[libvirt] [PATCH v2 2/3] qemu: Implement the HTM pSeries feature
Andrea Bolognani
abologna at redhat.com
Tue Jun 19 13:30:53 UTC 2018
https://bugzilla.redhat.com/show_bug.cgi?id=1525599
Signed-off-by: Andrea Bolognani <abologna at redhat.com>
---
docs/formatdomain.html.in | 8 ++++++++
docs/schemas/domaincommon.rng | 5 +++++
src/conf/domain_conf.c | 19 +++++++++++++++++++
src/conf/domain_conf.h | 1 +
src/qemu/qemu_command.c | 20 ++++++++++++++++++++
src/qemu/qemu_domain.c | 13 +++++++++++++
tests/qemuxml2argvdata/pseries-features.args | 3 ++-
tests/qemuxml2argvdata/pseries-features.xml | 1 +
tests/qemuxml2argvtest.c | 1 +
tests/qemuxml2xmltest.c | 1 +
10 files changed, 71 insertions(+), 1 deletion(-)
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 7e710d7c4a..0ab3235278 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -1927,6 +1927,7 @@
<smm state='on'>
<tseg unit='MiB'>48</tseg>
</smm>
+ <htm state='on'/>
</features>
...</pre>
@@ -2155,6 +2156,13 @@
<dd>Enable QEMU vmcoreinfo device to let the guest kernel save debug
details. <span class="since">Since 4.4.0</span> (QEMU only)
</dd>
+ <dt><code>htm</code></dt>
+ <dd>Configure HTM (Hardware Transational Memory) availability for
+ pSeries guests. 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 4.5.0</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 4a454dddb4..9a06630363 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -4900,6 +4900,11 @@
<optional>
<ref name="vmcoreinfo"/>
</optional>
+ <optional>
+ <element name="htm">
+ <ref name="featurestate"/>
+ </element>
+ </optional>
</interleave>
</element>
</optional>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 522e0c2bf3..9baca84c89 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -152,6 +152,7 @@ VIR_ENUM_IMPL(virDomainFeature, VIR_DOMAIN_FEATURE_LAST,
"ioapic",
"hpt",
"vmcoreinfo",
+ "htm",
);
VIR_ENUM_IMPL(virDomainCapabilitiesPolicy, VIR_DOMAIN_CAPABILITIES_POLICY_LAST,
@@ -19830,6 +19831,22 @@ virDomainDefParseXML(xmlDocPtr xml,
}
break;
+ case VIR_DOMAIN_FEATURE_HTM:
+ if (!(tmp = virXMLPropString(nodes[i], "state"))) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("missing state attribute '%s' of feature '%s'"),
+ tmp, virDomainFeatureTypeToString(val));
+ goto error;
+ }
+ if ((def->features[val] = virTristateSwitchTypeFromString(tmp)) < 0) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("unknown state attribute '%s' of feature '%s'"),
+ tmp, virDomainFeatureTypeToString(val));
+ goto error;
+ }
+ VIR_FREE(tmp);
+ break;
+
/* coverity[dead_error_begin] */
case VIR_DOMAIN_FEATURE_LAST:
break;
@@ -21964,6 +21981,7 @@ virDomainDefFeaturesCheckABIStability(virDomainDefPtr src,
case VIR_DOMAIN_FEATURE_VMPORT:
case VIR_DOMAIN_FEATURE_SMM:
case VIR_DOMAIN_FEATURE_VMCOREINFO:
+ case VIR_DOMAIN_FEATURE_HTM:
if (src->features[i] != dst->features[i]) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("State of feature '%s' differs: "
@@ -27622,6 +27640,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
case VIR_DOMAIN_FEATURE_PMU:
case VIR_DOMAIN_FEATURE_PVSPINLOCK:
case VIR_DOMAIN_FEATURE_VMPORT:
+ case VIR_DOMAIN_FEATURE_HTM:
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 6344c02d1c..e697fd0f26 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1771,6 +1771,7 @@ typedef enum {
VIR_DOMAIN_FEATURE_IOAPIC,
VIR_DOMAIN_FEATURE_HPT,
VIR_DOMAIN_FEATURE_VMCOREINFO,
+ VIR_DOMAIN_FEATURE_HTM,
VIR_DOMAIN_FEATURE_LAST
} virDomainFeature;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 20c6ac2a04..9a22baa3df 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -7278,6 +7278,26 @@ qemuBuildMachineCommandLine(virCommandPtr cmd,
virBufferAsprintf(&buf, ",resize-hpt=%s", str);
}
+ if (def->features[VIR_DOMAIN_FEATURE_HTM] != VIR_TRISTATE_SWITCH_ABSENT) {
+ const char *str;
+
+ if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACHINE_PSERIES_CAP_HTM)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("HTM configuration is not supported by this "
+ "QEMU binary"));
+ goto cleanup;
+ }
+
+ str = virTristateSwitchTypeToString(def->features[VIR_DOMAIN_FEATURE_HTM]);
+ if (!str) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("Invalid setting for HTM state"));
+ goto cleanup;
+ }
+
+ virBufferAsprintf(&buf, ",cap-htm=%s", str);
+ }
+
if (cpu && cpu->model &&
cpu->mode == VIR_CPU_MODE_HOST_MODEL &&
qemuDomainIsPSeries(def) &&
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 8a2d4750a5..5ea7e0f478 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -3827,6 +3827,19 @@ qemuDomainDefValidateFeatures(const virDomainDef *def,
}
break;
+ case VIR_DOMAIN_FEATURE_HTM:
+ if (def->features[i] != VIR_TRISTATE_SWITCH_ABSENT &&
+ !qemuDomainIsPSeries(def)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("The '%s' feature is not supported for "
+ "architecture '%s' or machine type '%s'"),
+ featureName,
+ virArchToString(def->os.arch),
+ def->os.machine);
+ return -1;
+ }
+ break;
+
case VIR_DOMAIN_FEATURE_ACPI:
case VIR_DOMAIN_FEATURE_APIC:
case VIR_DOMAIN_FEATURE_PAE:
diff --git a/tests/qemuxml2argvdata/pseries-features.args b/tests/qemuxml2argvdata/pseries-features.args
index f5c1959cca..6616fade93 100644
--- a/tests/qemuxml2argvdata/pseries-features.args
+++ b/tests/qemuxml2argvdata/pseries-features.args
@@ -7,7 +7,8 @@ QEMU_AUDIO_DRV=none \
/usr/bin/qemu-system-ppc64 \
-name guest \
-S \
--machine pseries,accel=tcg,usb=off,dump-guest-core=off,resize-hpt=required \
+-machine pseries,accel=tcg,usb=off,dump-guest-core=off,resize-hpt=required,\
+cap-htm=on \
-m 512 \
-smp 1,sockets=1,cores=1,threads=1 \
-uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
diff --git a/tests/qemuxml2argvdata/pseries-features.xml b/tests/qemuxml2argvdata/pseries-features.xml
index 5dd0dbd0be..a0e98db8b2 100644
--- a/tests/qemuxml2argvdata/pseries-features.xml
+++ b/tests/qemuxml2argvdata/pseries-features.xml
@@ -10,6 +10,7 @@
</os>
<features>
<hpt resizing='required'/>
+ <htm state='on'/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index a9a493e308..95e9b67d90 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1849,6 +1849,7 @@ mymain(void)
DO_TEST("pseries-features",
QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE,
+ QEMU_CAPS_MACHINE_PSERIES_CAP_HTM,
QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT);
DO_TEST_FAILURE("pseries-features",
QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE);
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 4449954ad4..609ea8d5de 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -619,6 +619,7 @@ mymain(void)
DO_TEST("pseries-features",
QEMU_CAPS_DEVICE_SPAPR_PCI_HOST_BRIDGE,
+ QEMU_CAPS_MACHINE_PSERIES_CAP_HTM,
QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT);
DO_TEST("pseries-serial-native",
--
2.17.1
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