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 #include <palacios/vmm_direct_paging.h>
22 #include <palacios/vmm_paging.h>
23 #include <palacios/vmm.h>
24 #include <palacios/vm_guest_mem.h>
25 #include <palacios/vm_guest.h>
28 #ifndef CONFIG_DEBUG_NESTED_PAGING
30 #define PrintDebug(fmt, args...)
34 static addr_t create_generic_pt_page() {
36 page = V3_VAddr(V3_AllocPages(1));
37 memset(page, 0, PAGE_SIZE);
42 // Inline handler functions for each cpu mode
43 #include "vmm_direct_paging_32.h"
44 #include "vmm_direct_paging_32pae.h"
45 #include "vmm_direct_paging_64.h"
47 int v3_init_passthrough_pts(struct guest_info * info) {
48 info->direct_map_pt = (addr_t)V3_PAddr((void *)create_generic_pt_page());
52 int v3_reset_passthrough_pts(struct guest_info * info) {
53 v3_cpu_mode_t mode = v3_get_vm_cpu_mode(info);
55 // Delete the old direct map page tables
59 delete_page_tables_32((pde32_t *)V3_VAddr((void *)(info->direct_map_pt)));
64 // Long mode will only use 32PAE page tables...
65 delete_page_tables_32pae((pdpe32pae_t *)V3_VAddr((void *)(info->direct_map_pt)));
68 PrintError("Unknown CPU Mode\n");
72 // create new direct map page table
73 v3_init_passthrough_pts(info);
79 int v3_activate_passthrough_pt(struct guest_info * info) {
80 // For now... But we need to change this....
81 // As soon as shadow paging becomes active the passthrough tables are hosed
82 // So this will cause chaos if it is called at that time
84 info->ctrl_regs.cr3 = *(addr_t*)&(info->direct_map_pt);
85 //PrintError("Activate Passthrough Page tables not implemented\n");
90 int v3_handle_passthrough_pagefault(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) {
91 v3_cpu_mode_t mode = v3_get_vm_cpu_mode(info);
96 return handle_passthrough_pagefault_32(info, fault_addr, error_code);
101 // Long mode will only use 32PAE page tables...
102 return handle_passthrough_pagefault_32pae(info, fault_addr, error_code);
105 PrintError("Unknown CPU Mode\n");
113 int v3_handle_nested_pagefault(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) {
114 v3_cpu_mode_t mode = v3_get_host_cpu_mode();
117 PrintDebug("Nested PageFault: fault_addr=%p, error_code=%u\n", (void *)fault_addr, *(uint_t *)&error_code);
122 return handle_passthrough_pagefault_32(info, fault_addr, error_code);
125 return handle_passthrough_pagefault_32pae(info, fault_addr, error_code);
129 return handle_passthrough_pagefault_64(info, fault_addr, error_code);
132 PrintError("Unknown CPU Mode\n");
138 int v3_invalidate_passthrough_addr(struct guest_info * info, addr_t inv_addr) {
139 v3_cpu_mode_t mode = v3_get_vm_cpu_mode(info);
144 return invalidate_addr_32(info, inv_addr);
149 // Long mode will only use 32PAE page tables...
150 return invalidate_addr_32pae(info, inv_addr);
153 PrintError("Unknown CPU Mode\n");
160 int v3_invalidate_nested_addr(struct guest_info * info, addr_t inv_addr) {
161 v3_cpu_mode_t mode = LONG;
166 return invalidate_addr_32(info, inv_addr);
169 return invalidate_addr_32pae(info, inv_addr);
173 return invalidate_addr_64(info, inv_addr);
176 PrintError("Unknown CPU Mode\n");