From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: "Suthikulpanit\, Suravee" <Suravee.Suthikulpanit@amd.com>
Cc: "pbonzini\@redhat.com" <pbonzini@redhat.com>,
"rkrcmar\@redhat.com" <rkrcmar@redhat.com>,
"joro\@8bytes.org" <joro@8bytes.org>,
"graf\@amazon.com" <graf@amazon.com>,
"jschoenh\@amazon.de" <jschoenh@amazon.de>,
"karahmed\@amazon.de" <karahmed@amazon.de>,
"rimasluk\@amazon.com" <rimasluk@amazon.com>, "Grimm\,
Jon" <Jon.Grimm@amd.com>, "Suthikulpanit\,
Suravee" <Suravee.Suthikulpanit@amd.com>,
"linux-kernel\@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kvm\@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [PATCH v2 05/15] kvm: lapic: Introduce APICv update helper function
Date: Tue, 27 Aug 2019 09:22:50 +0200 [thread overview]
Message-ID: <87a7bvm5rp.fsf@vitty.brq.redhat.com> (raw)
In-Reply-To: <1565886293-115836-6-git-send-email-suravee.suthikulpanit@amd.com>
"Suthikulpanit, Suravee" <Suravee.Suthikulpanit@amd.com> writes:
> Re-factor code into a helper function for setting lapic parameters when
> activate/deactivate APICv, and export the function for subsequent usage.
>
> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
> ---
> arch/x86/kvm/lapic.c | 22 +++++++++++++++++-----
> arch/x86/kvm/lapic.h | 1 +
> 2 files changed, 18 insertions(+), 5 deletions(-)
>
> diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
> index 4dabc31..90f79ca 100644
> --- a/arch/x86/kvm/lapic.c
> +++ b/arch/x86/kvm/lapic.c
> @@ -2153,6 +2153,21 @@ void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value)
>
> }
>
> +void kvm_apic_update_apicv(struct kvm_vcpu *vcpu)
> +{
> + struct kvm_lapic *apic = vcpu->arch.apic;
> +
> + if (vcpu->arch.apicv_active) {
> + /* irr_pending is always true when apicv is activated. */
> + apic->irr_pending = true;
> + apic->isr_count = 1;
> + } else {
> + apic->irr_pending = (apic_search_irr(apic) != -1);
> + apic->isr_count = count_vectors(apic->regs + APIC_ISR);
> + }
> +}
> +EXPORT_SYMBOL(kvm_apic_update_apicv);
EXPORT_SYMBOL_GPL please.
> +
> void kvm_lapic_reset(struct kvm_vcpu *vcpu, bool init_event)
> {
> struct kvm_lapic *apic = vcpu->arch.apic;
> @@ -2197,8 +2212,7 @@ void kvm_lapic_reset(struct kvm_vcpu *vcpu, bool init_event)
> kvm_lapic_set_reg(apic, APIC_ISR + 0x10 * i, 0);
> kvm_lapic_set_reg(apic, APIC_TMR + 0x10 * i, 0);
> }
> - apic->irr_pending = vcpu->arch.apicv_active;
> - apic->isr_count = vcpu->arch.apicv_active ? 1 : 0;
> + kvm_apic_update_apicv(vcpu);
> apic->highest_isr_cache = -1;
> update_divide_count(apic);
> atomic_set(&apic->lapic_timer.pending, 0);
> @@ -2468,9 +2482,7 @@ int kvm_apic_set_state(struct kvm_vcpu *vcpu, struct kvm_lapic_state *s)
> apic_manage_nmi_watchdog(apic, kvm_lapic_get_reg(apic, APIC_LVT0));
> update_divide_count(apic);
> start_apic_timer(apic);
> - apic->irr_pending = true;
> - apic->isr_count = vcpu->arch.apicv_active ?
> - 1 : count_vectors(apic->regs + APIC_ISR);
> + kvm_apic_update_apicv(vcpu);
> apic->highest_isr_cache = -1;
> if (vcpu->arch.apicv_active) {
> kvm_x86_ops->apicv_post_state_restore(vcpu);
> diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
> index d6d049b..3892d50 100644
> --- a/arch/x86/kvm/lapic.h
> +++ b/arch/x86/kvm/lapic.h
> @@ -90,6 +90,7 @@ bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
> int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq,
> struct dest_map *dest_map);
> int kvm_apic_local_deliver(struct kvm_lapic *apic, int lvt_type);
> +void kvm_apic_update_apicv(struct kvm_vcpu *vcpu);
>
> bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
> struct kvm_lapic_irq *irq, int *r, struct dest_map *dest_map);
--
Vitaly
next prev parent reply other threads:[~2019-08-27 7:22 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-15 16:25 [PATCH v2 00/15] kvm: x86: Support AMD SVM AVIC w/ in-kernel irqchip mode Suthikulpanit, Suravee
2019-08-15 16:25 ` [PATCH v2 01/15] kvm: x86: Modify kvm_x86_ops.get_enable_apicv() to use struct kvm parameter Suthikulpanit, Suravee
2019-08-27 7:15 ` Vitaly Kuznetsov
2019-08-15 16:25 ` [PATCH v2 02/15] kvm: x86: Introduce KVM APICv state Suthikulpanit, Suravee
2019-08-19 9:49 ` Alexander Graf
2019-08-26 19:06 ` Suthikulpanit, Suravee
2019-08-15 16:25 ` [PATCH v2 03/15] kvm: Add arch-specific per-VM debugfs support Suthikulpanit, Suravee
2019-08-15 16:25 ` [PATCH v2 04/15] kvm: x86: Add per-VM APICv state debugfs Suthikulpanit, Suravee
2019-08-19 9:57 ` Alexander Graf
2019-08-26 19:41 ` Suthikulpanit, Suravee
2019-08-27 8:20 ` Alexander Graf
2019-08-28 18:39 ` Suthikulpanit, Suravee
2019-08-28 19:36 ` Graf (AWS), Alexander
2019-08-15 16:25 ` [PATCH v2 05/15] kvm: lapic: Introduce APICv update helper function Suthikulpanit, Suravee
2019-08-27 7:22 ` Vitaly Kuznetsov [this message]
2019-08-15 16:25 ` [PATCH v2 06/15] kvm: x86: Add support for activate/de-activate APICv at runtime Suthikulpanit, Suravee
2019-08-27 7:29 ` Vitaly Kuznetsov
2019-08-27 8:05 ` Alexander Graf
2019-08-15 16:25 ` [PATCH v2 07/15] kvm: x86: svm: Add support to activate/deactivate posted interrupts Suthikulpanit, Suravee
2019-08-15 16:25 ` [PATCH v2 08/15] svm: Add support for setup/destroy virutal APIC backing page for AVIC Suthikulpanit, Suravee
2019-08-15 16:25 ` [PATCH v2 09/15] svm: Add support for activate/deactivate AVIC at runtime Suthikulpanit, Suravee
2019-08-19 10:28 ` Alexander Graf
2019-08-15 16:25 ` [PATCH v2 10/15] kvm: x86: hyperv: Use APICv deactivate request interface Suthikulpanit, Suravee
2019-08-19 10:31 ` Alexander Graf
2019-08-15 16:25 ` [PATCH v2 11/15] svm: Temporary deactivate AVIC during ExtINT handling Suthikulpanit, Suravee
2019-08-19 10:35 ` Alexander Graf
2019-08-28 15:17 ` Suthikulpanit, Suravee
2019-08-28 19:37 ` Graf (AWS), Alexander
2019-09-10 15:46 ` Suthikulpanit, Suravee
2019-08-15 16:25 ` [PATCH v2 12/15] kvm: i8254: Check LAPIC EOI pending when injecting irq on SVM AVIC Suthikulpanit, Suravee
2019-08-19 10:42 ` Alexander Graf
2019-08-26 20:46 ` Suthikulpanit, Suravee
2019-08-27 9:10 ` Alexander Graf
2019-09-13 14:50 ` Suthikulpanit, Suravee
2019-08-15 16:25 ` [PATCH v2 13/15] kvm: lapic: Clean up APIC predefined macros Suthikulpanit, Suravee
2019-08-15 16:25 ` [PATCH v2 14/15] kvm: ioapic: Delay update IOAPIC EOI for RTC Suthikulpanit, Suravee
2019-08-19 11:00 ` Alexander Graf
2019-09-04 2:06 ` Suthikulpanit, Suravee
2019-08-15 16:25 ` [PATCH v2 15/15] svm: Allow AVIC with in-kernel irqchip mode Suthikulpanit, Suravee
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