Palacios Public Git Repository

To checkout Palacios execute

  git clone http://v3vee.org/palacios/palacios.web/palacios.git
This will give you the master branch. You probably want the devel branch or one of the release branches. To switch to the devel branch, simply execute
  cd palacios
  git checkout --track -b devel origin/devel
The other branches are similar.


a8646ef86f0072e905600c5afe3a0c10c6635ff4
[palacios.git] / palacios / include / palacios / vmm_sym_swap.h
1 /* 
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.  
5  *
6  * The V3VEE Project is a joint project between Northwestern University
7  * and the University of New Mexico.  You can find out more at 
8  * http://www.v3vee.org
9  *
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.
13  *
14  * Author: Jack Lange <jarusl@cs.northwestern.edu>
15  *
16  * This is free software.  You are permitted to use,
17  * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
18  */
19
20 #ifndef __VMM_SYM_SWAP_H__
21 #define __VMM_SYM_SWAP_H__
22
23 #ifdef __V3VEE__ 
24 #ifdef CONFIG_SYMBIOTIC_SWAP
25
26 #include <palacios/vmm_types.h>
27 #include <palacios/vmm_paging.h>
28 #include <palacios/vmm_hashtable.h>
29
30
31 struct v3_swap_ops {
32     void * (*get_swap_entry)(uint32_t pg_index, void * private_data);
33 };
34
35
36 struct v3_swap_dev {
37     uint8_t present;
38
39     struct v3_swap_ops * ops;
40
41     void * private_data;
42 };
43
44
45 struct v3_sym_swap_state {
46     struct v3_swap_dev devs[256];
47
48 #ifdef CONFIG_SYMBIOTIC_SWAP_TELEMETRY
49     uint32_t read_faults;
50     uint32_t write_faults;
51     uint32_t flushes;
52     uint32_t mapped_pages;
53 #endif
54
55     // shadow pointers
56     struct hashtable * shdw_ptr_ht;
57 };
58
59 // Present = 0 and Dirty = 0
60 // fixme
61 static inline int is_swapped_pte32(pte32_t * pte) {
62     return ((pte->present == 0) && (*(uint32_t *)pte != 0));
63 }
64
65
66
67 int v3_init_sym_swap(struct guest_info * info);
68
69 int v3_register_swap_disk(struct guest_info * info, int dev_index, 
70                           struct v3_swap_ops * ops, void * private_data);
71
72 int v3_swap_in_notify(struct guest_info * info, int pg_index, int dev_index);
73
74
75 int v3_get_vaddr_perms(struct guest_info * info, addr_t vaddr, pte32_t * guest_pte, pf_error_t * page_perms);
76 addr_t v3_get_swapped_pg_addr(struct guest_info * info, pte32_t * shadow_pte, pte32_t * guest_pte);
77
78 int v3_swap_flush(struct guest_info * info);
79
80
81 #endif
82 #endif
83 #endif