From: "Radim Krčmář" <rkrcmar@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Subject: Re: [PATCH 1/6] KVM: vmx: clear pending interrupts on KVM_SET_LAPIC
Date: Tue, 7 Feb 2017 18:42:36 +0100 [thread overview]
Message-ID: <20170207174236.GA31091@potion> (raw)
In-Reply-To: <1482164232-130035-2-git-send-email-pbonzini@redhat.com>
2016-12-19 17:17+0100, Paolo Bonzini:
> Pending interrupts might be in the PI descriptor when the
> LAPIC is restored from an external state; we do not want
> them to be injected.
>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
> arch/x86/kvm/lapic.c | 3 +--
> arch/x86/kvm/vmx.c | 9 +++++++++
> 2 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
> index 4dc02482faf7..5fa546e27b7e 100644
> --- a/arch/x86/kvm/lapic.c
> +++ b/arch/x86/kvm/lapic.c
> @@ -2185,8 +2185,7 @@ int kvm_apic_set_state(struct kvm_vcpu *vcpu, struct kvm_lapic_state *s)
> 1 : count_vectors(apic->regs + APIC_ISR);
> apic->highest_isr_cache = -1;
> if (vcpu->arch.apicv_active) {
> - if (kvm_x86_ops->apicv_post_state_restore)
> - kvm_x86_ops->apicv_post_state_restore(vcpu);
> + kvm_x86_ops->apicv_post_state_restore(vcpu);
> kvm_x86_ops->hwapic_irr_update(vcpu,
> apic_find_highest_irr(apic));
> kvm_x86_ops->hwapic_isr_update(vcpu,
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index 1ba7aaf6ae7f..661956caf162 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -8761,6 +8761,14 @@ static void vmx_load_eoi_exitmap(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap)
> vmcs_write64(EOI_EXIT_BITMAP3, eoi_exit_bitmap[3]);
> }
>
> +static void vmx_apicv_post_state_restore(struct kvm_vcpu *vcpu)
> +{
> + struct vcpu_vmx *vmx = to_vmx(vcpu);
> +
> + pi_clear_on(&vmx->pi_desc);
> + memset(vmx->pi_desc.pir, 0, sizeof(vmx->pi_desc.pir));
> +}
> +
> static void vmx_complete_atomic_exit(struct vcpu_vmx *vmx)
> {
> u32 exit_intr_info;
> @@ -11590,6 +11598,7 @@ static void vmx_setup_mce(struct kvm_vcpu *vcpu)
> .get_enable_apicv = vmx_get_enable_apicv,
> .refresh_apicv_exec_ctrl = vmx_refresh_apicv_exec_ctrl,
> .load_eoi_exitmap = vmx_load_eoi_exitmap,
> + .apicv_post_state_restore = vmx_apicv_post_state_restore,
> .hwapic_irr_update = vmx_hwapic_irr_update,
> .hwapic_isr_update = vmx_hwapic_isr_update,
> .sync_pir_to_irr = vmx_sync_pir_to_irr,
> --
> 1.8.3.1
>
>
> --
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next prev parent reply other threads:[~2017-02-07 17:42 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-19 16:17 [PATCH v2 0/6] KVM: x86: cleanup and speedup for APICv Paolo Bonzini
2016-12-19 16:17 ` [PATCH 1/6] KVM: vmx: clear pending interrupts on KVM_SET_LAPIC Paolo Bonzini
2017-02-07 17:42 ` Radim Krčmář [this message]
2016-12-19 16:17 ` [PATCH 2/6] kvm: nVMX: move nested events check to kvm_vcpu_running Paolo Bonzini
2017-02-07 18:16 ` Radim Krčmář
2016-12-19 16:17 ` [PATCH 3/6] KVM: x86: preparatory changes for APICv cleanups Paolo Bonzini
2017-02-07 18:20 ` Radim Krčmář
2016-12-19 16:17 ` [PATCH 4/6] KVM: vmx: move sync_pir_to_irr from apic_find_highest_irr to callers Paolo Bonzini
2016-12-19 16:17 ` [PATCH 5/6] KVM: x86: do not scan IRR twice on APICv vmentry Paolo Bonzini
2017-02-07 20:19 ` Radim Krčmář
2017-02-07 21:49 ` Radim Krčmář
2017-02-08 14:10 ` Paolo Bonzini
2017-02-08 14:24 ` Radim Krčmář
2016-12-19 16:17 ` [PATCH 6/6] kvm: x86: do not use KVM_REQ_EVENT for APICv interrupt injection Paolo Bonzini
2017-02-07 19:58 ` Radim Krčmář
2017-02-08 16:23 ` Paolo Bonzini
2017-02-09 15:11 ` Radim Krčmář
2017-03-09 1:23 ` Wanpeng Li
2017-03-09 9:40 ` Wanpeng Li
2017-03-09 10:03 ` Paolo Bonzini
2017-02-07 17:23 ` [PATCH v2 0/6] KVM: x86: cleanup and speedup for APICv Paolo Bonzini
2017-02-07 21:52 ` Radim Krčmář
2017-02-08 10:04 ` Paolo Bonzini
2017-02-08 13:33 ` Radim Krčmář
2017-02-08 15:01 ` Paolo Bonzini
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