kvm_types.h source code [linux/include/linux/kvm_types.h]

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_gfn_range;
10	struct kvm_interrupt;
11	struct kvm_irq_routing_table;
12	struct kvm_memory_slot;
13	struct kvm_one_reg;
14	struct kvm_run;
15	struct kvm_userspace_memory_region;
16	struct kvm_vcpu;
17	struct kvm_vcpu_init;
18	struct kvm_memslots;
19
20	enum kvm_mr_change;
21
22	#include <linux/bits.h>
23	#include <linux/mutex.h>
24	#include <linux/types.h>
25	#include <linux/spinlock_types.h>
26
27	#include <asm/kvm_types.h>
28
29	/*
30	* Address types:
31	*
32	* gva - guest virtual address
33	* gpa - guest physical address
34	* gfn - guest frame number
35	* hva - host virtual address
36	* hpa - host physical address
37	* hfn - host frame number
38	*/
39
40	typedef unsigned long gva_t;
41	typedef u64 gpa_t;
42	typedef u64 gfn_t;
43
44	#define INVALID_GPA (~(gpa_t)0)
45
46	typedef unsigned long hva_t;
47	typedef u64 hpa_t;
48	typedef u64 hfn_t;
49
50	typedef hfn_t kvm_pfn_t;
51
52	struct gfn_to_hva_cache {
53	u64 generation;
54	gpa_t gpa;
55	unsigned long hva;
56	unsigned long len;
57	struct kvm_memory_slot *memslot;
58	};
59
60	struct gfn_to_pfn_cache {
61	u64 generation;
62	gpa_t gpa;
63	unsigned long uhva;
64	struct kvm_memory_slot *memslot;
65	struct kvm *kvm;
66	struct list_head list;
67	rwlock_t lock;
68	struct mutex refresh_lock;
69	void *khva;
70	kvm_pfn_t pfn;
71	bool active;
72	bool valid;
73	};
74
75	#ifdef KVM_ARCH_NR_OBJS_PER_MEMORY_CACHE
76	/*
77	* Memory caches are used to preallocate memory ahead of various MMU flows,
78	* e.g. page fault handlers. Gracefully handling allocation failures deep in
79	* MMU flows is problematic, as is triggering reclaim, I/O, etc... while
80	* holding MMU locks. Note, these caches act more like prefetch buffers than
81	* classical caches, i.e. objects are not returned to the cache on being freed.
82	*
83	* The @capacity field and @objects array are lazily initialized when the cache
84	* is topped up (__kvm_mmu_topup_memory_cache()).
85	*/
86	struct kvm_mmu_memory_cache {
87	gfp_t gfp_zero;
88	gfp_t gfp_custom;
89	u64 init_value;
90	struct kmem_cache *kmem_cache;
91	int capacity;
92	int nobjs;
93	void **objects;
94	};
95	#endif
96
97	#define HALT_POLL_HIST_COUNT 32
98
99	struct kvm_vm_stat_generic {
100	u64 remote_tlb_flush;
101	u64 remote_tlb_flush_requests;
102	};
103
104	struct kvm_vcpu_stat_generic {
105	u64 halt_successful_poll;
106	u64 halt_attempted_poll;
107	u64 halt_poll_invalid;
108	u64 halt_wakeup;
109	u64 halt_poll_success_ns;
110	u64 halt_poll_fail_ns;
111	u64 halt_wait_ns;
112	u64 halt_poll_success_hist[HALT_POLL_HIST_COUNT];
113	u64 halt_poll_fail_hist[HALT_POLL_HIST_COUNT];
114	u64 halt_wait_hist[HALT_POLL_HIST_COUNT];
115	u64 blocking;
116	};
117
118	#define KVM_STATS_NAME_SIZE 48
119
120	#endif /* __KVM_TYPES_H__ */
121

source code of linux/include/linux/kvm_types.h