From patchwork Wed Apr 10 13:22:54 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zhang, Yang Z" X-Patchwork-Id: 2421241 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id F13CD3FCA5 for ; Wed, 10 Apr 2013 13:27:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935459Ab3DJN1c (ORCPT ); Wed, 10 Apr 2013 09:27:32 -0400 Received: from mga01.intel.com ([192.55.52.88]:39321 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754678Ab3DJN1b (ORCPT ); Wed, 10 Apr 2013 09:27:31 -0400 Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 10 Apr 2013 06:27:30 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,447,1363158000"; d="scan'208";a="320299559" Received: from yang-desktop.sh.intel.com ([10.239.47.153]) by fmsmga002.fm.intel.com with ESMTP; 10 Apr 2013 06:27:28 -0700 From: Yang Zhang To: kvm@vger.kernel.org Cc: gleb@redhat.com, mtosatti@redhat.com, xiantao.zhang@intel.com, jun.nakajima@intel.com, Yang Zhang Subject: [PATCH v9 4/7] KVM: Call common update function when ioapic entry changed. Date: Wed, 10 Apr 2013 21:22:54 +0800 Message-Id: <1365600177-8506-5-git-send-email-yang.z.zhang@intel.com> X-Mailer: git-send-email 1.7.1.1 In-Reply-To: <1365600177-8506-1-git-send-email-yang.z.zhang@intel.com> References: <1365600177-8506-1-git-send-email-yang.z.zhang@intel.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Yang Zhang Both TMR and EOI exit bitmap need to be updated when ioapic changed or vcpu's id/ldr/dfr changed. So use common function instead eoi exit bitmap specific function. Signed-off-by: Yang Zhang --- arch/ia64/kvm/lapic.h | 6 ------ arch/x86/kvm/lapic.c | 8 ++------ arch/x86/kvm/lapic.h | 5 +++++ arch/x86/kvm/vmx.c | 3 +++ arch/x86/kvm/x86.c | 11 +++++++---- include/linux/kvm_host.h | 4 ++-- virt/kvm/ioapic.c | 22 +++++++++++++--------- virt/kvm/ioapic.h | 6 ++---- virt/kvm/irq_comm.c | 4 ++-- virt/kvm/kvm_main.c | 4 ++-- 10 files changed, 38 insertions(+), 35 deletions(-) diff --git a/arch/ia64/kvm/lapic.h b/arch/ia64/kvm/lapic.h index c3e2935..c5f92a9 100644 --- a/arch/ia64/kvm/lapic.h +++ b/arch/ia64/kvm/lapic.h @@ -27,10 +27,4 @@ int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq); #define kvm_apic_present(x) (true) #define kvm_lapic_enabled(x) (true) -static inline bool kvm_apic_vid_enabled(void) -{ - /* IA64 has no apicv supporting, do nothing here */ - return false; -} - #endif diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 6796218..4ccdc94 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -134,11 +134,7 @@ static inline void apic_set_spiv(struct kvm_lapic *apic, u32 val) static_key_slow_inc(&apic_sw_disabled.key); } apic_set_reg(apic, APIC_SPIV, val); -} - -static inline int apic_enabled(struct kvm_lapic *apic) -{ - return kvm_apic_sw_enabled(apic) && kvm_apic_hw_enabled(apic); + kvm_make_request(KVM_REQ_SCAN_IOAPIC, apic->vcpu); } #define LVT_MASK \ @@ -217,7 +213,7 @@ out: if (old) kfree_rcu(old, rcu); - kvm_ioapic_make_eoibitmap_request(kvm); + kvm_vcpu_request_scan_ioapic(kvm); } static inline void kvm_apic_set_id(struct kvm_lapic *apic, u8 id) diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h index 16304b1..201f79a 100644 --- a/arch/x86/kvm/lapic.h +++ b/arch/x86/kvm/lapic.h @@ -166,6 +166,11 @@ static inline bool kvm_apic_has_events(struct kvm_vcpu *vcpu) return vcpu->arch.apic->pending_events; } +static inline int apic_enabled(struct kvm_lapic *apic) +{ + return kvm_apic_sw_enabled(apic) && kvm_apic_hw_enabled(apic); +} + bool kvm_apic_pending_eoi(struct kvm_vcpu *vcpu, int vector); #endif diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 05da991..5637a8a 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -6415,6 +6415,9 @@ static void vmx_hwapic_irr_update(struct kvm_vcpu *vcpu, int max_irr) static void vmx_load_eoi_exitmap(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap) { + if (!vmx_vm_has_apicv(vcpu->kvm)) + return; + vmcs_write64(EOI_EXIT_BITMAP0, eoi_exit_bitmap[0]); vmcs_write64(EOI_EXIT_BITMAP1, eoi_exit_bitmap[1]); vmcs_write64(EOI_EXIT_BITMAP2, eoi_exit_bitmap[2]); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 5b146d2..53dc96f 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5649,13 +5649,16 @@ static void kvm_gen_update_masterclock(struct kvm *kvm) #endif } -static void update_eoi_exitmap(struct kvm_vcpu *vcpu) +static void vcpu_scan_ioapic(struct kvm_vcpu *vcpu) { u64 eoi_exit_bitmap[4]; + if (!apic_enabled(vcpu->arch.apic)) + return; + memset(eoi_exit_bitmap, 0, 32); - kvm_ioapic_calculate_eoi_exitmap(vcpu, eoi_exit_bitmap); + kvm_ioapic_scan_entry(vcpu, eoi_exit_bitmap); kvm_x86_ops->load_eoi_exitmap(vcpu, eoi_exit_bitmap); } @@ -5712,8 +5715,8 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu) kvm_handle_pmu_event(vcpu); if (kvm_check_request(KVM_REQ_PMI, vcpu)) kvm_deliver_pmi(vcpu); - if (kvm_check_request(KVM_REQ_EOIBITMAP, vcpu)) - update_eoi_exitmap(vcpu); + if (kvm_check_request(KVM_REQ_SCAN_IOAPIC, vcpu)) + vcpu_scan_ioapic(vcpu); } if (kvm_check_request(KVM_REQ_EVENT, vcpu) || req_int_win) { diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 7bcdb6b..6f49d9d 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -126,7 +126,7 @@ static inline bool is_error_page(struct page *page) #define KVM_REQ_MASTERCLOCK_UPDATE 19 #define KVM_REQ_MCLOCK_INPROGRESS 20 #define KVM_REQ_EPR_EXIT 21 -#define KVM_REQ_EOIBITMAP 22 +#define KVM_REQ_SCAN_IOAPIC 22 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 @@ -572,7 +572,7 @@ void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); void kvm_flush_remote_tlbs(struct kvm *kvm); void kvm_reload_remote_mmus(struct kvm *kvm); void kvm_make_mclock_inprogress_request(struct kvm *kvm); -void kvm_make_update_eoibitmap_request(struct kvm *kvm); +void kvm_make_scan_ioapic_request(struct kvm *kvm); long kvm_arch_dev_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg); diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c index 704a273..47dba95 100644 --- a/virt/kvm/ioapic.c +++ b/virt/kvm/ioapic.c @@ -197,15 +197,13 @@ static void update_handled_vectors(struct kvm_ioapic *ioapic) smp_wmb(); } -void kvm_ioapic_calculate_eoi_exitmap(struct kvm_vcpu *vcpu, - u64 *eoi_exit_bitmap) +void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap) { struct kvm_ioapic *ioapic = vcpu->kvm->arch.vioapic; union kvm_ioapic_redirect_entry *e; int index; spin_lock(&ioapic->lock); - /* traverse ioapic entry to set eoi exit bitmap*/ for (index = 0; index < IOAPIC_NUM_PINS; index++) { e = &ioapic->redirtbl[index]; if (!e->fields.mask && @@ -219,16 +217,22 @@ void kvm_ioapic_calculate_eoi_exitmap(struct kvm_vcpu *vcpu, } spin_unlock(&ioapic->lock); } -EXPORT_SYMBOL_GPL(kvm_ioapic_calculate_eoi_exitmap); -void kvm_ioapic_make_eoibitmap_request(struct kvm *kvm) +#ifdef CONFIG_X86 +void kvm_vcpu_request_scan_ioapic(struct kvm *kvm) { struct kvm_ioapic *ioapic = kvm->arch.vioapic; - if (!kvm_apic_vid_enabled(kvm) || !ioapic) + if (!ioapic) return; - kvm_make_update_eoibitmap_request(kvm); + kvm_make_scan_ioapic_request(kvm); } +#else +void kvm_vcpu_request_scan_ioapic(struct kvm *kvm) +{ + return; +} +#endif static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val) { @@ -271,7 +275,7 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val) if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG && ioapic->irr & (1 << index)) ioapic_service(ioapic, index, false); - kvm_ioapic_make_eoibitmap_request(ioapic->kvm); + kvm_vcpu_request_scan_ioapic(ioapic->kvm); break; } } @@ -591,7 +595,7 @@ int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state) spin_lock(&ioapic->lock); memcpy(ioapic, state, sizeof(struct kvm_ioapic_state)); update_handled_vectors(ioapic); - kvm_ioapic_make_eoibitmap_request(kvm); + kvm_vcpu_request_scan_ioapic(kvm); kvm_rtc_eoi_tracking_restore_all(ioapic); spin_unlock(&ioapic->lock); return 0; diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h index 554157b..674a388 100644 --- a/virt/kvm/ioapic.h +++ b/virt/kvm/ioapic.h @@ -96,9 +96,7 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src, struct kvm_lapic_irq *irq, unsigned long *dest_map); int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state); int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state); -void kvm_ioapic_make_eoibitmap_request(struct kvm *kvm); -void kvm_ioapic_calculate_eoi_exitmap(struct kvm_vcpu *vcpu, - u64 *eoi_exit_bitmap); - +void kvm_vcpu_request_scan_ioapic(struct kvm *kvm); +void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap); #endif diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c index 8efb580..25ab480 100644 --- a/virt/kvm/irq_comm.c +++ b/virt/kvm/irq_comm.c @@ -285,7 +285,7 @@ void kvm_register_irq_ack_notifier(struct kvm *kvm, mutex_lock(&kvm->irq_lock); hlist_add_head_rcu(&kian->link, &kvm->irq_ack_notifier_list); mutex_unlock(&kvm->irq_lock); - kvm_ioapic_make_eoibitmap_request(kvm); + kvm_vcpu_request_scan_ioapic(kvm); } void kvm_unregister_irq_ack_notifier(struct kvm *kvm, @@ -295,7 +295,7 @@ void kvm_unregister_irq_ack_notifier(struct kvm *kvm, hlist_del_init_rcu(&kian->link); mutex_unlock(&kvm->irq_lock); synchronize_rcu(); - kvm_ioapic_make_eoibitmap_request(kvm); + kvm_vcpu_request_scan_ioapic(kvm); } int kvm_request_irq_source_id(struct kvm *kvm) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 6c4842a..8b5c6a8 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -217,9 +217,9 @@ void kvm_make_mclock_inprogress_request(struct kvm *kvm) make_all_cpus_request(kvm, KVM_REQ_MCLOCK_INPROGRESS); } -void kvm_make_update_eoibitmap_request(struct kvm *kvm) +void kvm_make_scan_ioapic_request(struct kvm *kvm) { - make_all_cpus_request(kvm, KVM_REQ_EOIBITMAP); + make_all_cpus_request(kvm, KVM_REQ_SCAN_IOAPIC); } int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id)