Commit c8781fea authored by Sean Christopherson's avatar Sean Christopherson Committed by Paolo Bonzini
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KVM: SVM: Skip intercepted PAUSE instructions after emulation 



Skip PAUSE after interception to avoid unnecessarily re-executing the
instruction in the guest, e.g. after regaining control post-yield.
This is a benign bug as KVM disables PAUSE interception if filtering is
off, including the case where pause_filter_count is set to zero.

Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
Message-Id: <20210205005750.3841462-10-seanjc@google.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 32c23c7d

arch/x86/kvm/svm/svm.c

+1 −1
Original line number Diff line number Diff line
@@ -2980,7 +2980,7 @@ static int pause_interception(struct kvm_vcpu *vcpu) 
		grow_ple_window(vcpu);



	kvm_vcpu_on_spin(vcpu, in_kernel);

	return 1;

	return kvm_skip_emulated_instruction(vcpu);

}



static int invpcid_interception(struct kvm_vcpu *vcpu)