linux-kernel - [PATCH 0/4] KVM: x86: Kill off pdptrs

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Message-Id: <20210423000637.3692951-1-seanjc@google.com>
Date:   Thu, 22 Apr 2021 17:06:33 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/4] KVM: x86: Kill off pdptrs_changed()

Remove pdptrs_changed(), which is mostly dead anyways, and the few bits
that are still thrashing are useless.

This conflicts with Maxim's work to migrate PDPTRs out-of-band, but I
think it will conflict in a good way as the "skip load_pdptrs()"
logic for the out-of-band case won't have to juggle this legacy crud.

Sean Christopherson (4):
  KVM: nVMX: Drop obsolete (and pointless) pdptrs_changed() check
  KVM: nSVM: Drop pointless pdptrs_changed() check on nested transition
  KVM: x86: Always load PDPTRs on CR3 load for SVM w/o NPT and a PAE
    guest
  KVM: x86: Unexport kvm_read_guest_page_mmu()

 arch/x86/include/asm/kvm_host.h |  4 ----
 arch/x86/kvm/svm/nested.c       |  6 ++---
 arch/x86/kvm/vmx/nested.c       |  8 +++----
 arch/x86/kvm/x86.c              | 41 ++++-----------------------------
 4 files changed, 10 insertions(+), 49 deletions(-)

-- 
2.31.1.498.g6c1eba8ee3d-goog