From: Gleb Natapov <gleb@redhat.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [PATCH] enable architectural PMU cpuid leaf for kvm
Date: Thu, 15 Dec 2011 12:44:05 +0200 [thread overview]
Message-ID: <20111215104405.GD21664@redhat.com> (raw)
Signed-off-by: Gleb Natapov <gleb@redhat.com>
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.
next reply other threads:[~2011-12-15 10:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-15 10:44 Gleb Natapov [this message]
2011-12-15 15:09 ` [Qemu-devel] [PATCH] enable architectural PMU cpuid leaf for kvm Anthony Liguori
2011-12-15 15:13 ` Gleb Natapov
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