linux-kernel - Re: [PATCH 2/3] KVM: x86: properly restore LVT0

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Message-ID: <5593EB4B.9020601@redhat.com>
Date:	Wed, 1 Jul 2015 15:29:47 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Radim Krčmář <rkrcmar@...hat.com>,
	linux-kernel@...r.kernel.org
Cc:	kvm@...r.kernel.org, Yoshida Nobuo <yoshida.nb@...s.nec.co.jp>
Subject: Re: [PATCH 2/3] KVM: x86: properly restore LVT0



On 30/06/2015 22:19, Radim Krčmář wrote:
> Legacy NMI watchdog didn't work after migration/resume, because
> vapics_in_nmi_mode was left at 0.
> 
> Signed-off-by: Radim Krčmář <rkrcmar@...hat.com>
> ---
>  arch/x86/kvm/lapic.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
> index f49c7cca1de6..8dc32b5a4e0d 100644
> --- a/arch/x86/kvm/lapic.c
> +++ b/arch/x86/kvm/lapic.c
> @@ -1824,6 +1824,7 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu,
>  	apic_update_ppr(apic);
>  	hrtimer_cancel(&apic->lapic_timer.timer);
>  	apic_update_lvtt(apic);
> +	apic_manage_nmi_watchdog(apic, kvm_apic_get_reg(apic, APIC_LVT0));
>  	update_divide_count(apic);
>  	start_apic_timer(apic);
>  	apic->irr_pending = true;
> 

Applied already, with Cc: stable, as it is not related to APICv.

Paolo
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