linux-kernel - [RFC PATCH 0/3] kvm: x86: Cleanup and optimazation of switch_db

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Message-Id: <20200416101509.73526-1-xiaoyao.li@intel.com>
Date:   Thu, 16 Apr 2020 18:15:06 +0800
From:   Xiaoyao Li <xiaoyao.li@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        kvm@...r.kernel.org
Cc:     Nadav Amit <namit@...technion.ac.il>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        linux-kernel@...r.kernel.org, Xiaoyao Li <xiaoyao.li@...el.com>
Subject: [RFC PATCH 0/3] kvm: x86: Cleanup and optimazation of switch_db_regs

Through reading debug related codes in kvm/x86, I found the flags of
switch_db_regs is a little confusing (at least for me) and there is
something to improve. So this patchset comes. But it only go througg
compilation.

Xiaoyao Li (3):
  kvm: x86: Rename KVM_DEBUGREG_RELOAD to KVM_DEBUGREG_NEED_RELOAD
  kvm: x86: Use KVM_DEBUGREG_NEED_RELOAD instead of
    KVM_DEBUGREG_BP_ENABLED
  kvm: x86: skip DRn reload if previous VM exit is DR access VM exit

 arch/x86/include/asm/kvm_host.h |  3 +--
 arch/x86/kvm/svm/svm.c          |  8 +++++---
 arch/x86/kvm/vmx/vmx.c          |  8 +++++---
 arch/x86/kvm/x86.c              | 12 ++++++------
 4 files changed, 17 insertions(+), 14 deletions(-)

-- 
2.20.1