f4b54458285b0d122e7bb9b0868042924bdf323f
[linux-2.6.git] / arch / x86 / kvm / x86.h
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
7 static inline void kvm_clear_exception_queue(struct kvm_vcpu *vcpu)
8 {
9         vcpu->arch.exception.pending = false;
10 }
11
12 static 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
20 static inline void kvm_clear_interrupt_queue(struct kvm_vcpu *vcpu)
21 {
22         vcpu->arch.interrupt.pending = false;
23 }
24
25 static 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
31 static inline bool kvm_exception_is_soft(unsigned int nr)
32 {
33         return (nr == BP_VECTOR) || (nr == OF_VECTOR);
34 }
35
36 struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu,
37                                              u32 function, u32 index);
38
39 static inline bool is_protmode(struct kvm_vcpu *vcpu)
40 {
41         return kvm_read_cr0_bits(vcpu, X86_CR0_PE);
42 }
43
44 static inline int is_long_mode(struct kvm_vcpu *vcpu)
45 {
46 #ifdef CONFIG_X86_64
47         return vcpu->arch.efer & EFER_LMA;
48 #else
49         return 0;
50 #endif
51 }
52
53 static inline int is_pae(struct kvm_vcpu *vcpu)
54 {
55         return kvm_read_cr4_bits(vcpu, X86_CR4_PAE);
56 }
57
58 static inline int is_pse(struct kvm_vcpu *vcpu)
59 {
60         return kvm_read_cr4_bits(vcpu, X86_CR4_PSE);
61 }
62
63 static inline int is_paging(struct kvm_vcpu *vcpu)
64 {
65         return kvm_read_cr0_bits(vcpu, X86_CR0_PG);
66 }
67
68 static inline struct kvm_mem_aliases *kvm_aliases(struct kvm *kvm)
69 {
70         return rcu_dereference_check(kvm->arch.aliases,
71                         srcu_read_lock_held(&kvm->srcu)
72                         || lockdep_is_held(&kvm->slots_lock));
73 }
74
75 void kvm_before_handle_nmi(struct kvm_vcpu *vcpu);
76 void kvm_after_handle_nmi(struct kvm_vcpu *vcpu);
77
78 #endif