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 static inline bool is_protmode(struct kvm_vcpu *vcpu) 37 { 38 return kvm_read_cr0_bits(vcpu, X86_CR0_PE); 39 } 40 41 static 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 50 static inline bool mmu_is_nested(struct kvm_vcpu *vcpu) 51 { 52 return vcpu->arch.walk_mmu == &vcpu->arch.nested_mmu; 53 } 54 55 static inline int is_pae(struct kvm_vcpu *vcpu) 56 { 57 return kvm_read_cr4_bits(vcpu, X86_CR4_PAE); 58 } 59 60 static inline int is_pse(struct kvm_vcpu *vcpu) 61 { 62 return kvm_read_cr4_bits(vcpu, X86_CR4_PSE); 63 } 64 65 static inline int is_paging(struct kvm_vcpu *vcpu) 66 { 67 return likely(kvm_read_cr0_bits(vcpu, X86_CR0_PG)); 68 } 69 70 static inline u32 bit(int bitno) 71 { 72 return 1 << (bitno & 31); 73 } 74 75 static 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 * Clear the mmio cache info for the given gva, 85 * specially, if gva is ~0ul, we clear all mmio cache info. 86 */ 87 static 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 95 static 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 } 102 103 static 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 } 110 111 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); 114 115 void kvm_write_tsc(struct kvm_vcpu *vcpu, struct msr_data *msr); 116 117 int kvm_read_guest_virt(struct x86_emulate_ctxt *ctxt, 118 gva_t addr, void *val, unsigned int bytes, 119 struct x86_exception *exception); 120 121 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); 124 125 extern u64 host_xcr0; 126 127 extern struct static_key kvm_no_apic_vcpu; 128 #endif 129