[libvirt PATCH v2 17/20] cpu_x86: Implement virCPUDataGetHost for x86
Signed-off-by: Tim Wiederhake <twiederh(a)redhat.com>
---
src/cpu/cpu_x86.c | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c
index 0dc9a7d9fb..a72eae07dd 100644
--- a/src/cpu/cpu_x86.c
+++ b/src/cpu/cpu_x86.c
@@ -20,6 +20,9 @@
#include <config.h>
+#if WITH_LINUX_KVM_H
+# include <linux/kvm.h>
+#endif
#include "virlog.h"
#include "viralloc.h"
@@ -3417,6 +3420,38 @@ 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)
{
@@ -3502,4 +3537,9 @@ 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
};
--
2.31.1