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qemu: Implement virConnectBaselineHypervisorCPU

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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Collin Walling <walling@linux.ibm.com>
This commit is contained in:
Jiri Denemark 2018-05-11 13:33:19 +02:00
parent 4eebaa4ca3
commit 8de7650ef1
1 changed files with 91 additions and 0 deletions
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91
src/qemu/qemu_driver.c
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@ -13342,6 +13342,96 @@ qemuConnectBaselineCPU(virConnectPtr conn ATTRIBUTE_UNUSED,
}
static char *
qemuConnectBaselineHypervisorCPU(virConnectPtr conn,
const char *emulator,
const char *archStr,
const char *machine,
const char *virttypeStr,
const char **xmlCPUs,
unsigned int ncpus,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
virCPUDefPtr *cpus = NULL;
virQEMUCapsPtr qemuCaps = NULL;
virArch arch;
virDomainVirtType virttype;
virDomainCapsCPUModelsPtr cpuModels;
bool migratable;
virCPUDefPtr cpu = NULL;
char *cpustr = NULL;
char **features = NULL;
virCheckFlags(VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES |
VIR_CONNECT_BASELINE_CPU_MIGRATABLE, NULL);
if (virConnectBaselineHypervisorCPUEnsureACL(conn) < 0)
goto cleanup;
migratable = !!(flags & VIR_CONNECT_BASELINE_CPU_MIGRATABLE);
if (!(cpus = virCPUDefListParse(xmlCPUs, ncpus, VIR_CPU_TYPE_AUTO)))
goto cleanup;
qemuCaps = virQEMUCapsCacheLookupDefault(driver->qemuCapsCache,
emulator,
archStr,
virttypeStr,
machine,
&arch, &virttype, NULL);
if (!qemuCaps)
goto cleanup;
if (!(cpuModels = virQEMUCapsGetCPUDefinitions(qemuCaps, virttype)) ||
cpuModels->nmodels == 0) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("QEMU '%s' does not support any CPU models for "
"virttype '%s'"),
virQEMUCapsGetBinary(qemuCaps),
virDomainVirtTypeToString(virttype));
goto cleanup;
}
if (ARCH_IS_X86(arch)) {
int rc = virQEMUCapsGetCPUFeatures(qemuCaps, virttype,
migratable, &features);
if (rc < 0)
goto cleanup;
if (features && rc == 0) {
/* We got only migratable features from QEMU if we asked for them,
* no further filtering in virCPUBaseline is desired. */
migratable = false;
}
if (!(cpu = virCPUBaseline(arch, cpus, ncpus, cpuModels,
(const char **)features, migratable)))
goto cleanup;
} else {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("computing baseline hypervisor CPU is not supported "
"for arch %s"), virArchToString(arch));
goto cleanup;
}
cpu->fallback = VIR_CPU_FALLBACK_FORBID;
if ((flags & VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES) &&
virCPUExpandFeatures(arch, cpu) < 0)
goto cleanup;
cpustr = virCPUDefFormat(cpu, NULL);
cleanup:
virCPUDefListFree(cpus);
virCPUDefFree(cpu);
virObjectUnref(qemuCaps);
virStringListFree(features);
return cpustr;
}
static int
qemuDomainGetJobInfoMigrationStats(virQEMUDriverPtr driver,
virDomainObjPtr vm,
@ -21532,6 +21622,7 @@ static virHypervisorDriver qemuHypervisorDriver = {
.domainSetBlockThreshold = qemuDomainSetBlockThreshold, /* 3.2.0 */
.domainSetLifecycleAction = qemuDomainSetLifecycleAction, /* 3.9.0 */
.connectCompareHypervisorCPU = qemuConnectCompareHypervisorCPU, /* 4.4.0 */
.connectBaselineHypervisorCPU = qemuConnectBaselineHypervisorCPU, /* 4.4.0 */
};