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SubjectRe: [PATCH 03/26] x86/tdx: Add __tdx_module_call() and __tdx_hypercall() helper functions
On Fri, Dec 24, 2021 at 10:16:16AM +0100, Paolo Bonzini wrote:
> 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.

We are talking about the way it gets loaded, not about its functionality.
>
> Paolo
>

--
Kirill A. Shutemov

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