2 * This file is part of the Palacios Virtual Machine Monitor developed
3 * by the V3VEE Project with funding from the United States National
4 * Science Foundation and the Department of Energy.
6 * The V3VEE Project is a joint project between Northwestern University
7 * and the University of New Mexico. You can find out more at
10 * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
11 * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
12 * All rights reserved.
14 * Author: Jack Lange <jarusl@cs.northwestern.edu>
16 * This is free software. You are permitted to use,
17 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
24 #include <palacios/svm.h>
25 #include <palacios/vmm.h>
27 #include <palacios/vmcb.h>
28 #include <palacios/vmm_mem.h>
29 #include <palacios/vmm_paging.h>
30 #include <palacios/svm_handler.h>
32 #include <palacios/vmm_debug.h>
33 #include <palacios/vm_guest_mem.h>
35 #include <palacios/vmm_decoder.h>
40 extern uint_t cpuid_ecx(uint_t op);
41 extern uint_t cpuid_edx(uint_t op);
42 extern void Get_MSR(uint_t MSR, uint_t * high_byte, uint_t * low_byte);
43 extern void Set_MSR(uint_t MSR, uint_t high_byte, uint_t low_byte);
44 extern uint_t launch_svm(vmcb_t * vmcb_addr);
45 extern void safe_svm_launch(vmcb_t * vmcb_addr, struct v3_gprs * gprs);
50 extern uint_t Get_CR3();
53 extern void DisableInts();
54 extern void EnableInts();
62 static vmcb_t * Allocate_VMCB() {
63 vmcb_t * vmcb_page = (vmcb_t *)V3_AllocPages(1);
66 memset(vmcb_page, 0, 4096);
75 static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
76 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
77 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
81 guest_state->rsp = vm_info->vm_regs.rsp;
82 // guest_state->rip = vm_info->rip;
83 guest_state->rip = 0xfff0;
87 //ctrl_area->instrs.instrs.CR0 = 1;
88 ctrl_area->cr_reads.cr0 = 1;
89 ctrl_area->cr_writes.cr0 = 1;
91 guest_state->efer |= EFER_MSR_svm_enable;
92 guest_state->rflags = 0x00000002; // The reserved bit is always 1
93 ctrl_area->svm_instrs.VMRUN = 1;
94 ctrl_area->svm_instrs.VMMCALL = 1;
95 ctrl_area->svm_instrs.VMLOAD = 1;
96 ctrl_area->svm_instrs.VMSAVE = 1;
97 ctrl_area->svm_instrs.STGI = 1;
98 ctrl_area->svm_instrs.CLGI = 1;
99 ctrl_area->svm_instrs.SKINIT = 1;
100 ctrl_area->svm_instrs.RDTSCP = 1;
101 ctrl_area->svm_instrs.ICEBP = 1;
102 ctrl_area->svm_instrs.WBINVD = 1;
103 ctrl_area->svm_instrs.MONITOR = 1;
104 ctrl_area->svm_instrs.MWAIT_always = 1;
105 ctrl_area->svm_instrs.MWAIT_if_armed = 1;
108 ctrl_area->instrs.HLT = 1;
109 // guest_state->cr0 = 0x00000001; // PE
110 ctrl_area->guest_ASID = 1;
114 ctrl_area->exceptions.de = 1;
115 ctrl_area->exceptions.df = 1;
117 ctrl_area->exceptions.ts = 1;
118 ctrl_area->exceptions.ss = 1;
119 ctrl_area->exceptions.ac = 1;
120 ctrl_area->exceptions.mc = 1;
121 ctrl_area->exceptions.gp = 1;
122 ctrl_area->exceptions.ud = 1;
123 ctrl_area->exceptions.np = 1;
124 ctrl_area->exceptions.of = 1;
126 ctrl_area->exceptions.nmi = 1;
128 // Debug of boot on physical machines - 7/14/08
129 ctrl_area->instrs.NMI=1;
130 ctrl_area->instrs.SMI=1;
131 ctrl_area->instrs.INIT=1;
132 ctrl_area->instrs.PAUSE=1;
133 ctrl_area->instrs.shutdown_evts=1;
137 vm_info->vm_regs.rdx = 0x00000f00;
139 guest_state->cr0 = 0x60000010;
141 guest_state->cs.selector = 0xf000;
142 guest_state->cs.limit=0xffff;
143 guest_state->cs.base = 0x0000000f0000LL;
144 guest_state->cs.attrib.raw = 0xf3;
147 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
148 for ( i = 0; segregs[i] != NULL; i++) {
149 struct vmcb_selector * seg = segregs[i];
151 seg->selector = 0x0000;
152 // seg->base = seg->selector << 4;
153 seg->base = 0x00000000;
154 seg->attrib.raw = 0xf3;
158 guest_state->gdtr.limit = 0x0000ffff;
159 guest_state->gdtr.base = 0x0000000000000000LL;
160 guest_state->idtr.limit = 0x0000ffff;
161 guest_state->idtr.base = 0x0000000000000000LL;
163 guest_state->ldtr.selector = 0x0000;
164 guest_state->ldtr.limit = 0x0000ffff;
165 guest_state->ldtr.base = 0x0000000000000000LL;
166 guest_state->tr.selector = 0x0000;
167 guest_state->tr.limit = 0x0000ffff;
168 guest_state->tr.base = 0x0000000000000000LL;
171 guest_state->dr6 = 0x00000000ffff0ff0LL;
172 guest_state->dr7 = 0x0000000000000400LL;
174 if (vm_info->io_map.num_ports > 0) {
175 struct vmm_io_hook * iter;
176 addr_t io_port_bitmap;
178 io_port_bitmap = (addr_t)V3_AllocPages(3);
179 memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
181 ctrl_area->IOPM_BASE_PA = io_port_bitmap;
183 //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
185 FOREACH_IO_HOOK(vm_info->io_map, iter) {
186 ushort_t port = iter->port;
187 uchar_t * bitmap = (uchar_t *)io_port_bitmap;
189 bitmap += (port / 8);
190 PrintDebug("Setting Bit for port 0x%x\n", port);
191 *bitmap |= 1 << (port % 8);
195 //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
197 ctrl_area->instrs.IOIO_PROT = 1;
202 PrintDebug("Exiting on interrupts\n");
203 ctrl_area->guest_ctrl.V_INTR_MASKING = 1;
204 ctrl_area->instrs.INTR = 1;
207 if (vm_info->shdw_pg_mode == SHADOW_PAGING) {
208 PrintDebug("Creating initial shadow page table\n");
209 vm_info->direct_map_pt = (addr_t)create_passthrough_pde32_pts(vm_info);
210 vm_info->shdw_pg_state.shadow_cr3 |= (vm_info->direct_map_pt & ~0xfff);
211 vm_info->shdw_pg_state.guest_cr0 = 0x0000000000000010LL;
212 PrintDebug("Created\n");
214 guest_state->cr3 = vm_info->shdw_pg_state.shadow_cr3;
216 //PrintDebugPageTables((pde32_t*)(vm_info->shdw_pg_state.shadow_cr3.e_reg.low));
218 ctrl_area->cr_reads.cr3 = 1;
219 ctrl_area->cr_writes.cr3 = 1;
222 ctrl_area->instrs.INVLPG = 1;
223 ctrl_area->instrs.INVLPGA = 1;
225 ctrl_area->exceptions.pf = 1;
227 /* JRL: This is a performance killer, and a simplistic solution */
228 /* We need to fix this */
229 ctrl_area->TLB_CONTROL = 1;
233 guest_state->g_pat = 0x7040600070406ULL;
235 guest_state->cr0 |= 0x80000000;
237 } else if (vm_info->shdw_pg_mode == NESTED_PAGING) {
238 // Flush the TLB on entries/exits
239 ctrl_area->TLB_CONTROL = 1;
241 // Enable Nested Paging
242 ctrl_area->NP_ENABLE = 1;
244 PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
246 // Set the Nested Page Table pointer
247 vm_info->direct_map_pt = ((addr_t)create_passthrough_pde32_pts(vm_info) & ~0xfff);
248 ctrl_area->N_CR3 = vm_info->direct_map_pt;
250 // ctrl_area->N_CR3 = Get_CR3();
251 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
253 guest_state->g_pat = 0x7040600070406ULL;
261 static int init_svm_guest(struct guest_info *info) {
263 PrintDebug("Allocating VMCB\n");
264 info->vmm_data = (void*)Allocate_VMCB();
267 //PrintDebug("Generating Guest nested page tables\n");
268 // info->page_tables = NULL;
269 //info->page_tables = generate_guest_page_tables_64(&(info->mem_layout), &(info->mem_list));
270 //info->page_tables = generate_guest_page_tables(&(info->mem_layout), &(info->mem_list));
271 // PrintDebugPageTables(info->page_tables);
274 PrintDebug("Initializing VMCB (addr=%x)\n", info->vmm_data);
275 Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), info);
278 info->run_state = VM_STOPPED;
282 info->vm_regs.rdi = 0;
283 info->vm_regs.rsi = 0;
284 info->vm_regs.rbp = 0;
285 info->vm_regs.rsp = 0;
286 info->vm_regs.rbx = 0;
287 info->vm_regs.rdx = 0;
288 info->vm_regs.rcx = 0;
289 info->vm_regs.rax = 0;
296 // can we start a kernel thread here...
297 int start_svm_guest(struct guest_info *info) {
298 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
299 vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
300 uint_t num_exits = 0;
304 PrintDebug("Launching SVM VM (vmcb=%x)\n", info->vmm_data);
305 //PrintDebugVMCB((vmcb_t*)(info->vmm_data));
307 info->run_state = VM_RUNNING;
316 // PrintDebug("SVM Entry to rip=%x...\n", info->rip);
318 rdtscll(info->time_state.cached_host_tsc);
319 guest_ctrl->TSC_OFFSET = info->time_state.guest_tsc - info->time_state.cached_host_tsc;
321 safe_svm_launch((vmcb_t*)(info->vmm_data), &(info->vm_regs));
324 //PrintDebug("SVM Returned\n");
327 v3_update_time(info, tmp_tsc - info->time_state.cached_host_tsc);
332 if ((num_exits % 25) == 0) {
333 PrintDebug("SVM Exit number %d\n", num_exits);
337 if (handle_svm_exit(info) != 0) {
340 addr_t linear_addr = 0;
342 info->run_state = VM_ERROR;
344 PrintDebug("SVM ERROR!!\n");
346 PrintDebug("RIP: %x\n", guest_state->rip);
349 linear_addr = get_addr_linear(info, guest_state->rip, &(info->segments.cs));
352 PrintDebug("RIP Linear: %x\n", linear_addr);
353 PrintV3Segments(info);
354 PrintV3CtrlRegs(info);
357 if (info->mem_mode == PHYSICAL_MEM) {
358 guest_pa_to_host_pa(info, linear_addr, &host_addr);
359 } else if (info->mem_mode == VIRTUAL_MEM) {
360 guest_va_to_host_pa(info, linear_addr, &host_addr);
364 PrintDebug("Host Address of rip = 0x%x\n", host_addr);
366 PrintDebug("Instr (15 bytes) at %x:\n", host_addr);
367 PrintTraceMemDump((char*)host_addr, 15);
379 /* Checks machine SVM capability */
380 /* Implemented from: AMD Arch Manual 3, sect 15.4 */
381 int is_svm_capable() {
387 uint_t vm_cr_low = 0, vm_cr_high = 0;
390 ret = cpuid_ecx(CPUID_FEATURE_IDS);
392 PrintDebug("CPUID_FEATURE_IDS_ecx=0x%x\n",ret);
394 if ((ret & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
395 PrintDebug("SVM Not Available\n");
398 Get_MSR(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
400 PrintDebug("SVM_VM_CR_MSR = 0x%x 0x%x\n",vm_cr_high,vm_cr_low);
402 if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 1) {
403 PrintDebug("SVM is available but is disabled.\n");
405 ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
407 PrintDebug("CPUID_FEATURE_IDS_edx=0x%x\n",ret);
409 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
410 PrintDebug("SVM BIOS Disabled, not unlockable\n");
412 PrintDebug("SVM is locked with a key\n");
417 PrintDebug("SVM is available and enabled.\n");
419 ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
421 PrintDebug("CPUID_FEATURE_IDS_edx=0x%x\n",ret);
423 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 0) {
424 PrintDebug("SVM Nested Paging not supported\n");
426 PrintDebug("SVM Nested Paging supported\n");
436 uint_t ret = cpuid_ecx(CPUID_FEATURE_IDS);
437 uint_t vm_cr_low = 0, vm_cr_high = 0;
440 if ((ret & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
441 PrintDebug("SVM Not Available\n");
445 Get_MSR(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
447 PrintDebug("SVM_VM_CR_MSR = 0x%x 0x%x\n",vm_cr_high,vm_cr_low);
450 // this part is clearly wrong, since the np bit is in
452 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 1) {
453 PrintDebug("Nested Paging not supported\n");
455 PrintDebug("Nested Paging supported\n");
458 if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 0) {
459 PrintDebug("SVM is disabled.\n");
463 ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
465 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
466 PrintDebug("SVM BIOS Disabled, not unlockable\n");
468 PrintDebug("SVM is locked with a key\n");
477 int has_svm_nested_paging() {
480 ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
482 //PrintDebug("CPUID_FEATURE_IDS_edx=0x%x\n",ret);
484 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 0) {
485 PrintDebug("SVM Nested Paging not supported\n");
488 PrintDebug("SVM Nested Paging supported\n");
496 void Init_SVM(struct vmm_ctrl_ops * vmm_ops) {
501 // Enable SVM on the CPU
502 Get_MSR(EFER_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
503 msr.e_reg.low |= EFER_MSR_svm_enable;
504 Set_MSR(EFER_MSR, 0, msr.e_reg.low);
506 PrintDebug("SVM Enabled\n");
509 // Setup the host state save area
510 host_state = V3_AllocPages(4);
513 msr.e_reg.low = (uint_t)host_state;
516 PrintDebug("Host State being saved at %x\n", (uint_t)host_state);
517 Set_MSR(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low);
521 // Setup the SVM specific vmm operations
522 vmm_ops->init_guest = &init_svm_guest;
523 vmm_ops->start_guest = &start_svm_guest;
524 vmm_ops->has_nested_paging = &has_svm_nested_paging;
580 /*static void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
581 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
582 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
586 guest_state->rsp = vm_info.vm_regs.rsp;
587 guest_state->rip = vm_info.rip;
590 //ctrl_area->instrs.instrs.CR0 = 1;
591 ctrl_area->cr_reads.cr0 = 1;
592 ctrl_area->cr_writes.cr0 = 1;
594 guest_state->efer |= EFER_MSR_svm_enable;
595 guest_state->rflags = 0x00000002; // The reserved bit is always 1
596 ctrl_area->svm_instrs.VMRUN = 1;
597 // guest_state->cr0 = 0x00000001; // PE
598 ctrl_area->guest_ASID = 1;
601 ctrl_area->exceptions.de = 1;
602 ctrl_area->exceptions.df = 1;
603 ctrl_area->exceptions.pf = 1;
604 ctrl_area->exceptions.ts = 1;
605 ctrl_area->exceptions.ss = 1;
606 ctrl_area->exceptions.ac = 1;
607 ctrl_area->exceptions.mc = 1;
608 ctrl_area->exceptions.gp = 1;
609 ctrl_area->exceptions.ud = 1;
610 ctrl_area->exceptions.np = 1;
611 ctrl_area->exceptions.of = 1;
612 ctrl_area->exceptions.nmi = 1;
614 guest_state->cs.selector = 0x0000;
615 guest_state->cs.limit=~0u;
616 guest_state->cs.base = guest_state->cs.selector<<4;
617 guest_state->cs.attrib.raw = 0xf3;
620 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
621 for ( i = 0; segregs[i] != NULL; i++) {
622 struct vmcb_selector * seg = segregs[i];
624 seg->selector = 0x0000;
625 seg->base = seg->selector << 4;
626 seg->attrib.raw = 0xf3;
630 if (vm_info.io_map.num_ports > 0) {
631 struct vmm_io_hook * iter;
632 addr_t io_port_bitmap;
634 io_port_bitmap = (addr_t)V3_AllocPages(3);
635 memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
637 ctrl_area->IOPM_BASE_PA = io_port_bitmap;
639 //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
641 FOREACH_IO_HOOK(vm_info.io_map, iter) {
642 ushort_t port = iter->port;
643 uchar_t * bitmap = (uchar_t *)io_port_bitmap;
645 bitmap += (port / 8);
646 PrintDebug("Setting Bit in block %x\n", bitmap);
647 *bitmap |= 1 << (port % 8);
651 //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
653 ctrl_area->instrs.IOIO_PROT = 1;
656 ctrl_area->instrs.INTR = 1;
660 if (vm_info.page_mode == SHADOW_PAGING) {
661 PrintDebug("Creating initial shadow page table\n");
662 vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
663 PrintDebug("Created\n");
665 guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3;
667 ctrl_area->cr_reads.cr3 = 1;
668 ctrl_area->cr_writes.cr3 = 1;
671 ctrl_area->instrs.INVLPG = 1;
672 ctrl_area->instrs.INVLPGA = 1;
674 guest_state->g_pat = 0x7040600070406ULL;
676 guest_state->cr0 |= 0x80000000;
677 } else if (vm_info.page_mode == NESTED_PAGING) {
678 // Flush the TLB on entries/exits
679 //ctrl_area->TLB_CONTROL = 1;
681 // Enable Nested Paging
682 //ctrl_area->NP_ENABLE = 1;
684 //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
686 // Set the Nested Page Table pointer
687 // ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
688 // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
690 // ctrl_area->N_CR3 = Get_CR3();
691 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
693 // guest_state->g_pat = 0x7040600070406ULL;
708 void Init_VMCB_pe(vmcb_t *vmcb, struct guest_info vm_info) {
709 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
710 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
714 guest_state->rsp = vm_info.vm_regs.rsp;
715 guest_state->rip = vm_info.rip;
718 /* I pretty much just gutted this from TVMM */
719 /* Note: That means its probably wrong */
721 // set the segment registers to mirror ours
722 guest_state->cs.selector = 1<<3;
723 guest_state->cs.attrib.fields.type = 0xa; // Code segment+read
724 guest_state->cs.attrib.fields.S = 1;
725 guest_state->cs.attrib.fields.P = 1;
726 guest_state->cs.attrib.fields.db = 1;
727 guest_state->cs.attrib.fields.G = 1;
728 guest_state->cs.limit = 0xfffff;
729 guest_state->cs.base = 0;
731 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
732 for ( i = 0; segregs[i] != NULL; i++) {
733 struct vmcb_selector * seg = segregs[i];
735 seg->selector = 2<<3;
736 seg->attrib.fields.type = 0x2; // Data Segment+read/write
737 seg->attrib.fields.S = 1;
738 seg->attrib.fields.P = 1;
739 seg->attrib.fields.db = 1;
740 seg->attrib.fields.G = 1;
741 seg->limit = 0xfffff;
747 /* JRL THIS HAS TO GO */
749 // guest_state->tr.selector = GetTR_Selector();
750 guest_state->tr.attrib.fields.type = 0x9;
751 guest_state->tr.attrib.fields.P = 1;
752 // guest_state->tr.limit = GetTR_Limit();
753 //guest_state->tr.base = GetTR_Base();// - 0x2000;
761 guest_state->efer |= EFER_MSR_svm_enable;
762 guest_state->rflags = 0x00000002; // The reserved bit is always 1
763 ctrl_area->svm_instrs.VMRUN = 1;
764 guest_state->cr0 = 0x00000001; // PE
765 ctrl_area->guest_ASID = 1;
768 // guest_state->cpl = 0;
774 ctrl_area->cr_writes.cr4 = 1;
776 ctrl_area->exceptions.de = 1;
777 ctrl_area->exceptions.df = 1;
778 ctrl_area->exceptions.pf = 1;
779 ctrl_area->exceptions.ts = 1;
780 ctrl_area->exceptions.ss = 1;
781 ctrl_area->exceptions.ac = 1;
782 ctrl_area->exceptions.mc = 1;
783 ctrl_area->exceptions.gp = 1;
784 ctrl_area->exceptions.ud = 1;
785 ctrl_area->exceptions.np = 1;
786 ctrl_area->exceptions.of = 1;
787 ctrl_area->exceptions.nmi = 1;
791 ctrl_area->instrs.IOIO_PROT = 1;
792 ctrl_area->IOPM_BASE_PA = (uint_t)V3_AllocPages(3);
796 tmp_reg.r_reg = ctrl_area->IOPM_BASE_PA;
797 memset((void*)(tmp_reg.e_reg.low), 0xffffffff, PAGE_SIZE * 2);
800 ctrl_area->instrs.INTR = 1;
807 memset(gdt_buf, 0, 6);
808 memset(idt_buf, 0, 6);
811 uint_t gdt_base, idt_base;
812 ushort_t gdt_limit, idt_limit;
815 gdt_base = *(ulong_t*)((uchar_t*)gdt_buf + 2) & 0xffffffff;
816 gdt_limit = *(ushort_t*)(gdt_buf) & 0xffff;
817 PrintDebug("GDT: base: %x, limit: %x\n", gdt_base, gdt_limit);
820 idt_base = *(ulong_t*)(idt_buf + 2) & 0xffffffff;
821 idt_limit = *(ushort_t*)(idt_buf) & 0xffff;
822 PrintDebug("IDT: base: %x, limit: %x\n",idt_base, idt_limit);
825 // gdt_base -= 0x2000;
826 //idt_base -= 0x2000;
828 guest_state->gdtr.base = gdt_base;
829 guest_state->gdtr.limit = gdt_limit;
830 guest_state->idtr.base = idt_base;
831 guest_state->idtr.limit = idt_limit;
837 // also determine if CPU supports nested paging
839 if (vm_info.page_tables) {
841 // Flush the TLB on entries/exits
842 ctrl_area->TLB_CONTROL = 1;
844 // Enable Nested Paging
845 ctrl_area->NP_ENABLE = 1;
847 PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
849 // Set the Nested Page Table pointer
850 ctrl_area->N_CR3 |= ((addr_t)vm_info.page_tables & 0xfffff000);
853 // ctrl_area->N_CR3 = Get_CR3();
854 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
856 guest_state->g_pat = 0x7040600070406ULL;
858 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));
859 PrintDebug("Set Guest CR3: lo: 0x%x hi: 0x%x\n", (uint_t)*(&(guest_state->cr3)), (uint_t)*((unsigned char *)&(guest_state->cr3) + 4));
861 // guest_state->cr0 |= 0x80000000;