diff options
Diffstat (limited to 'src/boot/efi/vmm.c')
| -rw-r--r-- | src/boot/efi/vmm.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/boot/efi/vmm.c b/src/boot/efi/vmm.c index bfc7acc..ed654f6 100644 --- a/src/boot/efi/vmm.c +++ b/src/boot/efi/vmm.c @@ -346,7 +346,7 @@ static uint64_t msr(uint32_t index) { return val; } -static bool detect_hyperv_sev(void) { +static bool detect_hyperv_cvm(uint32_t isoltype) { uint32_t eax, ebx, ecx, edx, feat; char sig[13] = {}; @@ -363,7 +363,7 @@ static bool detect_hyperv_sev(void) { if (ebx & CPUID_HYPERV_ISOLATION && !(ebx & CPUID_HYPERV_CPU_MANAGEMENT)) { __cpuid(CPUID_HYPERV_ISOLATION_CONFIG, eax, ebx, ecx, edx); - if ((ebx & CPUID_HYPERV_ISOLATION_TYPE_MASK) == CPUID_HYPERV_ISOLATION_TYPE_SNP) + if ((ebx & CPUID_HYPERV_ISOLATION_TYPE_MASK) == isoltype) return true; } @@ -388,7 +388,7 @@ static bool detect_sev(void) { * specific CPUID checks. */ if (!(eax & EAX_SEV)) - return detect_hyperv_sev(); + return detect_hyperv_cvm(CPUID_HYPERV_ISOLATION_TYPE_SNP); msrval = msr(MSR_AMD64_SEV); @@ -412,6 +412,9 @@ static bool detect_tdx(void) { if (memcmp(sig, CPUID_SIG_INTEL_TDX, sizeof(sig)) == 0) return true; + if (detect_hyperv_cvm(CPUID_HYPERV_ISOLATION_TYPE_TDX)) + return true; + return false; } #endif /* ! __i386__ && ! __x86_64__ */ |