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Diffstat (limited to 'arch/x86/kvm/cpuid.c')
-rw-r--r--arch/x86/kvm/cpuid.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index f47a104a749c..38a0afe83c6b 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