linux-kernel - [PATCH v2 0/2] KVM: x86: Replace magic number with readable macro

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Date:   Tue, 29 Mar 2022 11:01:05 +0800
From:   "SU Hang" <darcy.sh@...group.com>
To:     seanjc@...gle.com, kvm@...r.kernel.org
Cc:     "Lai Jiangshan" <jiangshan.ljs@...group.com>,
        "SU Hang" <darcy.sh@...group.com>,
        "Thomas Gleixner" <tglx@...utronix.de>,
        "Ingo Molnar" <mingo@...hat.com>, "Borislav Petkov" <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, <x86@...nel.org>,
        "Paolo Bonzini" <pbonzini@...hat.com>,
        "Radim Krčmář" <rkrcmar@...hat.com>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 0/2] KVM: x86: Replace magic number with readable macro

Replace magic number 0x180 with `EPT_VIOLATION_GVA_IS_VALID | EPT_VIOLATION_GVA_TRANSLATED`
in arch/x86/kvm/mmu/paging_tmpl.h
Similarly, replace `(pte_access & 0x7) << 3` with
`(pte_access & VMX_EPT_RWX_MASK) << EPT_VIOLATION_RWX_SHIFT`.

v1 -> v2: https://lore.kernel.org/kvm/20220321094203.109546-1-darcy.sh@antgroup.com/
- Rename `EPT_VIOLATION_GVA_VALIDATION` to `EPT_VIOLATION_GVA_IS_VALID`. [Sean]
- Using new added `VMX_EPT_RWX_MASK` to replace magic number 0x7 and so on,
  to avoid using branch statement in hotpath. [Sean]

SU Hang (1):
  KVM: VMX:  replace 0x180 with EPT_VIOLATION_* definition

Sean Christopherson (1):
  KVM: x86/mmu: Derive EPT violation RWX bits from EPTE RWX bits

 arch/x86/include/asm/vmx.h     |  9 +++------
 arch/x86/kvm/mmu/paging_tmpl.h | 11 +++++++++--
 arch/x86/kvm/vmx/vmx.c         |  4 +---
 3 files changed, 13 insertions(+), 11 deletions(-)

--
2.32.0.3.g01195cf9f