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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2015-05-24 17:22:38 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-05-28 10:43:37 +0200 |
| commit | e453aa0f7e7b10135d7a84742722f5fc799a3df9 (patch) | |
| tree | 0f5e1e9d0fdfb5e2935fab2f0e9215a7753915af | |
| parent | KVM: x86: preserve x2APIC LDR on INIT (diff) | |
| download | linux-e453aa0f7e7b10135d7a84742722f5fc799a3df9.tar.xz linux-e453aa0f7e7b10135d7a84742722f5fc799a3df9.zip | |
KVM: x86: Allow ARAT CPU feature
There is no reason to deny this feature to guests. We are emulating the
APIC timer, thus are exposing it without stops in power-saving states.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/kvm/cpuid.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 92a74a0428aa..9dadf8d67873 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -415,6 +415,12 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, } break; } + case 6: /* Thermal management */ + entry->eax = 0x4; /* allow ARAT */ + entry->ebx = 0; + entry->ecx = 0; + entry->edx = 0; + break; case 7: { entry->flags |= KVM_CPUID_FLAG_SIGNIFCANT_INDEX; /* Mask ebx against host capability word 9 */ @@ -591,7 +597,6 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, break; case 3: /* Processor serial number */ case 5: /* MONITOR/MWAIT */ - case 6: /* Thermal management */ case 0xC0000002: case 0xC0000003: case 0xC0000004: |