Re: [libvirt] [PATCHv2 8/8] qemu: process: Validate specific CPUID flags of a guest

+static bool +qemuProcessVerifyGuestCPU(virQEMUDriverPtr driver, virDomainObjPtr vm) +{ + virDomainDefPtr def = vm->def; + virArch arch = def->os.arch; + virCPUDataPtr guestcpu = NULL; + qemuDomainObjPrivatePtr priv = vm->privateData; + bool ret = false; + int rc; + + qemuDomainObjEnterMonitor(driver, vm); + rc = qemuMonitorGetGuestCPU(priv->mon, arch, &guestcpu); + qemuDomainObjExitMonitor(driver, vm); + + if (rc < 0) { + if (rc == -2) { + virResetLastError(); + return true; + } + + goto cleanup; + } + + switch (arch) { + case VIR_ARCH_I686: + case VIR_ARCH_X86_64: + if (def->features[VIR_DOMAIN_FEATURE_PVSPINLOCK] == VIR_DOMAIN_FEATURE_STATE_ON) { + if (!cpuHasFeature(guestcpu, VIR_CPU_x86_KVM_PV_UNHALT)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("host doesn't support paravirtual spinlocks")); + goto cleanup; + } + } + break; + + default: + break; + }