[edk2-rfc] [edk2-devel] RFC: design review for TDVF in OVMF

Laszlo Ersek lersek at redhat.com
Wed Jun 9 11:00:34 UTC 2021

On 06/09/21 02:58, Xu, Min M wrote:
> On 06/09/2021 3:33 AM, Laszlo wrote:
>> On 06/08/21 18:01, James Bottomley wrote:

>>> On your slide 13 Question: "Open: How will the QEMU find the metadata
>>> location?" can't you just use the mechanism for SEV that's already
>>> upstream in both QEMU and OVMF?
>> I think I made the same comment, in different words. (Point (12) at
>> <https://listman.redhat.com/archives/edk2-devel-archive/2021-
>> June/msg00143.html>.)
> So my understanding to this solution is that: 
> 1) GUID-ed structure chain is started from a fixed GPA in ResetVector. 
> 2) Append a TDX-specific GUID-ed structure in the chain
> 3) Qemu search the GUID-ed chain from the fixed GPA and find the TDX-specific
>     GUID-ed structure based on TDX-specific GUID.
> Is the expected process for QEMU?

This is my understanding, yes; James will know more details though.



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