[PATCH] KVM: X86: Expose KVM_HINTS_REALTIME in KVM_GET_SUPPORTED_CPUID

[Wanpeng Li]

From: Wanpeng Li <wanpengli@xxxxxxxxxxx>

Per KVM_GET_SUPPORTED_CPUID ioctl documentation:

This ioctl returns x86 cpuid features which are supported by both the 
hardware and kvm in its default configuration.

A well-behaved userspace should not set the bit if it is not supported.

Suggested-by: Jim Mattson <jmattson@xxxxxxxxxx>
Signed-off-by: Wanpeng Li <wanpengli@xxxxxxxxxxx>
---
 arch/x86/kvm/cpuid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 06a278b..225d251 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -789,7 +789,7 @@ static inline int __do_cpuid_func(struct kvm_cpuid_array *array, u32 function)
 
 		entry->ebx = 0;
 		entry->ecx = 0;
-		entry->edx = 0;
+		entry->edx = (1 << KVM_HINTS_REALTIME);
 		break;
 	case 0x80000000:
 		entry->eax = min(entry->eax, 0x8000001f);
-- 
2.7.4