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>
36 #include <palacios/vmm_string.h>
41 extern uint_t cpuid_ecx(uint_t op);
42 extern uint_t cpuid_edx(uint_t op);
43 extern void Get_MSR(uint_t MSR, uint_t * high_byte, uint_t * low_byte);
44 extern void Set_MSR(uint_t MSR, uint_t high_byte, uint_t low_byte);
45 extern uint_t launch_svm(vmcb_t * vmcb_addr);
46 extern void safe_svm_launch(vmcb_t * vmcb_addr, struct v3_gprs * gprs);
51 extern uint_t Get_CR3();
54 extern void DisableInts();
55 extern void EnableInts();
63 static vmcb_t * Allocate_VMCB() {
64 vmcb_t * vmcb_page = (vmcb_t *)V3_AllocPages(1);
67 memset(vmcb_page, 0, 4096);
76 static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
77 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
78 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
82 guest_state->rsp = vm_info->vm_regs.rsp;
83 // guest_state->rip = vm_info->rip;
84 guest_state->rip = 0xfff0;
88 //ctrl_area->instrs.instrs.CR0 = 1;
89 ctrl_area->cr_reads.cr0 = 1;
90 ctrl_area->cr_writes.cr0 = 1;
92 guest_state->efer |= EFER_MSR_svm_enable;
93 guest_state->rflags = 0x00000002; // The reserved bit is always 1
94 ctrl_area->svm_instrs.VMRUN = 1;
95 ctrl_area->svm_instrs.VMMCALL = 1;
96 ctrl_area->svm_instrs.VMLOAD = 1;
97 ctrl_area->svm_instrs.VMSAVE = 1;
98 ctrl_area->svm_instrs.STGI = 1;
99 ctrl_area->svm_instrs.CLGI = 1;
100 ctrl_area->svm_instrs.SKINIT = 1;
101 ctrl_area->svm_instrs.RDTSCP = 1;
102 ctrl_area->svm_instrs.ICEBP = 1;
103 ctrl_area->svm_instrs.WBINVD = 1;
104 ctrl_area->svm_instrs.MONITOR = 1;
105 ctrl_area->svm_instrs.MWAIT_always = 1;
106 ctrl_area->svm_instrs.MWAIT_if_armed = 1;
109 ctrl_area->instrs.HLT = 1;
110 // guest_state->cr0 = 0x00000001; // PE
111 ctrl_area->guest_ASID = 1;
115 ctrl_area->exceptions.de = 1;
116 ctrl_area->exceptions.df = 1;
118 ctrl_area->exceptions.ts = 1;
119 ctrl_area->exceptions.ss = 1;
120 ctrl_area->exceptions.ac = 1;
121 ctrl_area->exceptions.mc = 1;
122 ctrl_area->exceptions.gp = 1;
123 ctrl_area->exceptions.ud = 1;
124 ctrl_area->exceptions.np = 1;
125 ctrl_area->exceptions.of = 1;
127 ctrl_area->exceptions.nmi = 1;
129 // Debug of boot on physical machines - 7/14/08
130 ctrl_area->instrs.NMI=1;
131 ctrl_area->instrs.SMI=1;
132 ctrl_area->instrs.INIT=1;
133 ctrl_area->instrs.PAUSE=1;
134 ctrl_area->instrs.shutdown_evts=1;
138 vm_info->vm_regs.rdx = 0x00000f00;
140 guest_state->cr0 = 0x60000010;
142 guest_state->cs.selector = 0xf000;
143 guest_state->cs.limit=0xffff;
144 guest_state->cs.base = 0x0000000f0000LL;
145 guest_state->cs.attrib.raw = 0xf3;
148 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
149 for ( i = 0; segregs[i] != NULL; i++) {
150 struct vmcb_selector * seg = segregs[i];
152 seg->selector = 0x0000;
153 // seg->base = seg->selector << 4;
154 seg->base = 0x00000000;
155 seg->attrib.raw = 0xf3;
159 guest_state->gdtr.limit = 0x0000ffff;
160 guest_state->gdtr.base = 0x0000000000000000LL;
161 guest_state->idtr.limit = 0x0000ffff;
162 guest_state->idtr.base = 0x0000000000000000LL;
164 guest_state->ldtr.selector = 0x0000;
165 guest_state->ldtr.limit = 0x0000ffff;
166 guest_state->ldtr.base = 0x0000000000000000LL;
167 guest_state->tr.selector = 0x0000;
168 guest_state->tr.limit = 0x0000ffff;
169 guest_state->tr.base = 0x0000000000000000LL;
172 guest_state->dr6 = 0x00000000ffff0ff0LL;
173 guest_state->dr7 = 0x0000000000000400LL;
175 if (vm_info->io_map.num_ports > 0) {
176 struct vmm_io_hook * iter;
177 addr_t io_port_bitmap;
179 io_port_bitmap = (addr_t)V3_AllocPages(3);
180 memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
182 ctrl_area->IOPM_BASE_PA = io_port_bitmap;
184 //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
186 FOREACH_IO_HOOK(vm_info->io_map, iter) {
187 ushort_t port = iter->port;
188 uchar_t * bitmap = (uchar_t *)io_port_bitmap;
190 bitmap += (port / 8);
191 PrintDebug("Setting Bit for port 0x%x\n", port);
192 *bitmap |= 1 << (port % 8);
196 //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
198 ctrl_area->instrs.IOIO_PROT = 1;
203 PrintDebug("Exiting on interrupts\n");
204 ctrl_area->guest_ctrl.V_INTR_MASKING = 1;
205 ctrl_area->instrs.INTR = 1;
208 if (vm_info->shdw_pg_mode == SHADOW_PAGING) {
209 PrintDebug("Creating initial shadow page table\n");
210 vm_info->direct_map_pt = (addr_t)create_passthrough_pde32_pts(vm_info);
211 vm_info->shdw_pg_state.shadow_cr3 |= (vm_info->direct_map_pt & ~0xfff);
212 vm_info->shdw_pg_state.guest_cr0 = 0x0000000000000010LL;
213 PrintDebug("Created\n");
215 guest_state->cr3 = vm_info->shdw_pg_state.shadow_cr3;
217 //PrintDebugPageTables((pde32_t*)(vm_info->shdw_pg_state.shadow_cr3.e_reg.low));
219 ctrl_area->cr_reads.cr3 = 1;
220 ctrl_area->cr_writes.cr3 = 1;
223 ctrl_area->instrs.INVLPG = 1;
224 ctrl_area->instrs.INVLPGA = 1;
226 ctrl_area->exceptions.pf = 1;
228 /* JRL: This is a performance killer, and a simplistic solution */
229 /* We need to fix this */
230 ctrl_area->TLB_CONTROL = 1;
234 guest_state->g_pat = 0x7040600070406ULL;
236 guest_state->cr0 |= 0x80000000;
238 } else if (vm_info->shdw_pg_mode == NESTED_PAGING) {
239 // Flush the TLB on entries/exits
240 ctrl_area->TLB_CONTROL = 1;
242 // Enable Nested Paging
243 ctrl_area->NP_ENABLE = 1;
245 PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
247 // Set the Nested Page Table pointer
248 vm_info->direct_map_pt = ((addr_t)create_passthrough_pde32_pts(vm_info) & ~0xfff);
249 ctrl_area->N_CR3 = vm_info->direct_map_pt;
251 // ctrl_area->N_CR3 = Get_CR3();
252 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
254 guest_state->g_pat = 0x7040600070406ULL;
262 static int init_svm_guest(struct guest_info *info) {
264 PrintDebug("Allocating VMCB\n");
265 info->vmm_data = (void*)Allocate_VMCB();
268 //PrintDebug("Generating Guest nested page tables\n");
269 // info->page_tables = NULL;
270 //info->page_tables = generate_guest_page_tables_64(&(info->mem_layout), &(info->mem_list));
271 //info->page_tables = generate_guest_page_tables(&(info->mem_layout), &(info->mem_list));
272 // PrintDebugPageTables(info->page_tables);
275 PrintDebug("Initializing VMCB (addr=%x)\n", info->vmm_data);
276 Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), info);
279 info->run_state = VM_STOPPED;
283 info->vm_regs.rdi = 0;
284 info->vm_regs.rsi = 0;
285 info->vm_regs.rbp = 0;
286 info->vm_regs.rsp = 0;
287 info->vm_regs.rbx = 0;
288 info->vm_regs.rdx = 0;
289 info->vm_regs.rcx = 0;
290 info->vm_regs.rax = 0;
297 // can we start a kernel thread here...
298 int start_svm_guest(struct guest_info *info) {
299 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
300 vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
301 uint_t num_exits = 0;
305 PrintDebug("Launching SVM VM (vmcb=%x)\n", info->vmm_data);
306 //PrintDebugVMCB((vmcb_t*)(info->vmm_data));
308 info->run_state = VM_RUNNING;
317 // PrintDebug("SVM Entry to rip=%x...\n", info->rip);
319 rdtscll(info->time_state.cached_host_tsc);
320 guest_ctrl->TSC_OFFSET = info->time_state.guest_tsc - info->time_state.cached_host_tsc;
322 safe_svm_launch((vmcb_t*)(info->vmm_data), &(info->vm_regs));
325 //PrintDebug("SVM Returned\n");
328 v3_update_time(info, tmp_tsc - info->time_state.cached_host_tsc);
333 if ((num_exits % 25) == 0) {
334 PrintDebug("SVM Exit number %d\n", num_exits);
338 if (handle_svm_exit(info) != 0) {
341 addr_t linear_addr = 0;
343 info->run_state = VM_ERROR;
345 PrintDebug("SVM ERROR!!\n");
347 PrintDebug("RIP: %x\n", guest_state->rip);
350 linear_addr = get_addr_linear(info, guest_state->rip, &(info->segments.cs));
353 PrintDebug("RIP Linear: %x\n", linear_addr);
354 PrintV3Segments(info);
355 PrintV3CtrlRegs(info);
358 if (info->mem_mode == PHYSICAL_MEM) {
359 guest_pa_to_host_pa(info, linear_addr, &host_addr);
360 } else if (info->mem_mode == VIRTUAL_MEM) {
361 guest_va_to_host_pa(info, linear_addr, &host_addr);
365 PrintDebug("Host Address of rip = 0x%x\n", host_addr);
367 PrintDebug("Instr (15 bytes) at %x:\n", host_addr);
368 PrintTraceMemDump((char*)host_addr, 15);
380 /* Checks machine SVM capability */
381 /* Implemented from: AMD Arch Manual 3, sect 15.4 */
382 int is_svm_capable() {
388 uint_t vm_cr_low = 0, vm_cr_high = 0;
391 ret = cpuid_ecx(CPUID_FEATURE_IDS);
393 PrintDebug("CPUID_FEATURE_IDS_ecx=0x%x\n",ret);
395 if ((ret & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
396 PrintDebug("SVM Not Available\n");
399 Get_MSR(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
401 PrintDebug("SVM_VM_CR_MSR = 0x%x 0x%x\n",vm_cr_high,vm_cr_low);
403 if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 1) {
404 PrintDebug("SVM is available but is disabled.\n");
406 ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
408 PrintDebug("CPUID_FEATURE_IDS_edx=0x%x\n",ret);
410 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
411 PrintDebug("SVM BIOS Disabled, not unlockable\n");
413 PrintDebug("SVM is locked with a key\n");
418 PrintDebug("SVM is available and enabled.\n");
420 ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
422 PrintDebug("CPUID_FEATURE_IDS_edx=0x%x\n",ret);
424 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 0) {
425 PrintDebug("SVM Nested Paging not supported\n");
427 PrintDebug("SVM Nested Paging supported\n");
437 uint_t ret = cpuid_ecx(CPUID_FEATURE_IDS);
438 uint_t vm_cr_low = 0, vm_cr_high = 0;
441 if ((ret & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
442 PrintDebug("SVM Not Available\n");
446 Get_MSR(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
448 PrintDebug("SVM_VM_CR_MSR = 0x%x 0x%x\n",vm_cr_high,vm_cr_low);
451 // this part is clearly wrong, since the np bit is in
453 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 1) {
454 PrintDebug("Nested Paging not supported\n");
456 PrintDebug("Nested Paging supported\n");
459 if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 0) {
460 PrintDebug("SVM is disabled.\n");
464 ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
466 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
467 PrintDebug("SVM BIOS Disabled, not unlockable\n");
469 PrintDebug("SVM is locked with a key\n");
478 int has_svm_nested_paging() {
481 ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
483 //PrintDebug("CPUID_FEATURE_IDS_edx=0x%x\n",ret);
485 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 0) {
486 PrintDebug("SVM Nested Paging not supported\n");
489 PrintDebug("SVM Nested Paging supported\n");
497 void Init_SVM(struct vmm_ctrl_ops * vmm_ops) {
502 // Enable SVM on the CPU
503 Get_MSR(EFER_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
504 msr.e_reg.low |= EFER_MSR_svm_enable;
505 Set_MSR(EFER_MSR, 0, msr.e_reg.low);
507 PrintDebug("SVM Enabled\n");
510 // Setup the host state save area
511 host_state = V3_AllocPages(4);
514 msr.e_reg.low = (uint_t)host_state;
517 PrintDebug("Host State being saved at %x\n", (uint_t)host_state);
518 Set_MSR(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low);
522 // Setup the SVM specific vmm operations
523 vmm_ops->init_guest = &init_svm_guest;
524 vmm_ops->start_guest = &start_svm_guest;
525 vmm_ops->has_nested_paging = &has_svm_nested_paging;
581 /*static void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
582 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
583 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
587 guest_state->rsp = vm_info.vm_regs.rsp;
588 guest_state->rip = vm_info.rip;
591 //ctrl_area->instrs.instrs.CR0 = 1;
592 ctrl_area->cr_reads.cr0 = 1;
593 ctrl_area->cr_writes.cr0 = 1;
595 guest_state->efer |= EFER_MSR_svm_enable;
596 guest_state->rflags = 0x00000002; // The reserved bit is always 1
597 ctrl_area->svm_instrs.VMRUN = 1;
598 // guest_state->cr0 = 0x00000001; // PE
599 ctrl_area->guest_ASID = 1;
602 ctrl_area->exceptions.de = 1;
603 ctrl_area->exceptions.df = 1;
604 ctrl_area->exceptions.pf = 1;
605 ctrl_area->exceptions.ts = 1;
606 ctrl_area->exceptions.ss = 1;
607 ctrl_area->exceptions.ac = 1;
608 ctrl_area->exceptions.mc = 1;
609 ctrl_area->exceptions.gp = 1;
610 ctrl_area->exceptions.ud = 1;
611 ctrl_area->exceptions.np = 1;
612 ctrl_area->exceptions.of = 1;
613 ctrl_area->exceptions.nmi = 1;
615 guest_state->cs.selector = 0x0000;
616 guest_state->cs.limit=~0u;
617 guest_state->cs.base = guest_state->cs.selector<<4;
618 guest_state->cs.attrib.raw = 0xf3;
621 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
622 for ( i = 0; segregs[i] != NULL; i++) {
623 struct vmcb_selector * seg = segregs[i];
625 seg->selector = 0x0000;
626 seg->base = seg->selector << 4;
627 seg->attrib.raw = 0xf3;
631 if (vm_info.io_map.num_ports > 0) {
632 struct vmm_io_hook * iter;
633 addr_t io_port_bitmap;
635 io_port_bitmap = (addr_t)V3_AllocPages(3);
636 memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
638 ctrl_area->IOPM_BASE_PA = io_port_bitmap;
640 //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
642 FOREACH_IO_HOOK(vm_info.io_map, iter) {
643 ushort_t port = iter->port;
644 uchar_t * bitmap = (uchar_t *)io_port_bitmap;
646 bitmap += (port / 8);
647 PrintDebug("Setting Bit in block %x\n", bitmap);
648 *bitmap |= 1 << (port % 8);
652 //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
654 ctrl_area->instrs.IOIO_PROT = 1;
657 ctrl_area->instrs.INTR = 1;
661 if (vm_info.page_mode == SHADOW_PAGING) {
662 PrintDebug("Creating initial shadow page table\n");
663 vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
664 PrintDebug("Created\n");
666 guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3;
668 ctrl_area->cr_reads.cr3 = 1;
669 ctrl_area->cr_writes.cr3 = 1;
672 ctrl_area->instrs.INVLPG = 1;
673 ctrl_area->instrs.INVLPGA = 1;
675 guest_state->g_pat = 0x7040600070406ULL;
677 guest_state->cr0 |= 0x80000000;
678 } else if (vm_info.page_mode == NESTED_PAGING) {
679 // Flush the TLB on entries/exits
680 //ctrl_area->TLB_CONTROL = 1;
682 // Enable Nested Paging
683 //ctrl_area->NP_ENABLE = 1;
685 //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
687 // Set the Nested Page Table pointer
688 // ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
689 // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
691 // ctrl_area->N_CR3 = Get_CR3();
692 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
694 // guest_state->g_pat = 0x7040600070406ULL;
709 void Init_VMCB_pe(vmcb_t *vmcb, struct guest_info vm_info) {
710 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
711 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
715 guest_state->rsp = vm_info.vm_regs.rsp;
716 guest_state->rip = vm_info.rip;
719 /* I pretty much just gutted this from TVMM */
720 /* Note: That means its probably wrong */
722 // set the segment registers to mirror ours
723 guest_state->cs.selector = 1<<3;
724 guest_state->cs.attrib.fields.type = 0xa; // Code segment+read
725 guest_state->cs.attrib.fields.S = 1;
726 guest_state->cs.attrib.fields.P = 1;
727 guest_state->cs.attrib.fields.db = 1;
728 guest_state->cs.attrib.fields.G = 1;
729 guest_state->cs.limit = 0xfffff;
730 guest_state->cs.base = 0;
732 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
733 for ( i = 0; segregs[i] != NULL; i++) {
734 struct vmcb_selector * seg = segregs[i];
736 seg->selector = 2<<3;
737 seg->attrib.fields.type = 0x2; // Data Segment+read/write
738 seg->attrib.fields.S = 1;
739 seg->attrib.fields.P = 1;
740 seg->attrib.fields.db = 1;
741 seg->attrib.fields.G = 1;
742 seg->limit = 0xfffff;
748 /* JRL THIS HAS TO GO */
750 // guest_state->tr.selector = GetTR_Selector();
751 guest_state->tr.attrib.fields.type = 0x9;
752 guest_state->tr.attrib.fields.P = 1;
753 // guest_state->tr.limit = GetTR_Limit();
754 //guest_state->tr.base = GetTR_Base();// - 0x2000;
762 guest_state->efer |= EFER_MSR_svm_enable;
763 guest_state->rflags = 0x00000002; // The reserved bit is always 1
764 ctrl_area->svm_instrs.VMRUN = 1;
765 guest_state->cr0 = 0x00000001; // PE
766 ctrl_area->guest_ASID = 1;
769 // guest_state->cpl = 0;
775 ctrl_area->cr_writes.cr4 = 1;
777 ctrl_area->exceptions.de = 1;
778 ctrl_area->exceptions.df = 1;
779 ctrl_area->exceptions.pf = 1;
780 ctrl_area->exceptions.ts = 1;
781 ctrl_area->exceptions.ss = 1;
782 ctrl_area->exceptions.ac = 1;
783 ctrl_area->exceptions.mc = 1;
784 ctrl_area->exceptions.gp = 1;
785 ctrl_area->exceptions.ud = 1;
786 ctrl_area->exceptions.np = 1;
787 ctrl_area->exceptions.of = 1;
788 ctrl_area->exceptions.nmi = 1;
792 ctrl_area->instrs.IOIO_PROT = 1;
793 ctrl_area->IOPM_BASE_PA = (uint_t)V3_AllocPages(3);
797 tmp_reg.r_reg = ctrl_area->IOPM_BASE_PA;
798 memset((void*)(tmp_reg.e_reg.low), 0xffffffff, PAGE_SIZE * 2);
801 ctrl_area->instrs.INTR = 1;
808 memset(gdt_buf, 0, 6);
809 memset(idt_buf, 0, 6);
812 uint_t gdt_base, idt_base;
813 ushort_t gdt_limit, idt_limit;
816 gdt_base = *(ulong_t*)((uchar_t*)gdt_buf + 2) & 0xffffffff;
817 gdt_limit = *(ushort_t*)(gdt_buf) & 0xffff;
818 PrintDebug("GDT: base: %x, limit: %x\n", gdt_base, gdt_limit);
821 idt_base = *(ulong_t*)(idt_buf + 2) & 0xffffffff;
822 idt_limit = *(ushort_t*)(idt_buf) & 0xffff;
823 PrintDebug("IDT: base: %x, limit: %x\n",idt_base, idt_limit);
826 // gdt_base -= 0x2000;
827 //idt_base -= 0x2000;
829 guest_state->gdtr.base = gdt_base;
830 guest_state->gdtr.limit = gdt_limit;
831 guest_state->idtr.base = idt_base;
832 guest_state->idtr.limit = idt_limit;
838 // also determine if CPU supports nested paging
840 if (vm_info.page_tables) {
842 // Flush the TLB on entries/exits
843 ctrl_area->TLB_CONTROL = 1;
845 // Enable Nested Paging
846 ctrl_area->NP_ENABLE = 1;
848 PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
850 // Set the Nested Page Table pointer
851 ctrl_area->N_CR3 |= ((addr_t)vm_info.page_tables & 0xfffff000);
854 // ctrl_area->N_CR3 = Get_CR3();
855 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
857 guest_state->g_pat = 0x7040600070406ULL;
859 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));
860 PrintDebug("Set Guest CR3: lo: 0x%x hi: 0x%x\n", (uint_t)*(&(guest_state->cr3)), (uint_t)*((unsigned char *)&(guest_state->cr3) + 4));
862 // guest_state->cr0 |= 0x80000000;