11:08 a.m.
Signed-off-by: Andrea Bolognani <abologna(a)redhat.com>
---
docs/formatdomain.html.in | 12 ++++++++++++
docs/schemas/domaincommon.rng | 5 +++++
src/conf/domain_conf.c | 4 ++++
src/conf/domain_conf.h | 1 +
src/qemu/qemu_domain.c | 1 +
tests/qemuxml2argvdata/pseries-features.xml | 1 +
tests/qemuxml2xmloutdata/pseries-features.xml | 1 +
7 files changed, 25 insertions(+)
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 2af4960981..84259c45e4 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -2295,6 +2295,18 @@
defined, the hypervisor default will be used.
<span class="since">Since 4.6.0</span> (QEMU/KVM only)
</dd>
+ <dt><code>nested-hv</code></dt>
+ <dd>Configure nested HV availability for pSeries guests. This needs to
+ be enabled from the host (L0) in order to be effective; having HV
+ support in the (L1) guest is very desiderable if it's planned to
+ run nested (L2) guests inside it, because it will result in those
+ nested guests having much better performance than they would when
+ using KVM PR or TCG.
+ Possible values for the <code>state</code> attribute are
+ <code>on</code> and <code>off</code>. If the attribute
is not
+ defined, the hypervisor default will be used.
+ <span class="since">Since 4.10.0</span> (QEMU/KVM only)
+ </dd>
</dl>
<h3><a id="elementsTime">Time keeping</a></h3>
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 5ee727eefa..d7a022a4ae 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -4976,6 +4976,11 @@
<ref name="featurestate"/>
</element>
</optional>
+ <optional>
+ <element name="nested-hv">
+ <ref name="featurestate"/>
+ </element>
+ </optional>
</interleave>
</element>
</optional>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 13874837c2..90f5618a04 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -153,6 +153,7 @@ VIR_ENUM_IMPL(virDomainFeature, VIR_DOMAIN_FEATURE_LAST,
"hpt",
"vmcoreinfo",
"htm",
+ "nested-hv",
);
VIR_ENUM_IMPL(virDomainCapabilitiesPolicy, VIR_DOMAIN_CAPABILITIES_POLICY_LAST,
@@ -20155,6 +20156,7 @@ virDomainDefParseXML(xmlDocPtr xml,
break;
case VIR_DOMAIN_FEATURE_HTM:
+ case VIR_DOMAIN_FEATURE_NESTED_HV:
if (!(tmp = virXMLPropString(nodes[i], "state"))) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("missing state attribute '%s' of feature
'%s'"),
@@ -22317,6 +22319,7 @@ virDomainDefFeaturesCheckABIStability(virDomainDefPtr src,
case VIR_DOMAIN_FEATURE_SMM:
case VIR_DOMAIN_FEATURE_VMCOREINFO:
case VIR_DOMAIN_FEATURE_HTM:
+ case VIR_DOMAIN_FEATURE_NESTED_HV:
if (src->features[i] != dst->features[i]) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("State of feature '%s' differs: "
@@ -28232,6 +28235,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
case VIR_DOMAIN_FEATURE_PVSPINLOCK:
case VIR_DOMAIN_FEATURE_VMPORT:
case VIR_DOMAIN_FEATURE_HTM:
+ case VIR_DOMAIN_FEATURE_NESTED_HV:
switch ((virTristateSwitch) def->features[i]) {
case VIR_TRISTATE_SWITCH_LAST:
case VIR_TRISTATE_SWITCH_ABSENT:
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 467785cd83..b84db2ab7c 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1777,6 +1777,7 @@ typedef enum {
VIR_DOMAIN_FEATURE_HPT,
VIR_DOMAIN_FEATURE_VMCOREINFO,
VIR_DOMAIN_FEATURE_HTM,
+ VIR_DOMAIN_FEATURE_NESTED_HV,
VIR_DOMAIN_FEATURE_LAST
} virDomainFeature;
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index a8a235a897..ee61caa823 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -3890,6 +3890,7 @@ qemuDomainDefValidateFeatures(const virDomainDef *def,
case VIR_DOMAIN_FEATURE_HPT:
case VIR_DOMAIN_FEATURE_HTM:
+ case VIR_DOMAIN_FEATURE_NESTED_HV:
if (def->features[i] != VIR_TRISTATE_SWITCH_ABSENT &&
!qemuDomainIsPSeries(def)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
diff --git a/tests/qemuxml2argvdata/pseries-features.xml
b/tests/qemuxml2argvdata/pseries-features.xml
index 5c842fe87b..6f7d32b065 100644
--- a/tests/qemuxml2argvdata/pseries-features.xml
+++ b/tests/qemuxml2argvdata/pseries-features.xml
@@ -11,6 +11,7 @@
<maxpagesize unit='GiB'>1</maxpagesize>
</hpt>
<htm state='on'/>
+ <nested-hv state='off'/>
</features>
<devices>
<emulator>/usr/bin/qemu-system-ppc64</emulator>
diff --git a/tests/qemuxml2xmloutdata/pseries-features.xml
b/tests/qemuxml2xmloutdata/pseries-features.xml
index 55a44c75a0..7e12bc9c03 100644
--- a/tests/qemuxml2xmloutdata/pseries-features.xml
+++ b/tests/qemuxml2xmloutdata/pseries-features.xml
@@ -13,6 +13,7 @@
<maxpagesize unit='KiB'>1048576</maxpagesize>
</hpt>
<htm state='on'/>
+ <nested-hv state='off'/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
--
2.19.1