[RFC, PATCH 00/12] TDX: Enable Dynamic PAMT

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To: pbonzini@xxxxxxxxxx, seanjc@xxxxxxxxxx
Subject: [RFC, PATCH 00/12] TDX: Enable Dynamic PAMT
From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Date: Fri, 2 May 2025 16:08:16 +0300
Cc: rick.p.edgecombe@xxxxxxxxx, isaku.yamahata@xxxxxxxxx, kai.huang@xxxxxxxxx, yan.y.zhao@xxxxxxxxx, tglx@xxxxxxxxxxxxx, mingo@xxxxxxxxxx, bp@xxxxxxxxx, dave.hansen@xxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, linux-coco@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>

This RFC patchset enables Dynamic PAMT in TDX. It is not intended to be
applied, but rather to receive early feedback on the feature design and
enabling.

Follow-Ups:
- Re: [RFC, PATCH 00/12] TDX: Enable Dynamic PAMT
  - From: Zhi Wang
- Re: [RFC, PATCH 00/12] TDX: Enable Dynamic PAMT
  - From: Sean Christopherson
- [RFC, PATCH 05/12] KVM: TDX: Add tdx_pamt_get()/put() helpers
  - From: Kirill A. Shutemov
- [RFC, PATCH 07/12] KVM: TDX: Allocate PAMT memory in tdx_td_vcpu_init()
  - From: Kirill A. Shutemov
- [RFC, PATCH 08/12] KVM: x86/tdp_mmu: Add phys_prepare() and phys_cleanup() to kvm_x86_ops
  - From: Kirill A. Shutemov
- [RFC, PATCH 10/12] KVM: TDX: Hookup phys_prepare() and phys_cleanup() kvm_x86_ops
  - From: Kirill A. Shutemov
- [RFC, PATCH 12/12] x86/virt/tdx: Enable Dynamic PAMT
  - From: Kirill A. Shutemov
- [RFC, PATCH 09/12] KVM: TDX: Preallocate PAMT pages to be used in page fault path
  - From: Kirill A. Shutemov
- [RFC, PATCH 06/12] KVM: TDX: Allocate PAMT memory in __tdx_td_init()
  - From: Kirill A. Shutemov
- [RFC, PATCH 11/12] KVM: TDX: Reclaim PAMT memory
  - From: Kirill A. Shutemov
- [RFC, PATCH 01/12] x86/virt/tdx: Allocate page bitmap for Dynamic PAMT
  - From: Kirill A. Shutemov
- [RFC, PATCH 03/12] x86/virt/tdx: Add wrappers for TDH.PHYMEM.PAMT.ADD/REMOVE
  - From: Kirill A. Shutemov
- [RFC, PATCH 04/12] x86/virt/tdx: Account PAMT memory and print if in /proc/meminfo
  - From: Kirill A. Shutemov
- [RFC, PATCH 02/12] x86/virt/tdx: Allocate reference counters for PAMT memory
  - From: Kirill A. Shutemov

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