', type : 'combo', choices : ['system',
'tcmalloc', 'jemalloc'],
option('kvm', type: 'feature', value: 'auto',
description: 'KVM acceleration support')
+option('mshv', type: 'feature', value: 'auto',
+ description: 'MSHV acceleration support')
option('whpx', type: 'feature', value: 'auto',
description: 'WHPX acceleration support')
option('hvf', type: 'feature', value: 'auto',
diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh
index 8a67a14e2e..cfd767a425 100644
--- a/scripts/meson-buildoptions.sh
+++ b/scripts/meson-buildoptions.sh
@@ -155,6 +155,7 @@ meson_options_help() {
printf "%s\n" ' membarrier membarrier system call (for Linux 4.14+ or
Windows'
printf "%s\n" ' modules modules support (non Windows)'
printf "%s\n" ' mpath Multipath persistent reservation
passthrough'
+ printf "%s\n" ' mshv MSHV acceleration support'
printf "%s\n" ' multiprocess Out of process device emulation support'
printf "%s\n" ' netmap netmap network backend support'
printf "%s\n" ' nettle nettle cryptography support'
@@ -410,6 +411,8 @@ _meson_option_parse() {
--disable-modules) printf "%s" -Dmodules=disabled ;;
--enable-mpath) printf "%s" -Dmpath=enabled ;;
--disable-mpath) printf "%s" -Dmpath=disabled ;;
+ --enable-mshv) printf "%s" -Dmshv=enabled ;;
+ --disable-mshv) printf "%s" -Dmshv=disabled ;;
--enable-multiprocess) printf "%s" -Dmultiprocess=enabled ;;
--disable-multiprocess) printf "%s" -Dmultiprocess=disabled ;;
--enable-netmap) printf "%s" -Dnetmap=enabled ;;
--
2.34.1
