linux-kernel - [PATCH v2 0/2] KVM: x86/mmu: Optimize rsvd pte checks

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Message-Id: <20200109230640.29927-1-sean.j.christopherson@intel.com>
Date:   Thu,  9 Jan 2020 15:06:38 -0800
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <sean.j.christopherson@...el.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,
        David Laight <David.Laight@...LAB.COM>,
        Arvind Sankar <nivedita@...m.mit.edu>
Subject: [PATCH v2 0/2] KVM: x86/mmu: Optimize rsvd pte checks

Two patches to optimize the reserved bit and illegal EPT memtype/XWR
checks, and more importantly, clean up an undocumented, subtle bitwise-OR
in the code.

v2: Rewrite everything.

v1: https://lkml.kernel.org/r/20200108001859.25254-1-sean.j.christopherson@intel.com

Sean Christopherson (2):
  KVM: x86/mmu: Reorder the reserved bit check in
    prefetch_invalid_gpte()
  KVM: x86/mmu: Micro-optimize nEPT's bad memptype/XWR checks

 arch/x86/kvm/mmu/mmu.c         | 26 ++++++++++++++------------
 arch/x86/kvm/mmu/paging_tmpl.h | 23 +++++++++++++++++++----
 2 files changed, 33 insertions(+), 16 deletions(-)

-- 
2.24.1