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:

quoted

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.

Thanks,

	Joerg