[libvirt] [PATCH 2/3] conf: qemu: add support for Hyper-V reenlightenment notifications
Vitaly Kuznetsov
vkuznets at redhat.com
Thu Aug 9 13:14:20 UTC 2018
Qemu-3.0 supports so-called 'Reenlightenment' notifications and this (in
conjunction with 'hv-frequencies') can be used make Hyper-V on KVM pass
stable TSC page clocksource to L2 guests.
Signed-off-by: Vitaly Kuznetsov <vkuznets at redhat.com>
---
docs/formatdomain.html.in | 7 +++++++
docs/schemas/domaincommon.rng | 5 +++++
src/conf/domain_conf.c | 6 +++++-
src/conf/domain_conf.h | 1 +
src/cpu/cpu_x86.c | 3 +++
src/cpu/cpu_x86_data.h | 1 +
src/qemu/qemu_command.c | 1 +
src/qemu/qemu_parse_command.c | 1 +
src/qemu/qemu_process.c | 1 +
tests/qemuxml2argvdata/hyperv-off.xml | 1 +
tests/qemuxml2argvdata/hyperv.args | 3 ++-
tests/qemuxml2argvdata/hyperv.xml | 1 +
tests/qemuxml2xmloutdata/hyperv-off.xml | 1 +
tests/qemuxml2xmloutdata/hyperv.xml | 1 +
14 files changed, 31 insertions(+), 2 deletions(-)
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 4ec2b73244..de0993696e 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -1938,6 +1938,7 @@
<reset state='on'/>
<vendor_id state='on' value='KVM Hv'/>
<frequencies state='on'/>
+ <reenlightenment state='on'/>
</hyperv>
<kvm>
<hidden state='on'/>
@@ -2066,6 +2067,12 @@
<td> on, off</td>
<td><span class="since">4.7.0 (QEMU 2.12)</span></td>
</tr>
+ <tr>
+ <td>reenlightenment</td>
+ <td>Enable re-enlightenment notification on migration</td>
+ <td> on, off</td>
+ <td><span class="since">4.7.0 (QEMU 3.0)</span></td>
+ </tr>
</table>
</dd>
<dt><code>pvspinlock</code></dt>
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index fc013ff2a4..b2a1ebfa3f 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -5721,6 +5721,11 @@
<ref name="featurestate"/>
</element>
</optional>
+ <optional>
+ <element name="reenlightenment">
+ <ref name="featurestate"/>
+ </element>
+ </optional>
</interleave>
</element>
</define>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 17a9bc8286..e2154b5bf7 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -170,7 +170,8 @@ VIR_ENUM_IMPL(virDomainHyperv, VIR_DOMAIN_HYPERV_LAST,
"stimer",
"reset",
"vendor_id",
- "frequencies")
+ "frequencies",
+ "reenlightenment")
VIR_ENUM_IMPL(virDomainKVM, VIR_DOMAIN_KVM_LAST,
"hidden")
@@ -20019,6 +20020,7 @@ virDomainDefParseXML(xmlDocPtr xml,
case VIR_DOMAIN_HYPERV_STIMER:
case VIR_DOMAIN_HYPERV_RESET:
case VIR_DOMAIN_HYPERV_FREQUENCIES:
+ case VIR_DOMAIN_HYPERV_REENLIGHTENMENT:
break;
case VIR_DOMAIN_HYPERV_SPINLOCKS:
@@ -22204,6 +22206,7 @@ virDomainDefFeaturesCheckABIStability(virDomainDefPtr src,
case VIR_DOMAIN_HYPERV_STIMER:
case VIR_DOMAIN_HYPERV_RESET:
case VIR_DOMAIN_HYPERV_FREQUENCIES:
+ case VIR_DOMAIN_HYPERV_REENLIGHTENMENT:
if (src->hyperv_features[i] != dst->hyperv_features[i]) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("State of HyperV enlightenment "
@@ -27855,6 +27858,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
case VIR_DOMAIN_HYPERV_STIMER:
case VIR_DOMAIN_HYPERV_RESET:
case VIR_DOMAIN_HYPERV_FREQUENCIES:
+ case VIR_DOMAIN_HYPERV_REENLIGHTENMENT:
break;
case VIR_DOMAIN_HYPERV_SPINLOCKS:
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 8b15b7e192..8fa5002985 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1792,6 +1792,7 @@ typedef enum {
VIR_DOMAIN_HYPERV_RESET,
VIR_DOMAIN_HYPERV_VENDOR_ID,
VIR_DOMAIN_HYPERV_FREQUENCIES,
+ VIR_DOMAIN_HYPERV_REENLIGHTENMENT,
VIR_DOMAIN_HYPERV_LAST
} virDomainHyperv;
diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c
index a2fbfb577d..7a48b78eb9 100644
--- a/src/cpu/cpu_x86.c
+++ b/src/cpu/cpu_x86.c
@@ -111,6 +111,8 @@ KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_RESET,
0x40000003, 0x00000080);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_FREQUENCIES,
0x40000003, 0x00000800);
+KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_REENLIGHTENMENT,
+ 0x40000003, 0x00002000);
static virCPUx86Feature x86_kvm_features[] =
{
@@ -132,6 +134,7 @@ static virCPUx86Feature x86_kvm_features[] =
KVM_FEATURE(VIR_CPU_x86_KVM_HV_VPINDEX),
KVM_FEATURE(VIR_CPU_x86_KVM_HV_RESET),
KVM_FEATURE(VIR_CPU_x86_KVM_HV_FREQUENCIES),
+ KVM_FEATURE(VIR_CPU_x86_KVM_HV_REENLIGHTENMENT),
};
typedef struct _virCPUx86Model virCPUx86Model;
diff --git a/src/cpu/cpu_x86_data.h b/src/cpu/cpu_x86_data.h
index c01eb41be5..a810c64fc9 100644
--- a/src/cpu/cpu_x86_data.h
+++ b/src/cpu/cpu_x86_data.h
@@ -64,6 +64,7 @@ struct _virCPUx86CPUID {
# define VIR_CPU_x86_KVM_HV_VPINDEX "__kvm_hv_vpindex"
# define VIR_CPU_x86_KVM_HV_RESET "__kvm_hv_reset"
# define VIR_CPU_x86_KVM_HV_FREQUENCIES "__kvm_hv_frequencies"
+# define VIR_CPU_x86_KVM_HV_REENLIGHTENMENT "__kvm_hv_reenlightenment"
# define VIR_CPU_X86_DATA_INIT { 0 }
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 2b84d379c8..17d4c0a359 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -6921,6 +6921,7 @@ qemuBuildCpuCommandLine(virCommandPtr cmd,
case VIR_DOMAIN_HYPERV_STIMER:
case VIR_DOMAIN_HYPERV_RESET:
case VIR_DOMAIN_HYPERV_FREQUENCIES:
+ case VIR_DOMAIN_HYPERV_REENLIGHTENMENT:
if (def->hyperv_features[i] == VIR_TRISTATE_SWITCH_ON)
virBufferAsprintf(&buf, ",hv_%s",
virDomainHypervTypeToString(i));
diff --git a/src/qemu/qemu_parse_command.c b/src/qemu/qemu_parse_command.c
index ffea9a26bd..1e67a5a8c8 100644
--- a/src/qemu/qemu_parse_command.c
+++ b/src/qemu/qemu_parse_command.c
@@ -1537,6 +1537,7 @@ qemuParseCommandLineCPU(virDomainDefPtr dom,
case VIR_DOMAIN_HYPERV_STIMER:
case VIR_DOMAIN_HYPERV_RESET:
case VIR_DOMAIN_HYPERV_FREQUENCIES:
+ case VIR_DOMAIN_HYPERV_REENLIGHTENMENT:
if (value) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("HyperV feature '%s' should not "
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 1276d57f35..e97628dd4a 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -3913,6 +3913,7 @@ qemuProcessVerifyHypervFeatures(virDomainDefPtr def,
case VIR_DOMAIN_HYPERV_STIMER:
case VIR_DOMAIN_HYPERV_RESET:
case VIR_DOMAIN_HYPERV_FREQUENCIES:
+ case VIR_DOMAIN_HYPERV_REENLIGHTENMENT:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("host doesn't support hyperv '%s' feature"),
virDomainHypervTypeToString(i));
diff --git a/tests/qemuxml2argvdata/hyperv-off.xml b/tests/qemuxml2argvdata/hyperv-off.xml
index d3a8455ac3..b2e3612df9 100644
--- a/tests/qemuxml2argvdata/hyperv-off.xml
+++ b/tests/qemuxml2argvdata/hyperv-off.xml
@@ -21,6 +21,7 @@
<reset state='off'/>
<vendor_id state='off'/>
<frequencies state='off'/>
+ <reenlightenment state='off'/>
</hyperv>
</features>
<clock offset='utc'/>
diff --git a/tests/qemuxml2argvdata/hyperv.args b/tests/qemuxml2argvdata/hyperv.args
index 53026bb2d5..4feafad8e2 100644
--- a/tests/qemuxml2argvdata/hyperv.args
+++ b/tests/qemuxml2argvdata/hyperv.args
@@ -9,7 +9,8 @@ QEMU_AUDIO_DRV=none \
-S \
-machine pc,accel=tcg,usb=off,dump-guest-core=off \
-cpu 'qemu32,hv_relaxed,hv_vapic,hv_spinlocks=0x2fff,hv_vpindex,hv_runtime,\
-hv_synic,hv_stimer,hv_reset,hv_vendor_id=KVM Hv,hv_frequencies' \
+hv_synic,hv_stimer,hv_reset,hv_vendor_id=KVM Hv,hv_frequencies,\
+hv_reenlightenment' \
-m 214 \
-smp 6,sockets=6,cores=1,threads=1 \
-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
diff --git a/tests/qemuxml2argvdata/hyperv.xml b/tests/qemuxml2argvdata/hyperv.xml
index 27372d1636..20fcdba59e 100644
--- a/tests/qemuxml2argvdata/hyperv.xml
+++ b/tests/qemuxml2argvdata/hyperv.xml
@@ -21,6 +21,7 @@
<reset state='on'/>
<vendor_id state='on' value='KVM Hv'/>
<frequencies state='on'/>
+ <reenlightenment state='on'/>
</hyperv>
</features>
<clock offset='utc'/>
diff --git a/tests/qemuxml2xmloutdata/hyperv-off.xml b/tests/qemuxml2xmloutdata/hyperv-off.xml
index 3ba0b827c3..4a41e0c37e 100644
--- a/tests/qemuxml2xmloutdata/hyperv-off.xml
+++ b/tests/qemuxml2xmloutdata/hyperv-off.xml
@@ -21,6 +21,7 @@
<reset state='off'/>
<vendor_id state='off'/>
<frequencies state='off'/>
+ <reenlightenment state='off'/>
</hyperv>
</features>
<clock offset='utc'/>
diff --git a/tests/qemuxml2xmloutdata/hyperv.xml b/tests/qemuxml2xmloutdata/hyperv.xml
index 1e47a946d6..183b45980b 100644
--- a/tests/qemuxml2xmloutdata/hyperv.xml
+++ b/tests/qemuxml2xmloutdata/hyperv.xml
@@ -21,6 +21,7 @@
<reset state='on'/>
<vendor_id state='on' value='KVM Hv'/>
<frequencies state='on'/>
+ <reenlightenment state='on'/>
</hyperv>
</features>
<clock offset='utc'/>
--
2.14.4
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