Re: [RFC PATCH v5 00/45] TDX: Dynamic PAMT + S-EPT Hugepage

[Sean Christopherson <seanjc@google.com>]

On Wed, Feb 04, 2026, Dave Hansen wrote:
> On 2/4/26 06:38, Sean Christopherson wrote:
> ...
> > We can and do have tests and VMM support, but it's all out-of-tree (for now).
> > All I'm saying here is that I'm ok landing the S-EPT hugepage code in advance of
> > guest_memfd hugepage support, e.g. so that we don't end up in a stalemate due to
> > cyclical dependecies, or one big megaseries.
> 
> Does "landing" mean having it sit in some topic branch, or pushing to Linus?

I was thinking pushing to Linus' tree, but a topic branch could likely provide
almost as much value?

> I'm all for getting these hellish dependency chains out of the way, but
> we usually try pretty hard to avoid having dead/unreachable code in
> mainline.
> 
> If it is something you want to do in mainline, we should probably do a
> bit of cross-x86/kvm brainstorming to make sure there's no other option.

I'm a-ok starting with a topic branch.  If maintaining that branch becomes too
costly, then we can always revisit things.  And that would probably be good
motiviation to beat guest_memfd hugepage into shape :-)