2 * This file is part of the Palacios Virtual Machine Monitor developed
3 * by the V3VEE Project with funding from the United States National
4 * Science Foundation and the Department of Energy.
6 * The V3VEE Project is a joint project between Northwestern University
7 * and the University of New Mexico. You can find out more at
10 * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
11 * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
12 * All rights reserved.
14 * Author: Jack Lange <jarusl@cs.northwestern.edu>
16 * This is free software. You are permitted to use,
17 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
28 #include <palacios/vmm_types.h>
30 #include <palacios/vmm_paging.h>
31 #include <palacios/vmm_rbtree.h>
32 #include <palacios/vmm_list.h>
39 // These are the types of physical memory address regions
40 // from the perspective of the HOST
41 typedef enum shdw_region_type {
42 SHDW_REGION_WRITE_HOOK, // This region is mapped as read-only (page faults on write)
43 SHDW_REGION_FULL_HOOK, // This region is mapped as not present (always generate page faults)
44 SHDW_REGION_ALLOCATED, // Region is a section of host memory
46 } v3_shdw_region_type_t;
48 #define V3_MEM_CORE_ANY ((uint16_t)-1)
62 } __attribute__((packed));
63 } __attribute__((packed));
64 } __attribute__((packed)) v3_mem_flags_t;
68 struct v3_shadow_region {
72 v3_shdw_region_type_t host_type;
75 addr_t host_addr; // This either points to a host address mapping
77 // Called when data is read from a memory page
78 int (*read_hook)(struct guest_info * core, addr_t guest_addr, void * dst, uint_t length, void * priv_data);
79 // Called when data is written to a memory page
80 int (*write_hook)(struct guest_info * core, addr_t guest_addr, void * src, uint_t length, void * priv_data);
86 struct rb_node tree_node; // This for memory regions mapped to the global map
91 struct v3_shadow_region base_region;
93 struct rb_root shdw_regions;
95 void * hook_hvas; // this is an array of pages, equal to the number of cores
99 int v3_init_mem_map(struct v3_vm_info * vm);
100 void v3_delete_mem_map(struct v3_vm_info * vm);
105 int v3_add_shadow_mem(struct v3_vm_info * vm, uint16_t core_id,
106 addr_t guest_addr_start, addr_t guest_addr_end, addr_t host_addr);
108 int v3_hook_full_mem(struct v3_vm_info * vm, uint16_t core_id,
109 addr_t guest_addr_start, addr_t guest_addr_end,
110 int (*read)(struct guest_info * core, addr_t guest_addr, void * dst, uint_t length, void * priv_data),
111 int (*write)(struct guest_info * core, addr_t guest_addr, void * src, uint_t length, void * priv_data),
114 int v3_hook_write_mem(struct v3_vm_info * vm, uint16_t core_id,
115 addr_t guest_addr_start, addr_t guest_addr_end, addr_t host_addr,
116 int (*write)(struct guest_info * core, addr_t guest_addr, void * src, uint_t length, void * priv_data),
120 int v3_unhook_mem(struct v3_vm_info * vm, uint16_t core_id, addr_t guest_addr_start);
126 void v3_delete_shadow_region(struct v3_vm_info * vm, struct v3_shadow_region * reg);
131 struct v3_shadow_region * v3_get_shadow_region(struct v3_vm_info * vm, uint16_t core_id, addr_t guest_addr);
134 addr_t v3_get_shadow_addr(struct v3_shadow_region * reg, uint16_t core_id, addr_t guest_addr);
140 void v3_print_mem_map(struct v3_vm_info * vm);
144 int v3_handle_mem_hook(struct guest_info * info, addr_t guest_va, addr_t guest_pa,
145 struct v3_shadow_region * reg, pf_error_t access_info);
148 #endif // ! __V3VEE__