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 129