[PATCH 0/4] KVM: x86: Kill off pdptrs_changed()

From: Sean Christopherson <seanjc@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
	kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 0/4] KVM: x86: Kill off pdptrs_changed()
Date: Thu, 22 Apr 2021 17:06:33 -0700	[thread overview]
Message-ID: <20210423000637.3692951-1-seanjc@google.com> (raw)

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