On 05/27/2010 12:50 PM, Sheng Yang wrote:
We can support it in KVM now. The initial values are the minimal requirement
of XSAVE capable processor.
Signed-off-by: Sheng Yang<sheng@xxxxxxxxxxxxxxx>
---
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..cbf5595 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; /* FP | SSE | YMM */
+ *ebx = 0x340; /* FP + SSE + YMM size */
+ *ecx = 0x340; /* FP + SSE + YMM size */
For -cpu host, we should pick these from KVM_GET_SUPPORTED_CPUID. For
canned cpu types (e.g. qemu64), we need to return what we always did.
We can also add a new cpu type that has them built in (there's no cpu on
the market with avx, right?)
+ *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; /* YMM size */
+ *ebx = 0x240; /* YMM offset */
+ *ecx = 0;
+ *edx = 0;
These, too.
+ } else {
+ *eax = 0;
+ *ebx = 0;
+ *ecx = 0;
+ *edx = 0;
+ }
+ break;
case 0x80000000:
*eax = env->cpuid_xlevel;
*ebx = env->cpuid_vendor1;
--
error compiling committee.c: too many arguments to function
--
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