This field will contain the feature bits that were filtered out because
of missing host support.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
/*< public >*/
CPUX86State env;
+
+ /* Features that were filtered out because of missing host capabilities */
+ uint32_t filtered_features[FEATURE_WORDS];
} X86CPU;
static inline X86CPU *x86_env_get_cpu(CPUX86State *env)
for (w = 0; w < FEATURE_WORDS; w++) {
FeatureWordInfo *wi = &feature_word_info[w];
- env->features[w] &= kvm_arch_get_supported_cpuid(s, wi->cpuid_eax,
- wi->cpuid_ecx,
- wi->cpuid_reg);
+ uint32_t host_feat = kvm_arch_get_supported_cpuid(s, wi->cpuid_eax,
+ wi->cpuid_ecx,
+ wi->cpuid_reg);
+ uint32_t requested_features = env->features[w];
+ env->features[w] &= host_feat;
+ cpu->filtered_features[w] = requested_features & ~env->features[w];
}
}
#endif