[libvirt] [PATCH RFCv2 1/4] qemu: Implement the HTM pSeries feature
Andrea Bolognani
abologna at redhat.com
Tue Feb 6 16:54:56 UTC 2018
This is the first in a list of pSeries-specific optional features
that have recently been introduced in QEMU. Along with the feature
proper, some generic code that will make it easier to implement
subsequent features is introduced as well.
Signed-off-by: Andrea Bolognani <abologna at redhat.com>
---
docs/schemas/domaincommon.rng | 5 +
src/conf/domain_conf.c | 19 +++
src/conf/domain_conf.h | 1 +
src/qemu/qemu_capabilities.c | 9 ++
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_command.c | 142 +++++++++++++++++++++
src/qemu/qemu_domain.c | 10 ++
tests/qemuxml2argvdata/pseries-features-htm.args | 19 +++
tests/qemuxml2argvdata/pseries-features-htm.xml | 28 ++++
.../pseries-features-invalid-machine.xml | 1 +
tests/qemuxml2argvtest.c | 5 +
tests/qemuxml2xmloutdata/pseries-features-htm.xml | 1 +
tests/qemuxml2xmltest.c | 3 +
13 files changed, 244 insertions(+)
create mode 100644 tests/qemuxml2argvdata/pseries-features-htm.args
create mode 100644 tests/qemuxml2argvdata/pseries-features-htm.xml
create mode 120000 tests/qemuxml2xmloutdata/pseries-features-htm.xml
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index ee6f83c96..262f83ad7 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -4797,6 +4797,11 @@
<optional>
<ref name="hpt"/>
</optional>
+ <optional>
+ <element name="htm">
+ <ref name="featurestate"/>
+ </element>
+ </optional>
<optional>
<ref name="vmcoreinfo"/>
</optional>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index c1d549594..ea3930c5d 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,
@@ -19251,6 +19252,22 @@ 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;
@@ -21338,6 +21355,7 @@ 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: "
@@ -26803,6 +26821,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
case VIR_DOMAIN_FEATURE_PVSPINLOCK:
case VIR_DOMAIN_FEATURE_VMPORT:
case VIR_DOMAIN_FEATURE_SMM:
+ 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 4e9044ae6..3a1fa1522 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1741,6 +1741,7 @@ 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_capabilities.c b/src/qemu/qemu_capabilities.c
index b5eb8cf46..c3b1f748a 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -459,6 +459,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
"pl011",
"machine.pseries.max-cpu-compat",
"dump-completed",
+ "machine.pseries.cap-htm",
);
@@ -4896,6 +4897,14 @@ virQEMUCapsInitQMPMonitor(virQEMUCapsPtr qemuCaps,
virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_PSERIES_MAX_CPU_COMPAT);
}
+ /* No way to query cap-* availability... Yet. See
+ * http://lists.nongnu.org/archive/html/qemu-devel/2018-01/msg04674.html
+ * for an attempt at making this introspectable through QMP */
+ if (qemuCaps->version >= 2012000 &&
+ ARCH_IS_PPC64(qemuCaps->arch)) {
+ virQEMUCapsSet(qemuCaps, QEMU_CAPS_MACHINE_PSERIES_CAP_HTM);
+ }
+
if (virQEMUCapsProbeQMPCommands(qemuCaps, mon) < 0)
goto cleanup;
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index c2ec2be19..5d9b67177 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -444,6 +444,7 @@ typedef enum {
QEMU_CAPS_DEVICE_PL011, /* -device pl011 (not user-instantiable) */
QEMU_CAPS_MACHINE_PSERIES_MAX_CPU_COMPAT, /* -machine pseries,max-cpu-compat= */
QEMU_CAPS_DUMP_COMPLETED, /* DUMP_COMPLETED event */
+ QEMU_CAPS_MACHINE_PSERIES_CAP_HTM, /* -machine pseries,cap-htm= */
QEMU_CAPS_LAST /* this must always be the last item */
} virQEMUCapsFlags;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index faf09a599..877482853 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -7060,6 +7060,113 @@ qemuBuildNameCommandLine(virCommandPtr cmd,
return 0;
}
+static int
+virDomainFeatureToQEMUCaps(int feature)
+{
+ switch ((virDomainFeature) feature) {
+ case VIR_DOMAIN_FEATURE_HTM:
+ return QEMU_CAPS_MACHINE_PSERIES_CAP_HTM;
+ case VIR_DOMAIN_FEATURE_ACPI:
+ case VIR_DOMAIN_FEATURE_APIC:
+ case VIR_DOMAIN_FEATURE_PAE:
+ case VIR_DOMAIN_FEATURE_HAP:
+ case VIR_DOMAIN_FEATURE_VIRIDIAN:
+ case VIR_DOMAIN_FEATURE_PRIVNET:
+ case VIR_DOMAIN_FEATURE_HYPERV:
+ case VIR_DOMAIN_FEATURE_KVM:
+ case VIR_DOMAIN_FEATURE_PVSPINLOCK:
+ case VIR_DOMAIN_FEATURE_CAPABILITIES:
+ case VIR_DOMAIN_FEATURE_PMU:
+ case VIR_DOMAIN_FEATURE_VMPORT:
+ case VIR_DOMAIN_FEATURE_GIC:
+ case VIR_DOMAIN_FEATURE_SMM:
+ case VIR_DOMAIN_FEATURE_IOAPIC:
+ case VIR_DOMAIN_FEATURE_HPT:
+ case VIR_DOMAIN_FEATURE_VMCOREINFO:
+ case VIR_DOMAIN_FEATURE_LAST:
+ break;
+ }
+
+ return -1;
+}
+
+static const char*
+virDomainFeatureToMachineOption(int feature)
+{
+ switch ((virDomainFeature) feature) {
+ case VIR_DOMAIN_FEATURE_HTM:
+ return "cap-htm";
+ case VIR_DOMAIN_FEATURE_ACPI:
+ case VIR_DOMAIN_FEATURE_APIC:
+ case VIR_DOMAIN_FEATURE_PAE:
+ case VIR_DOMAIN_FEATURE_HAP:
+ case VIR_DOMAIN_FEATURE_VIRIDIAN:
+ case VIR_DOMAIN_FEATURE_PRIVNET:
+ case VIR_DOMAIN_FEATURE_HYPERV:
+ case VIR_DOMAIN_FEATURE_KVM:
+ case VIR_DOMAIN_FEATURE_PVSPINLOCK:
+ case VIR_DOMAIN_FEATURE_CAPABILITIES:
+ case VIR_DOMAIN_FEATURE_PMU:
+ case VIR_DOMAIN_FEATURE_VMPORT:
+ case VIR_DOMAIN_FEATURE_GIC:
+ case VIR_DOMAIN_FEATURE_SMM:
+ case VIR_DOMAIN_FEATURE_IOAPIC:
+ case VIR_DOMAIN_FEATURE_HPT:
+ case VIR_DOMAIN_FEATURE_VMCOREINFO:
+ case VIR_DOMAIN_FEATURE_LAST:
+ break;
+ }
+
+ return NULL;
+}
+
+static int
+qemuBuildMachineCommandLineFeature(virBufferPtr buf,
+ virDomainFeature feature,
+ const char *value,
+ virQEMUCapsPtr qemuCaps)
+{
+ const char *name = virDomainFeatureTypeToString(feature);
+ const char *option = virDomainFeatureToMachineOption(feature);
+ int cap;
+ int ret = -1;
+
+ if (!option) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("Unknown QEMU option for '%s' feature"),
+ name);
+ goto cleanup;
+ }
+
+ if (!value) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("Invalid value for '%s' feature"),
+ name);
+ goto cleanup;
+ }
+
+ if ((cap = virDomainFeatureToQEMUCaps(feature)) < 0) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("Unknown QEMU capability for '%s' feature"),
+ name);
+ goto cleanup;
+ }
+
+ if (!virQEMUCapsGet(qemuCaps, cap)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("'%s' feature not supported by this QEMU binary"),
+ name);
+ goto cleanup;
+ }
+
+ virBufferAsprintf(buf, ",%s=%s", option, value);
+
+ ret = 0;
+
+ cleanup:
+ return ret;
+}
+
static int
qemuBuildMachineCommandLine(virCommandPtr cmd,
virQEMUDriverConfigPtr cfg,
@@ -7286,6 +7393,41 @@ qemuBuildMachineCommandLine(virCommandPtr cmd,
virBufferAsprintf(&buf, ",resize-hpt=%s", str);
}
+ for (i = 0; i < VIR_DOMAIN_FEATURE_LAST; i++) {
+ const char *value;
+
+ switch ((virDomainFeature) i) {
+ case VIR_DOMAIN_FEATURE_HTM:
+ if (def->features[i] == VIR_TRISTATE_SWITCH_ABSENT)
+ break;
+
+ value = virTristateSwitchTypeToString(def->features[i]);
+ if (qemuBuildMachineCommandLineFeature(&buf, i, value, qemuCaps) < 0)
+ goto cleanup;
+ break;
+
+ case VIR_DOMAIN_FEATURE_ACPI:
+ case VIR_DOMAIN_FEATURE_APIC:
+ case VIR_DOMAIN_FEATURE_PAE:
+ case VIR_DOMAIN_FEATURE_HAP:
+ case VIR_DOMAIN_FEATURE_VIRIDIAN:
+ case VIR_DOMAIN_FEATURE_PRIVNET:
+ case VIR_DOMAIN_FEATURE_HYPERV:
+ case VIR_DOMAIN_FEATURE_KVM:
+ case VIR_DOMAIN_FEATURE_PVSPINLOCK:
+ case VIR_DOMAIN_FEATURE_CAPABILITIES:
+ case VIR_DOMAIN_FEATURE_PMU:
+ case VIR_DOMAIN_FEATURE_VMPORT:
+ case VIR_DOMAIN_FEATURE_GIC:
+ case VIR_DOMAIN_FEATURE_SMM:
+ case VIR_DOMAIN_FEATURE_IOAPIC:
+ case VIR_DOMAIN_FEATURE_HPT:
+ case VIR_DOMAIN_FEATURE_VMCOREINFO:
+ case VIR_DOMAIN_FEATURE_LAST:
+ break;
+ }
+ }
+
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 5d21d3703..906d64894 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -3263,6 +3263,16 @@ 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 only supported for %s guests"),
+ featureName, "pSeries");
+ 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-htm.args b/tests/qemuxml2argvdata/pseries-features-htm.args
new file mode 100644
index 000000000..64fd28ed2
--- /dev/null
+++ b/tests/qemuxml2argvdata/pseries-features-htm.args
@@ -0,0 +1,19 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-ppc64 \
+-name guest \
+-S \
+-machine pseries,accel=tcg,cap-htm=on \
+-m 512 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
+-nographic \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-guest/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=readline \
+-boot c
diff --git a/tests/qemuxml2argvdata/pseries-features-htm.xml b/tests/qemuxml2argvdata/pseries-features-htm.xml
new file mode 100644
index 000000000..c47d42fe1
--- /dev/null
+++ b/tests/qemuxml2argvdata/pseries-features-htm.xml
@@ -0,0 +1,28 @@
+<domain type='qemu'>
+ <name>guest</name>
+ <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+ <memory unit='KiB'>524288</memory>
+ <currentMemory unit='KiB'>524288</currentMemory>
+ <vcpu placement='static'>1</vcpu>
+ <os>
+ <type arch='ppc64' machine='pseries'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <features>
+ <htm state='on'/>
+ </features>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-ppc64</emulator>
+ <controller type='usb' index='0' model='none'/>
+ <controller type='pci' index='0' model='pci-root'>
+ <model name='spapr-pci-host-bridge'/>
+ <target index='0'/>
+ </controller>
+ <memballoon model='none'/>
+ <panic model='pseries'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/pseries-features-invalid-machine.xml b/tests/qemuxml2argvdata/pseries-features-invalid-machine.xml
index 5a6bb02d5..76cbf0737 100644
--- a/tests/qemuxml2argvdata/pseries-features-invalid-machine.xml
+++ b/tests/qemuxml2argvdata/pseries-features-invalid-machine.xml
@@ -9,6 +9,7 @@
<features>
<!-- pSeries features can't be enabled for non-pSeries guests -->
<hpt resizing='enabled'/>
+ <htm state='on'/>
</features>
<devices>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 3aa69fcee..085e3a126 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1896,6 +1896,11 @@ mymain(void)
QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT);
DO_TEST_FAILURE("pseries-features-hpt",
QEMU_CAPS_MACHINE_OPT);
+ DO_TEST("pseries-features-htm",
+ QEMU_CAPS_MACHINE_OPT,
+ QEMU_CAPS_MACHINE_PSERIES_CAP_HTM);
+ DO_TEST_FAILURE("pseries-features-htm",
+ QEMU_CAPS_MACHINE_OPT);
DO_TEST_PARSE_ERROR("pseries-features-invalid-machine", NONE);
DO_TEST("pseries-serial-native",
diff --git a/tests/qemuxml2xmloutdata/pseries-features-htm.xml b/tests/qemuxml2xmloutdata/pseries-features-htm.xml
new file mode 120000
index 000000000..42cf0f7d7
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/pseries-features-htm.xml
@@ -0,0 +1 @@
+../qemuxml2argvdata/pseries-features-htm.xml
\ No newline at end of file
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 0eb9e6c77..a593a59e0 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -766,6 +766,9 @@ mymain(void)
DO_TEST("pseries-features-hpt",
QEMU_CAPS_MACHINE_OPT,
QEMU_CAPS_MACHINE_PSERIES_RESIZE_HPT);
+ DO_TEST("pseries-features-htm",
+ QEMU_CAPS_MACHINE_OPT,
+ QEMU_CAPS_MACHINE_PSERIES_CAP_HTM);
DO_TEST("pseries-serial-native",
QEMU_CAPS_NODEFCONFIG,
--
2.14.3
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