diff options
Diffstat (limited to 'target-i386/helper.c')
| -rw-r--r-- | target-i386/helper.c | 27 |
1 files changed, 5 insertions, 22 deletions
diff --git a/target-i386/helper.c b/target-i386/helper.c index 2e775701d6..bcaaab71a4 100644 --- a/target-i386/helper.c +++ b/target-i386/helper.c @@ -1643,28 +1643,11 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, *edx = env->cpuid_ext2_features; if (kvm_enabled()) { - uint32_t h_eax, h_edx; - - host_cpuid(index, 0, &h_eax, NULL, NULL, &h_edx); - - /* disable CPU features that the host does not support */ - - /* long mode */ - if ((h_edx & 0x20000000) == 0 /* || !lm_capable_kernel */) - *edx &= ~0x20000000; - /* syscall */ - if ((h_edx & 0x00000800) == 0) - *edx &= ~0x00000800; - /* nx */ - if ((h_edx & 0x00100000) == 0) - *edx &= ~0x00100000; - - /* disable CPU features that KVM cannot support */ - - /* svm */ - *ecx &= ~4UL; - /* 3dnow */ - *edx &= ~0xc0000000; + /* Nested SVM not yet supported in KVM */ + *ecx &= ~CPUID_EXT3_SVM; + } else { + /* AMD 3DNow! is not supported in QEMU */ + *edx &= ~(CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT); } break; case 0x80000002: |