Avoid beyond bounds copy while caching ACL
[zen-stable.git] / arch / x86 / kvm / x86.h
blobcb80c293cdd8ea1b26dbbaa050c1c5c43b1fd1ab
1 #ifndef ARCH_X86_KVM_X86_H
2 #define ARCH_X86_KVM_X86_H
4 #include <linux/kvm_host.h>
5 #include "kvm_cache_regs.h"
7 static inline void kvm_clear_exception_queue(struct kvm_vcpu *vcpu)
9 vcpu->arch.exception.pending = false;
12 static inline void kvm_queue_interrupt(struct kvm_vcpu *vcpu, u8 vector,
13 bool soft)
15 vcpu->arch.interrupt.pending = true;
16 vcpu->arch.interrupt.soft = soft;
17 vcpu->arch.interrupt.nr = vector;
20 static inline void kvm_clear_interrupt_queue(struct kvm_vcpu *vcpu)
22 vcpu->arch.interrupt.pending = false;
25 static inline bool kvm_event_needs_reinjection(struct kvm_vcpu *vcpu)
27 return vcpu->arch.exception.pending || vcpu->arch.interrupt.pending ||
28 vcpu->arch.nmi_injected;
31 static inline bool kvm_exception_is_soft(unsigned int nr)
33 return (nr == BP_VECTOR) || (nr == OF_VECTOR);
36 static inline bool is_protmode(struct kvm_vcpu *vcpu)
38 return kvm_read_cr0_bits(vcpu, X86_CR0_PE);
41 static inline int is_long_mode(struct kvm_vcpu *vcpu)
43 #ifdef CONFIG_X86_64
44 return vcpu->arch.efer & EFER_LMA;
45 #else
46 return 0;
47 #endif
50 static inline bool mmu_is_nested(struct kvm_vcpu *vcpu)
52 return vcpu->arch.walk_mmu == &vcpu->arch.nested_mmu;
55 static inline int is_pae(struct kvm_vcpu *vcpu)
57 return kvm_read_cr4_bits(vcpu, X86_CR4_PAE);
60 static inline int is_pse(struct kvm_vcpu *vcpu)
62 return kvm_read_cr4_bits(vcpu, X86_CR4_PSE);
65 static inline int is_paging(struct kvm_vcpu *vcpu)
67 return kvm_read_cr0_bits(vcpu, X86_CR0_PG);
70 static inline u32 bit(int bitno)
72 return 1 << (bitno & 31);
75 static inline void vcpu_cache_mmio_info(struct kvm_vcpu *vcpu,
76 gva_t gva, gfn_t gfn, unsigned access)
78 vcpu->arch.mmio_gva = gva & PAGE_MASK;
79 vcpu->arch.access = access;
80 vcpu->arch.mmio_gfn = gfn;
84 * Clear the mmio cache info for the given gva,
85 * specially, if gva is ~0ul, we clear all mmio cache info.
87 static inline void vcpu_clear_mmio_info(struct kvm_vcpu *vcpu, gva_t gva)
89 if (gva != (~0ul) && vcpu->arch.mmio_gva != (gva & PAGE_MASK))
90 return;
92 vcpu->arch.mmio_gva = 0;
95 static inline bool vcpu_match_mmio_gva(struct kvm_vcpu *vcpu, unsigned long gva)
97 if (vcpu->arch.mmio_gva && vcpu->arch.mmio_gva == (gva & PAGE_MASK))
98 return true;
100 return false;
103 static inline bool vcpu_match_mmio_gpa(struct kvm_vcpu *vcpu, gpa_t gpa)
105 if (vcpu->arch.mmio_gfn && vcpu->arch.mmio_gfn == gpa >> PAGE_SHIFT)
106 return true;
108 return false;
111 void kvm_before_handle_nmi(struct kvm_vcpu *vcpu);
112 void kvm_after_handle_nmi(struct kvm_vcpu *vcpu);
113 int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq, int inc_eip);
115 void kvm_write_tsc(struct kvm_vcpu *vcpu, u64 data);
117 int kvm_read_guest_virt(struct x86_emulate_ctxt *ctxt,
118 gva_t addr, void *val, unsigned int bytes,
119 struct x86_exception *exception);
121 int kvm_write_guest_virt_system(struct x86_emulate_ctxt *ctxt,
122 gva_t addr, void *val, unsigned int bytes,
123 struct x86_exception *exception);
125 extern u64 host_xcr0;
127 #endif