[PATCH] KVM: x86: Pass host's CPUID.16H through to KVM_GET_SUPPORTED_CPUID

[Jim Mattson <jmattson@google.com>]

In the default configuration, the guest TSC frequency is the same as
the host TSC frequency. Similarly, the maximum frequency of the
virtual CPU is the same as the maximum frequency of the physical
CPU. Also, the bus (reference) frequency of the virtual CPU matches
that of the physical CPU.

Pass this information directly from host CPUID.16H to guest CPUID.16H
in KVM_GET_SUPPORTED_CPUID.

Signed-off-by: Jim Mattson <jmattson@google.com>
---
 arch/x86/kvm/cpuid.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 675eb9ae3948..1527f467d4f8 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -1043,6 +1043,9 @@ static inline int __do_cpuid_func(struct kvm_cpuid_array *array, u32 function)
 				goto out;
 		}
 		break;
+	/* Processor Frequency Information */
+	case 0x16:
+		break;
 	/* Intel AMX TILE */
 	case 0x1d:
 		if (!kvm_cpu_cap_has(X86_FEATURE_AMX_TILE)) {
-- 
2.37.3.998.g577e59143f-goog