linux-kernel - [PATCH 2/2] KVM: X86: Don't block vCPU if there is pending exception

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Message-Id: <1505300641-7292-1-git-send-email-wanpeng.li@hotmail.com>
Date:   Wed, 13 Sep 2017 04:04:01 -0700
From:   Wanpeng Li <kernellwp@...il.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Wanpeng Li <wanpeng.li@...mail.com>
Subject: [PATCH 2/2] KVM: X86: Don't block vCPU if there is pending exception

From: Wanpeng Li <wanpeng.li@...mail.com>

Don't block vCPU if there is pending exception.

Cc: Paolo Bonzini <pbonzini@...hat.com>
Cc: Radim Krčmář <rkrcmar@...hat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@...mail.com>
---
 arch/x86/kvm/x86.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 6069af8..1a0dce4 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -8452,6 +8452,9 @@ static inline bool kvm_vcpu_has_events(struct kvm_vcpu *vcpu)
 	if (vcpu->arch.pv.pv_unhalted)
 		return true;
 
+	if (vcpu->arch.exception.pending)
+		return true;
+
 	if (kvm_test_request(KVM_REQ_NMI, vcpu) ||
 	    (vcpu->arch.nmi_pending &&
 	     kvm_x86_ops->nmi_allowed(vcpu)))
-- 
2.7.4