diff options
Diffstat (limited to 'hw/i386/fw_cfg.c')
| -rw-r--r-- | hw/i386/fw_cfg.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/hw/i386/fw_cfg.c b/hw/i386/fw_cfg.c index 4e68d5dea4..a283785a8d 100644 --- a/hw/i386/fw_cfg.c +++ b/hw/i386/fw_cfg.c @@ -159,7 +159,7 @@ void fw_cfg_build_feature_control(MachineState *ms, FWCfgState *fw_cfg) { X86CPU *cpu = X86_CPU(ms->possible_cpus->cpus[0].cpu); CPUX86State *env = &cpu->env; - uint32_t unused, ecx, edx; + uint32_t unused, ebx, ecx, edx; uint64_t feature_control_bits = 0; uint64_t *val; @@ -174,6 +174,16 @@ void fw_cfg_build_feature_control(MachineState *ms, FWCfgState *fw_cfg) feature_control_bits |= FEATURE_CONTROL_LMCE; } + if (env->cpuid_level >= 7) { + cpu_x86_cpuid(env, 0x7, 0, &unused, &ebx, &ecx, &unused); + if (ebx & CPUID_7_0_EBX_SGX) { + feature_control_bits |= FEATURE_CONTROL_SGX; + } + if (ecx & CPUID_7_0_ECX_SGX_LC) { + feature_control_bits |= FEATURE_CONTROL_SGX_LC; + } + } + if (!feature_control_bits) { return; } |