linux-kernel - [PATCH v2 00/25] KVM MMU refactoring part 2: role changes

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Date:   Mon, 21 Feb 2022 11:22:18 -0500
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     dmatlack@...gle.com, seanjc@...gle.com
Subject: [PATCH v2 00/25] KVM MMU refactoring part 2: role changes

This is the MMU root role vs. CPU mode split.  While not a requirement
in absolute terms for further hacking, it makes it much clearer to reason
on whether the previous root is still valid.

Paolo

Paolo Bonzini (25):
  KVM: x86/mmu: avoid indirect call for get_cr3
  KVM: x86/mmu: nested EPT cannot be used in SMM
  KVM: x86/mmu: constify uses of struct kvm_mmu_role_regs
  KVM: x86/mmu: pull computation of kvm_mmu_role_regs to kvm_init_mmu
  KVM: x86/mmu: rephrase unclear comment
  KVM: nVMX/nSVM: do not monkey-patch inject_page_fault callback
  KVM: x86/mmu: remove "bool base_only" arguments
  KVM: x86/mmu: split cpu_mode from mmu_role
  KVM: x86/mmu: do not recompute root level from kvm_mmu_role_regs
  KVM: x86/mmu: remove ept_ad field
  KVM: x86/mmu: remove kvm_calc_shadow_root_page_role_common
  KVM: x86/mmu: cleanup computation of MMU roles for two-dimensional
    paging
  KVM: x86/mmu: cleanup computation of MMU roles for shadow paging
  KVM: x86/mmu: store shadow EFER.NX in the MMU role
  KVM: x86/mmu: remove extended bits from mmu_role, rename field
  KVM: x86/mmu: rename kvm_mmu_role union
  KVM: x86/mmu: remove redundant bits from extended role
  KVM: x86/mmu: remove valid from extended role
  KVM: x86/mmu: simplify and/or inline computation of shadow MMU roles
  KVM: x86/mmu: pull CPU mode computation to kvm_init_mmu
  KVM: x86/mmu: replace shadow_root_level with root_role.level
  KVM: x86/mmu: replace root_level with cpu_mode.base.level
  KVM: x86/mmu: replace direct_map with root_role.direct
  KVM: x86/mmu: initialize constant-value fields just once
  KVM: x86/mmu: extract initialization of the page walking data

 arch/x86/include/asm/kvm_host.h |  25 +-
 arch/x86/kvm/mmu.h              |  12 +-
 arch/x86/kvm/mmu/mmu.c          | 479 +++++++++++++-------------------
 arch/x86/kvm/mmu/paging_tmpl.h  |  16 +-
 arch/x86/kvm/mmu/tdp_mmu.c      |   4 +-
 arch/x86/kvm/svm/nested.c       |  13 +-
 arch/x86/kvm/svm/svm.c          |   2 +-
 arch/x86/kvm/vmx/nested.c       |   9 +-
 arch/x86/kvm/vmx/vmx.c          |   2 +-
 arch/x86/kvm/x86.c              |  31 ++-
 10 files changed, 260 insertions(+), 333 deletions(-)

-- 
2.31.1