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target-i386: Enable LMCE for '-cpu host' if supported by host 

If -cpu host is used, LMCE will be automatically enabled when it's
supported by host.

Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Haozhong Zhang 2016-06-22 14:56:23 +08:00 committed by Eduardo Habkost
parent 217f1b4a72
commit 40bfe48f1c
1 changed files with 15 additions and 0 deletions
target-i386
cpu.c

15
target-i386/cpu.c
View File

@ -1547,6 +1547,17 @@ static uint32_t x86_cpu_get_supported_feature_word(FeatureWord w,
#ifdef CONFIG_KVM
static bool lmce_supported(void)
{
uint64_t mce_cap;
if (kvm_ioctl(kvm_state, KVM_X86_GET_MCE_CAP_SUPPORTED, &mce_cap) < 0) {
return false;
}
return !!(mce_cap & MCG_LMCE_P);
}
static int cpu_x86_fill_model_id(char *str)
{
uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
@ -1619,6 +1630,10 @@ static void host_x86_cpu_initfn(Object *obj)
env->cpuid_level = kvm_arch_get_supported_cpuid(s, 0x0, 0, R_EAX);
env->cpuid_xlevel = kvm_arch_get_supported_cpuid(s, 0x80000000, 0, R_EAX);
env->cpuid_xlevel2 = kvm_arch_get_supported_cpuid(s, 0xC0000000, 0, R_EAX);
if (lmce_supported()) {
object_property_set_bool(OBJECT(cpu), true, "lmce", &error_abort);
}
}
object_property_set_bool(OBJECT(cpu), true, "pmu", &error_abort);