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 is_64_bit_mode(struct kvm_vcpu *vcpu) 51 { 52 int cs_db, cs_l; 53 54 if (!is_long_mode(vcpu)) 55 return false; 56 kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l); 57 return cs_l; 58 } 59 60 static inline bool mmu_is_nested(struct kvm_vcpu *vcpu) 61 { 62 return vcpu->arch.walk_mmu == &vcpu->arch.nested_mmu; 63 } 64 65 static inline int is_pae(struct kvm_vcpu *vcpu) 66 { 67 return kvm_read_cr4_bits(vcpu, X86_CR4_PAE); 68 } 69 70 static inline int is_pse(struct kvm_vcpu *vcpu) 71 { 72 return kvm_read_cr4_bits(vcpu, X86_CR4_PSE); 73 } 74 75 static inline int is_paging(struct kvm_vcpu *vcpu) 76 { 77 return likely(kvm_read_cr0_bits(vcpu, X86_CR0_PG)); 78 } 79 80 static inline u32 bit(int bitno) 81 { 82 return 1 << (bitno & 31); 83 } 84 85 static inline void vcpu_cache_mmio_info(struct kvm_vcpu *vcpu, 86 gva_t gva, gfn_t gfn, unsigned access) 87 { 88 vcpu->arch.mmio_gva = gva & PAGE_MASK; 89 vcpu->arch.access = access; 90 vcpu->arch.mmio_gfn = gfn; 91 vcpu->arch.mmio_gen = kvm_memslots(vcpu->kvm)->generation; 92 } 93 94 static inline bool vcpu_match_mmio_gen(struct kvm_vcpu *vcpu) 95 { 96 return vcpu->arch.mmio_gen == kvm_memslots(vcpu->kvm)->generation; 97 } 98 99 /* 100 * Clear the mmio cache info for the given gva. If gva is MMIO_GVA_ANY, we 101 * clear all mmio cache info. 102 */ 103 #define MMIO_GVA_ANY (~(gva_t)0) 104 105 static inline void vcpu_clear_mmio_info(struct kvm_vcpu *vcpu, gva_t gva) 106 { 107 if (gva != MMIO_GVA_ANY && vcpu->arch.mmio_gva != (gva & PAGE_MASK)) 108 return; 109 110 vcpu->arch.mmio_gva = 0; 111 } 112 113 static inline bool vcpu_match_mmio_gva(struct kvm_vcpu *vcpu, unsigned long gva) 114 { 115 if (vcpu_match_mmio_gen(vcpu) && vcpu->arch.mmio_gva && 116 vcpu->arch.mmio_gva == (gva & PAGE_MASK)) 117 return true; 118 119 return false; 120 } 121 122 static inline bool vcpu_match_mmio_gpa(struct kvm_vcpu *vcpu, gpa_t gpa) 123 { 124 if (vcpu_match_mmio_gen(vcpu) && vcpu->arch.mmio_gfn && 125 vcpu->arch.mmio_gfn == gpa >> PAGE_SHIFT) 126 return true; 127 128 return false; 129 } 130 131 static inline unsigned long kvm_register_readl(struct kvm_vcpu *vcpu, 132 enum kvm_reg reg) 133 { 134 unsigned long val = kvm_register_read(vcpu, reg); 135 136 return is_64_bit_mode(vcpu) ? val : (u32)val; 137 } 138 139 static inline void kvm_register_writel(struct kvm_vcpu *vcpu, 140 enum kvm_reg reg, 141 unsigned long val) 142 { 143 if (!is_64_bit_mode(vcpu)) 144 val = (u32)val; 145 return kvm_register_write(vcpu, reg, val); 146 } 147 148 void kvm_before_handle_nmi(struct kvm_vcpu *vcpu); 149 void kvm_after_handle_nmi(struct kvm_vcpu *vcpu); 150 int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq, int inc_eip); 151 152 void kvm_write_tsc(struct kvm_vcpu *vcpu, struct msr_data *msr); 153 154 int kvm_read_guest_virt(struct x86_emulate_ctxt *ctxt, 155 gva_t addr, void *val, unsigned int bytes, 156 struct x86_exception *exception); 157 158 int kvm_write_guest_virt_system(struct x86_emulate_ctxt *ctxt, 159 gva_t addr, void *val, unsigned int bytes, 160 struct x86_exception *exception); 161 162 bool kvm_mtrr_valid(struct kvm_vcpu *vcpu, u32 msr, u64 data); 163 164 #define KVM_SUPPORTED_XCR0 (XSTATE_FP | XSTATE_SSE | XSTATE_YMM \ 165 | XSTATE_BNDREGS | XSTATE_BNDCSR) 166 extern u64 host_xcr0; 167 168 extern u64 kvm_supported_xcr0(void); 169 170 extern unsigned int min_timer_period_us; 171 172 extern struct static_key kvm_no_apic_vcpu; 173 #endif 174