[PATCH 2/3] qemu: Enable XSAVE related CPUID

Sheng Yang
2010-06-10T03:34:05Z

We can support it in KVM now. The 0xd leaf is queried from KVM.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
---
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 fb78061..26e4054 100644
--- a/target-i386/cpuid.c
+++ b/target-i386/cpuid.c
@@ -1081,6 +1081,27 @@ 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