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target-i386: Filter KVM and 0xC0000001 features on TCG 

TCG doesn't support any of the feature flags on FEAT_KVM and
FEAT_C000_0001_EDX feature words, so clear all bits on those feature
words.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Eduardo Habkost 2014-04-30 13:48:35 -03:00 committed by Andreas Färber
parent d0a70f46fa
commit 84a6c6cd40
1 changed files with 4 additions and 0 deletions
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4
target-i386/cpu.c
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@ -585,7 +585,9 @@ struct X86CPUDefinition {
TCG_EXT2_X86_64_FEATURES)
#define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \
CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A)
#define TCG_EXT4_FEATURES 0
#define TCG_SVM_FEATURES 0
#define TCG_KVM_FEATURES 0
#define TCG_7_0_EBX_FEATURES (CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_SMAP | \
CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ADX)
/* missing:
@ -2606,6 +2608,8 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
env->features[FEAT_8000_0001_EDX] &= TCG_EXT2_FEATURES;
env->features[FEAT_8000_0001_ECX] &= TCG_EXT3_FEATURES;
env->features[FEAT_SVM] &= TCG_SVM_FEATURES;
env->features[FEAT_KVM] &= TCG_KVM_FEATURES;
env->features[FEAT_C000_0001_EDX] &= TCG_EXT4_FEATURES;
} else {
if (x86_cpu_filter_features(cpu) && cpu->enforce_cpuid) {
error_setg(&local_err,