[PATCH] qemu-kvm: Enable xsave related CPUID

Sheng Yang
2010-05-19T08:37:42Z

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
---
target-i386/cpuid.c | 32 ++++++++++++++++++++++++++++++++
1 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/target-i386/cpuid.c b/target-i386/cpuid.c
index eebf038..21e94f3 100644
--- a/target-i386/cpuid.c
+++ b/target-i386/cpuid.c
@@ -1067,6 +1067,38 @@ 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 (count == 0) {
+ *eax = 0x7;
+ *ebx = 0x340;
+ *ecx = 0x340;
+ *edx = 0;
+ } else if (count == 1) {
+ /* eax = 1, so we can continue with others */
+ *eax = 1;
+ *ebx = 0;
+ *ecx = 0;
+ *edx = 0;
+ } else if (count == 2) {
+ *eax = 0x100;
+ *ebx = 0x240;
+ *ecx = 0;
+ *edx = 0;
+ } else {
+ *eax = 0;
+ *ebx = 0;
+ *ecx = 0;
+ *edx = 0;
+ }
+ break;
case 0x80000000:
*eax = env->cpuid_xlevel;
*ebx = env->cpuid_vendor1;
--
1.7.0.1