1#ifndef ARCH_X86_KVM_X86_H
2#define ARCH_X86_KVM_X86_H
3
4#include <linux/kvm_host.h>
5#include "kvm_cache_regs.h"
6
7static inline void kvm_clear_exception_queue(struct kvm_vcpu *vcpu)
8{
9 vcpu->arch.exception.pending = false;
10}
11
12static inline void kvm_queue_interrupt(struct kvm_vcpu *vcpu, u8 vector,
13 bool soft)
14{
15 vcpu->arch.interrupt.pending = true;
16 vcpu->arch.interrupt.soft = soft;
17 vcpu->arch.interrupt.nr = vector;
18}
19
20static inline void kvm_clear_interrupt_queue(struct kvm_vcpu *vcpu)
21{
22 vcpu->arch.interrupt.pending = false;
23}
24
25static inline bool kvm_event_needs_reinjection(struct kvm_vcpu *vcpu)
26{
27 return vcpu->arch.exception.pending || vcpu->arch.interrupt.pending ||
28 vcpu->arch.nmi_injected;
29}
30
31static inline bool kvm_exception_is_soft(unsigned int nr)
32{
33 return (nr == BP_VECTOR) || (nr == OF_VECTOR);
34}
35
36static inline bool is_protmode(struct kvm_vcpu *vcpu)
37{
38 return kvm_read_cr0_bits(vcpu, X86_CR0_PE);
39}
40
41static inline int is_long_mode(struct kvm_vcpu *vcpu)
42{
43#ifdef CONFIG_X86_64
44 return vcpu->arch.efer & EFER_LMA;
45#else
46 return 0;
47#endif
48}
49
50static inline bool mmu_is_nested(struct kvm_vcpu *vcpu)
51{
52 return vcpu->arch.walk_mmu == &vcpu->arch.nested_mmu;
53}
54
55static inline int is_pae(struct kvm_vcpu *vcpu)
56{
57 return kvm_read_cr4_bits(vcpu, X86_CR4_PAE);
58}
59
60static inline int is_pse(struct kvm_vcpu *vcpu)
61{
62 return kvm_read_cr4_bits(vcpu, X86_CR4_PSE);
63}
64
65static inline int is_paging(struct kvm_vcpu *vcpu)
66{
67 return likely(kvm_read_cr0_bits(vcpu, X86_CR0_PG));
68}
69
70static inline u32 bit(int bitno)
71{
72 return 1 << (bitno & 31);
73}
74
75static inline void vcpu_cache_mmio_info(struct kvm_vcpu *vcpu,
76 gva_t gva, gfn_t gfn, unsigned access)
77{
78 vcpu->arch.mmio_gva = gva & PAGE_MASK;
79 vcpu->arch.access = access;
80 vcpu->arch.mmio_gfn = gfn;
81}
82
83
84
85
86
87static inline void vcpu_clear_mmio_info(struct kvm_vcpu *vcpu, gva_t gva)
88{
89 if (gva != (~0ul) && vcpu->arch.mmio_gva != (gva & PAGE_MASK))
90 return;
91
92 vcpu->arch.mmio_gva = 0;
93}
94
95static inline bool vcpu_match_mmio_gva(struct kvm_vcpu *vcpu, unsigned long gva)
96{
97 if (vcpu->arch.mmio_gva && vcpu->arch.mmio_gva == (gva & PAGE_MASK))
98 return true;
99
100 return false;
101}
102
103static inline bool vcpu_match_mmio_gpa(struct kvm_vcpu *vcpu, gpa_t gpa)
104{
105 if (vcpu->arch.mmio_gfn && vcpu->arch.mmio_gfn == gpa >> PAGE_SHIFT)
106 return true;
107
108 return false;
109}
110
111void kvm_before_handle_nmi(struct kvm_vcpu *vcpu);
112void kvm_after_handle_nmi(struct kvm_vcpu *vcpu);
113int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq, int inc_eip);
114
115void kvm_write_tsc(struct kvm_vcpu *vcpu, u64 data);
116
117int kvm_read_guest_virt(struct x86_emulate_ctxt *ctxt,
118 gva_t addr, void *val, unsigned int bytes,
119 struct x86_exception *exception);
120
121int kvm_write_guest_virt_system(struct x86_emulate_ctxt *ctxt,
122 gva_t addr, void *val, unsigned int bytes,
123 struct x86_exception *exception);
124
125extern u64 host_xcr0;
126
127#endif
128