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>
30 struct shadow_page_state {
32 // these two reflect the top-level page directory
33 // of the guest page table
34 paging_mode_t guest_mode;
35 ullong_t guest_cr3; // points to guest's current page table
37 // Should this be here??
40 // these two reflect the top-level page directory
41 // of the shadow page table
42 paging_mode_t shadow_mode;
46 // Hash table that ties a CR3 value to a hash table pointer for the PT entries
47 struct hashtable * cr3_cache;
48 // Hash table that contains a mapping of guest pte addresses to host pte addresses
49 struct hashtable * cached_ptes;
60 int cache_page_tables32(struct guest_info * info, addr_t pde);
62 int init_shadow_page_state(struct guest_info * info);
64 addr_t create_new_shadow_pt32();
66 int handle_shadow_pagefault(struct guest_info * info, addr_t fault_addr, pf_error_t error_code);
67 int handle_shadow_invlpg(struct guest_info * info);
72 int v3_replace_shdw_page(struct guest_info * info, addr_t location, void * new_page, void* old_page);
73 int v3_replace_shdw_page32(struct guest_info * info, addr_t location, pte32_t * new_page, pte32_t * old_page);