-#include <palacios/vmm_direct_paging.h>
-
-// Inline handler functions for each cpu mode
-#include "vmm_direct_paging_32.h"
+/*
+ * 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>
+#include <palacios/vmm_ctrl_regs.h>
+
+
+#ifndef V3_CONFIG_DEBUG_NESTED_PAGING
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
+
+
+static addr_t create_generic_pt_page(struct guest_info *core) {
+ void * page = 0;
+ void *temp;
+
+ temp = V3_AllocPagesExtended(1, PAGE_SIZE_4KB, -1, 0); // no constraints
+
+ if (!temp) {
+ PrintError(VM_NONE, VCORE_NONE,"Cannot allocate page\n");
+ return 0;
+ }
+
+ page = V3_VAddr(temp);
+ 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"
+#include "vmm_direct_paging_64.h"
+
+int v3_init_passthrough_pts(struct guest_info * info) {
+ info->direct_map_pt = (addr_t)V3_PAddr((void *)create_generic_pt_page(info));
+ return 0;
+}
+
+
+int v3_free_passthrough_pts(struct guest_info * core) {
+ v3_cpu_mode_t mode = v3_get_vm_cpu_mode(core);
+
+ // Delete the old direct map page tables
+ switch(mode) {
+ case REAL:
+ case PROTECTED:
+ // Intentional fallthrough here
+ // There are *only* PAE tables
+ case PROTECTED_PAE:
+ case LONG:
+ case LONG_32_COMPAT:
+ // Long mode will only use 32PAE page tables...
+ delete_page_tables_32pae((pdpe32pae_t *)V3_VAddr((void *)(core->direct_map_pt)));
+ break;
+ default:
+ PrintError(core->vm_info, core, "Unknown CPU Mode\n");
+ return -1;
+ break;
+ }
+
+ return 0;
+}
+
+
+int v3_reset_passthrough_pts(struct guest_info * core) {
+
+ v3_free_passthrough_pts(core);
+
+ // create new direct map page table
+ v3_init_passthrough_pts(core);
+
+ return 0;
+}
+
+
+
+int v3_activate_passthrough_pt(struct guest_info * info) {
+ // For now... But we need to change this....
+ // As soon as shadow paging becomes active the passthrough tables are hosed
+ // So this will cause chaos if it is called at that time
+ struct cr3_32_PAE * shadow_cr3 = (struct cr3_32_PAE *) &(info->ctrl_regs.cr3);
+ struct cr4_32 * shadow_cr4 = (struct cr4_32 *) &(info->ctrl_regs.cr4);
+ addr_t shadow_pt_addr = *(addr_t*)&(info->direct_map_pt);
+ // Passthrough PTs will only be PAE page tables.
+ shadow_cr3->pdpt_base_addr = shadow_pt_addr >> 5;
+ shadow_cr4->pae = 1;
+ PrintDebug(info->vm_info, info, "Activated Passthrough Page tables\n");
+ return 0;
+}
+
+
+int v3_handle_passthrough_pagefault(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) {
+ v3_cpu_mode_t mode = v3_get_vm_cpu_mode(info);
+
+ switch(mode) {
+ case REAL:
+ case PROTECTED:
+ // Note intentional fallthrough here
+ // There are only PAE page tables now
+ case PROTECTED_PAE:
+ case LONG:
+ case LONG_32_COMPAT:
+ // Long mode will only use 32PAE page tables...
+ return handle_passthrough_pagefault_32pae(info, fault_addr, error_code);
+
+ default:
+ PrintError(info->vm_info, info, "Unknown CPU Mode\n");
+ break;
+ }
+ return -1;
+}
+
+
+
+int v3_handle_nested_pagefault(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) {
+ v3_cpu_mode_t mode = v3_get_host_cpu_mode();
+
+
+ PrintDebug(info->vm_info, info, "Nested PageFault: fault_addr=%p, error_code=%u\n", (void *)fault_addr, *(uint_t *)&error_code);
+
+ switch(mode) {
+ case REAL:
+ case PROTECTED:
+ return handle_passthrough_pagefault_32(info, fault_addr, error_code);
+
+ case PROTECTED_PAE:
+ return handle_passthrough_pagefault_32pae(info, fault_addr, error_code);
+
+ case LONG:
+ case LONG_32_COMPAT:
+ return handle_passthrough_pagefault_64(info, fault_addr, error_code);
+
+ default:
+ PrintError(info->vm_info, info, "Unknown CPU Mode\n");
+ break;
+ }
+ return -1;
+}
+
+int v3_invalidate_passthrough_addr(struct guest_info * info, addr_t inv_addr) {
+ v3_cpu_mode_t mode = v3_get_vm_cpu_mode(info);
+
+ switch(mode) {
+ case REAL:
+ case PROTECTED:
+ // Intentional fallthrough - there
+ // are only PAE page tables now
+ case PROTECTED_PAE:
+ case LONG:
+ case LONG_32_COMPAT:
+ // Long mode will only use 32PAE page tables...
+ return invalidate_addr_32pae(info, inv_addr);
+
+ default:
+ PrintError(info->vm_info, info, "Unknown CPU Mode\n");
+ break;
+ }
+ return -1;
+}
+
+
+int v3_invalidate_passthrough_addr_range(struct guest_info * info,
+ addr_t inv_addr_start, addr_t inv_addr_end) {
+ v3_cpu_mode_t mode = v3_get_vm_cpu_mode(info);
+
+ switch(mode) {
+ case REAL:
+ case PROTECTED:
+ // Intentional fallthrough
+ // There are only PAE PTs now
+ case PROTECTED_PAE:
+ case LONG:
+ case LONG_32_COMPAT:
+ // Long mode will only use 32PAE page tables...
+ return invalidate_addr_32pae_range(info, inv_addr_start, inv_addr_end);
+
+ default:
+ PrintError(info->vm_info, info, "Unknown CPU Mode\n");
+ break;
+ }
+ return -1;
+}
+
+int v3_invalidate_nested_addr(struct guest_info * info, addr_t inv_addr) {
+
+#ifdef __V3_64BIT__
+ v3_cpu_mode_t mode = LONG;
+#else
+ v3_cpu_mode_t mode = PROTECTED;
+#endif
+
+ switch(mode) {
+ case REAL:
+ case PROTECTED:
+ return invalidate_addr_32(info, inv_addr);
+
+ case PROTECTED_PAE:
+ return invalidate_addr_32pae(info, inv_addr);
+
+ case LONG:
+ case LONG_32_COMPAT:
+ return invalidate_addr_64(info, inv_addr);
+
+ default:
+ PrintError(info->vm_info, info, "Unknown CPU Mode\n");
+ break;
+ }
+
+ return -1;
+}
+
+int v3_invalidate_nested_addr_range(struct guest_info * info,
+ addr_t inv_addr_start, addr_t inv_addr_end) {
+
+#ifdef __V3_64BIT__
+ v3_cpu_mode_t mode = LONG;
+#else
+ v3_cpu_mode_t mode = PROTECTED;
+#endif
+
+ switch(mode) {
+ case REAL:
+ case PROTECTED:
+ return invalidate_addr_32_range(info, inv_addr_start, inv_addr_end);
+
+ case PROTECTED_PAE:
+ return invalidate_addr_32pae_range(info, inv_addr_start, inv_addr_end);
+
+ case LONG:
+ case LONG_32_COMPAT:
+ return invalidate_addr_64_range(info, inv_addr_start, inv_addr_end);
+
+ default:
+ PrintError(info->vm_info, info, "Unknown CPU Mode\n");
+ break;
+ }
-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:
- //break;
- case PROTECTED:
- PrintError("ABC\n");
- return v3_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;
-}
-
-int v3_handle_shadow_pagefault_physical_mode(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) {
- v3_vm_cpu_mode_t mode = v3_get_cpu_mode(info);
- switch(mode) {
- case REAL:
- // break;
- case PROTECTED:
- return v3_handle_shadow_pagefault_physical_mode_32(info, fault_addr, error_code);
- case PROTECTED_PAE:
- break;
- case LONG:
- break;
- case LONG_32_COMPAT:
- break;
- default:
- PrintError("Unknown CPU Mode\n");
- break;
- }
- return -1;
+ return -1;
}
