[v2,00/10] KVM: x86/mmu: Make tdp_mmu read-only and clean up TPD MMU fault handler

Message ID	20220826231227.4096391-1-dmatlack@google.com (mailing list archive)
Headers	show Return-Path: <kvm-owner@kernel.org> Date: Fri, 26 Aug 2022 16:12:17 -0700 Mime-Version: 1.0 Message-ID: <20220826231227.4096391-1-dmatlack@google.com> Subject: [PATCH v2 00/10] KVM: x86/mmu: Make tdp_mmu read-only and clean up TPD MMU fault handler From: David Matlack <dmatlack@google.com> To: Paolo Bonzini <pbonzini@redhat.com> Cc: Sean Christopherson <seanjc@google.com>, kvm@vger.kernel.org, David Matlack <dmatlack@google.com>, Kai Huang <kai.huang@intel.com>, Peter Xu <peterx@redhat.com> Content-Type: text/plain; charset="UTF-8" Precedence: bulk
Series	KVM: x86/mmu: Make tdp_mmu read-only and clean up TPD MMU fault handler \| expand [v2,00/10] KVM: x86/mmu: Make tdp_mmu read-only and clean up TPD MMU fault handler [v2,01/10] KVM: x86/mmu: Change tdp_mmu to a read-only parameter [v2,02/10] KVM: x86/mmu: Move TDP MMU VM init/uninit behind tdp_mmu_enabled [v2,03/10] KVM: x86/mmu: Grab mmu_invalidate_seq in kvm_faultin_pfn() [v2,04/10] KVM: x86/mmu: Handle error PFNs in kvm_faultin_pfn() [v2,05/10] KVM: x86/mmu: Avoid memslot lookup during KVM_PFN_ERR_HWPOISON handling [v2,06/10] KVM: x86/mmu: Handle no-slot faults in kvm_faultin_pfn() [v2,07/10] KVM: x86/mmu: Initialize fault.{gfn,slot} earlier for direct MMUs [v2,08/10] KVM: x86/mmu: Split out TDP MMU page fault handling [v2,09/10] KVM: x86/mmu: Stop needlessly making MMU pages available for TDP MMU faults [v2,10/10] KVM: x86/mmu: Rename __direct_map() to direct_map()

Message ID

20220826231227.4096391-1-dmatlack@google.com (mailing list archive)

Headers

Date: Fri, 26 Aug 2022 16:12:17 -0700
Mime-Version: 1.0
Message-ID: <20220826231227.4096391-1-dmatlack@google.com>
Subject: [PATCH v2 00/10] KVM: x86/mmu: Make tdp_mmu read-only and clean up
 TPD MMU fault handler
From: David Matlack <dmatlack@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>, kvm@vger.kernel.org,
        David Matlack <dmatlack@google.com>,
        Kai Huang <kai.huang@intel.com>, Peter Xu <peterx@redhat.com>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

Series

KVM: x86/mmu: Make tdp_mmu read-only and clean up TPD MMU fault handler | expand

Message

David Matlack Aug. 26, 2022, 11:12 p.m. UTC

This series changes the tdp_mmu module parameter to read-only so that
the TDP MMU can be tracked in a global variable instead of per-VM
state. Then it splits out a separate page fault handler for the TDP MMU
and makes some clean ups along the way.

v2:
 - Make tdp_mmu read-only instead of deleting it entirely [Paolo]
 - Fix 32-bit compilation failures [kernel test robot]

v1: https://lore.kernel.org/kvm/20220815230110.2266741-1-dmatlack@google.com/

Cc: Kai Huang <kai.huang@intel.com>
Cc: Peter Xu <peterx@redhat.com>

David Matlack (10):
  KVM: x86/mmu: Change tdp_mmu to a read-only parameter
  KVM: x86/mmu: Move TDP MMU VM init/uninit behind tdp_mmu_enabled
  KVM: x86/mmu: Grab mmu_invalidate_seq in kvm_faultin_pfn()
  KVM: x86/mmu: Handle error PFNs in kvm_faultin_pfn()
  KVM: x86/mmu: Avoid memslot lookup during KVM_PFN_ERR_HWPOISON
    handling
  KVM: x86/mmu: Handle no-slot faults in kvm_faultin_pfn()
  KVM: x86/mmu: Initialize fault.{gfn,slot} earlier for direct MMUs
  KVM: x86/mmu: Split out TDP MMU page fault handling
  KVM: x86/mmu: Stop needlessly making MMU pages available for TDP MMU
    faults
  KVM: x86/mmu: Rename __direct_map() to direct_map()

 arch/x86/include/asm/kvm_host.h |   9 --
 arch/x86/kvm/mmu.h              |  11 +-
 arch/x86/kvm/mmu/mmu.c          | 241 ++++++++++++++++++++------------
 arch/x86/kvm/mmu/mmu_internal.h |   8 +-
 arch/x86/kvm/mmu/paging_tmpl.h  |  12 +-
 arch/x86/kvm/mmu/tdp_mmu.c      |  11 --
 arch/x86/kvm/mmu/tdp_mmu.h      |   7 +-
 7 files changed, 170 insertions(+), 129 deletions(-)


base-commit: 372d07084593dc7a399bf9bee815711b1fb1bcf2
prerequisite-patch-id: 2e3661ba8856c29b769499bac525b6943d9284b8