Re: [libvirt] [Qemu-devel] [PATCH qom-cpu 4/9] target-i386: Replace cpuid_*features fields with a feature word array

This replaces the feature-bit fields on both X86CPU and x86_def_t structs with an array. With this, we will be able to simplify code that simply does the same operation on all feature words (e.g. kvm_check_features_against_host(), filter_features_for_kvm(), add_flagname_to_bitmaps(), CPU feature-bit property lookup/registration, and the proposed "feature-words" property) The following field replacements were made on X86CPU and x86_def_t: (cpuid_)features -> features[FEAT_1_EDX] (cpuid_)ext_features -> features[FEAT_1_ECX] (cpuid_)ext2_features -> features[FEAT_8000_0001_EDX] (cpuid_)ext3_features -> features[FEAT_8000_0001_ECX] (cpuid_)ext4_features -> features[FEAT_C000_0001_EDX] (cpuid_)kvm_features -> features[FEAT_KVM] (cpuid_)svm_features -> features[FEAT_SVM] (cpuid_)7_0_ebx_features -> features[FEAT_7_0_EBX] Signed-off-by: Eduardo Habkost <ehabkost(a)redhat.com&gt; Reviewed-By: Igor Mammedov <imammedo(a)redhat.com&gt;

diff --git a/target-i386/cpu.c b/target-i386/cpu.c index 73ae2ef..110ef98 100644 --- a/target-i386/cpu.c +++ b/target-i386/cpu.c

@@ -1490,22 +1485,22 @@ static void cpu_x86_parse_featurestr(X86CPU *cpu, char *features, Error **errp) } featurestr = strtok(NULL, ","); } - env->cpuid_features |= plus_features[FEAT_1_EDX]; - env->cpuid_ext_features |= plus_features[FEAT_1_ECX]; - env->cpuid_ext2_features |= plus_features[FEAT_8000_0001_EDX]; - env->cpuid_ext3_features |= plus_features[FEAT_8000_0001_ECX]; - env->cpuid_ext4_features |= plus_features[FEAT_C000_0001_EDX]; - env->cpuid_kvm_features |= plus_features[FEAT_KVM]; - env->cpuid_svm_features |= plus_features[FEAT_SVM]; - env->cpuid_7_0_ebx_features |= plus_features[FEAT_7_0_EBX]; - env->cpuid_features &= ~minus_features[FEAT_1_EDX]; - env->cpuid_ext_features &= ~minus_features[FEAT_1_ECX]; - env->cpuid_ext2_features &= ~minus_features[FEAT_8000_0001_EDX]; - env->cpuid_ext3_features &= ~minus_features[FEAT_8000_0001_ECX]; - env->cpuid_ext4_features &= ~minus_features[FEAT_C000_0001_EDX]; - env->cpuid_kvm_features &= ~minus_features[FEAT_KVM]; - env->cpuid_svm_features &= ~minus_features[FEAT_SVM]; - env->cpuid_7_0_ebx_features &= ~minus_features[FEAT_7_0_EBX]; + env->features[FEAT_1_EDX] |= plus_features[FEAT_1_EDX]; + env->features[FEAT_1_ECX] |= plus_features[FEAT_1_ECX]; + env->features[FEAT_8000_0001_EDX] |= plus_features[FEAT_8000_0001_EDX]; + env->features[FEAT_8000_0001_ECX] |= plus_features[FEAT_8000_0001_ECX]; + env->features[FEAT_C000_0001_EDX] |= plus_features[FEAT_C000_0001_EDX]; + env->features[FEAT_KVM] |= plus_features[FEAT_KVM]; + env->features[FEAT_SVM] |= plus_features[FEAT_SVM]; + env->features[FEAT_7_0_EBX] |= plus_features[FEAT_7_0_EBX]; + env->features[FEAT_1_EDX] &= ~minus_features[FEAT_1_EDX]; + env->features[FEAT_1_ECX] &= ~minus_features[FEAT_1_ECX]; + env->features[FEAT_8000_0001_EDX] &= ~minus_features[FEAT_8000_0001_EDX]; + env->features[FEAT_8000_0001_ECX] &= ~minus_features[FEAT_8000_0001_ECX]; + env->features[FEAT_C000_0001_EDX] &= ~minus_features[FEAT_C000_0001_EDX]; + env->features[FEAT_KVM] &= ~minus_features[FEAT_KVM]; + env->features[FEAT_SVM] &= ~minus_features[FEAT_SVM]; + env->features[FEAT_7_0_EBX] &= ~minus_features[FEAT_7_0_EBX]; out: return;

@@ -1630,24 +1625,24 @@ static void cpu_x86_register(X86CPU *cpu, const char *name, Error **errp) } if (kvm_enabled()) { - def->kvm_features |= kvm_default_features; + def->features[FEAT_KVM] |= kvm_default_features; } - def->ext_features |= CPUID_EXT_HYPERVISOR; + def->features[FEAT_1_ECX] |= CPUID_EXT_HYPERVISOR; object_property_set_str(OBJECT(cpu), def->vendor, "vendor", errp); object_property_set_int(OBJECT(cpu), def->level, "level", errp); object_property_set_int(OBJECT(cpu), def->family, "family", errp); object_property_set_int(OBJECT(cpu), def->model, "model", errp); object_property_set_int(OBJECT(cpu), def->stepping, "stepping", errp); - env->cpuid_features = def->features; - env->cpuid_ext_features = def->ext_features; - env->cpuid_ext2_features = def->ext2_features; - env->cpuid_ext3_features = def->ext3_features; + env->features[FEAT_1_EDX] = def->features[FEAT_1_EDX]; + env->features[FEAT_1_ECX] = def->features[FEAT_1_ECX]; + env->features[FEAT_8000_0001_EDX] = def->features[FEAT_8000_0001_EDX]; + env->features[FEAT_8000_0001_ECX] = def->features[FEAT_8000_0001_ECX]; object_property_set_int(OBJECT(cpu), def->xlevel, "xlevel", errp); - env->cpuid_kvm_features = def->kvm_features; - env->cpuid_svm_features = def->svm_features; - env->cpuid_ext4_features = def->ext4_features; - env->cpuid_7_0_ebx_features = def->cpuid_7_0_ebx_features; + env->features[FEAT_KVM] = def->features[FEAT_KVM]; + env->features[FEAT_SVM] = def->features[FEAT_SVM]; + env->features[FEAT_C000_0001_EDX] = def->features[FEAT_C000_0001_EDX]; + env->features[FEAT_7_0_EBX] = def->features[FEAT_7_0_EBX]; env->cpuid_xlevel2 = def->xlevel2; object_property_set_str(OBJECT(cpu), def->model_id, "model-id", errp);