From: Eduardo Habkost <ehabk...@redhat.com> I have no idea why PPRO_FEATURES was being ignored on the check of the CPUID.80000001H.EDX bits. I believe it was a mistake, and it was supposed to be ~(PPRO_FEATURES & CPUID_EXT2_AMD_ALIASES) or just ~CPUID_EXT2_AMD_ALIASES, because some time ago kvm_cpu_fill_host() used the CPUID instruction directly (instead of kvm_arch_get_supported_cpuid()).
But now kvm_cpu_fill_host() uses kvm_arch_get_supported_cpuid(), and kvm_arch_get_supported_cpuid() returns all supported bits for CPUID.80000001H.EDX, even the AMD aliases (that are explicitly copied from CPUID.01H.EDX), so we can make the code check/enforce all the CPUID.80000001H.EDX bits. Signed-off-by: Eduardo Habkost <ehabk...@redhat.com> Reviewed-by: Gleb Natapov <g...@redhat.com> Signed-off-by: Andreas Färber <afaer...@suse.de> --- target-i386/cpu.c | 2 +- 1 Datei geändert, 1 Zeile hinzugefügt(+), 1 Zeile entfernt(-) diff --git a/target-i386/cpu.c b/target-i386/cpu.c index a3d104d..a2971d2 100644 --- a/target-i386/cpu.c +++ b/target-i386/cpu.c @@ -961,7 +961,7 @@ static int kvm_check_features_against_host(x86_def_t *guest_def) {&guest_def->ext_features, &host_def.ext_features, ~0, ext_feature_name, 0x00000001, R_ECX}, {&guest_def->ext2_features, &host_def.ext2_features, - ~PPRO_FEATURES, ext2_feature_name, 0x80000001, R_EDX}, + ~0, ext2_feature_name, 0x80000001, R_EDX}, {&guest_def->ext3_features, &host_def.ext3_features, ~CPUID_EXT3_SVM, ext3_feature_name, 0x80000001, R_ECX} }; -- 1.7.10.4