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".
20 #ifndef __VMM_SYM_SWAP_H__
21 #define __VMM_SYM_SWAP_H__
24 #ifdef CONFIG_SYMBIOTIC_SWAP
26 #include <palacios/vmm_types.h>
27 #include <palacios/vmm_paging.h>
28 #include <palacios/vmm_hashtable.h>
32 void * (*get_swap_entry)(uint32_t pg_index, void * private_data);
39 struct v3_swap_ops * ops;
45 struct v3_sym_swap_state {
46 struct v3_swap_dev devs[256];
48 #ifdef CONFIG_SYMBIOTIC_SWAP_TELEMETRY
50 uint32_t write_faults;
52 uint32_t mapped_pages;
57 struct hashtable * shdw_ptr_ht;
60 // Present = 0 and Dirty = 0
62 static inline int is_swapped_pte32(pte32_t * pte) {
63 return ((pte->present == 0) && (*(uint32_t *)pte != 0));
68 int v3_init_sym_swap(struct guest_info * info);
70 int v3_register_swap_disk(struct guest_info * info, int dev_index,
71 struct v3_swap_ops * ops, void * private_data);
73 int v3_swap_in_notify(struct guest_info * info, int pg_index, int dev_index);
76 int v3_get_vaddr_perms(struct guest_info * info, addr_t vaddr, pte32_t * guest_pte, pf_error_t * page_perms);
77 addr_t v3_get_swapped_pg_addr(struct guest_info * info, pte32_t * guest_pte);
78 addr_t v3_map_swp_page(struct guest_info * info, pte32_t * shadow_pte, pte32_t * guest_pte, void * swp_page_ptr);
80 int v3_swap_flush(struct guest_info * info);