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, Steven Jaconette <stevenjaconette2007@u.northwestern.edu>
11 * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
12 * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
13 * All rights reserved.
15 * Author: Steven Jaconette <stevenjaconette2007@u.northwestern.edu>
17 * This is free software. You are permitted to use,
18 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
21 #ifndef __VMM_DIRECT_PAGING_32PAE_H__
22 #define __VMM_DIRECT_PAGING_32PAE_H__
24 #include <palacios/vmm_mem.h>
25 #include <palacios/vmm_paging.h>
26 #include <palacios/vmm.h>
27 #include <palacios/vm_guest_mem.h>
28 #include <palacios/vm_guest.h>
31 static inline int handle_passthrough_pagefault_32pae(struct guest_info * info,
33 pf_error_t error_code) {
34 pdpe32pae_t * pdpe = NULL;
35 pde32pae_t * pde = NULL;
36 pte32pae_t * pte = NULL;
39 int pdpe_index = PDPE32PAE_INDEX(fault_addr);
40 int pde_index = PDE32PAE_INDEX(fault_addr);
41 int pte_index = PTE32PAE_INDEX(fault_addr);
43 struct v3_shadow_region * region = v3_get_shadow_region(info, fault_addr);
46 PrintError("Invalid region in passthrough page fault 32PAE, addr=%p\n",
51 host_addr = v3_get_shadow_addr(region, fault_addr);
53 // Lookup the correct PDPE address based on the PAGING MODE
54 if (info->shdw_pg_mode == SHADOW_PAGING) {
55 pdpe = CR3_TO_PDPE32PAE_VA(info->ctrl_regs.cr3);
57 pdpe = CR3_TO_PDPE32PAE_VA(info->direct_map_pt);
60 // Fix up the PDPE entry
61 if (pdpe[pdpe_index].present == 0) {
62 pde = (pde32pae_t *)create_generic_pt_page();
64 pdpe[pdpe_index].present = 1;
65 // Set default PDPE Flags...
66 pdpe[pdpe_index].pd_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pde));
68 pde = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pdpe[pdpe_index].pd_base_addr));
72 // Fix up the PDE entry
73 if (pde[pde_index].present == 0) {
74 pte = (pte32pae_t *)create_generic_pt_page();
76 pde[pde_index].present = 1;
77 pde[pde_index].writable = 1;
78 pde[pde_index].user_page = 1;
80 pde[pde_index].pt_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pte));
82 pte = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pde[pde_index].pt_base_addr));
86 // Fix up the PTE entry
87 if (pte[pte_index].present == 0) {
88 pte[pte_index].user_page = 1;
90 if (region->host_type == SHDW_REGION_ALLOCATED) {
92 pte[pte_index].present = 1;
93 pte[pte_index].writable = 1;
95 pte[pte_index].page_base_addr = PAGE_BASE_ADDR(host_addr);
97 } else if (region->host_type == SHDW_REGION_WRITE_HOOK) {
99 pte[pte_index].present = 1;
100 pte[pte_index].writable = 0;
102 pte[pte_index].page_base_addr = PAGE_BASE_ADDR(host_addr);
104 } else if (region->host_type == SHDW_REGION_FULL_HOOK) {
106 return v3_handle_mem_full_hook(info, fault_addr, fault_addr, region, error_code);
109 PrintError("Unknown Region Type...\n");
114 if ( (region->host_type == SHDW_REGION_WRITE_HOOK) &&
115 (error_code.write == 1) ) {
116 return v3_handle_mem_wr_hook(info, fault_addr, fault_addr, region, error_code);