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Thu, 15 Aug 2019 16:25:09 +0000 From: "Suthikulpanit, Suravee" To: "linux-kernel@vger.kernel.org" , "kvm@vger.kernel.org" CC: "pbonzini@redhat.com" , "rkrcmar@redhat.com" , "joro@8bytes.org" , "graf@amazon.com" , "jschoenh@amazon.de" , "karahmed@amazon.de" , "rimasluk@amazon.com" , "Grimm, Jon" , "Suthikulpanit, Suravee" Subject: [PATCH v2 05/15] kvm: lapic: Introduce APICv update helper function Thread-Topic: [PATCH v2 05/15] kvm: lapic: Introduce APICv update helper function Thread-Index: AQHVU4YBcPSQVrB880myyMRcT79ZPw== Date: Thu, 15 Aug 2019 16:25:08 +0000 Message-ID: <1565886293-115836-6-git-send-email-suravee.suthikulpanit@amd.com> References: <1565886293-115836-1-git-send-email-suravee.suthikulpanit@amd.com> In-Reply-To: <1565886293-115836-1-git-send-email-suravee.suthikulpanit@amd.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [165.204.78.1] x-clientproxiedby: SN6PR04CA0084.namprd04.prod.outlook.com (2603:10b6:805:f2::25) To DM6PR12MB2844.namprd12.prod.outlook.com (2603:10b6:5:45::32) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Suravee.Suthikulpanit@amd.com; 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received-spf: None (protection.outlook.com: amd.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: zT3q5bfEx1c+1e8MCyW7ICoQKl+CGsOrhr0XJ7jJAd8PP5gIbwkDFGr7a/6JkgmWsYAbA3hdvFRCl6TRRqL5kSl0NkQtUipD9o/droUwMRoP2mUv7HzSL3ydElqnztJuq0kfk+dIzkzj6ExAs5CaArj6nzrn7BweppVVBvXc8vFfq7GAZxFOeq1hkVRpPv2odYuiBxeN6+dXSLkYHcA9zKokxQh5zmIlPEYcH52ATdguysqWMn2jIF+82OVxNr7ett4+XILtGZPaxRLvUFnxslBBmRRw5wXX0KwTGPkgFwd4DCfNdgOGYE2Ykv3Vfw93YDQeuf1OZYqN4hZxZ/1H0B4Mh+Nd0qg19k1DOd5WEVuFz6qSWcP2xIqUKseeKYVbXp4JLQMBGUpNMiQ9TL6974Z+HiQUQWax4B+0Hfpv9rQ= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2580d735-b427-432b-f57a-08d7219d23aa X-MS-Exchange-CrossTenant-originalarrivaltime: 15 Aug 2019 16:25:08.9962 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: IZCVQZ8Hrwq0jncR9KNulTImSl7MBViEn1hdM9NgpF/rgo/zBrVYqJd1kID3f7xbR+FEXB3zmKYVw9/7RXq0sA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB3897 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- 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 v= alue) =20 } =20 +void kvm_apic_update_apicv(struct kvm_vcpu *vcpu) +{ + struct kvm_lapic *apic =3D vcpu->arch.apic; + + if (vcpu->arch.apicv_active) { + /* irr_pending is always true when apicv is activated. */ + apic->irr_pending =3D true; + apic->isr_count =3D 1; + } else { + apic->irr_pending =3D (apic_search_irr(apic) !=3D -1); + apic->isr_count =3D count_vectors(apic->regs + APIC_ISR); + } +} +EXPORT_SYMBOL(kvm_apic_update_apicv); + void kvm_lapic_reset(struct kvm_vcpu *vcpu, bool init_event) { struct kvm_lapic *apic =3D 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 =3D vcpu->arch.apicv_active; - apic->isr_count =3D vcpu->arch.apicv_active ? 1 : 0; + kvm_apic_update_apicv(vcpu); apic->highest_isr_cache =3D -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 =3D true; - apic->isr_count =3D vcpu->arch.apicv_active ? - 1 : count_vectors(apic->regs + APIC_ISR); + kvm_apic_update_apicv(vcpu); apic->highest_isr_cache =3D -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 kv= m_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); =20 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); --=20 1.8.3.1