linux-kernel - [PATCH 0/5] KVM: x86/mmu: TDP MMU fixes for 6.2

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Message-ID: <20221213033030.83345-1-seanjc@google.com>
Date:   Tue, 13 Dec 2022 03:30:25 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Robert Hoo <robert.hu@...ux.intel.com>,
        Greg Thelen <gthelen@...gle.com>,
        David Matlack <dmatlack@...gle.com>,
        Ben Gardon <bgardon@...gle.com>,
        Mingwei Zhang <mizhang@...gle.com>
Subject: [PATCH 0/5] KVM: x86/mmu: TDP MMU fixes for 6.2

Fix three fatal TDP MMU bugs introduced in 6.2, harden related code,
and clean up kvm_tdp_mmu_map() to eliminate the need for gotos.

Sean Christopherson (5):
  KVM: x86/mmu: Don't attempt to map leaf if target TDP MMU SPTE is
    frozen
  KVM: x86/mmu: Map TDP MMU leaf SPTE iff target level is reached
  KVM: x86/mmu: Re-check under lock that TDP MMU SP hugepage is
    disallowed
  KVM: x86/mmu: Don't install TDP MMU SPTE if SP has unexpected level
  KVM: x86/mmu: Move kvm_tdp_mmu_map()'s prolog and epilog to its caller

 arch/x86/kvm/mmu/mmu.c          |  9 +++++++-
 arch/x86/kvm/mmu/mmu_internal.h |  1 -
 arch/x86/kvm/mmu/tdp_mmu.c      | 39 +++++++++++++++------------------
 3 files changed, 26 insertions(+), 23 deletions(-)


base-commit: 51229fd7872f82af07498aef5c79ad51baf81ea0
-- 
2.39.0.rc1.256.g54fd8350bd-goog