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cpu_x86: Implement virCPUDataGetHost for x86

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Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Tim Wiederhake 2021-11-04 14:43:31 +01:00
parent 19b52d952b
commit 773e956c2f
1 changed files with 40 additions and 0 deletions
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40
src/cpu/cpu_x86.c
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@ -20,6 +20,9 @@
#include <config.h>
#if WITH_LINUX_KVM_H
# include <linux/kvm.h>
#endif
#include "virlog.h"
#include "viralloc.h"
@ -3408,6 +3411,38 @@ virCPUx86DataIsIdentical(const virCPUData *a,
return VIR_CPU_COMPARE_IDENTICAL;
}
#if WITH_LINUX_KVM_H && defined(KVM_GET_MSRS) && \
(defined(__i386__) || defined(__x86_64__)) && \
(defined(__linux__) || defined(__FreeBSD__))
static virCPUData *
virCPUx86DataGetHost(void)
{
size_t i;
virCPUData *cpuid;
g_autofree struct kvm_cpuid2 *kvm_cpuid = NULL;
if ((kvm_cpuid = virHostCPUGetCPUID()) == NULL)
return NULL;
cpuid = virCPUDataNew(virArchFromHost());
cpuid->data.x86.len = kvm_cpuid->nent;
cpuid->data.x86.items = g_new0(virCPUx86DataItem, kvm_cpuid->nent);
for (i = 0; i < kvm_cpuid->nent; ++i) {
virCPUx86DataItem *item = &cpuid->data.x86.items[i];
item->type = VIR_CPU_X86_DATA_CPUID;
item->data.cpuid.eax_in = kvm_cpuid->entries[i].function;
item->data.cpuid.ecx_in = kvm_cpuid->entries[i].index;
item->data.cpuid.eax = kvm_cpuid->entries[i].eax;
item->data.cpuid.ebx = kvm_cpuid->entries[i].ebx;
item->data.cpuid.ecx = kvm_cpuid->entries[i].ecx;
item->data.cpuid.edx = kvm_cpuid->entries[i].edx;
}
return cpuid;
}
#endif
static bool
virCPUx86FeatureIsMSR(const char *name)
{
@ -3493,4 +3528,9 @@ struct cpuArchDriver cpuDriverX86 = {
.validateFeatures = virCPUx86ValidateFeatures,
.dataAddFeature = virCPUx86DataAddFeature,
.dataIsIdentical = virCPUx86DataIsIdentical,
#if WITH_LINUX_KVM_H && defined(KVM_GET_MSRS) && \
(defined(__i386__) || defined(__x86_64__)) && \
(defined(__linux__) || defined(__FreeBSD__))
.dataGetHost = virCPUx86DataGetHost,
#endif
};