From 0de6bb73fd213db5a9d703e10c284c5c0321d82e Mon Sep 17 00:00:00 2001
From: bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Mon, 10 Jul 2006 19:53:43 +0000
Subject: [PATCH] monitor/mwait workaround
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2045 c046a42c-6fe2-441c-8c8c-71466251a162
---
kqemu.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/kqemu.c b/kqemu.c
index 61983d01de1..b7a93b0be6d 100644
--- a/kqemu.c
+++ b/kqemu.c
@@ -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 */
--
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