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_SHADOW_PAGING_H__
21 #define __VMM_SHADOW_PAGING_H__
26 #include <palacios/vmm_util.h>
27 #include <palacios/vmm_paging.h>
28 #include <palacios/vmm_hashtable.h>
31 struct shadow_page_state {
33 // virtualized control registers
37 // these two reflect the top-level page directory
38 // of the shadow page table
39 // v3_reg_t shadow_cr3;
42 // Hash table that ties a CR3 value to a hash table pointer for the PT entries
43 struct hashtable * cr3_cache;
44 // Hash table that contains a mapping of guest pte addresses to host pte addresses
45 struct hashtable * cached_ptes;
58 int v3_init_shadow_page_state(struct guest_info * info);
62 int v3_handle_shadow_pagefault(struct guest_info * info, addr_t fault_addr, pf_error_t error_code);
63 int v3_handle_shadow_invlpg(struct guest_info * info);
66 int v3_activate_shadow_pt(struct guest_info * info);
69 /* TODO: Change to static functions
70 * External visibility not needed
72 addr_t v3_create_new_shadow_pt();
73 int v3_cache_page_tables32(struct guest_info * info, addr_t pde);
74 int v3_replace_shdw_page32(struct guest_info * info, addr_t location, pte32_t * new_page, pte32_t * old_page);
78 int v3_replace_shdw_page(struct guest_info * info, addr_t location, void * new_page, void * old_page);