Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
IronPort-SDR: hZJCBN3wvXXHfsSb94AwEm1htFsxaq8VIsV4Juj+AuI+bVL/bPK+cYo00o/H0jRBigRAFDXhm2
 d68LcKNxh0tg==
IronPort-SDR: SbBoppeSUtxVda/CYgowXFdVBdZnT58iPc+A9OzyJMZASltR2sLt4NyW4SnQpM3FYwtnYDkMxm
 +lwKs46mjqjA==
From:   Sean Christopherson <sean.j.christopherson@intel.com>
To:     Paolo Bonzini <pbonzini@redhat.com>
Cc:     Sean Christopherson <sean.j.christopherson@intel.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, Kai Huang <kai.huang@intel.com>
Subject: [PATCH 0/4] KVM: x86/mmu: Page fault handling cleanups
Date:   Wed, 23 Sep 2020 15:04:21 -0700
Message-Id: <20200923220425.18402-1-sean.j.christopherson@intel.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Cleanups for page fault handling that were encountered during early TDX
enabling, but are worthwhile on their own.  Specifically, patch 4 fixes an
issue where KVM doesn't detect a spurious page fault (due to the fault
being fixed by a different pCPU+vCPU) and does the full gamut of writing
the SPTE, updating stats, and prefetching SPTEs.

Sean Christopherson (4):
  KVM: x86/mmu: Return -EIO if page fault returns RET_PF_INVALID
  KVM: x86/mmu: Invert RET_PF_* check when falling through to emulation
  KVM: x86/mmu: Return unique RET_PF_* values if the fault was fixed
  KVM: x86/mmu: Bail early from final #PF handling on spurious faults

 arch/x86/kvm/mmu/mmu.c         | 70 +++++++++++++++++++++-------------
 arch/x86/kvm/mmu/mmutrace.h    | 13 +++----
 arch/x86/kvm/mmu/paging_tmpl.h |  3 ++
 3 files changed, 52 insertions(+), 34 deletions(-)

-- 
2.28.0