diff options
Diffstat (limited to 'arch/x86/kvm/cpuid.c')
| -rw-r--r-- | arch/x86/kvm/cpuid.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index f47a104a749..38a0afe83c6 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -283,6 +283,8 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, 0 /* Reserved */ | f_lm | F(3DNOWEXT) | F(3DNOW); /* cpuid 1.ecx */ const u32 kvm_supported_word4_x86_features = + /* NOTE: MONITOR (and MWAIT) are emulated as NOP, + * but *not* advertised to guests via CPUID ! */ F(XMM3) | F(PCLMULQDQ) | 0 /* DTES64, MONITOR */ | 0 /* DS-CPL, VMX, SMX, EST */ | 0 /* TM2 */ | F(SSSE3) | 0 /* CNXT-ID */ | 0 /* Reserved */ | @@ -495,6 +497,13 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, entry->ecx &= kvm_supported_word6_x86_features; cpuid_mask(&entry->ecx, 6); break; + case 0x80000007: /* Advanced power management */ + /* invariant TSC is CPUID.80000007H:EDX[8] */ + entry->edx &= (1 << 8); + /* mask against host */ + entry->edx &= boot_cpu_data.x86_power; + entry->eax = entry->ebx = entry->ecx = 0; + break; case 0x80000008: { unsigned g_phys_as = (entry->eax >> 16) & 0xff; unsigned virt_as = max((entry->eax >> 8) & 0xff, 48U); @@ -525,7 +534,6 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, case 3: /* Processor serial number */ case 5: /* MONITOR/MWAIT */ case 6: /* Thermal management */ - case 0x80000007: /* Advanced power management */ case 0xC0000002: case 0xC0000003: case 0xC0000004: @@ -726,6 +734,7 @@ int cpuid_maxphyaddr(struct kvm_vcpu *vcpu) not_found: return 36; } +EXPORT_SYMBOL_GPL(cpuid_maxphyaddr); /* * If no match is found, check whether we exceed the vCPU's limit |