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[Qemu-devel] [PATCH 2/4] qemu: Enable XSAVE related CPUID
From: |
Sheng Yang |
Subject: |
[Qemu-devel] [PATCH 2/4] qemu: Enable XSAVE related CPUID |
Date: |
Thu, 17 Jun 2010 15:18:14 +0800 |
We can support it in KVM now. The 0xd leaf is queried from KVM.
Signed-off-by: Sheng Yang <address@hidden>
---
target-i386/cpuid.c | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/target-i386/cpuid.c b/target-i386/cpuid.c
index 99d1f44..ab6536b 100644
--- a/target-i386/cpuid.c
+++ b/target-i386/cpuid.c
@@ -1067,6 +1067,27 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index,
uint32_t count,
*ecx = 0;
*edx = 0;
break;
+ case 0xD:
+ /* Processor Extended State */
+ if (!(env->cpuid_ext_features & CPUID_EXT_XSAVE)) {
+ *eax = 0;
+ *ebx = 0;
+ *ecx = 0;
+ *edx = 0;
+ break;
+ }
+ if (kvm_enabled()) {
+ *eax = kvm_arch_get_supported_cpuid(env, 0xd, count, R_EAX);
+ *ebx = kvm_arch_get_supported_cpuid(env, 0xd, count, R_EBX);
+ *ecx = kvm_arch_get_supported_cpuid(env, 0xd, count, R_ECX);
+ *edx = kvm_arch_get_supported_cpuid(env, 0xd, count, R_EDX);
+ } else {
+ *eax = 0;
+ *ebx = 0;
+ *ecx = 0;
+ *edx = 0;
+ }
+ break;
case 0x80000000:
*eax = env->cpuid_xlevel;
*ebx = env->cpuid_vendor1;
--
1.7.0.1
[Qemu-devel] [PATCH 3/4] qemu: kvm: Enable XSAVE live migration support, Sheng Yang, 2010/06/17