153 lines
6.0 KiB
Diff
153 lines
6.0 KiB
Diff
From 742667e7f0a55f3a8042840e2995982a003dc2fc Mon Sep 17 00:00:00 2001
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Message-Id: <742667e7f0a55f3a8042840e2995982a003dc2fc@dist-git>
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From: Andrea Bolognani <abologna@redhat.com>
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Date: Tue, 4 Dec 2018 16:46:19 +0100
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Subject: [PATCH] conf: Parse and format nested-hv feature
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Signed-off-by: Andrea Bolognani <abologna@redhat.com>
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(cherry picked from commit bfa2bd7e38f2777260b63200ef12804e13a7a5c2)
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https://bugzilla.redhat.com/show_bug.cgi?id=1647822
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Signed-off-by: Andrea Bolognani <abologna@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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docs/formatdomain.html.in | 12 ++++++++++++
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docs/schemas/domaincommon.rng | 5 +++++
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src/conf/domain_conf.c | 4 ++++
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src/conf/domain_conf.h | 1 +
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src/qemu/qemu_domain.c | 1 +
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tests/qemuxml2argvdata/pseries-features.xml | 1 +
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tests/qemuxml2xmloutdata/pseries-features.xml | 1 +
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7 files changed, 25 insertions(+)
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diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
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index 54eb298414..02d0ac4241 100644
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--- a/docs/formatdomain.html.in
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+++ b/docs/formatdomain.html.in
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@@ -2191,6 +2191,18 @@
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defined, the hypervisor default will be used.
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<span class="since">Since 4.6.0</span> (QEMU/KVM only)
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</dd>
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+ <dt><code>nested-hv</code></dt>
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+ <dd>Configure nested HV availability for pSeries guests. This needs to
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+ be enabled from the host (L0) in order to be effective; having HV
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+ support in the (L1) guest is very desiderable if it's planned to
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+ run nested (L2) guests inside it, because it will result in those
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+ nested guests having much better performance than they would when
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+ using KVM PR or TCG.
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+ Possible values for the <code>state</code> attribute are
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+ <code>on</code> and <code>off</code>. If the attribute is not
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+ defined, the hypervisor default will be used.
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+ <span class="since">Since 4.10.0</span> (QEMU/KVM only)
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+ </dd>
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</dl>
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<h3><a id="elementsTime">Time keeping</a></h3>
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diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
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index e4ce7804b9..70a7767d9c 100644
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--- a/docs/schemas/domaincommon.rng
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+++ b/docs/schemas/domaincommon.rng
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@@ -4925,6 +4925,11 @@
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<ref name="featurestate"/>
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</element>
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</optional>
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+ <optional>
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+ <element name="nested-hv">
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+ <ref name="featurestate"/>
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+ </element>
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+ </optional>
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</interleave>
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</element>
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</optional>
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diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
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index e013e9f0c5..660e1523fe 100644
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--- a/src/conf/domain_conf.c
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+++ b/src/conf/domain_conf.c
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@@ -153,6 +153,7 @@ VIR_ENUM_IMPL(virDomainFeature, VIR_DOMAIN_FEATURE_LAST,
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"hpt",
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"vmcoreinfo",
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"htm",
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+ "nested-hv",
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);
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VIR_ENUM_IMPL(virDomainCapabilitiesPolicy, VIR_DOMAIN_CAPABILITIES_POLICY_LAST,
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@@ -19987,6 +19988,7 @@ virDomainDefParseXML(xmlDocPtr xml,
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break;
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case VIR_DOMAIN_FEATURE_HTM:
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+ case VIR_DOMAIN_FEATURE_NESTED_HV:
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if (!(tmp = virXMLPropString(nodes[i], "state"))) {
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virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
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_("missing state attribute '%s' of feature '%s'"),
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@@ -22147,6 +22149,7 @@ virDomainDefFeaturesCheckABIStability(virDomainDefPtr src,
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case VIR_DOMAIN_FEATURE_SMM:
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case VIR_DOMAIN_FEATURE_VMCOREINFO:
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case VIR_DOMAIN_FEATURE_HTM:
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+ case VIR_DOMAIN_FEATURE_NESTED_HV:
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if (src->features[i] != dst->features[i]) {
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virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
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_("State of feature '%s' differs: "
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@@ -27823,6 +27826,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
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case VIR_DOMAIN_FEATURE_PVSPINLOCK:
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case VIR_DOMAIN_FEATURE_VMPORT:
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case VIR_DOMAIN_FEATURE_HTM:
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+ case VIR_DOMAIN_FEATURE_NESTED_HV:
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switch ((virTristateSwitch) def->features[i]) {
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case VIR_TRISTATE_SWITCH_LAST:
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case VIR_TRISTATE_SWITCH_ABSENT:
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diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
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index d32514e7e6..f05fca284f 100644
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--- a/src/conf/domain_conf.h
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+++ b/src/conf/domain_conf.h
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@@ -1775,6 +1775,7 @@ typedef enum {
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VIR_DOMAIN_FEATURE_HPT,
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VIR_DOMAIN_FEATURE_VMCOREINFO,
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VIR_DOMAIN_FEATURE_HTM,
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+ VIR_DOMAIN_FEATURE_NESTED_HV,
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VIR_DOMAIN_FEATURE_LAST
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} virDomainFeature;
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diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
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index 4fcca1e05a..0ddc6ef4a7 100644
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--- a/src/qemu/qemu_domain.c
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+++ b/src/qemu/qemu_domain.c
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@@ -3819,6 +3819,7 @@ qemuDomainDefValidateFeatures(const virDomainDef *def,
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case VIR_DOMAIN_FEATURE_HPT:
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case VIR_DOMAIN_FEATURE_HTM:
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+ case VIR_DOMAIN_FEATURE_NESTED_HV:
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if (def->features[i] != VIR_TRISTATE_SWITCH_ABSENT &&
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!qemuDomainIsPSeries(def)) {
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virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
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diff --git a/tests/qemuxml2argvdata/pseries-features.xml b/tests/qemuxml2argvdata/pseries-features.xml
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index 5c842fe87b..6f7d32b065 100644
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--- a/tests/qemuxml2argvdata/pseries-features.xml
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+++ b/tests/qemuxml2argvdata/pseries-features.xml
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@@ -11,6 +11,7 @@
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<maxpagesize unit='GiB'>1</maxpagesize>
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</hpt>
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<htm state='on'/>
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+ <nested-hv state='off'/>
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</features>
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<devices>
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<emulator>/usr/bin/qemu-system-ppc64</emulator>
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diff --git a/tests/qemuxml2xmloutdata/pseries-features.xml b/tests/qemuxml2xmloutdata/pseries-features.xml
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index 55a44c75a0..7e12bc9c03 100644
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--- a/tests/qemuxml2xmloutdata/pseries-features.xml
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+++ b/tests/qemuxml2xmloutdata/pseries-features.xml
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@@ -13,6 +13,7 @@
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<maxpagesize unit='KiB'>1048576</maxpagesize>
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</hpt>
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<htm state='on'/>
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+ <nested-hv state='off'/>
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</features>
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<clock offset='utc'/>
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<on_poweroff>destroy</on_poweroff>
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--
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2.20.1
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