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From:   Chao Gao <chao.gao@intel.com>
To:     kvm@vger.kernel.org, x86@kernel.org
Cc:     xiaoyao.li@intel.com, Chao Gao <chao.gao@intel.com>,
        Alexandre Chartre <alexandre.chartre@oracle.com>,
        Ashok Raj <ashok.raj@intel.com>,
        Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
        Juergen Gross <jgross@suse.com>,
        Kim Phillips <kim.phillips@amd.com>,
        linux-kernel@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
        Pawan Gupta <pawan.kumar.gupta@linux.intel.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Sean Christopherson <seanjc@google.com>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: [PATCH v2 0/3] MSR_IA32_ARCH_CAPABILITIES cleanups
Date:   Wed, 24 May 2023 14:16:30 +0800
Message-Id: <20230524061634.54141-1-chao.gao@intel.com>
MIME-Version: 1.0
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Precedence: bulk

Do some cleanups about MSR_IA32_ARCH_CAPABILITIES in KVM e.g, fix stale
comments, elimite open-coded MSR reads, track features that can be exposed to
guests to avoid computing them runtime. They are found when reading the code.

No functional change intented.

Changes from v1 -> v2:
1. toggle ARCH_CAP_SKIP_VMENTRY_L1DFLUSH bit when l1tf mitigation state is
   changed by module param. [Xiaoyao, Sean]
2. add more cleanups (patch 2/3)


Chao Gao (3):
  KVM: x86: Track supported ARCH_CAPABILITIES in kvm_caps
  KVM: x86: Correct the name for skipping VMENTER l1d flush
  x86/cpu, KVM: Use helper function to read MSR_IA32_ARCH_CAPABILITIES

 arch/x86/kernel/cpu/common.c |  1 +
 arch/x86/kvm/vmx/vmx.c       | 44 +++++++++++++++++++++++-------------
 arch/x86/kvm/x86.c           | 16 +++++--------
 arch/x86/kvm/x86.h           |  1 +
 4 files changed, 36 insertions(+), 26 deletions(-)


base-commit: b9846a698c9aff4eb2214a06ac83638ad098f33f
-- 
2.40.0