1 #include <palacios/svm.h>
2 #include <palacios/vmm.h>
4 #include <palacios/vmcb.h>
5 #include <palacios/vmm_mem.h>
6 #include <palacios/vmm_paging.h>
7 #include <palacios/svm_handler.h>
9 #include <palacios/vmm_debug.h>
10 #include <palacios/vm_guest_mem.h>
14 extern struct vmm_os_hooks * os_hooks;
16 extern uint_t cpuid_ecx(uint_t op);
17 extern uint_t cpuid_edx(uint_t op);
18 extern void Get_MSR(uint_t MSR, uint_t * high_byte, uint_t * low_byte);
19 extern void Set_MSR(uint_t MSR, uint_t high_byte, uint_t low_byte);
20 extern uint_t launch_svm(vmcb_t * vmcb_addr);
21 extern void safe_svm_launch(vmcb_t * vmcb_addr, struct guest_gprs * gprs);
23 extern uint_t Get_CR3();
25 extern void GetGDTR(void * gdt);
26 extern void GetIDTR(void * idt);
28 extern void DisableInts();
30 /* Checks machine SVM capability */
31 /* Implemented from: AMD Arch Manual 3, sect 15.4 */
32 int is_svm_capable() {
33 uint_t ret = cpuid_ecx(CPUID_FEATURE_IDS);
34 uint_t vm_cr_low = 0, vm_cr_high = 0;
37 if ((ret & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
38 PrintDebug("SVM Not Available\n");
42 Get_MSR(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
44 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 1) {
45 PrintDebug("Nested Paging not supported\n");
48 if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 0) {
52 ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
54 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
55 PrintDebug("SVM BIOS Disabled, not unlockable\n");
57 PrintDebug("SVM is locked with a key\n");
65 void Init_SVM(struct vmm_ctrl_ops * vmm_ops) {
70 // Enable SVM on the CPU
71 Get_MSR(EFER_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
72 msr.e_reg.low |= EFER_MSR_svm_enable;
73 Set_MSR(EFER_MSR, 0, msr.e_reg.low);
75 PrintDebug("SVM Enabled\n");
78 // Setup the host state save area
79 host_state = os_hooks->allocate_pages(4);
82 msr.e_reg.low = (uint_t)host_state;
85 PrintDebug("Host State being saved at %x\n", (uint_t)host_state);
86 Set_MSR(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low);
90 // Setup the SVM specific vmm operations
91 vmm_ops->init_guest = &init_svm_guest;
92 vmm_ops->start_guest = &start_svm_guest;
99 int init_svm_guest(struct guest_info *info) {
101 PrintDebug("Allocating VMCB\n");
102 info->vmm_data = (void*)Allocate_VMCB();
105 //PrintDebug("Generating Guest nested page tables\n");
106 // info->page_tables = NULL;
107 //info->page_tables = generate_guest_page_tables_64(&(info->mem_layout), &(info->mem_list));
108 //info->page_tables = generate_guest_page_tables(&(info->mem_layout), &(info->mem_list));
109 // PrintDebugPageTables(info->page_tables);
112 PrintDebug("Initializing VMCB (addr=%x)\n", info->vmm_data);
113 Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), *info);
118 info->vm_regs.rdi = 0;
119 info->vm_regs.rsi = 0;
120 info->vm_regs.rbp = 0;
121 info->vm_regs.rsp = 0;
122 info->vm_regs.rbx = 0;
123 info->vm_regs.rdx = 0;
124 info->vm_regs.rcx = 0;
125 info->vm_regs.rax = 0;
131 // can we start a kernel thread here...
132 int start_svm_guest(struct guest_info *info) {
136 PrintDebug("Launching SVM VM (vmcb=%x)\n", info->vmm_data);
137 //PrintDebugVMCB((vmcb_t*)(info->vmm_data));
141 //PrintDebug("SVM Launch Args (vmcb=%x), (info=%x), (vm_regs=%x)\n", info->vmm_data, &(info->vm_regs));
142 //PrintDebug("Launching to RIP: %x\n", info->rip);
143 safe_svm_launch((vmcb_t*)(info->vmm_data), &(info->vm_regs));
144 //launch_svm((vmcb_t*)(info->vmm_data));
145 //PrintDebug("SVM Returned\n");
147 if (handle_svm_exit(info) != 0) {
148 // handle exit code....
157 vmcb_t * Allocate_VMCB() {
158 vmcb_t * vmcb_page = (vmcb_t*)os_hooks->allocate_pages(1);
161 memset(vmcb_page, 0, 4096);
168 void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
169 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
170 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
174 guest_state->rsp = vm_info.vm_regs.rsp;
175 guest_state->rip = vm_info.rip;
178 //ctrl_area->instrs.instrs.CR0 = 1;
179 ctrl_area->cr_reads.cr0 = 1;
180 ctrl_area->cr_writes.cr0 = 1;
182 guest_state->efer |= EFER_MSR_svm_enable;
183 guest_state->rflags = 0x00000002; // The reserved bit is always 1
184 ctrl_area->svm_instrs.VMRUN = 1;
185 // guest_state->cr0 = 0x00000001; // PE
186 ctrl_area->guest_ASID = 1;
189 ctrl_area->exceptions.de = 1;
190 ctrl_area->exceptions.df = 1;
191 ctrl_area->exceptions.pf = 1;
192 ctrl_area->exceptions.ts = 1;
193 ctrl_area->exceptions.ss = 1;
194 ctrl_area->exceptions.ac = 1;
195 ctrl_area->exceptions.mc = 1;
196 ctrl_area->exceptions.gp = 1;
197 ctrl_area->exceptions.ud = 1;
198 ctrl_area->exceptions.np = 1;
199 ctrl_area->exceptions.of = 1;
200 ctrl_area->exceptions.nmi = 1;
202 guest_state->cs.selector = 0x0000;
203 guest_state->cs.limit=~0u;
204 guest_state->cs.base = guest_state->cs.selector<<4;
205 guest_state->cs.attrib.raw = 0xf3;
208 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
209 for ( i = 0; segregs[i] != NULL; i++) {
210 struct vmcb_selector * seg = segregs[i];
212 seg->selector = 0x0000;
213 seg->base = seg->selector << 4;
214 seg->attrib.raw = 0xf3;
218 if (vm_info.io_map.num_ports > 0) {
219 vmm_io_hook_t * iter;
220 addr_t io_port_bitmap;
222 io_port_bitmap = (addr_t)os_hooks->allocate_pages(3);
223 memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
225 ctrl_area->IOPM_BASE_PA = io_port_bitmap;
227 //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
229 FOREACH_IO_HOOK(vm_info.io_map, iter) {
230 ushort_t port = iter->port;
231 uchar_t * bitmap = (uchar_t *)io_port_bitmap;
233 bitmap += (port / 8);
234 PrintDebug("Setting Bit in block %x\n", bitmap);
235 *bitmap |= 1 << (port % 8);
239 //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
241 ctrl_area->instrs.IOIO_PROT = 1;
244 ctrl_area->instrs.INTR = 1;
248 if (vm_info.page_mode == SHADOW_PAGING) {
249 PrintDebug("Creating initial shadow page table\n");
250 vm_info.shdw_pg_state.shadow_cr3.e_reg.low |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
251 PrintDebug("Created\n");
253 guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3.r_reg;
255 ctrl_area->cr_reads.cr3 = 1;
256 ctrl_area->cr_writes.cr3 = 1;
259 ctrl_area->instrs.INVLPG = 1;
260 ctrl_area->instrs.INVLPGA = 1;
262 guest_state->g_pat = 0x7040600070406ULL;
264 guest_state->cr0 |= 0x80000000;
265 } else if (vm_info.page_mode == NESTED_PAGING) {
266 // Flush the TLB on entries/exits
267 //ctrl_area->TLB_CONTROL = 1;
269 // Enable Nested Paging
270 //ctrl_area->NP_ENABLE = 1;
272 //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
274 // Set the Nested Page Table pointer
275 // ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
276 // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
278 // ctrl_area->N_CR3 = Get_CR3();
279 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
281 // guest_state->g_pat = 0x7040600070406ULL;
290 void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) {
291 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
292 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
296 guest_state->rsp = vm_info.vm_regs.rsp;
297 // guest_state->rip = vm_info.rip;
298 guest_state->rip = 0xfff0;
300 //ctrl_area->instrs.instrs.CR0 = 1;
301 ctrl_area->cr_reads.cr0 = 1;
302 ctrl_area->cr_writes.cr0 = 1;
304 guest_state->efer |= EFER_MSR_svm_enable;
305 guest_state->rflags = 0x00000002; // The reserved bit is always 1
306 ctrl_area->svm_instrs.VMRUN = 1;
307 // guest_state->cr0 = 0x00000001; // PE
308 ctrl_area->guest_ASID = 1;
310 ctrl_area->exceptions.de = 1;
311 ctrl_area->exceptions.df = 1;
312 ctrl_area->exceptions.pf = 1;
313 ctrl_area->exceptions.ts = 1;
314 ctrl_area->exceptions.ss = 1;
315 ctrl_area->exceptions.ac = 1;
316 ctrl_area->exceptions.mc = 1;
317 ctrl_area->exceptions.gp = 1;
318 ctrl_area->exceptions.ud = 1;
319 ctrl_area->exceptions.np = 1;
320 ctrl_area->exceptions.of = 1;
321 ctrl_area->exceptions.nmi = 1;
323 vm_info.vm_regs.rdx = 0x00000f00;
325 guest_state->cr0 = 0x60000010;
327 guest_state->cs.selector = 0xf000;
328 guest_state->cs.limit=0xffff;
329 guest_state->cs.base = 0x0000000f0000LL;
330 guest_state->cs.attrib.raw = 0xf3;
333 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
334 for ( i = 0; segregs[i] != NULL; i++) {
335 struct vmcb_selector * seg = segregs[i];
337 seg->selector = 0x0000;
338 // seg->base = seg->selector << 4;
339 seg->base = 0x00000000;
340 seg->attrib.raw = 0xf3;
344 guest_state->gdtr.limit = 0x0000ffff;
345 guest_state->gdtr.base = 0x0000000000000000LL;
346 guest_state->idtr.limit = 0x0000ffff;
347 guest_state->idtr.base = 0x0000000000000000LL;
349 guest_state->ldtr.selector = 0x0000;
350 guest_state->ldtr.limit = 0x0000ffff;
351 guest_state->ldtr.base = 0x0000000000000000LL;
352 guest_state->tr.selector = 0x0000;
353 guest_state->tr.limit = 0x0000ffff;
354 guest_state->tr.base = 0x0000000000000000LL;
357 guest_state->dr6 = 0x00000000ffff0ff0LL;
358 guest_state->dr7 = 0x0000000000000400LL;
360 if (vm_info.io_map.num_ports > 0) {
361 vmm_io_hook_t * iter;
362 addr_t io_port_bitmap;
364 io_port_bitmap = (addr_t)os_hooks->allocate_pages(3);
365 memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
367 ctrl_area->IOPM_BASE_PA = io_port_bitmap;
369 //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
371 FOREACH_IO_HOOK(vm_info.io_map, iter) {
372 ushort_t port = iter->port;
373 uchar_t * bitmap = (uchar_t *)io_port_bitmap;
375 bitmap += (port / 8);
376 PrintDebug("Setting Bit for port 0x%x\n", port);
377 *bitmap |= 1 << (port % 8);
381 //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
383 ctrl_area->instrs.IOIO_PROT = 1;
386 //ctrl_area->instrs.instrs.INTR = 1;
390 if (vm_info.page_mode == SHADOW_PAGING) {
391 PrintDebug("Creating initial shadow page table\n");
392 vm_info.shdw_pg_state.shadow_cr3.e_reg.low |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
393 PrintDebug("Created\n");
395 guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3.r_reg;
397 //PrintDebugPageTables((pde32_t*)(vm_info.shdw_pg_state.shadow_cr3.e_reg.low));
399 ctrl_area->cr_reads.cr3 = 1;
400 ctrl_area->cr_writes.cr3 = 1;
403 ctrl_area->instrs.INVLPG = 1;
404 ctrl_area->instrs.INVLPGA = 1;
406 guest_state->g_pat = 0x7040600070406ULL;
408 guest_state->cr0 |= 0x80000000;
409 } else if (vm_info.page_mode == NESTED_PAGING) {
410 // Flush the TLB on entries/exits
411 //ctrl_area->TLB_CONTROL = 1;
413 // Enable Nested Paging
414 //ctrl_area->NP_ENABLE = 1;
416 //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
418 // Set the Nested Page Table pointer
419 // ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
420 // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
422 // ctrl_area->N_CR3 = Get_CR3();
423 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
425 // guest_state->g_pat = 0x7040600070406ULL;
433 void Init_VMCB_pe(vmcb_t *vmcb, struct guest_info vm_info) {
434 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
435 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
439 guest_state->rsp = vm_info.vm_regs.rsp;
440 guest_state->rip = vm_info.rip;
443 /* I pretty much just gutted this from TVMM */
444 /* Note: That means its probably wrong */
446 // set the segment registers to mirror ours
447 guest_state->cs.selector = 1<<3;
448 guest_state->cs.attrib.fields.type = 0xa; // Code segment+read
449 guest_state->cs.attrib.fields.S = 1;
450 guest_state->cs.attrib.fields.P = 1;
451 guest_state->cs.attrib.fields.db = 1;
452 guest_state->cs.attrib.fields.G = 1;
453 guest_state->cs.limit = 0xfffff;
454 guest_state->cs.base = 0;
456 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
457 for ( i = 0; segregs[i] != NULL; i++) {
458 struct vmcb_selector * seg = segregs[i];
460 seg->selector = 2<<3;
461 seg->attrib.fields.type = 0x2; // Data Segment+read/write
462 seg->attrib.fields.S = 1;
463 seg->attrib.fields.P = 1;
464 seg->attrib.fields.db = 1;
465 seg->attrib.fields.G = 1;
466 seg->limit = 0xfffff;
472 /* JRL THIS HAS TO GO */
474 // guest_state->tr.selector = GetTR_Selector();
475 guest_state->tr.attrib.fields.type = 0x9;
476 guest_state->tr.attrib.fields.P = 1;
477 // guest_state->tr.limit = GetTR_Limit();
478 //guest_state->tr.base = GetTR_Base();// - 0x2000;
486 guest_state->efer |= EFER_MSR_svm_enable;
487 guest_state->rflags = 0x00000002; // The reserved bit is always 1
488 ctrl_area->svm_instrs.VMRUN = 1;
489 guest_state->cr0 = 0x00000001; // PE
490 ctrl_area->guest_ASID = 1;
493 // guest_state->cpl = 0;
499 ctrl_area->cr_writes.cr4 = 1;
501 ctrl_area->exceptions.de = 1;
502 ctrl_area->exceptions.df = 1;
503 ctrl_area->exceptions.pf = 1;
504 ctrl_area->exceptions.ts = 1;
505 ctrl_area->exceptions.ss = 1;
506 ctrl_area->exceptions.ac = 1;
507 ctrl_area->exceptions.mc = 1;
508 ctrl_area->exceptions.gp = 1;
509 ctrl_area->exceptions.ud = 1;
510 ctrl_area->exceptions.np = 1;
511 ctrl_area->exceptions.of = 1;
512 ctrl_area->exceptions.nmi = 1;
516 ctrl_area->instrs.IOIO_PROT = 1;
517 ctrl_area->IOPM_BASE_PA = (uint_t)os_hooks->allocate_pages(3);
521 tmp_reg.r_reg = ctrl_area->IOPM_BASE_PA;
522 memset((void*)(tmp_reg.e_reg.low), 0xffffffff, PAGE_SIZE * 2);
525 ctrl_area->instrs.INTR = 1;
532 memset(gdt_buf, 0, 6);
533 memset(idt_buf, 0, 6);
536 uint_t gdt_base, idt_base;
537 ushort_t gdt_limit, idt_limit;
540 gdt_base = *(ulong_t*)((uchar_t*)gdt_buf + 2) & 0xffffffff;
541 gdt_limit = *(ushort_t*)(gdt_buf) & 0xffff;
542 PrintDebug("GDT: base: %x, limit: %x\n", gdt_base, gdt_limit);
545 idt_base = *(ulong_t*)(idt_buf + 2) & 0xffffffff;
546 idt_limit = *(ushort_t*)(idt_buf) & 0xffff;
547 PrintDebug("IDT: base: %x, limit: %x\n",idt_base, idt_limit);
550 // gdt_base -= 0x2000;
551 //idt_base -= 0x2000;
553 guest_state->gdtr.base = gdt_base;
554 guest_state->gdtr.limit = gdt_limit;
555 guest_state->idtr.base = idt_base;
556 guest_state->idtr.limit = idt_limit;
562 // also determine if CPU supports nested paging
564 if (vm_info.page_tables) {
566 // Flush the TLB on entries/exits
567 ctrl_area->TLB_CONTROL = 1;
569 // Enable Nested Paging
570 ctrl_area->NP_ENABLE = 1;
572 PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
574 // Set the Nested Page Table pointer
575 ctrl_area->N_CR3 |= ((addr_t)vm_info.page_tables & 0xfffff000);
578 // ctrl_area->N_CR3 = Get_CR3();
579 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
581 guest_state->g_pat = 0x7040600070406ULL;
583 PrintDebug("Set Nested CR3: lo: 0x%x hi: 0x%x\n", (uint_t)*(&(ctrl_area->N_CR3)), (uint_t)*((unsigned char *)&(ctrl_area->N_CR3) + 4));
584 PrintDebug("Set Guest CR3: lo: 0x%x hi: 0x%x\n", (uint_t)*(&(guest_state->cr3)), (uint_t)*((unsigned char *)&(guest_state->cr3) + 4));
586 // guest_state->cr0 |= 0x80000000;
614 void Init_VMCB_Real(vmcb_t * vmcb, struct guest_info vm_info) {
615 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
616 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
620 guest_state->rsp = vm_info.vm_regs.rsp;
621 guest_state->rip = vm_info.rip;
624 guest_state->efer |= EFER_MSR_svm_enable;
625 guest_state->rflags = 0x00000002; // The reserved bit is always 1
626 ctrl_area->svm_instrs.instrs.VMRUN = 1;
627 ctrl_area->guest_ASID = 1;
628 guest_state->cr0 = 0x60000010;
631 ctrl_area->exceptions.de = 1;
632 ctrl_area->exceptions.df = 1;
633 ctrl_area->exceptions.pf = 1;
634 ctrl_area->exceptions.ts = 1;
635 ctrl_area->exceptions.ss = 1;
636 ctrl_area->exceptions.ac = 1;
637 ctrl_area->exceptions.mc = 1;
638 ctrl_area->exceptions.gp = 1;
639 ctrl_area->exceptions.ud = 1;
640 ctrl_area->exceptions.np = 1;
641 ctrl_area->exceptions.of = 1;
642 ctrl_area->exceptions.nmi = 1;
644 guest_state->cs.selector = 0xf000;
645 guest_state->cs.limit=0xffff;
646 guest_state->cs.base = 0xffff0000;
647 guest_state->cs.attrib.raw = 0x9a;
650 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
651 for ( i = 0; segregs[i] != NULL; i++) {
652 struct vmcb_selector * seg = segregs[i];
654 seg->selector = 0x0000;
655 seg->base = 0xffff0000;
656 seg->attrib.raw = 0x9b;
663 // EAX, EBX, ECX, ESI, EDI, EBP, ESP == 0x0
666 guest_state->gdtr.base = 0;
667 guest_state->gdtr.limit = 0xffff;
668 guest_state->gdtr.attrib.raw = 0x0;
670 guest_state->idtr.base = 0;
671 guest_state->idtr.limit = 0xffff;
672 guest_state->idtr.attrib.raw = 0x0;
674 guest_state->ldtr.base = 0;
675 guest_state->ldtr.limit = 0xffff;
676 guest_state->ldtr.attrib.raw = 0x82;
678 guest_state->tr.base = 0;
679 guest_state->tr.limit = 0xffff;
680 guest_state->tr.attrib.raw = 0x83;
685 if (vm_info.io_map.num_ports > 0) {
686 vmm_io_hook_t * iter;
687 addr_t io_port_bitmap;
689 io_port_bitmap = (addr_t)os_hooks->allocate_pages(3);
690 memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
692 ctrl_area->IOPM_BASE_PA = io_port_bitmap;
694 //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
696 FOREACH_IO_HOOK(vm_info.io_map, iter) {
697 ushort_t port = iter->port;
698 uchar_t * bitmap = (uchar_t *)io_port_bitmap;
700 bitmap += (port / 8);
701 PrintDebug("Setting Bit in block %x\n", bitmap);
702 *bitmap |= 1 << (port % 8);
705 ctrl_area->instrs.instrs.IOIO_PROT = 1;
708 ctrl_area->instrs.instrs.INTR = 1;
710 // also determine if CPU supports nested paging
712 if (vm_info.page_mode == SHADOW_PAGING) {
713 PrintDebug("Creating initial shadow page table\n");
714 vm_info.shdw_pg_state.shadow_cr3.e_reg.low |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
715 PrintDebug("Created\n");
717 guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3.r_reg;
719 ctrl_area->cr_reads.crs.cr3 = 1;
720 ctrl_area->cr_writes.crs.cr3 = 1;
721 ctrl_area->cr_reads.crs.cr0 = 1;
722 ctrl_area->cr_writes.crs.cr0 = 1;
724 ctrl_area->instrs.instrs.INVLPG = 1;
725 ctrl_area->instrs.instrs.INVLPGA = 1;
728 guest_state->g_pat = 0x7040600070406ULL;
730 vm_info.shdw_pg_state.guest_cr0.e_reg.low = guest_state->cr0;
731 guest_state->cr0 |= 0x80000000;
732 } else if (vm_info.page_mode == NESTED_PAGING) {
733 // Flush the TLB on entries/exits
734 //ctrl_area->TLB_CONTROL = 1;
736 // Enable Nested Paging
737 //ctrl_area->NP_ENABLE = 1;
739 //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
741 // Set the Nested Page Table pointer
742 // ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
743 // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
745 // ctrl_area->N_CR3 = Get_CR3();
746 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
748 // guest_state->g_pat = 0x7040600070406ULL;