5:13 a.m.
Changes since v1:
- Rebase
- Add Ján's R-b tags.
- Hardcode 'direct' as the only stimer feature to avoid over-engineering
[Ján Tomko]
- Split 'conf' patch into three [Ján Tomko]
- Minor fixes [Ján Tomko]
QEMU-4.1 will bring us Direct Mode for Hyper-V Synthetic timers support,
we need to support it in libvirt too. As this is not a new enlightenment
but rather an enhancement of an existing one ('stimer'), support it in
<stimer state='on'>
<direct state='on'/>
</stimer>
form. Backwards compatibility is (hopefully) preserved.
Vitaly Kuznetsov (8):
docs: formatdomain: add stimer flag to the example xml
docs: formatdomain: fix 'SynIC' spelling
docs: formatdomain: move 'msrs' out of Hyper-V Enlightenments
cpu_x86: add Edx to KVM_FEATURE_DEF()
conf: change the way how Hyper-V features are printed out
conf: add support for Direct Mode for Hyper-V Synthetic timers
qemu: add support for Direct Mode for Hyper-V Synthetic timers
news: mention Direct Mode for Hyper-V Synthetic timers support
docs/formatdomain.html.in | 13 +++--
docs/news.xml | 9 ++++
docs/schemas/domaincommon.rng | 16 +++++-
src/conf/domain_conf.c | 77 ++++++++++++++++++++++++++---
src/conf/domain_conf.h | 1 +
src/cpu/cpu_x86.c | 35 +++++++------
src/cpu/cpu_x86_data.h | 2 +
src/qemu/qemu_command.c | 12 +++--
src/qemu/qemu_process.c | 20 +++++++-
tests/qemuxml2argvdata/hyperv.args | 4 +-
tests/qemuxml2argvdata/hyperv.xml | 4 +-
tests/qemuxml2xmloutdata/hyperv.xml | 4 +-
12 files changed, 158 insertions(+), 39 deletions(-)
--
2.20.1
5:13 a.m.
New subject: [libvirt] [PATCH v2 1/8] docs: formatdomain: add stimer flag to the example xml
The example XML we have contains all other Hyper-V Enlightenments but
'stimer' is missing.
Signed-off-by: Vitaly Kuznetsov <vkuznets(a)redhat.com>
Reviewed-by: Ján Tomko <jtomko(a)redhat.com>
---
docs/formatdomain.html.in | 1 +
1 file changed, 1 insertion(+)
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 1938bd875c..0894d9cbfb 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -2033,6 +2033,7 @@
<vpindex state='on'/>
<runtime state='on'/>
<synic state='on'/>
+ <stimer state='on'/>
<reset state='on'/>
<vendor_id state='on' value='KVM Hv'/>
<frequencies state='on'/>
--
2.20.1
5:13 a.m.
New subject: [libvirt] [PATCH v2 2/8] docs: formatdomain: fix 'SynIC' spelling
SynIC stands for 'Synthetic Interrupt Controller', it is not a NIC. Fix the
spelling in accordance with Hypervisor Top Level Functional Specification.
Signed-off-by: Vitaly Kuznetsov <vkuznets(a)redhat.com>
Reviewed-by: Ján Tomko <jtomko(a)redhat.com>
---
docs/formatdomain.html.in | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 0894d9cbfb..44b1ae7597 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -2142,13 +2142,13 @@
</tr>
<tr>
<td>synic</td>
- <td>Enable Synthetic Interrupt Controller (SyNIC)</td>
+ <td>Enable Synthetic Interrupt Controller (SynIC)</td>
<td>on, off</td>
<td><span class="since">1.3.3 (QEMU
2.6)</span></td>
</tr>
<tr>
<td>stimer</td>
- <td>Enable SyNIC timers</td>
+ <td>Enable SynIC timers</td>
<td>on, off</td>
<td><span class="since">1.3.3 (QEMU
2.6)</span></td>
</tr>
--
2.20.1
5:13 a.m.
New subject: [libvirt] [PATCH v2 3/8] docs: formatdomain: move 'msrs' out of Hyper-V Enlightenments
Introduced by: commit e9528f41c612fff334e958d5e5df197aa8e83792
'msrs' is a feature unrelated to Hyper-V Enlightenments, the commit message
which added it and the test have it right:
<features>
...
<msrs unknown='ignore'>
...
</features>
Signed-off-by: Vitaly Kuznetsov <vkuznets(a)redhat.com>
Reviewed-by: Ján Tomko <jtomko(a)redhat.com>
---
docs/formatdomain.html.in | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 44b1ae7597..f5c882141a 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -2041,7 +2041,6 @@
<tlbflush state='on'/>
<ipi state='on'/>
<evmcs state='on'/>
- <msrs unknown='ignore'/>
</hyperv>
<kvm>
<hidden state='on'/>
@@ -2057,6 +2056,7 @@
<tseg unit='MiB'>48</tseg>
</smm>
<htm state='on'/>
+ <msrs unknown='ignore'/>
</features>
...</pre>
--
2.20.1
5:13 a.m.
New subject: [libvirt] [PATCH v2 4/8] cpu_x86: add Edx to KVM_FEATURE_DEF()
Some Hyper-V features (like the upcoming Direct Synthetic timers) are
announced by feature bits in Edx but KVM_FEATURE_DEF() supports only Eax.
Signed-off-by: Vitaly Kuznetsov <vkuznets(a)redhat.com>
---
src/cpu/cpu_x86.c | 32 ++++++++++++++++----------------
1 file changed, 16 insertions(+), 16 deletions(-)
diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c
index 387c365512..8575915597 100644
--- a/src/cpu/cpu_x86.c
+++ b/src/cpu/cpu_x86.c
@@ -59,9 +59,9 @@ struct _virCPUx86Feature {
{ .type = VIR_CPU_X86_DATA_CPUID, \
.data = { .cpuid = {__VA_ARGS__} } }
-#define KVM_FEATURE_DEF(Name, Eax_in, Eax) \
+#define KVM_FEATURE_DEF(Name, Eax_in, Eax, Edx) \
static virCPUx86DataItem Name ## _data[] = { \
- CPUID(.eax_in = Eax_in, .eax = Eax), \
+ CPUID(.eax_in = Eax_in, .eax = Eax, .edx = Edx), \
}
#define KVM_FEATURE(Name) \
@@ -74,34 +74,34 @@ struct _virCPUx86Feature {
}
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_PV_UNHALT,
- 0x40000001, 0x00000080);
+ 0x40000001, 0x00000080, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_RUNTIME,
- 0x40000003, 0x00000001);
+ 0x40000003, 0x00000001, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_SYNIC,
- 0x40000003, 0x00000004);
+ 0x40000003, 0x00000004, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_STIMER,
- 0x40000003, 0x00000008);
+ 0x40000003, 0x00000008, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_RELAXED,
- 0x40000003, 0x00000020);
+ 0x40000003, 0x00000020, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_SPINLOCKS,
- 0x40000003, 0x00000022);
+ 0x40000003, 0x00000022, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_VAPIC,
- 0x40000003, 0x00000030);
+ 0x40000003, 0x00000030, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_VPINDEX,
- 0x40000003, 0x00000040);
+ 0x40000003, 0x00000040, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_RESET,
- 0x40000003, 0x00000080);
+ 0x40000003, 0x00000080, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_FREQUENCIES,
- 0x40000003, 0x00000800);
+ 0x40000003, 0x00000800, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_REENLIGHTENMENT,
- 0x40000003, 0x00002000);
+ 0x40000003, 0x00002000, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_TLBFLUSH,
- 0x40000004, 0x00000004);
+ 0x40000004, 0x00000004, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_IPI,
- 0x40000004, 0x00000400);
+ 0x40000004, 0x00000400, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_EVMCS,
- 0x40000004, 0x00004000);
+ 0x40000004, 0x00004000, 0x0);
static virCPUx86Feature x86_kvm_features[] =
{
--
2.20.1
5:13 a.m.
New subject: [libvirt] [PATCH v2 5/8] conf: change the way how Hyper-V features are printed out
Current code doesn't allow us to add sub-features as we always print the
closing '/>'. As a preparatory change to implementing 'direct'
sub-feature
for 'stimer' feature switch to printing closing tag individually.
No functional change.
Signed-off-by: Vitaly Kuznetsov <vkuznets(a)redhat.com>
---
src/conf/domain_conf.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 441eb1a5a2..0871f21494 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -28073,19 +28073,24 @@ virDomainDefFormatFeatures(virBufferPtr buf,
case VIR_DOMAIN_HYPERV_TLBFLUSH:
case VIR_DOMAIN_HYPERV_IPI:
case VIR_DOMAIN_HYPERV_EVMCS:
+ virBufferAddLit(&childBuf, "/>\n");
break;
case VIR_DOMAIN_HYPERV_SPINLOCKS:
- if (def->hyperv_features[j] != VIR_TRISTATE_SWITCH_ON)
+ if (def->hyperv_features[j] != VIR_TRISTATE_SWITCH_ON) {
+ virBufferAddLit(&childBuf, "/>\n");
break;
- virBufferAsprintf(&childBuf, " retries='%d'",
+ }
+ virBufferAsprintf(&childBuf, "
retries='%d'/>\n",
def->hyperv_spinlocks);
break;
case VIR_DOMAIN_HYPERV_VENDOR_ID:
- if (def->hyperv_features[j] != VIR_TRISTATE_SWITCH_ON)
+ if (def->hyperv_features[j] != VIR_TRISTATE_SWITCH_ON) {
+ virBufferAddLit(&childBuf, "/>\n");
break;
- virBufferEscapeString(&childBuf, "
value='%s'",
+ }
+ virBufferEscapeString(&childBuf, "
value='%s'/>\n",
def->hyperv_vendor_id);
break;
@@ -28093,8 +28098,6 @@ virDomainDefFormatFeatures(virBufferPtr buf,
case VIR_DOMAIN_HYPERV_LAST:
break;
}
-
- virBufferAddLit(&childBuf, "/>\n");
}
virBufferAdjustIndent(&childBuf, -2);
virBufferAddLit(&childBuf, "</hyperv>\n");
--
2.20.1
5:13 a.m.
New subject: [libvirt] [PATCH v2 6/8] conf: add support for Direct Mode for Hyper-V Synthetic timers
Support 'Direct Mode' for Hyper-V Synthetic Timers in domain config.
Make it 'stimer' enlightenment option as it is not a separate thing.
Signed-off-by: Vitaly Kuznetsov <vkuznets(a)redhat.com>
---
docs/formatdomain.html.in | 10 +++---
docs/schemas/domaincommon.rng | 16 ++++++++-
src/conf/domain_conf.c | 62 ++++++++++++++++++++++++++++++++++-
src/conf/domain_conf.h | 1 +
src/cpu/cpu_x86.c | 3 ++
src/cpu/cpu_x86_data.h | 2 ++
6 files changed, 88 insertions(+), 6 deletions(-)
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index f5c882141a..d778fc3f62 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -2033,7 +2033,9 @@
<vpindex state='on'/>
<runtime state='on'/>
<synic state='on'/>
- <stimer state='on'/>
+ <stimer state='on'>
+ <direct state='on'/>
+ </stimer>
<reset state='on'/>
<vendor_id state='on' value='KVM Hv'/>
<frequencies state='on'/>
@@ -2148,9 +2150,9 @@
</tr>
<tr>
<td>stimer</td>
- <td>Enable SynIC timers</td>
- <td>on, off</td>
- <td><span class="since">1.3.3 (QEMU
2.6)</span></td>
+ <td>Enable SynIC timers, optionally with Direct Mode support</td>
+ <td>on, off; direct - on,off</td>
+ <td><span class="since">1.3.3 (QEMU 2.6), direct mode
5.6.0 (QEMU 4.1)</span></td>
</tr>
<tr>
<td>reset</td>
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index a0771da45b..6707dcc634 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -5907,7 +5907,7 @@
</optional>
<optional>
<element name="stimer">
- <ref name="featurestate"/>
+ <ref name="stimer"/>
</element>
</optional>
<optional>
@@ -5956,6 +5956,20 @@
</element>
</define>
+ <!-- Hyper-V stimer features -->
+ <define name="stimer">
+ <interleave>
+ <optional>
+ <ref name="featurestate"/>
+ </optional>
+ <optional>
+ <element name="direct">
+ <ref name="featurestate"/>
+ </element>
+ </optional>
+ </interleave>
+ </define>
+
<!-- Optional KVM features -->
<define name="kvm">
<element name="kvm">
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 0871f21494..98273ab62a 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -20383,6 +20383,39 @@ virDomainDefParseXML(xmlDocPtr xml,
ctxt->node = node;
}
+ if (def->features[VIR_DOMAIN_HYPERV_STIMER] == VIR_TRISTATE_SWITCH_ON) {
+ int value;
+ if ((n = virXPathNodeSet("./features/hyperv/stimer/*", ctxt,
&nodes)) < 0)
+ goto error;
+
+ for (i = 0; i < n; i++) {
+ if (STRNEQ((const char *)nodes[i]->name, "direct")) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("unsupported Hyper-V stimer feature: %s"),
+ nodes[i]->name);
+ goto error;
+ }
+
+ if (!(tmp = virXMLPropString(nodes[i], "state"))) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("missing 'state' attribute for "
+ "Hyper-V stimer '%s' feature"),
"direct");
+ goto error;
+ }
+
+ if ((value = virTristateSwitchTypeFromString(tmp)) < 0) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("invalid value of state argument "
+ "for Hyper-V stimer '%s' feature"),
"direct");
+ goto error;
+ }
+
+ VIR_FREE(tmp);
+ def->hyperv_stimer_direct = value;
+ }
+ VIR_FREE(nodes);
+ }
+
if (def->features[VIR_DOMAIN_FEATURE_KVM] == VIR_TRISTATE_SWITCH_ON) {
int feature;
int value;
@@ -22607,6 +22640,17 @@ virDomainDefFeaturesCheckABIStability(virDomainDefPtr src,
}
}
+ if (src->hyperv_features[VIR_DOMAIN_HYPERV_STIMER] == VIR_TRISTATE_SWITCH_ON) {
+ if (src->hyperv_stimer_direct != dst->hyperv_stimer_direct) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("State of HyperV stimer direct feature differs: "
+ "source: '%s', destination:
'%s'"),
+ virTristateSwitchTypeToString(src->hyperv_stimer_direct),
+ virTristateSwitchTypeToString(dst->hyperv_stimer_direct));
+ return false;
+ }
+ }
+
/* kvm */
if (src->features[VIR_DOMAIN_FEATURE_KVM] == VIR_TRISTATE_SWITCH_ON) {
for (i = 0; i < VIR_DOMAIN_KVM_LAST; i++) {
@@ -28066,7 +28110,6 @@ virDomainDefFormatFeatures(virBufferPtr buf,
case VIR_DOMAIN_HYPERV_VPINDEX:
case VIR_DOMAIN_HYPERV_RUNTIME:
case VIR_DOMAIN_HYPERV_SYNIC:
- case VIR_DOMAIN_HYPERV_STIMER:
case VIR_DOMAIN_HYPERV_RESET:
case VIR_DOMAIN_HYPERV_FREQUENCIES:
case VIR_DOMAIN_HYPERV_REENLIGHTENMENT:
@@ -28085,6 +28128,23 @@ virDomainDefFormatFeatures(virBufferPtr buf,
def->hyperv_spinlocks);
break;
+ case VIR_DOMAIN_HYPERV_STIMER:
+ if (def->hyperv_features[j] != VIR_TRISTATE_SWITCH_ON) {
+ virBufferAddLit(&childBuf, "/>\n");
+ break;
+ }
+ if (def->hyperv_stimer_direct == VIR_TRISTATE_SWITCH_ON) {
+ virBufferAddLit(&childBuf, ">\n");
+ virBufferAdjustIndent(&childBuf, 2);
+ virBufferAddLit(&childBuf, "<direct
state='on'/>\n");
+ virBufferAdjustIndent(&childBuf, -2);
+ virBufferAddLit(&childBuf, "</stimer>\n");
+ } else {
+ virBufferAddLit(&childBuf, "/>\n");
+ }
+
+ break;
+
case VIR_DOMAIN_HYPERV_VENDOR_ID:
if (def->hyperv_features[j] != VIR_TRISTATE_SWITCH_ON) {
virBufferAddLit(&childBuf, "/>\n");
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 8a4425df64..7a2a9e16c0 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2400,6 +2400,7 @@ struct _virDomainDef {
int kvm_features[VIR_DOMAIN_KVM_LAST];
int msrs_features[VIR_DOMAIN_MSRS_LAST];
unsigned int hyperv_spinlocks;
+ int hyperv_stimer_direct;
virGICVersion gic_version;
virDomainHPTResizing hpt_resizing;
unsigned long long hpt_maxpagesize; /* Stored in KiB */
diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c
index 8575915597..fbfd9a5bfa 100644
--- a/src/cpu/cpu_x86.c
+++ b/src/cpu/cpu_x86.c
@@ -102,6 +102,8 @@ KVM_FEATURE_DEF(VIR_CPU_x86_HV_IPI,
0x40000004, 0x00000400, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_HV_EVMCS,
0x40000004, 0x00004000, 0x0);
+KVM_FEATURE_DEF(VIR_CPU_x86_HV_STIMER_DIRECT,
+ 0x40000003, 0x0, 0x00080000);
static virCPUx86Feature x86_kvm_features[] =
{
@@ -119,6 +121,7 @@ static virCPUx86Feature x86_kvm_features[] =
KVM_FEATURE(VIR_CPU_x86_HV_TLBFLUSH),
KVM_FEATURE(VIR_CPU_x86_HV_IPI),
KVM_FEATURE(VIR_CPU_x86_HV_EVMCS),
+ KVM_FEATURE(VIR_CPU_x86_HV_STIMER_DIRECT),
};
typedef struct _virCPUx86Model virCPUx86Model;
diff --git a/src/cpu/cpu_x86_data.h b/src/cpu/cpu_x86_data.h
index cc0c93dff0..cebf3b6669 100644
--- a/src/cpu/cpu_x86_data.h
+++ b/src/cpu/cpu_x86_data.h
@@ -64,6 +64,8 @@ struct _virCPUx86MSR {
#define VIR_CPU_x86_HV_IPI "hv-ipi"
#define VIR_CPU_x86_HV_EVMCS "hv-evmcs"
+/* Hyper-V Synthetic Timer option */
+#define VIR_CPU_x86_HV_STIMER_DIRECT "hv-stimer-direct"
#define VIR_CPU_X86_DATA_INIT { 0 }
--
2.20.1
5:13 a.m.
New subject: [libvirt] [PATCH v2 7/8] qemu: add support for Direct Mode for Hyper-V Synthetic timers
QEMU-4.1 supports 'Direct Mode' for Hyper-V synthetic timers
(hv-stimer-direct CPU flag): Windows guests can request that timer
expiration notifications are delivered as normal interrupts (and not
VMBus messages). This is used by Hyper-V on KVM.
Signed-off-by: Vitaly Kuznetsov <vkuznets(a)redhat.com>
---
src/qemu/qemu_command.c | 12 ++++++++----
src/qemu/qemu_process.c | 20 ++++++++++++++++++--
tests/qemuxml2argvdata/hyperv.args | 4 ++--
tests/qemuxml2argvdata/hyperv.xml | 4 +++-
tests/qemuxml2xmloutdata/hyperv.xml | 4 +++-
5 files changed, 34 insertions(+), 10 deletions(-)
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index fee51158a9..be5777023c 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -7151,10 +7151,10 @@ qemuBuildCpuCommandLine(virCommandPtr cmd,
}
if (def->features[VIR_DOMAIN_FEATURE_HYPERV] == VIR_TRISTATE_SWITCH_ON) {
- const char *hvPrefix = "hv-";
+ const char *hvDelimiter = "-";
if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_CANONICAL_CPU_FEATURES))
- hvPrefix = "hv_";
+ hvDelimiter = "_";
for (i = 0; i < VIR_DOMAIN_HYPERV_LAST; i++) {
switch ((virDomainHyperv) i) {
@@ -7171,9 +7171,13 @@ qemuBuildCpuCommandLine(virCommandPtr cmd,
case VIR_DOMAIN_HYPERV_IPI:
case VIR_DOMAIN_HYPERV_EVMCS:
if (def->hyperv_features[i] == VIR_TRISTATE_SWITCH_ON)
- virBufferAsprintf(&buf, ",%s%s",
- hvPrefix,
+ virBufferAsprintf(&buf, ",hv%s%s",
+ hvDelimiter,
virDomainHypervTypeToString(i));
+ if ((i == VIR_DOMAIN_HYPERV_STIMER) &&
+ (def->hyperv_stimer_direct == VIR_TRISTATE_SWITCH_ON))
+ virBufferAsprintf(&buf, ",hv%sstimer%sdirect",
hvDelimiter,
+ hvDelimiter);
break;
case VIR_DOMAIN_HYPERV_SPINLOCKS:
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 0ee97e2296..ad1a75bfee 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -4111,10 +4111,26 @@ qemuProcessVerifyHypervFeatures(virDomainDefPtr def,
rc = virCPUDataCheckFeature(cpu, cpuFeature);
VIR_FREE(cpuFeature);
- if (rc < 0)
+ if (rc < 0) {
return -1;
- else if (rc == 1)
+ } else if (rc == 1) {
+ if (i == VIR_DOMAIN_HYPERV_STIMER) {
+ if (def->hyperv_stimer_direct != VIR_TRISTATE_SWITCH_ON)
+ continue;
+
+ rc = virCPUDataCheckFeature(cpu, "hv-stimer-direct");
+ if (rc < 0)
+ return -1;
+ else if (rc == 1)
+ continue;
+
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("host doesn't support hyperv stimer
'%s' feature"),
+ "direct");
+ return -1;
+ }
continue;
+ }
switch ((virDomainHyperv) i) {
case VIR_DOMAIN_HYPERV_RELAXED:
diff --git a/tests/qemuxml2argvdata/hyperv.args b/tests/qemuxml2argvdata/hyperv.args
index 086adaa349..8040da9caa 100644
--- a/tests/qemuxml2argvdata/hyperv.args
+++ b/tests/qemuxml2argvdata/hyperv.args
@@ -12,8 +12,8 @@ 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_reenlightenment,hv_tlbflush,hv_ipi,hv_evmcs' \
+hv_synic,hv_stimer,hv_stimer_direct,hv_reset,hv-vendor-id=KVM Hv,\
+hv_frequencies,hv_reenlightenment,hv_tlbflush,hv_ipi,hv_evmcs' \
-m 214 \
-realtime mlock=off \
-smp 6,sockets=6,cores=1,threads=1 \
diff --git a/tests/qemuxml2argvdata/hyperv.xml b/tests/qemuxml2argvdata/hyperv.xml
index c6feaed528..ae0f934f76 100644
--- a/tests/qemuxml2argvdata/hyperv.xml
+++ b/tests/qemuxml2argvdata/hyperv.xml
@@ -17,7 +17,9 @@
<vpindex state='on'/>
<runtime state='on'/>
<synic state='on'/>
- <stimer state='on'/>
+ <stimer state='on'>
+ <direct state='on'/>
+ </stimer>
<reset state='on'/>
<vendor_id state='on' value='KVM Hv'/>
<frequencies state='on'/>
diff --git a/tests/qemuxml2xmloutdata/hyperv.xml b/tests/qemuxml2xmloutdata/hyperv.xml
index 5510d3dfad..2e4b43d4c6 100644
--- a/tests/qemuxml2xmloutdata/hyperv.xml
+++ b/tests/qemuxml2xmloutdata/hyperv.xml
@@ -17,7 +17,9 @@
<vpindex state='on'/>
<runtime state='on'/>
<synic state='on'/>
- <stimer state='on'/>
+ <stimer state='on'>
+ <direct state='on'/>
+ </stimer>
<reset state='on'/>
<vendor_id state='on' value='KVM Hv'/>
<frequencies state='on'/>
--
2.20.1
5:13 a.m.
New subject: [libvirt] [PATCH v2 8/8] news: mention Direct Mode for Hyper-V Synthetic timers support
The QEMU driver now supports Direct Mode for Hyper-V Synthetic timers
for Hyper-V guests.
Signed-off-by: Vitaly Kuznetsov <vkuznets(a)redhat.com>
---
docs/news.xml | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/docs/news.xml b/docs/news.xml
index 1134309ec2..e4d8f1ecac 100644
--- a/docs/news.xml
+++ b/docs/news.xml
@@ -54,6 +54,15 @@
<libvirt>
<release version="v5.6.0" date="unreleased">
<section title="New features">
+ <change>
+ <summary>
+ qemu: Support Direct Mode for Hyper-V Synthetic timers
+ </summary>
+ <description>
+ The QEMU driver now supports Direct Mode for Hyper-V Synthetic timers
+ for Hyper-V guests.
+ </description>
+ </change>
<change>
<summary>
qemu: Introduce a new video model of type 'bochs'
--
2.20.1
5:46 a.m.
On Tue, Jul 30, 2019 at 12:13:40PM +0200, Vitaly Kuznetsov wrote:
Changes since v1:
- Rebase
- Add Ján's R-b tags.
- Hardcode 'direct' as the only stimer feature to avoid over-engineering
[Ján Tomko]
- Split 'conf' patch into three [Ján Tomko]
- Minor fixes [Ján Tomko]
QEMU-4.1 will bring us Direct Mode for Hyper-V Synthetic timers support,
we need to support it in libvirt too. As this is not a new enlightenment
but rather an enhancement of an existing one ('stimer'), support it in
<stimer state='on'>
<direct state='on'/>
</stimer>
form. Backwards compatibility is (hopefully) preserved.
Vitaly Kuznetsov (8):
docs: formatdomain: add stimer flag to the example xml
docs: formatdomain: fix 'SynIC' spelling
docs: formatdomain: move 'msrs' out of Hyper-V Enlightenments
I went ahead and pushed these now in the freeze since they are fixing
the documentation.
Jano
cpu_x86: add Edx to KVM_FEATURE_DEF()
conf: change the way how Hyper-V features are printed out
conf: add support for Direct Mode for Hyper-V Synthetic timers
qemu: add support for Direct Mode for Hyper-V Synthetic timers
news: mention Direct Mode for Hyper-V Synthetic timers support
docs/formatdomain.html.in | 13 +++--
docs/news.xml | 9 ++++
docs/schemas/domaincommon.rng | 16 +++++-
src/conf/domain_conf.c | 77 ++++++++++++++++++++++++++---
src/conf/domain_conf.h | 1 +
src/cpu/cpu_x86.c | 35 +++++++------
src/cpu/cpu_x86_data.h | 2 +
src/qemu/qemu_command.c | 12 +++--
src/qemu/qemu_process.c | 20 +++++++-
tests/qemuxml2argvdata/hyperv.args | 4 +-
tests/qemuxml2argvdata/hyperv.xml | 4 +-
tests/qemuxml2xmloutdata/hyperv.xml | 4 +-
12 files changed, 158 insertions(+), 39 deletions(-)
--
2.20.1
--
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