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 bool mmu_is_nested(struct kvm_vcpu *vcpu)
  54 {
  55         return vcpu->arch.walk_mmu == &vcpu->arch.nested_mmu;
  56 }
  57
  58 static inline int is_pae(struct kvm_vcpu *vcpu)
  59 {
  60         return kvm_read_cr4_bits(vcpu, X86_CR4_PAE);
  61 }
  62
  63 static inline int is_pse(struct kvm_vcpu *vcpu)
  64 {
  65         return kvm_read_cr4_bits(vcpu, X86_CR4_PSE);
  66 }
  67
  68 static inline int is_paging(struct kvm_vcpu *vcpu)
  69 {
  70         return kvm_read_cr0_bits(vcpu, X86_CR0_PG);
  71 }
  72
  73 static inline u32 bit(int bitno)
  74 {
  75         return 1 << (bitno & 31);
  76 }
  77
  78 static inline void vcpu_cache_mmio_info(struct kvm_vcpu *vcpu,
  79                                         gva_t gva, gfn_t gfn, unsigned access)
  80 {
  81         vcpu->arch.mmio_gva = gva & PAGE_MASK;
  82         vcpu->arch.access = access;
  83         vcpu->arch.mmio_gfn = gfn;
  84 }
  85
  86 /*
  87  * Clear the mmio cache info for the given gva,
  88  * specially, if gva is ~0ul, we clear all mmio cache info.
  89  */
  90 static inline void vcpu_clear_mmio_info(struct kvm_vcpu *vcpu, gva_t gva)
  91 {
  92         if (gva != (~0ul) && vcpu->arch.mmio_gva != (gva & PAGE_MASK))
  93                 return;
  94
  95         vcpu->arch.mmio_gva = 0;
  96 }
  97
  98 static inline bool vcpu_match_mmio_gva(struct kvm_vcpu *vcpu, unsigned long gva)
  99 {
 100         if (vcpu->arch.mmio_gva && vcpu->arch.mmio_gva == (gva & PAGE_MASK))
 101                 return true;
 102
 103         return false;
 104 }
 105
 106 static inline bool vcpu_match_mmio_gpa(struct kvm_vcpu *vcpu, gpa_t gpa)
 107 {
 108         if (vcpu->arch.mmio_gfn && vcpu->arch.mmio_gfn == gpa >> PAGE_SHIFT)
 109                 return true;
 110
 111         return false;
 112 }
 113
 114 void kvm_before_handle_nmi(struct kvm_vcpu *vcpu);
 115 void kvm_after_handle_nmi(struct kvm_vcpu *vcpu);
 116 int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq, int inc_eip);
 117
 118 void kvm_write_tsc(struct kvm_vcpu *vcpu, u64 data);
 119
 120 int kvm_read_guest_virt(struct x86_emulate_ctxt *ctxt,
 121         gva_t addr, void *val, unsigned int bytes,
 122         struct x86_exception *exception);
 123
 124 int kvm_write_guest_virt_system(struct x86_emulate_ctxt *ctxt,
 125         gva_t addr, void *val, unsigned int bytes,
 126         struct x86_exception *exception);
 127
 128 #endif