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From: Wanpeng Li <kernellwp@gmail.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: "Paolo Bonzini" <pbonzini@redhat.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>,
	"Sean Christopherson" <sean.j.christopherson@intel.com>,
	"Vitaly Kuznetsov" <vkuznets@redhat.com>,
	"Wanpeng Li" <wanpengli@tencent.com>,
	"Jim Mattson" <jmattson@google.com>,
	"Joerg Roedel" <joro@8bytes.org>
Subject: [PATCH RESEND 4/5] KVM: VMX: Stop the preemption timer during vCPU reset
Date: Fri,  6 Sep 2019 09:30:03 +0800	[thread overview]
Message-ID: <1567733404-7759-4-git-send-email-wanpengli@tencent.com> (raw)
In-Reply-To: <1567733404-7759-1-git-send-email-wanpengli@tencent.com>

From: Wanpeng Li <wanpengli@tencent.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@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.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


  parent reply	other threads:[~2019-09-06  1:30 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-06  1:30 [PATCH RESEND v3 1/5] KVM: LAPIC: Tune lapic_timer_advance_ns smoothly Wanpeng Li
2019-09-06  1:30 ` [PATCH RESEND v3 2/5] KVM: LAPIC: Periodically revaluate to get conservative lapic_timer_advance_ns Wanpeng Li
2019-09-06  1:30 ` [PATCH RESEND 3/5] KVM: LAPIC: Micro optimize IPI latency Wanpeng Li
2019-09-06  1:30 ` Wanpeng Li [this message]
2019-09-06  1:30 ` [PATCH v2 5/5] KVM: hyperv: Fix Direct Synthetic timers assert an interrupt w/o lapic_in_kernel Wanpeng Li
2019-09-11 16:26   ` Paolo Bonzini

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