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_mem_region * region = v3_get_mem_region(info->vm_info, info->vcpu_id, fault_addr);
46 PrintError(info->vm_info, info, "Invalid region in passthrough page fault 32PAE, addr=%p\n",
51 // Lookup the correct PDPE address based on the PAGING MODE
52 if (info->shdw_pg_mode == SHADOW_PAGING) {
53 pdpe = CR3_TO_PDPE32PAE_VA(info->ctrl_regs.cr3);
55 pdpe = CR3_TO_PDPE32PAE_VA(info->direct_map_pt);
58 // Fix up the PDPE entry
59 if (pdpe[pdpe_index].present == 0) {
60 pde = (pde32pae_t *)create_generic_pt_page();
62 pdpe[pdpe_index].present = 1;
63 // Set default PDPE Flags...
64 pdpe[pdpe_index].pd_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pde));
66 pde = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pdpe[pdpe_index].pd_base_addr));
70 // Fix up the PDE entry
71 if (pde[pde_index].present == 0) {
72 pte = (pte32pae_t *)create_generic_pt_page();
74 pde[pde_index].present = 1;
75 pde[pde_index].writable = 1;
76 pde[pde_index].user_page = 1;
78 pde[pde_index].pt_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pte));
80 pte = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pde[pde_index].pt_base_addr));
84 // Fix up the PTE entry
85 if (pte[pte_index].present == 0) {
86 pte[pte_index].user_page = 1;
88 if ((region->flags.alloced == 1) &&
89 (region->flags.read == 1)) {
91 pte[pte_index].present = 1;
93 if (region->flags.write == 1) {
94 pte[pte_index].writable = 1;
96 pte[pte_index].writable = 0;
99 if (v3_gpa_to_hpa(info, fault_addr, &host_addr) == -1) {
100 PrintError(info->vm_info, info, "Could not translate fault address (%p)\n", (void *)fault_addr);
104 pte[pte_index].page_base_addr = PAGE_BASE_ADDR(host_addr);
106 return region->unhandled(info, fault_addr, fault_addr, region, error_code);
109 return region->unhandled(info, fault_addr, fault_addr, region, error_code);
116 static inline int invalidate_addr_32pae(struct guest_info * info, addr_t inv_addr) {
117 pdpe32pae_t * pdpe = NULL;
118 pde32pae_t * pde = NULL;
119 pte32pae_t * pte = NULL;
125 // clear the page table entry
126 int pdpe_index = PDPE32PAE_INDEX(inv_addr);
127 int pde_index = PDE32PAE_INDEX(inv_addr);
128 int pte_index = PTE32PAE_INDEX(inv_addr);
131 // Lookup the correct PDE address based on the PAGING MODE
132 if (info->shdw_pg_mode == SHADOW_PAGING) {
133 pdpe = CR3_TO_PDPE32PAE_VA(info->ctrl_regs.cr3);
135 pdpe = CR3_TO_PDPE32PAE_VA(info->direct_map_pt);
139 if (pdpe[pdpe_index].present == 0) {
143 pde = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pdpe[pdpe_index].pd_base_addr));
145 if (pde[pde_index].present == 0) {
147 } else if (pde[pde_index].large_page) {
148 pde[pde_index].present = 0;
152 pte = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pde[pde_index].pt_base_addr));
154 pte[pte_index].present = 0;