+/*
+ * 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, Steven Jaconette <stevenjaconette2007@u.northwestern.edu>
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
+ *
+ * Author: Steven Jaconette <stevenjaconette2007@u.northwestern.edu>
+ *
+ * This is free software. You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
+
#ifndef __VMM_DIRECT_PAGING_H__
#define __VMM_DIRECT_PAGING_H__
#include <palacios/vmm_mem.h>
#include <palacios/vmm_paging.h>
-pde32_t * v3_create_direct_passthrough_pts(struct guest_info * guest_info);
+addr_t v3_create_direct_passthrough_pts(struct guest_info * guest_info);
int v3_handle_passthrough_pagefault(struct guest_info * info, addr_t fault_addr, pf_error_t error_code);
/* Testing 64 bit page tables for long paged real mode guests */
// vm_info->direct_map_pt = (addr_t)V3_PAddr(create_passthrough_pts_64(vm_info));
- vm_info->direct_map_pt = (addr_t)V3_PAddr(v3_create_direct_passthrough_pts(vm_info));
+ vm_info->direct_map_pt = (addr_t)V3_PAddr((void *)v3_create_direct_passthrough_pts(vm_info));
/* End Test */
vm_info->shdw_pg_state.guest_cr0 = 0x0000000000000010LL;
+/*
+ * 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, Steven Jaconette <stevenjaconette2007@u.northwestern.edu>
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
+ *
+ * Author: Steven Jaconette <stevenjaconette2007@u.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_direct_paging.h>
#include <palacios/vmm_paging.h>
#include <palacios/vmm.h>
#include <palacios/vm_guest_mem.h>
#include <palacios/vm_guest.h>
+static addr_t create_generic_pt_page() {
+ void * page = 0;
+ page = V3_VAddr(V3_AllocPages(1));
+ memset(page, 0, PAGE_SIZE);
+ return (addr_t)page;
+}
// Inline handler functions for each cpu mode
#include "vmm_direct_paging_32.h"
+#include "vmm_direct_paging_32pae.h"
-pde32_t * v3_create_direct_passthrough_pts(struct guest_info * info) {
- v3_vm_cpu_mode_t mode = v3_get_cpu_mode(info);
- switch(mode) {
- case REAL:
- case PROTECTED:
- return create_direct_passthrough_pts_32(info);
- case PROTECTED_PAE:
- break;
- case LONG:
- break;
- case LONG_32_COMPAT:
- break;
- default:
- PrintError("Unknown CPU Mode\n");
- break;
- }
- return NULL;
+
+addr_t v3_create_direct_passthrough_pts(struct guest_info * info) {
+ return create_generic_pt_page();
}
int v3_handle_passthrough_pagefault(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) {
case PROTECTED:
return handle_passthrough_pagefault_32(info, fault_addr, error_code);
case PROTECTED_PAE:
- break;
+ return handle_passthrough_pagefault_32pae(info, fault_addr, error_code);
case LONG:
break;
case LONG_32_COMPAT:
+/*
+ * 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, Steven Jaconette <stevenjaconette2007@u.northwestern.edu>
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
+ *
+ * Author: Steven Jaconette <stevenjaconette2007@u.northwestern.edu>
+ *
+ * This is free software. You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
+
+
#ifndef __VMM_DIRECT_PAGING_32_H__
#define __VMM_DIRECT_PAGING_32_H__
#include <palacios/vm_guest_mem.h>
#include <palacios/vm_guest.h>
-static pde32_t * create_pde32() {
- void * pde = 0;
- pde = V3_VAddr(V3_AllocPages(1));
- memset(pde, 0, PAGE_SIZE);
-
- return (pde32_t *) pde;
-}
-
-
-static pte32_t * create_pte32() {
- void * pte = 0;
- pte = V3_VAddr(V3_AllocPages(1));
- memset(pte, 0, PAGE_SIZE);
-
- return (pte32_t *) pte;
-}
-
-
-static inline pde32_t * create_direct_passthrough_pts_32(struct guest_info * info) {
- return create_pde32();
-}
-
static inline int handle_passthrough_pagefault_32(struct guest_info * info,
addr_t fault_addr,
pf_error_t error_code) {
// Check to see if pde and pte exist (create them if not)
pde32_t * pde = CR3_TO_PDE32_VA(info->ctrl_regs.cr3);
+ pte32_t * pte = NULL;
+ addr_t host_addr = 0;
+
int pde_index = PDE32_INDEX(fault_addr);
int pte_index = PTE32_INDEX(fault_addr);
- if (pde[pde_index].present != 1) {
-
- PrintError("Creating new page table for PTE index: %d\n", pde_index);
-
- pte32_t * pte = create_pte32();
- addr_t host_addr;
+ struct v3_shadow_region * region = v3_get_shadow_region(info, fault_addr);
- if(guest_pa_to_host_pa(info, fault_addr, &host_addr) == -1) return -1;
+ if ((region == NULL) ||
+ (region->host_type == SHDW_REGION_INVALID)) {
+ PrintError("Invalid region in passthrough page fault 32PAE, addr=%p\n",
+ (void *)fault_addr);
+ return -1;
+ }
- struct v3_shadow_region * region = v3_get_shadow_region(info, PAGE_BASE_ADDR(host_addr));
+ host_addr = v3_get_shadow_addr(region, fault_addr);
- pte[pte_index].present = 1;
- pte[pte_index].writable = 1;
- pte[pte_index].user_page = 1;
- pte[pte_index].page_base_addr = PAGE_BASE_ADDR(host_addr);
+ // Fix up the PDE entry
+ if (pde[pde_index].present == 0) {
+ pte = (pte32_t *)create_generic_pt_page();
pde[pde_index].present = 1;
pde[pde_index].writable = 1;
pde[pde_index].user_page = 1;
pde[pde_index].pt_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pte));
-
- if (region->host_type == SHDW_REGION_WRITE_HOOK) {
- pte[pte_index].writable = 0;
- }
-
- PrintError("Fault Addr: 0x%p\nHost Addr: 0x%p\n", (void*)fault_addr, (void*)host_addr);
-
+
} else {
- pte32_t * pte = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pde[pde_index].pt_base_addr));
-
- if (pte[pte_index].present != 1) {
- addr_t host_addr;
-
- if (guest_pa_to_host_pa(info, fault_addr, &host_addr) == -1) return -1;
-
- struct v3_shadow_region * region = v3_get_shadow_region(info, PAGE_BASE_ADDR(host_addr));
-
+ pte = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pde[pde_index].pt_base_addr));
+ }
+
+ // Fix up the PTE entry
+ if (pte[pte_index].present == 0) {
+
+ pte[pte_index].user_page = 1;
+
+ if (region->host_type == SHDW_REGION_ALLOCATED) {
+ // Full access
pte[pte_index].present = 1;
pte[pte_index].writable = 1;
- pte[pte_index].user_page = 1;
+
pte[pte_index].page_base_addr = PAGE_BASE_ADDR(host_addr);
-
- if (region->host_type == SHDW_REGION_WRITE_HOOK) {
- pte[pte_index].writable = 0;
- }
+ } else if (region->host_type == SHDW_REGION_WRITE_HOOK) {
+ // Only trap writes
+ pte[pte_index].present = 1;
+ pte[pte_index].writable = 0;
+
+ pte[pte_index].page_base_addr = PAGE_BASE_ADDR(host_addr);
+ } else if (region->host_type == SHDW_REGION_FULL_HOOK) {
+ // trap all accesses
+ return v3_handle_mem_full_hook(info, fault_addr, fault_addr, region, error_code);
+ } else {
+ PrintError("Unknown Region Type...\n");
+ return -1;
+ }
+ } else {
+ if ( (region->host_type == SHDW_REGION_WRITE_HOOK) &&
+ (error_code.write == 1) ) {
+ return v3_handle_mem_wr_hook(info, fault_addr, fault_addr, region, error_code);
+ } else {
+ PrintError("Weird...\n");
+ return -1;
}
}
+
return 0;
}
--- /dev/null
+/*
+ * 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, Steven Jaconette <stevenjaconette2007@u.northwestern.edu>
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
+ *
+ * Author: Steven Jaconette <stevenjaconette2007@u.northwestern.edu>
+ *
+ * This is free software. You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
+
+#ifndef __VMM_DIRECT_PAGING_32PAE_H__
+#define __VMM_DIRECT_PAGING_32PAE_H__
+
+#include <palacios/vmm_mem.h>
+#include <palacios/vmm_paging.h>
+#include <palacios/vmm.h>
+#include <palacios/vm_guest_mem.h>
+#include <palacios/vm_guest.h>
+
+
+static inline int handle_passthrough_pagefault_32pae(struct guest_info * info,
+ addr_t fault_addr,
+ pf_error_t error_code) {
+ pdpe32pae_t * pdpe = CR3_TO_PDPE32PAE_VA(info->ctrl_regs.cr3);
+ pde32pae_t * pde = NULL;
+ pte32pae_t * pte = NULL;
+ addr_t host_addr = 0;
+
+ int pdpe_index = PDPE32PAE_INDEX(fault_addr);
+ int pde_index = PDE32PAE_INDEX(fault_addr);
+ int pte_index = PTE32PAE_INDEX(fault_addr);
+
+ struct v3_shadow_region * region = v3_get_shadow_region(info, fault_addr);
+
+ if ((region == NULL) ||
+ (region->host_type == SHDW_REGION_INVALID)) {
+ PrintError("Invalid region in passthrough page fault 32PAE, addr=%p\n",
+ (void *)fault_addr);
+ return -1;
+ }
+
+ host_addr = v3_get_shadow_addr(region, fault_addr);
+
+ // Fix up the PDPE entry
+ if (pdpe[pdpe_index].present == 0) {
+ pde = (pde32pae_t *)create_generic_pt_page();
+
+ pdpe[pdpe_index].present = 1;
+ // Set default PDPE Flags...
+ pdpe[pdpe_index].pd_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pde));
+ } else {
+ pde = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pdpe[pdpe_index].pd_base_addr));
+ }
+
+
+ // Fix up the PDE entry
+ if (pde[pde_index].present == 0) {
+ pte = (pte32pae_t *)create_generic_pt_page();
+
+ pde[pde_index].present = 1;
+ pde[pde_index].writable = 1;
+ pde[pde_index].user_page = 1;
+
+ pde[pde_index].pt_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pte));
+ } else {
+ pte = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pde[pde_index].pt_base_addr));
+ }
+
+
+ // Fix up the PTE entry
+ if (pte[pte_index].present == 0) {
+ pte[pte_index].user_page = 1;
+
+ if (region->host_type == SHDW_REGION_ALLOCATED) {
+ // Full access
+ pte[pte_index].present = 1;
+ pte[pte_index].writable = 1;
+
+ pte[pte_index].page_base_addr = PAGE_BASE_ADDR(host_addr);
+
+ } else if (region->host_type == SHDW_REGION_WRITE_HOOK) {
+ // Only trap writes
+ pte[pte_index].present = 1;
+ pte[pte_index].writable = 0;
+
+ pte[pte_index].page_base_addr = PAGE_BASE_ADDR(host_addr);
+
+ } else if (region->host_type == SHDW_REGION_FULL_HOOK) {
+ // trap all accesses
+ return v3_handle_mem_full_hook(info, fault_addr, fault_addr, region, error_code);
+
+ } else {
+ PrintError("Unknown Region Type...\n");
+ return -1;
+ }
+ } else {
+ if ( (region->host_type == SHDW_REGION_WRITE_HOOK) &&
+ (error_code.write == 1) ) {
+ return v3_handle_mem_wr_hook(info, fault_addr, fault_addr, region, error_code);
+ } else {
+ PrintError("Weird...\n");
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+
+#endif
