linux-kernel - [PATCH 2/2] KVM: VMX: Stop the preemption timer during vCPU reset

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Message-Id: <1567664788-10249-2-git-send-email-wanpengli@tencent.com>
Date:   Thu,  5 Sep 2019 14:26:28 +0800
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>
Subject: [PATCH 2/2] KVM: VMX: Stop the preemption timer during vCPU reset

From: Wanpeng Li <wanpengli@...cent.com>

The hrtimer which is used to emulate lapic timer is stopped during 
vcpu reset, preemption timer should do the same.

Cc: Paolo Bonzini <pbonzini@...hat.com>
Cc: Radim Krčmář <rkrcmar@...hat.com>
Signed-off-by: Wanpeng Li <wanpengli@...cent.com>
---
 arch/x86/kvm/vmx/vmx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 570a233..f794929 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -4162,6 +4162,7 @@ static void vmx_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
 
 	vcpu->arch.microcode_version = 0x100000000ULL;
 	vmx->vcpu.arch.regs[VCPU_REGS_RDX] = get_rdx_init_val();
+	vmx->hv_deadline_tsc = -1;
 	kvm_set_cr8(vcpu, 0);
 
 	if (!init_event) {
-- 
2.7.4