+/*
+ * This file is part of the Palacios Virtual Machine Monitor developed
+ * by the V3VEE Project with funding from the United States National
+ * Science Foundation and the Department of Energy.
+ *
+ * The V3VEE Project is a joint project between Northwestern University
+ * and the University of New Mexico. You can find out more at
+ * http://www.v3vee.org
+ *
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
+ *
+ * Author: Jack Lange <jarusl@cs.northwestern.edu>
+ *
+ * This is free software. You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
+
#include <palacios/vmm_paging.h>
#include <palacios/vmm.h>
#include <palacios/vm_guest_mem.h>
-extern struct vmm_os_hooks * os_hooks;
+
void delete_page_tables_pde32(pde32_t * pde) {
- int i, j;
+ int i;//, j;
if (pde == NULL) {
return;
for (i = 0; (i < MAX_PDE32_ENTRIES); i++) {
if (pde[i].present) {
- pte32_t * pte = (pte32_t *)(pde[i].pt_base_addr << PAGE_POWER);
-
- for (j = 0; (j < MAX_PTE32_ENTRIES); j++) {
+ // We double cast, first to an addr_t to handle 64 bit issues, then to the pointer
+ pte32_t * pte = (pte32_t *)((addr_t)(pde[i].pt_base_addr << PAGE_POWER));
+
+ /*
+ for (j = 0; (j < MAX_PTE32_ENTRIES); j++) {
if ((pte[j].present)) {
- os_hooks->free_page((void *)(pte[j].page_base_addr << PAGE_POWER));
+ os_hooks->free_page((void *)(pte[j].page_base_addr << PAGE_POWER));
}
- }
-
- os_hooks->free_page(pte);
+ }
+ */
+ //PrintDebug("Deleting PTE %d (%x)\n", i, pte);
+ V3_FreePage(pte);
}
}
- os_hooks->free_page(pde);
+ // PrintDebug("Deleting PDE (%x)\n", pde);
+ V3_FreePage(pde);
}
+int pt32_lookup(pde32_t * pd, addr_t vaddr, addr_t * paddr) {
+ addr_t pde_entry;
+ pde32_entry_type_t pde_entry_type;
+
+ if (pd == 0) {
+ return -1;
+ }
+
+ pde_entry_type = pde32_lookup(pd, vaddr, &pde_entry);
+
+ if (pde_entry_type == PDE32_ENTRY_PTE32) {
+ return pte32_lookup((pte32_t *)pde_entry, vaddr, paddr);
+ } else if (pde_entry_type == PDE32_ENTRY_LARGE_PAGE) {
+ *paddr = pde_entry;
+ return 0;
+ }
+
+ return -1;
+}
+
/* We can't do a full lookup because we don't know what context the page tables are in...
*entry = 0;
return PDE32_ENTRY_NOT_PRESENT;
} else {
- *entry = PAGE_ADDR(pde_entry->pt_base_addr);
-
+
if (pde_entry->large_page) {
- *entry += PAGE_OFFSET(addr);
+ pde32_4MB_t * large_pde = (pde32_4MB_t *)pde_entry;
+
+ *entry = PDE32_4MB_T_ADDR(*large_pde);
+ *entry += PD32_4MB_PAGE_OFFSET(addr);
return PDE32_ENTRY_LARGE_PAGE;
} else {
*entry = PDE32_T_ADDR(*pde_entry);
} else if ((entry->writable == 0) && (access_type.write == 1)) {
return PT_WRITE_ERROR;
} else if ((entry->user_page == 0) && (access_type.user == 1)) {
- // Check CR0.WP
+ // Check CR0.WP?
return PT_USER_ERROR;
}
} else if ((entry->writable == 0) && (access_type.write == 1)) {
return PT_WRITE_ERROR;
} else if ((entry->user_page == 0) && (access_type.user == 1)) {
- // Check CR0.WP
+ // Check CR0.WP?
return PT_USER_ERROR;
}
int i, j;
struct shadow_map * map = &(guest_info->mem_map);
- pde32_t * pde = os_hooks->allocate_pages(1);
+ pde32_t * pde = V3_AllocPages(1);
for (i = 0; i < MAX_PDE32_ENTRIES; i++) {
int pte_present = 0;
- pte32_t * pte = os_hooks->allocate_pages(1);
+ pte32_t * pte = V3_AllocPages(1);
for (j = 0; j < MAX_PTE32_ENTRIES; j++) {
- shadow_region_t * region = get_shadow_region_by_addr(map, current_page_addr);
+ struct shadow_region * region = get_shadow_region_by_addr(map, current_page_addr);
if (!region ||
- (region->host_type == HOST_REGION_NOTHING) ||
+ (region->host_type == HOST_REGION_HOOK) ||
(region->host_type == HOST_REGION_UNALLOCATED) ||
(region->host_type == HOST_REGION_MEMORY_MAPPED_DEVICE) ||
(region->host_type == HOST_REGION_REMOTE) ||
}
if (pte_present == 0) {
- os_hooks->free_page(pte);
+ V3_FreePage(pte);
pde[i].present = 0;
pde[i].writable = 0;
pde[i].large_page = 0;
pde[i].global_page = 0;
pde[i].vmm_info = 0;
- pde[i].pt_base_addr = PAGE_ALIGNED_ADDR(pte);
+ pde[i].pt_base_addr = PAGE_ALIGNED_ADDR((addr_t)pte);
}
}
void PrintPDE32(addr_t virtual_address, pde32_t * pde)
{
- PrintDebug("PDE %p -> %p : present=%x, writable=%x, user=%x, wt=%x, cd=%x, accessed=%x, reserved=%x, largePages=%x, globalPage=%x, kernelInfo=%x\n",
+ PrintDebug("PDE %x -> %p : present=%x, writable=%x, user=%x, wt=%x, cd=%x, accessed=%x, reserved=%x, largePages=%x, globalPage=%x, kernelInfo=%x\n",
virtual_address,
- (void *) (pde->pt_base_addr << PAGE_POWER),
+ (void *)(addr_t) (pde->pt_base_addr << PAGE_POWER),
pde->present,
pde->writable,
pde->user_page,
{
PrintDebug("PTE %p -> %p : present=%x, writable=%x, user=%x, wt=%x, cd=%x, accessed=%x, dirty=%x, pteAttribute=%x, globalPage=%x, vmm_info=%x\n",
virtual_address,
- (void*)(pte->page_base_addr << PAGE_POWER),
+ (void*)(addr_t)(pte->page_base_addr << PAGE_POWER),
pte->present,
pte->writable,
pte->user_page,
for (i = 0; (i < MAX_PDE32_ENTRIES); i++) {
if (pde[i].present) {
PrintPDE32((addr_t)(PAGE_SIZE * MAX_PTE32_ENTRIES * i), &(pde[i]));
- PrintPT32((addr_t)(PAGE_SIZE * MAX_PTE32_ENTRIES * i), (pte32_t *)(pde[i].pt_base_addr << PAGE_POWER));
+ PrintPT32((addr_t)(PAGE_SIZE * MAX_PTE32_ENTRIES * i), (pte32_t *)(addr_t)(pde[i].pt_base_addr << PAGE_POWER));
}
}
}