1 #ifndef __KVM_X86_LAPIC_H
2 #define __KVM_X86_LAPIC_H
6 #include <linux/kvm_host.h>
8 #define KVM_APIC_INIT 0
9 #define KVM_APIC_SIPI 1
13 s64 period; /* unit: ns */
17 u64 expired_tscdeadline;
18 atomic_t pending; /* accumulated triggered timers */
22 unsigned long base_address;
23 struct kvm_io_device dev;
24 struct kvm_timer lapic_timer;
26 struct kvm_vcpu *vcpu;
29 bool lvt0_in_nmi_mode;
30 /* Number of bits set in ISR. */
32 /* The highest vector set in ISR; if -1 - invalid, must scan ISR. */
33 int highest_isr_cache;
35 * APIC register page. The layout matches the register layout seen by
36 * the guest 1:1, because it is accessed by the vmx microcode.
37 * Note: Only one register, the TPR, is used by the microcode.
41 struct gfn_to_hva_cache vapic_cache;
42 unsigned long pending_events;
43 unsigned int sipi_vector;
45 int kvm_create_lapic(struct kvm_vcpu *vcpu);
46 void kvm_free_lapic(struct kvm_vcpu *vcpu);
48 int kvm_apic_has_interrupt(struct kvm_vcpu *vcpu);
49 int kvm_apic_accept_pic_intr(struct kvm_vcpu *vcpu);
50 int kvm_get_apic_interrupt(struct kvm_vcpu *vcpu);
51 void kvm_apic_accept_events(struct kvm_vcpu *vcpu);
52 void kvm_lapic_reset(struct kvm_vcpu *vcpu, bool init_event);
53 u64 kvm_lapic_get_cr8(struct kvm_vcpu *vcpu);
54 void kvm_lapic_set_tpr(struct kvm_vcpu *vcpu, unsigned long cr8);
55 void kvm_lapic_set_eoi(struct kvm_vcpu *vcpu);
56 void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value);
57 u64 kvm_lapic_get_base(struct kvm_vcpu *vcpu);
58 void kvm_apic_set_version(struct kvm_vcpu *vcpu);
60 void __kvm_apic_update_irr(u32 *pir, void *regs);
61 void kvm_apic_update_irr(struct kvm_vcpu *vcpu, u32 *pir);
62 int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq,
63 unsigned long *dest_map);
64 int kvm_apic_local_deliver(struct kvm_lapic *apic, int lvt_type);
66 bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
67 struct kvm_lapic_irq *irq, int *r, unsigned long *dest_map);
69 u64 kvm_get_apic_base(struct kvm_vcpu *vcpu);
70 int kvm_set_apic_base(struct kvm_vcpu *vcpu, struct msr_data *msr_info);
71 void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu,
72 struct kvm_lapic_state *s);
73 int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu);
75 u64 kvm_get_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu);
76 void kvm_set_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu, u64 data);
78 void kvm_apic_write_nodecode(struct kvm_vcpu *vcpu, u32 offset);
79 void kvm_apic_set_eoi_accelerated(struct kvm_vcpu *vcpu, int vector);
81 int kvm_lapic_set_vapic_addr(struct kvm_vcpu *vcpu, gpa_t vapic_addr);
82 void kvm_lapic_sync_from_vapic(struct kvm_vcpu *vcpu);
83 void kvm_lapic_sync_to_vapic(struct kvm_vcpu *vcpu);
85 int kvm_x2apic_msr_write(struct kvm_vcpu *vcpu, u32 msr, u64 data);
86 int kvm_x2apic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
88 int kvm_hv_vapic_msr_write(struct kvm_vcpu *vcpu, u32 msr, u64 data);
89 int kvm_hv_vapic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data);
91 static inline bool kvm_hv_vapic_assist_page_enabled(struct kvm_vcpu *vcpu)
93 return vcpu->arch.hyperv.hv_vapic & HV_X64_MSR_APIC_ASSIST_PAGE_ENABLE;
96 int kvm_lapic_enable_pv_eoi(struct kvm_vcpu *vcpu, u64 data);
97 void kvm_lapic_init(void);
98 void kvm_lapic_exit(void);
100 static inline u32 kvm_apic_get_reg(struct kvm_lapic *apic, int reg_off)
102 return *((u32 *) (apic->regs + reg_off));
105 extern struct static_key kvm_no_apic_vcpu;
107 static inline bool kvm_vcpu_has_lapic(struct kvm_vcpu *vcpu)
109 if (static_key_false(&kvm_no_apic_vcpu))
110 return vcpu->arch.apic;
114 extern struct static_key_deferred apic_hw_disabled;
116 static inline int kvm_apic_hw_enabled(struct kvm_lapic *apic)
118 if (static_key_false(&apic_hw_disabled.key))
119 return apic->vcpu->arch.apic_base & MSR_IA32_APICBASE_ENABLE;
120 return MSR_IA32_APICBASE_ENABLE;
123 extern struct static_key_deferred apic_sw_disabled;
125 static inline bool kvm_apic_sw_enabled(struct kvm_lapic *apic)
127 if (static_key_false(&apic_sw_disabled.key))
128 return apic->sw_enabled;
132 static inline bool kvm_apic_present(struct kvm_vcpu *vcpu)
134 return kvm_vcpu_has_lapic(vcpu) && kvm_apic_hw_enabled(vcpu->arch.apic);
137 static inline int kvm_lapic_enabled(struct kvm_vcpu *vcpu)
139 return kvm_apic_present(vcpu) && kvm_apic_sw_enabled(vcpu->arch.apic);
142 static inline int apic_x2apic_mode(struct kvm_lapic *apic)
144 return apic->vcpu->arch.apic_base & X2APIC_ENABLE;
147 static inline bool kvm_vcpu_apic_vid_enabled(struct kvm_vcpu *vcpu)
149 return kvm_x86_ops->cpu_uses_apicv(vcpu);
152 static inline bool kvm_apic_has_events(struct kvm_vcpu *vcpu)
154 return kvm_vcpu_has_lapic(vcpu) && vcpu->arch.apic->pending_events;
157 static inline bool kvm_lowest_prio_delivery(struct kvm_lapic_irq *irq)
159 return (irq->delivery_mode == APIC_DM_LOWEST ||
160 irq->msi_redir_hint);
163 static inline int kvm_lapic_latched_init(struct kvm_vcpu *vcpu)
165 return kvm_vcpu_has_lapic(vcpu) && test_bit(KVM_APIC_INIT, &vcpu->arch.apic->pending_events);
168 bool kvm_apic_pending_eoi(struct kvm_vcpu *vcpu, int vector);
170 void wait_lapic_expire(struct kvm_vcpu *vcpu);
172 bool kvm_intr_is_single_vcpu_fast(struct kvm *kvm, struct kvm_lapic_irq *irq,
173 struct kvm_vcpu **dest_vcpu);