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

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Message-ID: <d7b46861-2787-f8c0-fa84-5368235db830@redhat.com>
Date:   Wed, 11 Sep 2019 18:06:01 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Wanpeng Li <kernellwp@...il.com>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Cc:     Radim Krčmář <rkrcmar@...hat.com>
Subject: Re: [PATCH 2/2] KVM: VMX: Stop the preemption timer during vCPU reset

On 05/09/19 08:26, Wanpeng Li wrote:
> 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) {
> 

Queued both, thanks.

Paolo