[PATCH 38/43] KVM: VMX: Don't redo x2APIC MSR bitmaps when userspace filter is changed

From: Sean Christopherson
Date: Fri Apr 23 2021 - 20:55:21 EST


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@xxxxxxxxxx>
---
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