x86/mm/pat: Don't report PAT on CPUs that don't support it
[linux/fpc-iii.git] / arch / x86 / kvm / x86.h
blobe8ff3e4ce38a53e167bc475f0d2b91b5fd9065b3
1 #ifndef ARCH_X86_KVM_X86_H
2 #define ARCH_X86_KVM_X86_H
4 #include <linux/kvm_host.h>
5 #include <asm/pvclock.h>
6 #include "kvm_cache_regs.h"
8 #define MSR_IA32_CR_PAT_DEFAULT 0x0007040600070406ULL
10 static inline void kvm_clear_exception_queue(struct kvm_vcpu *vcpu)
12 vcpu->arch.exception.pending = false;
15 static inline void kvm_queue_interrupt(struct kvm_vcpu *vcpu, u8 vector,
16 bool soft)
18 vcpu->arch.interrupt.pending = true;
19 vcpu->arch.interrupt.soft = soft;
20 vcpu->arch.interrupt.nr = vector;
23 static inline void kvm_clear_interrupt_queue(struct kvm_vcpu *vcpu)
25 vcpu->arch.interrupt.pending = false;
28 static inline bool kvm_event_needs_reinjection(struct kvm_vcpu *vcpu)
30 return vcpu->arch.exception.pending || vcpu->arch.interrupt.pending ||
31 vcpu->arch.nmi_injected;
34 static inline bool kvm_exception_is_soft(unsigned int nr)
36 return (nr == BP_VECTOR) || (nr == OF_VECTOR);
39 static inline bool is_protmode(struct kvm_vcpu *vcpu)
41 return kvm_read_cr0_bits(vcpu, X86_CR0_PE);
44 static inline int is_long_mode(struct kvm_vcpu *vcpu)
46 #ifdef CONFIG_X86_64
47 return vcpu->arch.efer & EFER_LMA;
48 #else
49 return 0;
50 #endif
53 static inline bool is_64_bit_mode(struct kvm_vcpu *vcpu)
55 int cs_db, cs_l;
57 if (!is_long_mode(vcpu))
58 return false;
59 kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);
60 return cs_l;
63 static inline bool mmu_is_nested(struct kvm_vcpu *vcpu)
65 return vcpu->arch.walk_mmu == &vcpu->arch.nested_mmu;
68 static inline int is_pae(struct kvm_vcpu *vcpu)
70 return kvm_read_cr4_bits(vcpu, X86_CR4_PAE);
73 static inline int is_pse(struct kvm_vcpu *vcpu)
75 return kvm_read_cr4_bits(vcpu, X86_CR4_PSE);
78 static inline int is_paging(struct kvm_vcpu *vcpu)
80 return likely(kvm_read_cr0_bits(vcpu, X86_CR0_PG));
83 static inline u32 bit(int bitno)
85 return 1 << (bitno & 31);
88 static inline void vcpu_cache_mmio_info(struct kvm_vcpu *vcpu,
89 gva_t gva, gfn_t gfn, unsigned access)
91 vcpu->arch.mmio_gva = gva & PAGE_MASK;
92 vcpu->arch.access = access;
93 vcpu->arch.mmio_gfn = gfn;
94 vcpu->arch.mmio_gen = kvm_memslots(vcpu->kvm)->generation;
97 static inline bool vcpu_match_mmio_gen(struct kvm_vcpu *vcpu)
99 return vcpu->arch.mmio_gen == kvm_memslots(vcpu->kvm)->generation;
103 * Clear the mmio cache info for the given gva. If gva is MMIO_GVA_ANY, we
104 * clear all mmio cache info.
106 #define MMIO_GVA_ANY (~(gva_t)0)
108 static inline void vcpu_clear_mmio_info(struct kvm_vcpu *vcpu, gva_t gva)
110 if (gva != MMIO_GVA_ANY && vcpu->arch.mmio_gva != (gva & PAGE_MASK))
111 return;
113 vcpu->arch.mmio_gva = 0;
116 static inline bool vcpu_match_mmio_gva(struct kvm_vcpu *vcpu, unsigned long gva)
118 if (vcpu_match_mmio_gen(vcpu) && vcpu->arch.mmio_gva &&
119 vcpu->arch.mmio_gva == (gva & PAGE_MASK))
120 return true;
122 return false;
125 static inline bool vcpu_match_mmio_gpa(struct kvm_vcpu *vcpu, gpa_t gpa)
127 if (vcpu_match_mmio_gen(vcpu) && vcpu->arch.mmio_gfn &&
128 vcpu->arch.mmio_gfn == gpa >> PAGE_SHIFT)
129 return true;
131 return false;
134 static inline unsigned long kvm_register_readl(struct kvm_vcpu *vcpu,
135 enum kvm_reg reg)
137 unsigned long val = kvm_register_read(vcpu, reg);
139 return is_64_bit_mode(vcpu) ? val : (u32)val;
142 static inline void kvm_register_writel(struct kvm_vcpu *vcpu,
143 enum kvm_reg reg,
144 unsigned long val)
146 if (!is_64_bit_mode(vcpu))
147 val = (u32)val;
148 return kvm_register_write(vcpu, reg, val);
151 static inline bool kvm_check_has_quirk(struct kvm *kvm, u64 quirk)
153 return !(kvm->arch.disabled_quirks & quirk);
156 void kvm_before_handle_nmi(struct kvm_vcpu *vcpu);
157 void kvm_after_handle_nmi(struct kvm_vcpu *vcpu);
158 void kvm_set_pending_timer(struct kvm_vcpu *vcpu);
159 int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq, int inc_eip);
161 void kvm_write_tsc(struct kvm_vcpu *vcpu, struct msr_data *msr);
162 u64 get_kvmclock_ns(struct kvm *kvm);
164 int kvm_read_guest_virt(struct x86_emulate_ctxt *ctxt,
165 gva_t addr, void *val, unsigned int bytes,
166 struct x86_exception *exception);
168 int kvm_write_guest_virt_system(struct x86_emulate_ctxt *ctxt,
169 gva_t addr, void *val, unsigned int bytes,
170 struct x86_exception *exception);
172 void kvm_vcpu_mtrr_init(struct kvm_vcpu *vcpu);
173 u8 kvm_mtrr_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
174 bool kvm_mtrr_valid(struct kvm_vcpu *vcpu, u32 msr, u64 data);
175 int kvm_mtrr_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data);
176 int kvm_mtrr_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
177 bool kvm_mtrr_check_gfn_range_consistency(struct kvm_vcpu *vcpu, gfn_t gfn,
178 int page_num);
179 bool kvm_vector_hashing_enabled(void);
181 #define KVM_SUPPORTED_XCR0 (XFEATURE_MASK_FP | XFEATURE_MASK_SSE \
182 | XFEATURE_MASK_YMM | XFEATURE_MASK_BNDREGS \
183 | XFEATURE_MASK_BNDCSR | XFEATURE_MASK_AVX512 \
184 | XFEATURE_MASK_PKRU)
185 extern u64 host_xcr0;
187 extern u64 kvm_supported_xcr0(void);
189 extern unsigned int min_timer_period_us;
191 extern unsigned int lapic_timer_advance_ns;
193 extern struct static_key kvm_no_apic_vcpu;
195 static inline u64 nsec_to_cycles(struct kvm_vcpu *vcpu, u64 nsec)
197 return pvclock_scale_delta(nsec, vcpu->arch.virtual_tsc_mult,
198 vcpu->arch.virtual_tsc_shift);
201 /* Same "calling convention" as do_div:
202 * - divide (n << 32) by base
203 * - put result in n
204 * - return remainder
206 #define do_shl32_div32(n, base) \
207 ({ \
208 u32 __quot, __rem; \
209 asm("divl %2" : "=a" (__quot), "=d" (__rem) \
210 : "rm" (base), "0" (0), "1" ((u32) n)); \
211 n = __quot; \
212 __rem; \
215 #endif