8:57 a.m.
qemu supports this enlightenment since version 7.10.
From the qemu commit:
The newly introduced enlightenment allow L0 (KVM) and L1 (Hyper-V)
hypervisors to collaborate to avoid unnecessary updates to L2
MSR-Bitmap upon vmexits.
Signed-off-by: Tim Wiederhake <twiederh(a)redhat.com>
---
docs/formatdomain.rst | 2 ++
src/conf/domain_conf.c | 4 ++++
src/conf/domain_conf.h | 1 +
src/conf/schemas/domaincommon.rng | 5 +++++
src/cpu/cpu_x86.c | 4 ++++
src/cpu/cpu_x86_data.h | 1 +
src/qemu/qemu_command.c | 5 +++++
src/qemu/qemu_process.c | 1 +
tests/domaincapsdata/qemu_8.0.0-q35.x86_64.xml | 1 +
tests/domaincapsdata/qemu_8.0.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_8.0.0.x86_64.xml | 1 +
tests/domaincapsdata/qemu_8.1.0-q35.x86_64.xml | 1 +
tests/domaincapsdata/qemu_8.1.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_8.1.0.x86_64.xml | 1 +
tests/domaincapsdata/qemu_8.2.0-q35.x86_64.xml | 1 +
tests/domaincapsdata/qemu_8.2.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_8.2.0.x86_64.xml | 1 +
tests/domaincapsdata/qemu_9.0.0-q35.x86_64.xml | 1 +
tests/domaincapsdata/qemu_9.0.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_9.0.0.x86_64.xml | 1 +
tests/domaincapsdata/qemu_9.1.0-q35.x86_64.xml | 1 +
tests/domaincapsdata/qemu_9.1.0-tcg.x86_64.xml | 1 +
tests/domaincapsdata/qemu_9.1.0.x86_64.xml | 1 +
tests/qemucapabilitiesdata/caps_8.0.0_x86_64.xml | 1 +
tests/qemucapabilitiesdata/caps_8.1.0_x86_64.xml | 1 +
tests/qemucapabilitiesdata/caps_8.2.0_x86_64.xml | 1 +
tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml | 1 +
tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml | 1 +
tests/qemuxmlconfdata/hyperv-off.x86_64-latest.xml | 1 +
tests/qemuxmlconfdata/hyperv-off.xml | 1 +
tests/qemuxmlconfdata/hyperv.x86_64-latest.args | 2 +-
tests/qemuxmlconfdata/hyperv.x86_64-latest.xml | 1 +
tests/qemuxmlconfdata/hyperv.xml | 1 +
33 files changed, 48 insertions(+), 1 deletion(-)
diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst
index e1e219bcb5..0cf3dc9deb 100644
--- a/docs/formatdomain.rst
+++ b/docs/formatdomain.rst
@@ -1989,6 +1989,7 @@ Hypervisors may allow certain CPU / machine features to be toggled
on/off.
<tlbflush state='on'/>
<ipi state='on'/>
<evmcs state='on'/>
+ <emsr_bitmap state='on'/>
</hyperv>
<kvm>
<hidden state='on'/>
@@ -2076,6 +2077,7 @@ are:
ipi Enable PV IPI support
on, off :since:`4.10.0 (QEMU 3.1)`
evmcs Enable Enlightened VMCS
on, off :since:`4.10.0 (QEMU 3.1)`
avic Enable use Hyper-V SynIC with hardware APICv/AVIC
on, off :since:`8.10.0 (QEMU 6.2)`
+ emsr_bitmap Avoid unnecessary updates to L2 MSR Bitmap upon vmexits.
on, off :since:`10.7.0 (QEMU 7.1)`
=============== ======================================================================
============================================
=======================================================
:since:`Since 8.0.0`, the hypervisor can be configured further by setting
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index d950921667..c88e885d07 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -211,6 +211,7 @@ VIR_ENUM_IMPL(virDomainHyperv,
"ipi",
"evmcs",
"avic",
+ "emsr_bitmap",
);
VIR_ENUM_IMPL(virDomainKVM,
@@ -16574,6 +16575,7 @@ virDomainFeaturesHyperVDefParse(virDomainDef *def,
case VIR_DOMAIN_HYPERV_IPI:
case VIR_DOMAIN_HYPERV_EVMCS:
case VIR_DOMAIN_HYPERV_AVIC:
+ case VIR_DOMAIN_HYPERV_EMSR_BITMAP:
break;
case VIR_DOMAIN_HYPERV_STIMER:
@@ -21020,6 +21022,7 @@ virDomainDefFeaturesCheckABIStability(virDomainDef *src,
case VIR_DOMAIN_HYPERV_IPI:
case VIR_DOMAIN_HYPERV_EVMCS:
case VIR_DOMAIN_HYPERV_AVIC:
+ case VIR_DOMAIN_HYPERV_EMSR_BITMAP:
if (src->hyperv_features[i] != dst->hyperv_features[i]) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("State of HyperV enlightenment feature
'%1$s' differs: source: '%2$s', destination: '%3$s'"),
@@ -27761,6 +27764,7 @@ virDomainDefFormatFeatures(virBuffer *buf,
case VIR_DOMAIN_HYPERV_IPI:
case VIR_DOMAIN_HYPERV_EVMCS:
case VIR_DOMAIN_HYPERV_AVIC:
+ case VIR_DOMAIN_HYPERV_EMSR_BITMAP:
virBufferAddLit(&childBuf, "/>\n");
break;
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index eae621f900..332bcd0cf9 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2203,6 +2203,7 @@ typedef enum {
VIR_DOMAIN_HYPERV_IPI,
VIR_DOMAIN_HYPERV_EVMCS,
VIR_DOMAIN_HYPERV_AVIC,
+ VIR_DOMAIN_HYPERV_EMSR_BITMAP,
VIR_DOMAIN_HYPERV_LAST
} virDomainHyperv;
diff --git a/src/conf/schemas/domaincommon.rng b/src/conf/schemas/domaincommon.rng
index 05ba697924..6f81fc94c2 100644
--- a/src/conf/schemas/domaincommon.rng
+++ b/src/conf/schemas/domaincommon.rng
@@ -7962,6 +7962,11 @@
<ref name="featurestate"/>
</element>
</optional>
+ <optional>
+ <element name="emsr_bitmap">
+ <ref name="featurestate"/>
+ </element>
+ </optional>
</interleave>
</group>
</choice>
diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c
index fcbce0ec46..139ac48234 100644
--- a/src/cpu/cpu_x86.c
+++ b/src/cpu/cpu_x86.c
@@ -107,6 +107,9 @@ KVM_FEATURE_DEF(VIR_CPU_x86_HV_IPI,
KVM_FEATURE_DEF(VIR_CPU_x86_HV_EVMCS,
0x40000004, 0x00004000, 0x0);
+KVM_FEATURE_DEF(VIR_CPU_x86_HV_EMSR_BITMAP,
+ 0x4000000A, 0x00080000, 0x0);
+
static virCPUx86Feature x86_kvm_features[] =
{
KVM_FEATURE(VIR_CPU_x86_KVM_PV_UNHALT),
@@ -124,6 +127,7 @@ static virCPUx86Feature x86_kvm_features[] =
KVM_FEATURE(VIR_CPU_x86_HV_IPI),
KVM_FEATURE(VIR_CPU_x86_HV_EVMCS),
KVM_FEATURE(VIR_CPU_x86_HV_STIMER_DIRECT),
+ KVM_FEATURE(VIR_CPU_x86_HV_EMSR_BITMAP),
};
typedef struct _virCPUx86Signature virCPUx86Signature;
diff --git a/src/cpu/cpu_x86_data.h b/src/cpu/cpu_x86_data.h
index d1ca63db6d..414643fe8d 100644
--- a/src/cpu/cpu_x86_data.h
+++ b/src/cpu/cpu_x86_data.h
@@ -62,6 +62,7 @@ struct _virCPUx86MSR {
#define VIR_CPU_x86_HV_IPI "hv-ipi"
#define VIR_CPU_x86_HV_EVMCS "hv-evmcs"
#define VIR_CPU_x86_HV_AVIC "hv-avic"
+#define VIR_CPU_x86_HV_EMSR_BITMAP "hv-emsr_bitmap"
/* Hyper-V Synthetic Timer option */
#define VIR_CPU_x86_HV_STIMER_DIRECT "hv-stimer-direct"
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 28914c9c34..cac6fc57a5 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -6523,6 +6523,11 @@ qemuBuildCpuCommandLine(virCommand *cmd,
def->hyperv_vendor_id);
break;
+ case VIR_DOMAIN_HYPERV_EMSR_BITMAP:
+ if (def->hyperv_features[i] == VIR_TRISTATE_SWITCH_ON)
+ virBufferAsprintf(&buf, ",%s=on",
"hv-emsr-bitmap");
+ break;
+
case VIR_DOMAIN_HYPERV_LAST:
break;
}
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index a69878e8bb..4a2e3b11fd 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -4304,6 +4304,7 @@ qemuProcessVerifyHypervFeatures(virDomainDef *def,
case VIR_DOMAIN_HYPERV_IPI:
case VIR_DOMAIN_HYPERV_EVMCS:
case VIR_DOMAIN_HYPERV_AVIC:
+ case VIR_DOMAIN_HYPERV_EMSR_BITMAP:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("host doesn't support hyperv '%1$s'
feature"),
virDomainHypervTypeToString(i));
diff --git a/tests/domaincapsdata/qemu_8.0.0-q35.x86_64.xml
b/tests/domaincapsdata/qemu_8.0.0-q35.x86_64.xml
index 8eda04948f..1dfbf98248 100644
--- a/tests/domaincapsdata/qemu_8.0.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_8.0.0-q35.x86_64.xml
@@ -285,6 +285,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_8.0.0-tcg.x86_64.xml
b/tests/domaincapsdata/qemu_8.0.0-tcg.x86_64.xml
index c2d537b520..516eade95b 100644
--- a/tests/domaincapsdata/qemu_8.0.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_8.0.0-tcg.x86_64.xml
@@ -287,6 +287,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_8.0.0.x86_64.xml
b/tests/domaincapsdata/qemu_8.0.0.x86_64.xml
index 7167406453..96cfc5776e 100644
--- a/tests/domaincapsdata/qemu_8.0.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_8.0.0.x86_64.xml
@@ -285,6 +285,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_8.1.0-q35.x86_64.xml
b/tests/domaincapsdata/qemu_8.1.0-q35.x86_64.xml
index bac0b06683..5bb1299fb1 100644
--- a/tests/domaincapsdata/qemu_8.1.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_8.1.0-q35.x86_64.xml
@@ -288,6 +288,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_8.1.0-tcg.x86_64.xml
b/tests/domaincapsdata/qemu_8.1.0-tcg.x86_64.xml
index 6c455f7ab9..743a6e728b 100644
--- a/tests/domaincapsdata/qemu_8.1.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_8.1.0-tcg.x86_64.xml
@@ -289,6 +289,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_8.1.0.x86_64.xml
b/tests/domaincapsdata/qemu_8.1.0.x86_64.xml
index f103da3010..fa635fd12b 100644
--- a/tests/domaincapsdata/qemu_8.1.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_8.1.0.x86_64.xml
@@ -288,6 +288,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_8.2.0-q35.x86_64.xml
b/tests/domaincapsdata/qemu_8.2.0-q35.x86_64.xml
index 784c44219c..6c394ba3c4 100644
--- a/tests/domaincapsdata/qemu_8.2.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_8.2.0-q35.x86_64.xml
@@ -290,6 +290,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_8.2.0-tcg.x86_64.xml
b/tests/domaincapsdata/qemu_8.2.0-tcg.x86_64.xml
index 4be710044d..7ebd3ced3a 100644
--- a/tests/domaincapsdata/qemu_8.2.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_8.2.0-tcg.x86_64.xml
@@ -289,6 +289,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_8.2.0.x86_64.xml
b/tests/domaincapsdata/qemu_8.2.0.x86_64.xml
index 2cdf516964..1db706ef7e 100644
--- a/tests/domaincapsdata/qemu_8.2.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_8.2.0.x86_64.xml
@@ -290,6 +290,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_9.0.0-q35.x86_64.xml
b/tests/domaincapsdata/qemu_9.0.0-q35.x86_64.xml
index 670314ba3e..4fb0ebc45f 100644
--- a/tests/domaincapsdata/qemu_9.0.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_9.0.0-q35.x86_64.xml
@@ -290,6 +290,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_9.0.0-tcg.x86_64.xml
b/tests/domaincapsdata/qemu_9.0.0-tcg.x86_64.xml
index 13afe99cdb..43ff5c3d9f 100644
--- a/tests/domaincapsdata/qemu_9.0.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_9.0.0-tcg.x86_64.xml
@@ -291,6 +291,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_9.0.0.x86_64.xml
b/tests/domaincapsdata/qemu_9.0.0.x86_64.xml
index 71c05e0e97..86edbec0dd 100644
--- a/tests/domaincapsdata/qemu_9.0.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_9.0.0.x86_64.xml
@@ -290,6 +290,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_9.1.0-q35.x86_64.xml
b/tests/domaincapsdata/qemu_9.1.0-q35.x86_64.xml
index 5ca6d0fdac..c9bf0139b5 100644
--- a/tests/domaincapsdata/qemu_9.1.0-q35.x86_64.xml
+++ b/tests/domaincapsdata/qemu_9.1.0-q35.x86_64.xml
@@ -294,6 +294,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_9.1.0-tcg.x86_64.xml
b/tests/domaincapsdata/qemu_9.1.0-tcg.x86_64.xml
index 133ee4d723..288047b38b 100644
--- a/tests/domaincapsdata/qemu_9.1.0-tcg.x86_64.xml
+++ b/tests/domaincapsdata/qemu_9.1.0-tcg.x86_64.xml
@@ -290,6 +290,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/domaincapsdata/qemu_9.1.0.x86_64.xml
b/tests/domaincapsdata/qemu_9.1.0.x86_64.xml
index f378000c2b..4cae2f73cc 100644
--- a/tests/domaincapsdata/qemu_9.1.0.x86_64.xml
+++ b/tests/domaincapsdata/qemu_9.1.0.x86_64.xml
@@ -294,6 +294,7 @@
<value>tlbflush</value>
<value>ipi</value>
<value>avic</value>
+ <value>emsr_bitmap</value>
</enum>
</hyperv>
<launchSecurity supported='no'/>
diff --git a/tests/qemucapabilitiesdata/caps_8.0.0_x86_64.xml
b/tests/qemucapabilitiesdata/caps_8.0.0_x86_64.xml
index d3901fef05..2c9c2ebbbb 100644
--- a/tests/qemucapabilitiesdata/caps_8.0.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_8.0.0_x86_64.xml
@@ -3455,5 +3455,6 @@
<cap name='tlbflush'/>
<cap name='ipi'/>
<cap name='avic'/>
+ <cap name='emsr_bitmap'/>
</hypervCapabilities>
</qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_8.1.0_x86_64.xml
b/tests/qemucapabilitiesdata/caps_8.1.0_x86_64.xml
index f8a9993ede..6a87c1d9cc 100644
--- a/tests/qemucapabilitiesdata/caps_8.1.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_8.1.0_x86_64.xml
@@ -3784,5 +3784,6 @@
<cap name='tlbflush'/>
<cap name='ipi'/>
<cap name='avic'/>
+ <cap name='emsr_bitmap'/>
</hypervCapabilities>
</qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_8.2.0_x86_64.xml
b/tests/qemucapabilitiesdata/caps_8.2.0_x86_64.xml
index 43d7105c2d..6713905b2f 100644
--- a/tests/qemucapabilitiesdata/caps_8.2.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_8.2.0_x86_64.xml
@@ -3758,5 +3758,6 @@
<cap name='tlbflush'/>
<cap name='ipi'/>
<cap name='avic'/>
+ <cap name='emsr_bitmap'/>
</hypervCapabilities>
</qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml
b/tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml
index e96af86a92..520a2f95ee 100644
--- a/tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml
@@ -3693,5 +3693,6 @@
<cap name='tlbflush'/>
<cap name='ipi'/>
<cap name='avic'/>
+ <cap name='emsr_bitmap'/>
</hypervCapabilities>
</qemuCaps>
diff --git a/tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml
b/tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml
index c3cb6efc61..f5db55dc86 100644
--- a/tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml
@@ -3949,5 +3949,6 @@
<cap name='tlbflush'/>
<cap name='ipi'/>
<cap name='avic'/>
+ <cap name='emsr_bitmap'/>
</hypervCapabilities>
</qemuCaps>
diff --git a/tests/qemuxmlconfdata/hyperv-off.x86_64-latest.xml
b/tests/qemuxmlconfdata/hyperv-off.x86_64-latest.xml
index 5805fea7b7..2b5f3537a8 100644
--- a/tests/qemuxmlconfdata/hyperv-off.x86_64-latest.xml
+++ b/tests/qemuxmlconfdata/hyperv-off.x86_64-latest.xml
@@ -25,6 +25,7 @@
<tlbflush state='off'/>
<ipi state='off'/>
<evmcs state='off'/>
+ <emsr_bitmap state='off'/>
</hyperv>
</features>
<cpu mode='custom' match='exact' check='none'>
diff --git a/tests/qemuxmlconfdata/hyperv-off.xml b/tests/qemuxmlconfdata/hyperv-off.xml
index 1e7e632b1c..f760a9676b 100644
--- a/tests/qemuxmlconfdata/hyperv-off.xml
+++ b/tests/qemuxmlconfdata/hyperv-off.xml
@@ -25,6 +25,7 @@
<tlbflush state='off'/>
<ipi state='off'/>
<evmcs state='off'/>
+ <emsr_bitmap state='off'/>
</hyperv>
</features>
<clock offset='utc'/>
diff --git a/tests/qemuxmlconfdata/hyperv.x86_64-latest.args
b/tests/qemuxmlconfdata/hyperv.x86_64-latest.args
index 8f0a02230c..5046ec6ea0 100644
--- a/tests/qemuxmlconfdata/hyperv.x86_64-latest.args
+++ b/tests/qemuxmlconfdata/hyperv.x86_64-latest.args
@@ -12,7 +12,7 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
-object
'{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}'
\
-machine pc,usb=off,dump-guest-core=off,memory-backend=pc.ram,acpi=on \
-accel tcg \
--cpu
'qemu64,hv-relaxed=on,hv-vapic=on,hv-spinlocks=0x2fff,hv-vpindex=on,hv-runtime=on,hv-synic=on,hv-stimer=on,hv-reset=on,hv-vendor-id=KVM
Hv,hv-frequencies=on,hv-reenlightenment=on,hv-tlbflush=on,hv-ipi=on,hv-evmcs=on,hv-avic=on'
\
+-cpu
'qemu64,hv-relaxed=on,hv-vapic=on,hv-spinlocks=0x2fff,hv-vpindex=on,hv-runtime=on,hv-synic=on,hv-stimer=on,hv-reset=on,hv-vendor-id=KVM
Hv,hv-frequencies=on,hv-reenlightenment=on,hv-tlbflush=on,hv-ipi=on,hv-evmcs=on,hv-avic=on,hv-emsr-bitmap=on'
\
-m size=219136k \
-object
'{"qom-type":"memory-backend-ram","id":"pc.ram","size":224395264}'
\
-overcommit mem-lock=off \
diff --git a/tests/qemuxmlconfdata/hyperv.x86_64-latest.xml
b/tests/qemuxmlconfdata/hyperv.x86_64-latest.xml
index 4828177263..d5cb27bf1d 100644
--- a/tests/qemuxmlconfdata/hyperv.x86_64-latest.xml
+++ b/tests/qemuxmlconfdata/hyperv.x86_64-latest.xml
@@ -26,6 +26,7 @@
<ipi state='on'/>
<evmcs state='on'/>
<avic state='on'/>
+ <emsr_bitmap state='on'/>
</hyperv>
</features>
<cpu mode='custom' match='exact' check='none'>
diff --git a/tests/qemuxmlconfdata/hyperv.xml b/tests/qemuxmlconfdata/hyperv.xml
index dde091aa9a..db520e2074 100644
--- a/tests/qemuxmlconfdata/hyperv.xml
+++ b/tests/qemuxmlconfdata/hyperv.xml
@@ -26,6 +26,7 @@
<ipi state='on'/>
<evmcs state='on'/>
<avic state='on'/>
+ <emsr_bitmap state='on'/>
</hyperv>
</features>
<clock offset='utc'/>
--
2.43.0