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Reply-To: Sean Christopherson <seanjc@google.com>
Date:   Fri, 23 Apr 2021 17:46:40 -0700
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Subject: [PATCH 38/43] KVM: VMX: Don't redo x2APIC MSR bitmaps when userspace
 filter is changed
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
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Precedence: bulk

Drop an explicit call to update the x2APIC MSRs when the userspace MSR
filter is modified.  The x2APIC MSRs are deliberately exempt from
userspace filtering.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 arch/x86/kvm/vmx/vmx.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 45a013631f63..beaf9fefddad 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -4055,7 +4055,6 @@ static void vmx_msr_filter_changed(struct kvm_vcpu *vcpu)
 	}
 
 	pt_update_intercept_for_msr(vcpu);
-	vmx_update_msr_bitmap_x2apic(vcpu, vmx_msr_bitmap_mode(vcpu));
 }
 
 static inline bool kvm_vcpu_trigger_posted_interrupt(struct kvm_vcpu *vcpu,
-- 
2.31.1.498.g6c1eba8ee3d-goog