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
10 #define KVM_APIC_LVT_NUM 6
12 #define KVM_APIC_SHORT_MASK 0xc0000
13 #define KVM_APIC_DEST_MASK 0x800
17 s64 period
; /* unit: ns */
21 u64 expired_tscdeadline
;
22 atomic_t pending
; /* accumulated triggered timers */
26 unsigned long base_address
;
27 struct kvm_io_device dev
;
28 struct kvm_timer lapic_timer
;
30 struct kvm_vcpu
*vcpu
;
33 bool lvt0_in_nmi_mode
;
34 /* Number of bits set in ISR. */
36 /* The highest vector set in ISR; if -1 - invalid, must scan ISR. */
37 int highest_isr_cache
;
39 * APIC register page. The layout matches the register layout seen by
40 * the guest 1:1, because it is accessed by the vmx microcode.
41 * Note: Only one register, the TPR, is used by the microcode.
45 struct gfn_to_hva_cache vapic_cache
;
46 unsigned long pending_events
;
47 unsigned int sipi_vector
;
52 int kvm_create_lapic(struct kvm_vcpu
*vcpu
);
53 void kvm_free_lapic(struct kvm_vcpu
*vcpu
);
55 int kvm_apic_has_interrupt(struct kvm_vcpu
*vcpu
);
56 int kvm_apic_accept_pic_intr(struct kvm_vcpu
*vcpu
);
57 int kvm_get_apic_interrupt(struct kvm_vcpu
*vcpu
);
58 void kvm_apic_accept_events(struct kvm_vcpu
*vcpu
);
59 void kvm_lapic_reset(struct kvm_vcpu
*vcpu
, bool init_event
);
60 u64
kvm_lapic_get_cr8(struct kvm_vcpu
*vcpu
);
61 void kvm_lapic_set_tpr(struct kvm_vcpu
*vcpu
, unsigned long cr8
);
62 void kvm_lapic_set_eoi(struct kvm_vcpu
*vcpu
);
63 void kvm_lapic_set_base(struct kvm_vcpu
*vcpu
, u64 value
);
64 u64
kvm_lapic_get_base(struct kvm_vcpu
*vcpu
);
65 void kvm_apic_set_version(struct kvm_vcpu
*vcpu
);
66 int kvm_lapic_reg_write(struct kvm_lapic
*apic
, u32 reg
, u32 val
);
67 int kvm_lapic_reg_read(struct kvm_lapic
*apic
, u32 offset
, int len
,
69 bool kvm_apic_match_dest(struct kvm_vcpu
*vcpu
, struct kvm_lapic
*source
,
70 int short_hand
, unsigned int dest
, int dest_mode
);
72 void __kvm_apic_update_irr(u32
*pir
, void *regs
);
73 void kvm_apic_update_irr(struct kvm_vcpu
*vcpu
, u32
*pir
);
74 int kvm_apic_set_irq(struct kvm_vcpu
*vcpu
, struct kvm_lapic_irq
*irq
,
75 struct dest_map
*dest_map
);
76 int kvm_apic_local_deliver(struct kvm_lapic
*apic
, int lvt_type
);
78 bool kvm_irq_delivery_to_apic_fast(struct kvm
*kvm
, struct kvm_lapic
*src
,
79 struct kvm_lapic_irq
*irq
, int *r
, struct dest_map
*dest_map
);
81 u64
kvm_get_apic_base(struct kvm_vcpu
*vcpu
);
82 int kvm_set_apic_base(struct kvm_vcpu
*vcpu
, struct msr_data
*msr_info
);
83 void kvm_apic_post_state_restore(struct kvm_vcpu
*vcpu
,
84 struct kvm_lapic_state
*s
);
85 int kvm_lapic_find_highest_irr(struct kvm_vcpu
*vcpu
);
87 u64
kvm_get_lapic_tscdeadline_msr(struct kvm_vcpu
*vcpu
);
88 void kvm_set_lapic_tscdeadline_msr(struct kvm_vcpu
*vcpu
, u64 data
);
90 void kvm_apic_write_nodecode(struct kvm_vcpu
*vcpu
, u32 offset
);
91 void kvm_apic_set_eoi_accelerated(struct kvm_vcpu
*vcpu
, int vector
);
93 int kvm_lapic_set_vapic_addr(struct kvm_vcpu
*vcpu
, gpa_t vapic_addr
);
94 void kvm_lapic_sync_from_vapic(struct kvm_vcpu
*vcpu
);
95 void kvm_lapic_sync_to_vapic(struct kvm_vcpu
*vcpu
);
97 int kvm_x2apic_msr_write(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
);
98 int kvm_x2apic_msr_read(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*data
);
100 int kvm_hv_vapic_msr_write(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
);
101 int kvm_hv_vapic_msr_read(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*data
);
103 static inline bool kvm_hv_vapic_assist_page_enabled(struct kvm_vcpu
*vcpu
)
105 return vcpu
->arch
.hyperv
.hv_vapic
& HV_X64_MSR_APIC_ASSIST_PAGE_ENABLE
;
108 int kvm_lapic_enable_pv_eoi(struct kvm_vcpu
*vcpu
, u64 data
);
109 void kvm_lapic_init(void);
111 #define VEC_POS(v) ((v) & (32 - 1))
112 #define REG_POS(v) (((v) >> 5) << 4)
114 static inline void kvm_lapic_set_vector(int vec
, void *bitmap
)
116 set_bit(VEC_POS(vec
), (bitmap
) + REG_POS(vec
));
119 static inline void kvm_lapic_set_irr(int vec
, struct kvm_lapic
*apic
)
121 kvm_lapic_set_vector(vec
, apic
->regs
+ APIC_IRR
);
123 * irr_pending must be true if any interrupt is pending; set it after
124 * APIC_IRR to avoid race with apic_clear_irr
126 apic
->irr_pending
= true;
129 static inline u32
kvm_lapic_get_reg(struct kvm_lapic
*apic
, int reg_off
)
131 return *((u32
*) (apic
->regs
+ reg_off
));
134 static inline void kvm_lapic_set_reg(struct kvm_lapic
*apic
, int reg_off
, u32 val
)
136 *((u32
*) (apic
->regs
+ reg_off
)) = val
;
139 extern struct static_key kvm_no_apic_vcpu
;
141 static inline bool lapic_in_kernel(struct kvm_vcpu
*vcpu
)
143 if (static_key_false(&kvm_no_apic_vcpu
))
144 return vcpu
->arch
.apic
;
148 extern struct static_key_deferred apic_hw_disabled
;
150 static inline int kvm_apic_hw_enabled(struct kvm_lapic
*apic
)
152 if (static_key_false(&apic_hw_disabled
.key
))
153 return apic
->vcpu
->arch
.apic_base
& MSR_IA32_APICBASE_ENABLE
;
154 return MSR_IA32_APICBASE_ENABLE
;
157 extern struct static_key_deferred apic_sw_disabled
;
159 static inline bool kvm_apic_sw_enabled(struct kvm_lapic
*apic
)
161 if (static_key_false(&apic_sw_disabled
.key
))
162 return apic
->sw_enabled
;
166 static inline bool kvm_apic_present(struct kvm_vcpu
*vcpu
)
168 return lapic_in_kernel(vcpu
) && kvm_apic_hw_enabled(vcpu
->arch
.apic
);
171 static inline int kvm_lapic_enabled(struct kvm_vcpu
*vcpu
)
173 return kvm_apic_present(vcpu
) && kvm_apic_sw_enabled(vcpu
->arch
.apic
);
176 static inline int apic_x2apic_mode(struct kvm_lapic
*apic
)
178 return apic
->vcpu
->arch
.apic_base
& X2APIC_ENABLE
;
181 static inline bool kvm_vcpu_apicv_active(struct kvm_vcpu
*vcpu
)
183 return vcpu
->arch
.apic
&& vcpu
->arch
.apicv_active
;
186 static inline bool kvm_apic_has_events(struct kvm_vcpu
*vcpu
)
188 return lapic_in_kernel(vcpu
) && vcpu
->arch
.apic
->pending_events
;
191 static inline bool kvm_lowest_prio_delivery(struct kvm_lapic_irq
*irq
)
193 return (irq
->delivery_mode
== APIC_DM_LOWEST
||
194 irq
->msi_redir_hint
);
197 static inline int kvm_lapic_latched_init(struct kvm_vcpu
*vcpu
)
199 return lapic_in_kernel(vcpu
) && test_bit(KVM_APIC_INIT
, &vcpu
->arch
.apic
->pending_events
);
202 static inline int kvm_apic_id(struct kvm_lapic
*apic
)
204 return (kvm_lapic_get_reg(apic
, APIC_ID
) >> 24) & 0xff;
207 bool kvm_apic_pending_eoi(struct kvm_vcpu
*vcpu
, int vector
);
209 void wait_lapic_expire(struct kvm_vcpu
*vcpu
);
211 bool kvm_intr_is_single_vcpu_fast(struct kvm
*kvm
, struct kvm_lapic_irq
*irq
,
212 struct kvm_vcpu
**dest_vcpu
);
213 int kvm_vector_to_index(u32 vector
, u32 dest_vcpus
,
214 const unsigned long *bitmap
, u32 bitmap_size
);