diff options
Diffstat (limited to 'sys/amd64/vmm/x86.c')
| -rw-r--r-- | sys/amd64/vmm/x86.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/sys/amd64/vmm/x86.c b/sys/amd64/vmm/x86.c index 3e7a4be..ef1557f 100644 --- a/sys/amd64/vmm/x86.c +++ b/sys/amd64/vmm/x86.c @@ -241,6 +241,26 @@ x86_emulate_cpuid(struct vm *vm, int vcpu_id, /* leaf 0 */ if (*ecx == 0) { + cpuid_count(*eax, *ecx, regs); + + /* Only leaf 0 is supported */ + regs[0] = 0; + + /* + * Expose known-safe features. + */ + regs[1] &= (CPUID_STDEXT_FSGSBASE | + CPUID_STDEXT_BMI1 | CPUID_STDEXT_HLE | + CPUID_STDEXT_AVX2 | CPUID_STDEXT_BMI2 | + CPUID_STDEXT_ERMS | CPUID_STDEXT_RTM | + CPUID_STDEXT_AVX512F | + CPUID_STDEXT_AVX512PF | + CPUID_STDEXT_AVX512ER | + CPUID_STDEXT_AVX512CD); + regs[2] = 0; + regs[3] = 0; + + /* Advertise INVPCID if it is enabled. */ error = vm_get_capability(vm, vcpu_id, VM_CAP_ENABLE_INVPCID, &enable_invpcid); if (error == 0 && enable_invpcid) |
