[Qemu-devel] [PATCH] qemu-kvm: Enable xsave related CPUID

[Sheng Yang]

Signed-off-by: Sheng Yang <address@hidden>
---
 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