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monitor/mwait workaround

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2045 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2006-07-10 19:53:43 +00:00
parent 3d7374c5da
commit 0de6bb73fd
1 changed files with 6 additions and 1 deletions
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7
kqemu.c
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@ -119,7 +119,7 @@ static int is_cpuid_supported(void)
static void kqemu_update_cpuid(CPUState *env)
{
int critical_features_mask, features;
int critical_features_mask, features, ext_features, ext_features_mask;
uint32_t eax, ebx, ecx, edx;
/* the following features are kept identical on the host and
@ -130,11 +130,14 @@ static void kqemu_update_cpuid(CPUState *env)
CPUID_CMOV | CPUID_CX8 |
CPUID_FXSR | CPUID_MMX | CPUID_SSE |
CPUID_SSE2 | CPUID_SEP;
ext_features_mask = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR;
if (!is_cpuid_supported()) {
features = 0;
ext_features = 0;
} else {
cpuid(1, eax, ebx, ecx, edx);
features = edx;
ext_features = ecx;
}
#ifdef __x86_64__
/* NOTE: on x86_64 CPUs, SYSENTER is not supported in
@ -144,6 +147,8 @@ static void kqemu_update_cpuid(CPUState *env)
#endif
env->cpuid_features = (env->cpuid_features & ~critical_features_mask) |
(features & critical_features_mask);
env->cpuid_ext_features = (env->cpuid_ext_features & ~ext_features_mask) |
(ext_features & ext_features_mask);
/* XXX: we could update more of the target CPUID state so that the
non accelerated code sees exactly the same CPU features as the
accelerated code */