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Reply-To: Sean Christopherson <seanjc@google.com>
Date:   Thu, 12 May 2022 22:27:13 +0000
Message-Id: <20220512222716.4112548-1-seanjc@google.com>
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Subject: [PATCH 0/3] KVM: x86: WRMSR MCi_CTL/STATUS bug fix and cleanups
From:   Sean Christopherson <seanjc@google.com>
To:     Paolo Bonzini <pbonzini@redhat.com>
Cc:     Sean Christopherson <seanjc@google.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, Jue Wang <juew@google.com>
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Precedence: bulk

Fix bugs in set_msr_mce() where KVM returns '-1' instead of '1' when
rejecting a WRMSR, which results in -EPERM getting returned to userspace.

Patches 2 and 3 are cleanups to make {g,s}et_msr_mce a bit less wierd
(especially with respect to Jue's CMCI series) and a bit less magical.

Sean Christopherson (3):
  KVM: x86: Signal #GP, not -EPERM, on bad WRMSR(MCi_CTL/STATUS)
  KVM: x86: Use explicit case-statements for MCx banks in
    {g,s}et_msr_mce()
  KVM: x86: Add helpers to identify CTL and STATUS MCi MSRs

 arch/x86/kvm/x86.c | 84 +++++++++++++++++++++++++++-------------------
 1 file changed, 50 insertions(+), 34 deletions(-)


base-commit: 2764011106d0436cb44702cfb0981339d68c3509
-- 
2.36.0.550.gb090851708-goog