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SubjectRe: [PATCH 03/26] x86/tdx: Add __tdx_module_call() and __tdx_hypercall() helper functions
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On 12/23/21 17:55, Kirill A. Shutemov wrote:
> In a TDX based VM, since the VMM is an untrusted entity, an intermediary
> layer -- TDX module -- facilitates secure communication between the host
> and the guest. TDX module is loaded like a firmware into a special CPU
> mode called SEAM. TDX guests communicate with the TDX module using the
> TDCALL instruction.
>
> Does it look fine?

Looks good but I wouldn't say "like a firmware". The TDX module is the
"real" hypervisor, it's not firmware.

Paolo

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