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

[Sean Christopherson]

On Wed, 28 Jan 2026 17:14:32 -0800, Sean Christopherson wrote:
> This is a combined series of Dynamic PAMT (from Rick), and S-EPT hugepage
> support (from Yan).  Except for some last minute tweaks to the DPAMT array
> args stuff, a version of this based on a Google-internal kernel has been
> moderately well tested (thanks Vishal!).  But overall it's still firmly RFC
> as I have deliberately NOT addressed others feedback from v4 of DPAMT and v3
> of S-EPT hugepage (mostly lack of cycles), and there's at least one patch in
> here that shouldn't be merged as-is (the quick-and-dirty switch from struct
> page to raw pfns).
> 
> [...]

Applied 1-4 to kvm-x86 mmu.  Please yell if this was unexpected in any way.
I'm pretty sure this is what we agreed on, but the last few week have been a
bit chaotic...

[01/45] x86/tdx: Use pg_level in TDX APIs, not the TDX-Module's 0-based level
        https://github.com/kvm-x86/linux/commit/4487492b92a4
[02/45] KVM: x86/mmu: Update iter->old_spte if cmpxchg64 on mirror SPTE "fails"
        https://github.com/kvm-x86/linux/commit/02eaaffdd865
[03/45] KVM: TDX: Account all non-transient page allocations for per-TD structures
        https://github.com/kvm-x86/linux/commit/a8b2924676ec
[04/45] KVM: x86: Make "external SPTE" ops that can fail RET0 static calls
        https://github.com/kvm-x86/linux/commit/e1a31ca28c9d

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