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,
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)
44 return vcpu->arch.efer & EFER_LMA;
50 static inline bool is_64_bit_mode(struct kvm_vcpu *vcpu)
54 if (!is_long_mode(vcpu))
56 kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);
60 static inline bool mmu_is_nested(struct kvm_vcpu *vcpu)
62 return vcpu->arch.walk_mmu == &vcpu->arch.nested_mmu;
65 static inline int is_pae(struct kvm_vcpu *vcpu)
67 return kvm_read_cr4_bits(vcpu, X86_CR4_PAE);
70 static inline int is_pse(struct kvm_vcpu *vcpu)
72 return kvm_read_cr4_bits(vcpu, X86_CR4_PSE);
75 static inline int is_paging(struct kvm_vcpu *vcpu)
77 return likely(kvm_read_cr0_bits(vcpu, X86_CR0_PG));
80 static inline u32 bit(int bitno)
82 return 1 << (bitno & 31);
85 static inline void vcpu_cache_mmio_info(struct kvm_vcpu *vcpu,
86 gva_t gva, gfn_t gfn, unsigned access)
88 vcpu->arch.mmio_gva = gva & PAGE_MASK;
89 vcpu->arch.access = access;
90 vcpu->arch.mmio_gfn = gfn;
94 * Clear the mmio cache info for the given gva,
95 * specially, if gva is ~0ul, we clear all mmio cache info.
97 static inline void vcpu_clear_mmio_info(struct kvm_vcpu *vcpu, gva_t gva)
99 if (gva != (~0ul) && vcpu->arch.mmio_gva != (gva & PAGE_MASK))
102 vcpu->arch.mmio_gva = 0;
105 static inline bool vcpu_match_mmio_gva(struct kvm_vcpu *vcpu, unsigned long gva)
107 if (vcpu->arch.mmio_gva && vcpu->arch.mmio_gva == (gva & PAGE_MASK))
113 static inline bool vcpu_match_mmio_gpa(struct kvm_vcpu *vcpu, gpa_t gpa)
115 if (vcpu->arch.mmio_gfn && vcpu->arch.mmio_gfn == gpa >> PAGE_SHIFT)
121 static inline unsigned long kvm_register_readl(struct kvm_vcpu *vcpu,
124 unsigned long val = kvm_register_read(vcpu, reg);
126 return is_64_bit_mode(vcpu) ? val : (u32)val;
129 static inline void kvm_register_writel(struct kvm_vcpu *vcpu,
133 if (!is_64_bit_mode(vcpu))
135 return kvm_register_write(vcpu, reg, val);
138 void kvm_before_handle_nmi(struct kvm_vcpu *vcpu);
139 void kvm_after_handle_nmi(struct kvm_vcpu *vcpu);
140 int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq, int inc_eip);
142 void kvm_write_tsc(struct kvm_vcpu *vcpu, struct msr_data *msr);
144 int kvm_read_guest_virt(struct x86_emulate_ctxt *ctxt,
145 gva_t addr, void *val, unsigned int bytes,
146 struct x86_exception *exception);
148 int kvm_write_guest_virt_system(struct x86_emulate_ctxt *ctxt,
149 gva_t addr, void *val, unsigned int bytes,
150 struct x86_exception *exception);
152 #define KVM_SUPPORTED_XCR0 (XSTATE_FP | XSTATE_SSE | XSTATE_YMM \
153 | XSTATE_BNDREGS | XSTATE_BNDCSR)
154 extern u64 host_xcr0;
156 extern u64 kvm_supported_xcr0(void);
158 extern unsigned int min_timer_period_us;
160 extern struct static_key kvm_no_apic_vcpu;