#include <palacios/vmm.h>
#include <palacios/vm_guest_mem.h>
#include <palacios/vm_guest.h>
+#include <palacios/vmm_ctrl_regs.h>
-#ifndef DEBUG_NESTED_PAGING
+#ifndef V3_CONFIG_DEBUG_NESTED_PAGING
#undef PrintDebug
#define PrintDebug(fmt, args...)
#endif
-static addr_t create_generic_pt_page() {
+static addr_t create_generic_pt_page(struct guest_info *core) {
void * page = 0;
- page = V3_VAddr(V3_AllocPages(1));
+ 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;
#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->direct_map_pt = (addr_t)V3_PAddr((void *)create_generic_pt_page(info));
return 0;
}
-int v3_reset_passthrough_pts(struct guest_info * info) {
- v3_cpu_mode_t mode = v3_get_vm_cpu_mode(info);
+
+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:
- delete_page_tables_32((pde32_t *)V3_VAddr((void *)(info->direct_map_pt)));
- break;
+ // 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 *)(info->direct_map_pt)));
+ delete_page_tables_32pae((pdpe32pae_t *)V3_VAddr((void *)(core->direct_map_pt)));
break;
default:
- PrintError("Unknown CPU Mode\n");
+ 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(info);
+ 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
-
- info->ctrl_regs.cr3 = *(addr_t*)&(info->direct_map_pt);
- //PrintError("Activate Passthrough Page tables not implemented\n");
+ 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;
}
switch(mode) {
case REAL:
case PROTECTED:
- return handle_passthrough_pagefault_32(info, fault_addr, error_code);
-
+ // Note intentional fallthrough here
+ // There are only PAE page tables now
case PROTECTED_PAE:
case LONG:
case LONG_32_COMPAT:
return handle_passthrough_pagefault_32pae(info, fault_addr, error_code);
default:
- PrintError("Unknown CPU Mode\n");
+ 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()
+ v3_cpu_mode_t mode = v3_get_host_cpu_mode();
- PrintDebug("Nested PageFault: fault_addr=%p, error_code=%u\n",(void*)fault_addr, *(uint_t *)&error_code);
+ 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:
return handle_passthrough_pagefault_64(info, fault_addr, error_code);
default:
- PrintError("Unknown CPU Mode\n");
+ PrintError(info->vm_info, info, "Unknown CPU Mode\n");
break;
}
return -1;
switch(mode) {
case REAL:
case PROTECTED:
- return invalidate_addr_32(info, inv_addr);
-
+ // Intentional fallthrough - there
+ // are only PAE page tables now
case PROTECTED_PAE:
case LONG:
case LONG_32_COMPAT:
return invalidate_addr_32pae(info, inv_addr);
default:
- PrintError("Unknown CPU Mode\n");
+ 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:
return invalidate_addr_64(info, inv_addr);
default:
- PrintError("Unknown CPU Mode\n");
+ 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;
}
