From: Yang Zhang Date: Thu, 11 Apr 2013 11:25:13 +0000 (+0800) Subject: KVM: Call common update function when ioapic entry changed. X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3d81bc7e96d6bca0b8f8b7d1bf6ea72caa3aac57;p=linux-beck.git KVM: Call common update function when ioapic entry changed. 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 Reviewed-by: Gleb Natapov Signed-off-by: Marcelo Tosatti --- diff --git a/arch/ia64/kvm/lapic.h b/arch/ia64/kvm/lapic.h index c3e2935b6db4..c5f92a926a9a 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 67962188c775..34a8ca845280 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -217,7 +217,7 @@ 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/vmx.c b/arch/x86/kvm/vmx.c index 7607c6c09c74..8535519d0352 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -6414,6 +6414,9 @@ 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 1562671a8e18..87a05df3eae4 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5661,13 +5661,16 @@ 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 (!kvm_apic_hw_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); } @@ -5724,8 +5727,8 @@ 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 4a76aca31478..93a50054d46c 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 @@ -575,7 +575,7 @@ 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 97c67a50f904..f2157a985a1f 100644 --- a/virt/kvm/ioapic.c +++ b/virt/kvm/ioapic.c @@ -193,15 +193,13 @@ 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 && @@ -215,16 +213,22 @@ 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) { @@ -267,7 +271,7 @@ 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; } } @@ -586,7 +590,7 @@ 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 554157bbb586..674a388612b4 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 8efb580edfef..25ab48007adb 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 ac3182eed462..65a9e0716a8d 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)