1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 3 #ifndef __KVM_TYPES_H__ 4 #define __KVM_TYPES_H__ 5 6 struct kvm; 7 struct kvm_async_pf; 8 struct kvm_device_ops; 9 struct kvm_interrupt; 10 struct kvm_irq_routing_table; 11 struct kvm_memory_slot; 12 struct kvm_one_reg; 13 struct kvm_run; 14 struct kvm_userspace_memory_region; 15 struct kvm_vcpu; 16 struct kvm_vcpu_init; 17 struct kvm_memslots; 18 19 enum kvm_mr_change; 20 21 #include <linux/types.h> 22 #include <linux/spinlock_types.h> 23 24 #include <asm/kvm_types.h> 25 26 /* 27 * Address types: 28 * 29 * gva - guest virtual address 30 * gpa - guest physical address 31 * gfn - guest frame number 32 * hva - host virtual address 33 * hpa - host physical address 34 * hfn - host frame number 35 */ 36 37 typedef unsigned long gva_t; 38 typedef u64 gpa_t; 39 typedef u64 gfn_t; 40 41 #define GPA_INVALID (~(gpa_t)0) 42 43 typedef unsigned long hva_t; 44 typedef u64 hpa_t; 45 typedef u64 hfn_t; 46 47 typedef hfn_t kvm_pfn_t; 48 49 struct gfn_to_hva_cache { 50 u64 generation; 51 gpa_t gpa; 52 unsigned long hva; 53 unsigned long len; 54 struct kvm_memory_slot *memslot; 55 }; 56 57 struct gfn_to_pfn_cache { 58 u64 generation; 59 gpa_t gpa; 60 unsigned long uhva; 61 struct kvm_memory_slot *memslot; 62 struct kvm_vcpu *vcpu; 63 struct list_head list; 64 rwlock_t lock; 65 void *khva; 66 kvm_pfn_t pfn; 67 bool active; 68 bool valid; 69 bool dirty; 70 bool kernel_map; 71 bool guest_uses_pa; 72 }; 73 74 #ifdef KVM_ARCH_NR_OBJS_PER_MEMORY_CACHE 75 /* 76 * Memory caches are used to preallocate memory ahead of various MMU flows, 77 * e.g. page fault handlers. Gracefully handling allocation failures deep in 78 * MMU flows is problematic, as is triggering reclaim, I/O, etc... while 79 * holding MMU locks. Note, these caches act more like prefetch buffers than 80 * classical caches, i.e. objects are not returned to the cache on being freed. 81 */ 82 struct kvm_mmu_memory_cache { 83 int nobjs; 84 gfp_t gfp_zero; 85 struct kmem_cache *kmem_cache; 86 void *objects[KVM_ARCH_NR_OBJS_PER_MEMORY_CACHE]; 87 }; 88 #endif 89 90 #define HALT_POLL_HIST_COUNT 32 91 92 struct kvm_vm_stat_generic { 93 u64 remote_tlb_flush; 94 u64 remote_tlb_flush_requests; 95 }; 96 97 struct kvm_vcpu_stat_generic { 98 u64 halt_successful_poll; 99 u64 halt_attempted_poll; 100 u64 halt_poll_invalid; 101 u64 halt_wakeup; 102 u64 halt_poll_success_ns; 103 u64 halt_poll_fail_ns; 104 u64 halt_wait_ns; 105 u64 halt_poll_success_hist[HALT_POLL_HIST_COUNT]; 106 u64 halt_poll_fail_hist[HALT_POLL_HIST_COUNT]; 107 u64 halt_wait_hist[HALT_POLL_HIST_COUNT]; 108 u64 blocking; 109 }; 110 111 #define KVM_STATS_NAME_SIZE 48 112 113 #endif /* __KVM_TYPES_H__ */ 114