diff options
| author | Eduardo Habkost <ehabkost@redhat.com> | 2014-04-30 13:48:38 -0300 |
|---|---|---|
| committer | Andreas Färber <afaerber@suse.de> | 2014-06-25 23:54:57 +0200 |
| commit | 37ce3522cb88c524caec57cb52a4bfbb880abbe5 (patch) | |
| tree | 5a84d8a0fcf405fdd6c1862260126110cb1c570c | |
| parent | e1c224b4eb3b8693c230bb2762a959ae1f531f76 (diff) | |
target-i386: Loop-based feature word filtering in TCG mode
Instead of manually filtering each feature word, add a tcg_features
field to FeatureWordInfo, and use that field to filter all feature words
in TCG mode.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
| -rw-r--r-- | target-i386/cpu.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/target-i386/cpu.c b/target-i386/cpu.c index d05b8ecb1b..3e1dad79d0 100644 --- a/target-i386/cpu.c +++ b/target-i386/cpu.c @@ -325,42 +325,51 @@ typedef struct FeatureWordInfo { bool cpuid_needs_ecx; /* CPUID instruction uses ECX as input */ uint32_t cpuid_ecx; /* Input ECX value for CPUID */ int cpuid_reg; /* output register (R_* constant) */ + uint32_t tcg_features; /* Feature flags supported by TCG */ } FeatureWordInfo; static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { [FEAT_1_EDX] = { .feat_names = feature_name, .cpuid_eax = 1, .cpuid_reg = R_EDX, + .tcg_features = TCG_FEATURES, }, [FEAT_1_ECX] = { .feat_names = ext_feature_name, .cpuid_eax = 1, .cpuid_reg = R_ECX, + .tcg_features = TCG_EXT_FEATURES, }, [FEAT_8000_0001_EDX] = { .feat_names = ext2_feature_name, .cpuid_eax = 0x80000001, .cpuid_reg = R_EDX, + .tcg_features = TCG_EXT2_FEATURES, }, [FEAT_8000_0001_ECX] = { .feat_names = ext3_feature_name, .cpuid_eax = 0x80000001, .cpuid_reg = R_ECX, + .tcg_features = TCG_EXT3_FEATURES, }, [FEAT_C000_0001_EDX] = { .feat_names = ext4_feature_name, .cpuid_eax = 0xC0000001, .cpuid_reg = R_EDX, + .tcg_features = TCG_EXT4_FEATURES, }, [FEAT_KVM] = { .feat_names = kvm_feature_name, .cpuid_eax = KVM_CPUID_FEATURES, .cpuid_reg = R_EAX, + .tcg_features = TCG_KVM_FEATURES, }, [FEAT_SVM] = { .feat_names = svm_feature_name, .cpuid_eax = 0x8000000A, .cpuid_reg = R_EDX, + .tcg_features = TCG_SVM_FEATURES, }, [FEAT_7_0_EBX] = { .feat_names = cpuid_7_0_ebx_feature_name, .cpuid_eax = 7, .cpuid_needs_ecx = true, .cpuid_ecx = 0, .cpuid_reg = R_EBX, + .tcg_features = TCG_7_0_EBX_FEATURES, }, }; @@ -2588,14 +2597,10 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp) } if (!kvm_enabled()) { - env->features[FEAT_1_EDX] &= TCG_FEATURES; - env->features[FEAT_1_ECX] &= TCG_EXT_FEATURES; - env->features[FEAT_7_0_EBX] &= TCG_7_0_EBX_FEATURES; - 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; + FeatureWord w; + for (w = 0; w < FEATURE_WORDS; w++) { + env->features[w] &= feature_word_info[w].tcg_features; + } } else { if (x86_cpu_filter_features(cpu) && cpu->enforce_cpuid) { error_setg(&local_err, |