Re: [PATCH 0/5] x86: Impplement support for unaccepted memory

From: Joerg Roedel
Date: Fri Aug 13 2021 - 10:56:55 EST

On Thu, Aug 12, 2021 at 11:22:51PM +0300, Kirill A. Shutemov wrote:
> On Thu, Aug 12, 2021 at 12:33:11PM -0700, Andi Kleen wrote:
> > I think Joerg's question was if TDX has a single ABI for all hypervisors.
> > The GHCI specification supports both hypervisor specific and hypervisor
> > agnostic calls. But these basic operations like MapGPA are all hypervisor
> > agnostic. The only differences would be in the existing hypervisor specific
> > PV code.
> My point was that TDX and SEV-SNP going to be different and we need a way
> to hook the right protocol for each.

Yeah, okay, thanks for the clarification. My misunderstanding was that
there could be per-hypervisor contract on what memory is pre-accepted
and what Linux is responsible for.