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>
38 // These are the types of physical memory address regions
39 // from the perspective of the HOST
40 typedef enum shdw_region_type {
41 SHDW_REGION_INVALID, // This region is INVALID (this is a return type to denote errors)
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
45 } v3_shdw_region_type_t;
48 typedef struct v3_shdw_map {
51 struct rb_root shdw_regions;
55 struct v3_shadow_region {
59 v3_shdw_region_type_t host_type;
61 addr_t host_addr; // This either points to a host address mapping
64 // Called when data is read from a memory page
65 int (*read_hook)(addr_t guest_addr, void * dst, uint_t length, void * priv_data);
66 // Called when data is written to a memory page
67 int (*write_hook)(addr_t guest_addr, void * src, uint_t length, void * priv_data);
71 struct rb_node tree_node;
76 void v3_init_shadow_map(struct guest_info * info);
77 void v3_delete_shadow_map(struct guest_info * info);
80 int v3_add_shadow_mem(struct guest_info * guest_info,
81 addr_t guest_addr_start,
82 addr_t guest_addr_end,
85 int v3_hook_full_mem(struct guest_info * info, addr_t guest_addr_start, addr_t guest_addr_end,
86 int (*read)(addr_t guest_addr, void * dst, uint_t length, void * priv_data),
87 int (*write)(addr_t guest_addr, void * src, uint_t length, void * priv_data),
90 int v3_hook_write_mem(struct guest_info * info, addr_t guest_addr_start, addr_t guest_addr_end,
92 int (*write)(addr_t guest_addr, void * src, uint_t length, void * priv_data),
100 void v3_delete_shadow_region(struct guest_info * info, struct v3_shadow_region * reg);
103 struct v3_shadow_region * v3_get_shadow_region(struct guest_info * info, addr_t guest_addr);
104 addr_t v3_get_shadow_addr(struct v3_shadow_region * reg, addr_t guest_addr);
110 void print_shadow_map(struct guest_info * info);
116 const uchar_t * v3_shdw_region_type_to_str(v3_shdw_region_type_t type);
120 int handle_special_page_fault(struct guest_info * info, addr_t fault_addr, addr_t gp_addr, pf_error_t access_info);
122 int v3_handle_mem_wr_hook(struct guest_info * info, addr_t guest_va, addr_t guest_pa,
123 struct v3_shadow_region * reg, pf_error_t access_info);
124 int v3_handle_mem_full_hook(struct guest_info * info, addr_t guest_va, addr_t guest_pa,
125 struct v3_shadow_region * reg, pf_error_t access_info);
127 #endif // ! __V3VEE__