Re: [Qemu-devel] [PATCH] enable architectural PMU cpuid leaf for kvm

[Gleb Natapov]

On Thu, Dec 15, 2011 at 09:09:32AM -0600, Anthony Liguori wrote:
> On 12/15/2011 04:44 AM, Gleb Natapov wrote:
> >
> >Signed-off-by: Gleb Natapov<address@hidden>
> 
> This should go in via uq/master.
uq/master maintainers can you take it?

> 
> Regards,
> 
> Anthony Liguori
> 
> >diff --git a/target-i386/cpuid.c b/target-i386/cpuid.c
> >index 0b3af90..91a104b 100644
> >--- a/target-i386/cpuid.c
> >+++ b/target-i386/cpuid.c
> >@@ -1180,10 +1180,19 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, 
> >uint32_t count,
> >          break;
> >      case 0xA:
> >          /* Architectural Performance Monitoring Leaf */
> >-        *eax = 0;
> >-        *ebx = 0;
> >-        *ecx = 0;
> >-        *edx = 0;
> >+        if (kvm_enabled()) {
> >+            KVMState *s = env->kvm_state;
> >+
> >+            *eax = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EAX);
> >+            *ebx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EBX);
> >+            *ecx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_ECX);
> >+            *edx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EDX);
> >+        } else {
> >+            *eax = 0;
> >+            *ebx = 0;
> >+            *ecx = 0;
> >+            *edx = 0;
> >+        }
> >          break;
> >      case 0xD:
> >          /* Processor Extended State */
> >--
> >                     Gleb.
> >
> >

--
                        Gleb.