[edk2-devel] [PATCH v9 0/4] Add safe unaccepted memory behavior

[Gerd Hoffmann]

On Wed, Jan 25, 2023 at 12:44:13PM +0100, Ard Biesheuvel wrote:
> On Wed, 25 Jan 2023 at 10:18, Gerd Hoffmann <kraxel at redhat.com> wrote:
> >
> > On Wed, Jan 25, 2023 at 10:01:47AM +0100, Ard Biesheuvel wrote:
> >
> > > Exactly. And my Fedora kernel has those bits enabled by default.
> > >
> > > So I suppose the way forward here is to expose this protocol only on
> > > OVMF builds that target SEV-SNP, instead of introducing it as a
> > > generic CoCo feature.
> >
> > OVMF builds already adapt at runtime, so this needs to be a runtime
> > check too.  But IIRC the module already checks whenever SNP-SEV or TDX
> > is active before installing, so we only need to tweak that check to drop
> > the TDX check.
> >
> 
> Sure. But Dionna's series introduces a new CocoDxe driver that is
> intended to carry shared logic, but we should probably add this stuff
> to AmdSevDxe instead.

OvmfPkgX64.dsc can run in SEV/TDX modes too, so it is needed there as
well.  We can probably leave it out from IntelTdx (assuming Intel's
upstream merge plans work out as expected and tdx-guest + unaccepted
memory actually land in the same kernel release).

take care,
  Gerd



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