1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/* This file is dual-licensed; see usr/src/contrib/bhyve/LICENSE */
/*
* Copyright 2019 Joyent, Inc.
* Copyright 2021 Oxide Computer Company
*/
#ifndef _VMM_VM_H
#define _VMM_VM_H
#include <sys/types.h>
typedef struct vmspace vmspace_t;
typedef struct vm_client vm_client_t;
typedef struct vm_page vm_page_t;
typedef struct vm_object vm_object_t;
struct vmm_pte_ops;
typedef void (*vmc_inval_cb_t)(void *, uintptr_t, size_t);
/* vmspace_t operations */
vmspace_t *vmspace_alloc(size_t, struct vmm_pte_ops *, bool);
void vmspace_destroy(vmspace_t *);
int vmspace_map(vmspace_t *, vm_object_t *, uintptr_t, uintptr_t, size_t,
uint8_t);
int vmspace_unmap(vmspace_t *, uintptr_t, uintptr_t);
int vmspace_populate(vmspace_t *, uintptr_t, uintptr_t);
vm_client_t *vmspace_client_alloc(vmspace_t *);
uint64_t vmspace_table_root(vmspace_t *);
uint64_t vmspace_table_gen(vmspace_t *);
uint64_t vmspace_resident_count(vmspace_t *);
void vmspace_track_dirty(vmspace_t *, uint64_t, size_t, uint8_t *);
/* vm_client_t operations */
vm_page_t *vmc_hold(vm_client_t *, uintptr_t, int);
uint64_t vmc_table_enter(vm_client_t *);
void vmc_table_exit(vm_client_t *);
int vmc_fault(vm_client_t *, uintptr_t, int);
vm_client_t *vmc_clone(vm_client_t *);
int vmc_set_inval_cb(vm_client_t *, vmc_inval_cb_t, void *);
void vmc_destroy(vm_client_t *);
/* vm_object_t operations */
vm_object_t *vm_object_mem_allocate(size_t, bool);
vm_object_t *vmm_mmio_alloc(vmspace_t *, uintptr_t, size_t, uintptr_t);
void vm_object_reference(vm_object_t *);
void vm_object_release(vm_object_t *);
pfn_t vm_object_pfn(vm_object_t *, uintptr_t);
/* vm_page_t operations */
const void *vmp_get_readable(const vm_page_t *);
void *vmp_get_writable(const vm_page_t *);
pfn_t vmp_get_pfn(const vm_page_t *);
void vmp_chain(vm_page_t *, vm_page_t *);
vm_page_t *vmp_next(const vm_page_t *);
bool vmp_release(vm_page_t *);
bool vmp_release_chain(vm_page_t *);
/* seg_vmm mapping */
struct vm;
int vm_segmap_obj(struct vm *, int, off_t, off_t, struct as *, caddr_t *,
uint_t, uint_t, uint_t);
int vm_segmap_space(struct vm *, off_t, struct as *, caddr_t *, off_t, uint_t,
uint_t, uint_t);
/* Glue functions */
vm_paddr_t vtophys(void *);
void invalidate_cache_all(void);
/*
* The VM_MAXUSER_ADDRESS determines the upper size limit of a vmspace.
* This value is sized well below the host userlimit, halving the
* available space below the VA hole to avoid Intel EPT limits and
* leave room available in the usable VA range for other mmap tricks.
*/
#define VM_MAXUSER_ADDRESS 0x00003ffffffffffful
#endif /* _VMM_VM_H */
|
