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Add FADT Hypervisor Vendor Identity check to VM::FIRMWARE #617

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Merged
NotRequiem merged 2 commits into from
Feb 3, 2026
Merged

Add FADT Hypervisor Vendor Identity check to VM::FIRMWARE #617

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2cc0d26
Add FADT hypervisor vendor identity check in vmaware.hpp
Scrut1ny Feb 3, 2026
71345c9
Fix debug message for Hypervisor Vendor Identity
Scrut1ny Feb 3, 2026
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10 changes: 10 additions & 0 deletions src/vmaware.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -6604,6 +6604,16 @@ struct VM {
debug("FIRMWARE: C2 and C3 latencies indicate VM");
return true;
}

if (buffer_len >= 276) {
u64 hypervisor_vid = 0;
memcpy(&hypervisor_vid, buffer + 268, 8);

if (hypervisor_vid != 0) {
debug("FIRMWARE: FACP 'Hypervisor Vendor Identity' field is occupied");
return true;
}
}
}

return false;
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