[libvirt] [PATCH 4/6] conf: add support for Direct Mode for Hyper-V Synthetic timers
Vitaly Kuznetsov
vkuznets at redhat.com
Thu Jul 25 13:52:16 UTC 2019
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 at redhat.com>
---
docs/formatdomain.html.in | 10 ++-
docs/schemas/domaincommon.rng | 16 +++-
src/conf/domain_conf.c | 138 +++++++++++++++++++++++++++++++---
src/conf/domain_conf.h | 8 ++
src/cpu/cpu_x86.c | 51 +++++++------
src/cpu/cpu_x86_data.h | 2 +
src/libvirt_private.syms | 2 +
7 files changed, 187 insertions(+), 40 deletions(-)
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 1aaddb6d9b..a0723edad1 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 763480440c..8cf1995748 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -5896,7 +5896,7 @@
</optional>
<optional>
<element name="stimer">
- <ref name="featurestate"/>
+ <ref name="stimer"/>
</element>
</optional>
<optional>
@@ -5945,6 +5945,20 @@
</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 0574c69a46..779b4ed880 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -197,6 +197,11 @@ VIR_ENUM_IMPL(virDomainHyperv,
"evmcs",
);
+VIR_ENUM_IMPL(virDomainHypervStimer,
+ VIR_DOMAIN_HYPERV_STIMER_LAST,
+ "direct",
+);
+
VIR_ENUM_IMPL(virDomainKVM,
VIR_DOMAIN_KVM_LAST,
"hidden",
@@ -20359,6 +20364,51 @@ virDomainDefParseXML(xmlDocPtr xml,
ctxt->node = node;
}
+ if (def->features[VIR_DOMAIN_HYPERV_STIMER] == VIR_TRISTATE_SWITCH_ON) {
+ int feature;
+ int value;
+ if ((n = virXPathNodeSet("./features/hyperv/stimer/*", ctxt, &nodes)) < 0)
+ goto error;
+
+ for (i = 0; i < n; i++) {
+ feature = virDomainHypervStimerTypeFromString((const char *)nodes[i]->name);
+ if (feature < 0) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("unsupported Hyper-V stimer feature: %s"),
+ nodes[i]->name);
+ goto error;
+ }
+
+ switch ((virDomainHypervStimer) feature) {
+ case VIR_DOMAIN_HYPERV_STIMER_DIRECT:
+ if (!(tmp = virXMLPropString(nodes[i], "state"))) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("missing 'state' attribute for "
+ "Hyper-V stimer feature '%s'"),
+ nodes[i]->name);
+ goto error;
+ }
+
+ if ((value = virTristateSwitchTypeFromString(tmp)) < 0) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("invalid value of state argument "
+ "for Hyper-V stimer feature '%s'"),
+ nodes[i]->name);
+ goto error;
+ }
+
+ VIR_FREE(tmp);
+ def->hyperv_stimer_features[feature] = value;
+ break;
+
+ /* coverity[dead_error_begin] */
+ case VIR_DOMAIN_HYPERV_STIMER_LAST:
+ break;
+ }
+ }
+ VIR_FREE(nodes);
+ }
+
if (def->features[VIR_DOMAIN_FEATURE_KVM] == VIR_TRISTATE_SWITCH_ON) {
int feature;
int value;
@@ -22583,6 +22633,29 @@ virDomainDefFeaturesCheckABIStability(virDomainDefPtr src,
}
}
+ if (src->hyperv_features[VIR_DOMAIN_HYPERV_STIMER] == VIR_TRISTATE_SWITCH_ON) {
+ for (i = 0; i < VIR_DOMAIN_HYPERV_STIMER_LAST; i++) {
+ switch ((virDomainHypervStimer) i) {
+ case VIR_DOMAIN_HYPERV_STIMER_DIRECT:
+ if (src->hyperv_stimer_features[i] != dst->hyperv_stimer_features[i]) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("State of HyperV stimer feature '%s' differs: "
+ "source: '%s', destination: '%s'"),
+ virDomainHypervStimerTypeToString(i),
+ virTristateSwitchTypeToString(src->hyperv_stimer_features[i]),
+ virTristateSwitchTypeToString(dst->hyperv_stimer_features[i]));
+ return false;
+ }
+
+ break;
+
+ /* coverity[dead_error_begin] */
+ case VIR_DOMAIN_HYPERV_STIMER_LAST:
+ break;
+ }
+ }
+ }
+
/* kvm */
if (src->features[VIR_DOMAIN_FEATURE_KVM] == VIR_TRISTATE_SWITCH_ON) {
for (i = 0; i < VIR_DOMAIN_KVM_LAST; i++) {
@@ -28017,6 +28090,8 @@ virDomainDefFormatFeatures(virBufferPtr buf,
virBufferAddLit(&childBuf, "<hyperv>\n");
virBufferAdjustIndent(&childBuf, 2);
for (j = 0; j < VIR_DOMAIN_HYPERV_LAST; j++) {
+ size_t k;
+
if (def->hyperv_features[j] == VIR_TRISTATE_SWITCH_ABSENT)
continue;
@@ -28031,35 +28106,76 @@ 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:
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)
+ case VIR_DOMAIN_HYPERV_STIMER:
+ if (def->hyperv_features[j] != VIR_TRISTATE_SWITCH_ON) {
+ virBufferAddLit(&childBuf, "/>\n");
+ break;
+ }
+
+ for (k = 0; k < VIR_DOMAIN_HYPERV_STIMER_LAST; k++) {
+ if (def->hyperv_stimer_features[k])
+ break;
+ }
+
+ /* Omit long <stimer></stimer> form when no features are enabled */
+ if (k == VIR_DOMAIN_HYPERV_STIMER_LAST) {
+ virBufferAddLit(&childBuf, "/>\n");
break;
- virBufferAsprintf(&childBuf, " retries='%d'",
- def->hyperv_spinlocks);
+ }
+
+ virBufferAddLit(&childBuf, ">\n");
+ virBufferAdjustIndent(&childBuf, 2);
+
+ for (k = 0; k < VIR_DOMAIN_HYPERV_STIMER_LAST; k++) {
+ switch ((virDomainHypervStimer) k) {
+ case VIR_DOMAIN_HYPERV_STIMER_DIRECT:
+ if (def->hyperv_stimer_features[k])
+ virBufferAsprintf(&childBuf, "<%s state='%s'/>\n",
+ virDomainHypervStimerTypeToString(k),
+ virTristateSwitchTypeToString(
+ def->hyperv_stimer_features[k]));
+ break;
+
+ /* coverity[dead_error_begin] */
+ case VIR_DOMAIN_HYPERV_STIMER_LAST:
+ break;
+ }
+ }
+
+ virBufferAdjustIndent(&childBuf, -2);
+ virBufferAddLit(&childBuf, "</stimer>\n");
+
+ break;
+
+ case VIR_DOMAIN_HYPERV_SPINLOCKS:
+ if (def->hyperv_features[j] == VIR_TRISTATE_SWITCH_ON) {
+ virBufferAsprintf(&childBuf, " retries='%d'",
+ def->hyperv_spinlocks);
+ }
+ virBufferAddLit(&childBuf, "/>\n");
break;
case VIR_DOMAIN_HYPERV_VENDOR_ID:
- if (def->hyperv_features[j] != VIR_TRISTATE_SWITCH_ON)
- break;
- virBufferEscapeString(&childBuf, " value='%s'",
- def->hyperv_vendor_id);
+ if (def->hyperv_features[j] == VIR_TRISTATE_SWITCH_ON) {
+ virBufferEscapeString(&childBuf, " value='%s'",
+ def->hyperv_vendor_id);
+ }
+ virBufferAddLit(&childBuf, "/>\n");
break;
/* coverity[dead_error_begin] */
case VIR_DOMAIN_HYPERV_LAST:
break;
}
-
- virBufferAddLit(&childBuf, "/>\n");
}
virBufferAdjustIndent(&childBuf, -2);
virBufferAddLit(&childBuf, "</hyperv>\n");
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 48b0af4b04..fc12887fc3 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1762,6 +1762,12 @@ typedef enum {
VIR_DOMAIN_HYPERV_LAST
} virDomainHyperv;
+typedef enum {
+ VIR_DOMAIN_HYPERV_STIMER_DIRECT = 0,
+
+ VIR_DOMAIN_HYPERV_STIMER_LAST
+} virDomainHypervStimer;
+
typedef enum {
VIR_DOMAIN_KVM_HIDDEN = 0,
@@ -2400,6 +2406,7 @@ struct _virDomainDef {
int kvm_features[VIR_DOMAIN_KVM_LAST];
int msrs_features[VIR_DOMAIN_MSRS_LAST];
unsigned int hyperv_spinlocks;
+ int hyperv_stimer_features[VIR_DOMAIN_HYPERV_STIMER_LAST];
virGICVersion gic_version;
virDomainHPTResizing hpt_resizing;
unsigned long long hpt_maxpagesize; /* Stored in KiB */
@@ -3420,6 +3427,7 @@ VIR_ENUM_DECL(virDomainGraphicsSpiceStreamingMode);
VIR_ENUM_DECL(virDomainGraphicsSpiceMouseMode);
VIR_ENUM_DECL(virDomainGraphicsVNCSharePolicy);
VIR_ENUM_DECL(virDomainHyperv);
+VIR_ENUM_DECL(virDomainHypervStimer);
VIR_ENUM_DECL(virDomainKVM);
VIR_ENUM_DECL(virDomainMsrsUnknown);
VIR_ENUM_DECL(virDomainRNGModel);
diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c
index 55b55da784..4fb9e6a4df 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) \
@@ -74,49 +74,51 @@ struct _virCPUx86Feature {
}
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_CLOCKSOURCE,
- 0x40000001, 0x00000001);
+ 0x40000001, 0x00000001, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_NOP_IO_DELAY,
- 0x40000001, 0x00000002);
+ 0x40000001, 0x00000002, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_MMU_OP,
- 0x40000001, 0x00000004);
+ 0x40000001, 0x00000004, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_CLOCKSOURCE2,
- 0x40000001, 0x00000008);
+ 0x40000001, 0x00000008, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_ASYNC_PF,
- 0x40000001, 0x00000010);
+ 0x40000001, 0x00000010, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_STEAL_TIME,
- 0x40000001, 0x00000020);
+ 0x40000001, 0x00000020, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_PV_EOI,
- 0x40000001, 0x00000040);
+ 0x40000001, 0x00000040, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_PV_UNHALT,
- 0x40000001, 0x00000080);
+ 0x40000001, 0x00000080, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_CLOCKSOURCE_STABLE_BIT,
- 0x40000001, 0x01000000);
+ 0x40000001, 0x01000000, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_RUNTIME,
- 0x40000003, 0x00000001);
+ 0x40000003, 0x00000001, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_SYNIC,
- 0x40000003, 0x00000004);
+ 0x40000003, 0x00000004, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_STIMER,
- 0x40000003, 0x00000008);
+ 0x40000003, 0x00000008, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_RELAXED,
- 0x40000003, 0x00000020);
+ 0x40000003, 0x00000020, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_SPINLOCKS,
- 0x40000003, 0x00000022);
+ 0x40000003, 0x00000022, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_VAPIC,
- 0x40000003, 0x00000030);
+ 0x40000003, 0x00000030, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_VPINDEX,
- 0x40000003, 0x00000040);
+ 0x40000003, 0x00000040, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_RESET,
- 0x40000003, 0x00000080);
+ 0x40000003, 0x00000080, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_FREQUENCIES,
- 0x40000003, 0x00000800);
+ 0x40000003, 0x00000800, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_REENLIGHTENMENT,
- 0x40000003, 0x00002000);
+ 0x40000003, 0x00002000, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_TLBFLUSH,
- 0x40000004, 0x00000004);
+ 0x40000004, 0x00000004, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_IPI,
- 0x40000004, 0x00000400);
+ 0x40000004, 0x00000400, 0x0);
KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_EVMCS,
- 0x40000004, 0x00004000);
+ 0x40000004, 0x00004000, 0x0);
+KVM_FEATURE_DEF(VIR_CPU_x86_KVM_HV_STIMER_DIRECT,
+ 0x40000003, 0x0, 0x00080000);
static virCPUx86Feature x86_kvm_features[] =
{
@@ -142,6 +144,7 @@ static virCPUx86Feature x86_kvm_features[] =
KVM_FEATURE(VIR_CPU_x86_KVM_HV_TLBFLUSH),
KVM_FEATURE(VIR_CPU_x86_KVM_HV_IPI),
KVM_FEATURE(VIR_CPU_x86_KVM_HV_EVMCS),
+ KVM_FEATURE(VIR_CPU_x86_KVM_HV_STIMER_DIRECT),
};
typedef struct _virCPUx86Model virCPUx86Model;
diff --git a/src/cpu/cpu_x86_data.h b/src/cpu/cpu_x86_data.h
index f3f4d7ab9c..198f19e037 100644
--- a/src/cpu/cpu_x86_data.h
+++ b/src/cpu/cpu_x86_data.h
@@ -72,6 +72,8 @@ struct _virCPUx86MSR {
#define VIR_CPU_x86_KVM_HV_IPI "__kvm_hv_ipi"
#define VIR_CPU_x86_KVM_HV_EVMCS "__kvm_hv_evmcs"
+/* Hyper-V Synthetic Timer (virDomainHypervStimer) features */
+#define VIR_CPU_x86_KVM_HV_STIMER_DIRECT "__kvm_hv_stimer_direct"
#define VIR_CPU_X86_DATA_INIT { 0 }
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index dff97bd82a..ef8e6cd183 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -418,6 +418,8 @@ virDomainHostdevSubsysTypeToString;
virDomainHPTResizingTypeToString;
virDomainHubTypeFromString;
virDomainHubTypeToString;
+virDomainHypervStimerTypeFromString;
+virDomainHypervStimerTypeToString;
virDomainHypervTypeFromString;
virDomainHypervTypeToString;
virDomainInputBusTypeToString;
--
2.20.1
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