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".
21 #include <palacios/svm.h>
22 #include <palacios/vmm.h>
24 #include <palacios/vmcb.h>
25 #include <palacios/vmm_mem.h>
26 #include <palacios/vmm_paging.h>
27 #include <palacios/svm_handler.h>
29 #include <palacios/vmm_debug.h>
30 #include <palacios/vm_guest_mem.h>
32 #include <palacios/vmm_decoder.h>
33 #include <palacios/vmm_string.h>
34 #include <palacios/vmm_lowlevel.h>
35 #include <palacios/svm_msr.h>
37 #include <palacios/vmm_rbtree.h>
39 #include <palacios/vmm_profiler.h>
41 #include <palacios/vmm_direct_paging.h>
43 #include <palacios/vmm_ctrl_regs.h>
44 #include <palacios/vmm_config.h>
45 #include <palacios/svm_io.h>
49 // This is a global pointer to the host's VMCB
50 static void * host_vmcb = NULL;
52 extern void v3_stgi();
53 extern void v3_clgi();
54 //extern int v3_svm_launch(vmcb_t * vmcb, struct v3_gprs * vm_regs, uint64_t * fs, uint64_t * gs);
55 extern int v3_svm_launch(vmcb_t * vmcb, struct v3_gprs * vm_regs, vmcb_t * host_vmcb);
58 static vmcb_t * Allocate_VMCB() {
59 vmcb_t * vmcb_page = (vmcb_t *)V3_VAddr(V3_AllocPages(1));
61 memset(vmcb_page, 0, 4096);
68 static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
69 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
70 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
75 guest_state->rsp = 0x00;
76 guest_state->rip = 0xfff0;
81 guest_state->efer |= EFER_MSR_svm_enable;
84 guest_state->rflags = 0x00000002; // The reserved bit is always 1
85 ctrl_area->svm_instrs.VMRUN = 1;
86 ctrl_area->svm_instrs.VMMCALL = 1;
87 ctrl_area->svm_instrs.VMLOAD = 1;
88 ctrl_area->svm_instrs.VMSAVE = 1;
89 ctrl_area->svm_instrs.STGI = 1;
90 ctrl_area->svm_instrs.CLGI = 1;
91 ctrl_area->svm_instrs.SKINIT = 1;
92 ctrl_area->svm_instrs.RDTSCP = 1;
93 ctrl_area->svm_instrs.ICEBP = 1;
94 ctrl_area->svm_instrs.WBINVD = 1;
95 ctrl_area->svm_instrs.MONITOR = 1;
96 ctrl_area->svm_instrs.MWAIT_always = 1;
97 ctrl_area->svm_instrs.MWAIT_if_armed = 1;
98 ctrl_area->instrs.INVLPGA = 1;
101 ctrl_area->instrs.HLT = 1;
102 // guest_state->cr0 = 0x00000001; // PE
105 ctrl_area->exceptions.de = 1;
106 ctrl_area->exceptions.df = 1;
108 ctrl_area->exceptions.ts = 1;
109 ctrl_area->exceptions.ss = 1;
110 ctrl_area->exceptions.ac = 1;
111 ctrl_area->exceptions.mc = 1;
112 ctrl_area->exceptions.gp = 1;
113 ctrl_area->exceptions.ud = 1;
114 ctrl_area->exceptions.np = 1;
115 ctrl_area->exceptions.of = 1;
117 ctrl_area->exceptions.nmi = 1;
121 ctrl_area->instrs.NMI = 1;
122 ctrl_area->instrs.SMI = 1;
123 ctrl_area->instrs.INIT = 1;
124 ctrl_area->instrs.PAUSE = 1;
125 ctrl_area->instrs.shutdown_evts = 1;
127 vm_info->vm_regs.rdx = 0x00000f00;
129 guest_state->cr0 = 0x60000010;
132 guest_state->cs.selector = 0xf000;
133 guest_state->cs.limit = 0xffff;
134 guest_state->cs.base = 0x0000000f0000LL;
135 guest_state->cs.attrib.raw = 0xf3;
138 /* DEBUG FOR RETURN CODE */
139 ctrl_area->exit_code = 1;
142 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds),
143 &(guest_state->es), &(guest_state->fs),
144 &(guest_state->gs), NULL};
146 for ( i = 0; segregs[i] != NULL; i++) {
147 struct vmcb_selector * seg = segregs[i];
149 seg->selector = 0x0000;
150 // seg->base = seg->selector << 4;
151 seg->base = 0x00000000;
152 seg->attrib.raw = 0xf3;
156 guest_state->gdtr.limit = 0x0000ffff;
157 guest_state->gdtr.base = 0x0000000000000000LL;
158 guest_state->idtr.limit = 0x0000ffff;
159 guest_state->idtr.base = 0x0000000000000000LL;
161 guest_state->ldtr.selector = 0x0000;
162 guest_state->ldtr.limit = 0x0000ffff;
163 guest_state->ldtr.base = 0x0000000000000000LL;
164 guest_state->tr.selector = 0x0000;
165 guest_state->tr.limit = 0x0000ffff;
166 guest_state->tr.base = 0x0000000000000000LL;
169 guest_state->dr6 = 0x00000000ffff0ff0LL;
170 guest_state->dr7 = 0x0000000000000400LL;
173 v3_init_svm_io_map(vm_info);
174 ctrl_area->IOPM_BASE_PA = (addr_t)V3_PAddr(vm_info->io_map.arch_data);
175 ctrl_area->instrs.IOIO_PROT = 1;
179 v3_init_svm_msr_map(vm_info);
180 ctrl_area->MSRPM_BASE_PA = (addr_t)V3_PAddr(vm_info->msr_map.arch_data);
181 ctrl_area->instrs.MSR_PROT = 1;
185 PrintDebug("Exiting on interrupts\n");
186 ctrl_area->guest_ctrl.V_INTR_MASKING = 1;
187 ctrl_area->instrs.INTR = 1;
190 if (vm_info->shdw_pg_mode == SHADOW_PAGING) {
191 PrintDebug("Creating initial shadow page table\n");
193 /* JRL: This is a performance killer, and a simplistic solution */
194 /* We need to fix this */
195 ctrl_area->TLB_CONTROL = 1;
196 ctrl_area->guest_ASID = 1;
199 if (v3_init_passthrough_pts(vm_info) == -1) {
200 PrintError("Could not initialize passthrough page tables\n");
205 vm_info->shdw_pg_state.guest_cr0 = 0x0000000000000010LL;
206 PrintDebug("Created\n");
208 guest_state->cr3 = vm_info->direct_map_pt;
210 ctrl_area->cr_reads.cr0 = 1;
211 ctrl_area->cr_writes.cr0 = 1;
212 //ctrl_area->cr_reads.cr4 = 1;
213 ctrl_area->cr_writes.cr4 = 1;
214 ctrl_area->cr_reads.cr3 = 1;
215 ctrl_area->cr_writes.cr3 = 1;
217 v3_hook_msr(vm_info, EFER_MSR,
218 &v3_handle_efer_read,
219 &v3_handle_efer_write,
222 ctrl_area->instrs.INVLPG = 1;
224 ctrl_area->exceptions.pf = 1;
226 guest_state->g_pat = 0x7040600070406ULL;
228 guest_state->cr0 |= 0x80000000;
230 } else if (vm_info->shdw_pg_mode == NESTED_PAGING) {
231 // Flush the TLB on entries/exits
232 ctrl_area->TLB_CONTROL = 1;
233 ctrl_area->guest_ASID = 1;
235 // Enable Nested Paging
236 ctrl_area->NP_ENABLE = 1;
238 PrintDebug("NP_Enable at 0x%p\n", (void *)&(ctrl_area->NP_ENABLE));
240 // Set the Nested Page Table pointer
241 if (v3_init_passthrough_pts(vm_info) == -1) {
242 PrintError("Could not initialize Nested page tables\n");
246 ctrl_area->N_CR3 = vm_info->direct_map_pt;
248 guest_state->g_pat = 0x7040600070406ULL;
253 static int init_svm_guest(struct guest_info * info, struct v3_vm_config * config_ptr) {
256 v3_pre_config_guest(info, config_ptr);
258 PrintDebug("Allocating VMCB\n");
259 info->vmm_data = (void*)Allocate_VMCB();
261 PrintDebug("Initializing VMCB (addr=%p)\n", (void *)info->vmm_data);
262 Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), info);
264 v3_post_config_guest(info, config_ptr);
271 // can we start a kernel thread here...
272 static int start_svm_guest(struct guest_info *info) {
273 // vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
274 // vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
275 uint_t num_exits = 0;
279 PrintDebug("Launching SVM VM (vmcb=%p)\n", (void *)info->vmm_data);
280 //PrintDebugVMCB((vmcb_t*)(info->vmm_data));
282 info->run_state = VM_RUNNING;
289 PrintDebug("SVM Entry to CS=%p rip=%p...\n",
290 (void *)(addr_t)info->segments.cs.base,
291 (void *)(addr_t)info->rip);
294 // disable global interrupts for vm state transition
299 rdtscll(info->time_state.cached_host_tsc);
300 // guest_ctrl->TSC_OFFSET = info->time_state.guest_tsc - info->time_state.cached_host_tsc;
302 v3_svm_launch((vmcb_t*)V3_PAddr(info->vmm_data), &(info->vm_regs), (vmcb_t *)host_vmcb);
307 //PrintDebug("SVM Returned\n");
309 // reenable global interrupts after vm exit
312 v3_update_time(info, tmp_tsc - info->time_state.cached_host_tsc);
315 if ((num_exits % 5000) == 0) {
316 PrintDebug("SVM Exit number %d\n", num_exits);
318 if (info->enable_profiler) {
319 v3_print_profile(info);
324 if (v3_handle_svm_exit(info) != 0) {
325 vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
327 addr_t linear_addr = 0;
329 info->run_state = VM_ERROR;
331 PrintDebug("SVM ERROR!!\n");
333 v3_print_guest_state(info);
335 PrintDebug("SVM Exit Code: %p\n", (void *)(addr_t)guest_ctrl->exit_code);
337 PrintDebug("exit_info1 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info1));
338 PrintDebug("exit_info1 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
340 PrintDebug("exit_info2 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info2));
341 PrintDebug("exit_info2 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4));
343 if (info->mem_mode == PHYSICAL_MEM) {
344 guest_pa_to_host_va(info, linear_addr, &host_addr);
345 } else if (info->mem_mode == VIRTUAL_MEM) {
346 guest_va_to_host_va(info, linear_addr, &host_addr);
350 PrintDebug("Host Address of rip = 0x%p\n", (void *)host_addr);
352 PrintDebug("Instr (15 bytes) at %p:\n", (void *)host_addr);
353 PrintTraceMemDump((uchar_t *)host_addr, 15);
365 /* Checks machine SVM capability */
366 /* Implemented from: AMD Arch Manual 3, sect 15.4 */
367 int v3_is_svm_capable() {
369 uint_t vm_cr_low = 0, vm_cr_high = 0;
370 addr_t eax = 0, ebx = 0, ecx = 0, edx = 0;
372 v3_cpuid(CPUID_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
374 PrintDebug("CPUID_FEATURE_IDS_ecx=%p\n", (void *)ecx);
376 if ((ecx & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
377 PrintDebug("SVM Not Available\n");
380 v3_get_msr(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
382 PrintDebug("SVM_VM_CR_MSR = 0x%x 0x%x\n", vm_cr_high, vm_cr_low);
384 if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 1) {
385 PrintDebug("SVM is available but is disabled.\n");
387 v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
389 PrintDebug("CPUID_FEATURE_IDS_edx=%p\n", (void *)edx);
391 if ((edx & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
392 PrintDebug("SVM BIOS Disabled, not unlockable\n");
394 PrintDebug("SVM is locked with a key\n");
399 PrintDebug("SVM is available and enabled.\n");
401 v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
402 PrintDebug("CPUID_FEATURE_IDS_eax=%p\n", (void *)eax);
403 PrintDebug("CPUID_FEATURE_IDS_ebx=%p\n", (void *)ebx);
404 PrintDebug("CPUID_FEATURE_IDS_ecx=%p\n", (void *)ecx);
405 PrintDebug("CPUID_FEATURE_IDS_edx=%p\n", (void *)edx);
408 if ((edx & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 0) {
409 PrintDebug("SVM Nested Paging not supported\n");
411 PrintDebug("SVM Nested Paging supported\n");
419 static int has_svm_nested_paging() {
420 addr_t eax = 0, ebx = 0, ecx = 0, edx = 0;
422 v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
424 //PrintDebug("CPUID_FEATURE_IDS_edx=0x%x\n", edx);
426 if ((edx & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 0) {
427 PrintDebug("SVM Nested Paging not supported\n");
430 PrintDebug("SVM Nested Paging supported\n");
437 void v3_init_SVM(struct v3_ctrl_ops * vmm_ops) {
439 extern v3_cpu_arch_t v3_cpu_type;
441 // Enable SVM on the CPU
442 v3_get_msr(EFER_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
443 msr.e_reg.low |= EFER_MSR_svm_enable;
444 v3_set_msr(EFER_MSR, 0, msr.e_reg.low);
446 PrintDebug("SVM Enabled\n");
449 // Setup the host state save area
450 host_vmcb = V3_AllocPages(4);
454 // msr.e_reg.high = 0;
455 //msr.e_reg.low = (uint_t)host_vmcb;
456 msr.r_reg = (addr_t)host_vmcb;
458 PrintDebug("Host State being saved at %p\n", (void *)(addr_t)host_vmcb);
459 v3_set_msr(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low);
461 if (has_svm_nested_paging() == 1) {
462 v3_cpu_type = V3_SVM_REV3_CPU;
464 v3_cpu_type = V3_SVM_CPU;
467 // Setup the SVM specific vmm operations
468 vmm_ops->init_guest = &init_svm_guest;
469 vmm_ops->start_guest = &start_svm_guest;
470 vmm_ops->has_nested_paging = &has_svm_nested_paging;
526 /*static void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
527 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
528 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
532 guest_state->rsp = vm_info.vm_regs.rsp;
533 guest_state->rip = vm_info.rip;
536 //ctrl_area->instrs.instrs.CR0 = 1;
537 ctrl_area->cr_reads.cr0 = 1;
538 ctrl_area->cr_writes.cr0 = 1;
540 guest_state->efer |= EFER_MSR_svm_enable;
541 guest_state->rflags = 0x00000002; // The reserved bit is always 1
542 ctrl_area->svm_instrs.VMRUN = 1;
543 // guest_state->cr0 = 0x00000001; // PE
544 ctrl_area->guest_ASID = 1;
547 ctrl_area->exceptions.de = 1;
548 ctrl_area->exceptions.df = 1;
549 ctrl_area->exceptions.pf = 1;
550 ctrl_area->exceptions.ts = 1;
551 ctrl_area->exceptions.ss = 1;
552 ctrl_area->exceptions.ac = 1;
553 ctrl_area->exceptions.mc = 1;
554 ctrl_area->exceptions.gp = 1;
555 ctrl_area->exceptions.ud = 1;
556 ctrl_area->exceptions.np = 1;
557 ctrl_area->exceptions.of = 1;
558 ctrl_area->exceptions.nmi = 1;
560 guest_state->cs.selector = 0x0000;
561 guest_state->cs.limit=~0u;
562 guest_state->cs.base = guest_state->cs.selector<<4;
563 guest_state->cs.attrib.raw = 0xf3;
566 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
567 for ( i = 0; segregs[i] != NULL; i++) {
568 struct vmcb_selector * seg = segregs[i];
570 seg->selector = 0x0000;
571 seg->base = seg->selector << 4;
572 seg->attrib.raw = 0xf3;
576 if (vm_info.io_map.num_ports > 0) {
577 struct vmm_io_hook * iter;
578 addr_t io_port_bitmap;
580 io_port_bitmap = (addr_t)V3_AllocPages(3);
581 memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
583 ctrl_area->IOPM_BASE_PA = io_port_bitmap;
585 //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
587 FOREACH_IO_HOOK(vm_info.io_map, iter) {
588 ushort_t port = iter->port;
589 uchar_t * bitmap = (uchar_t *)io_port_bitmap;
591 bitmap += (port / 8);
592 PrintDebug("Setting Bit in block %x\n", bitmap);
593 *bitmap |= 1 << (port % 8);
597 //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
599 ctrl_area->instrs.IOIO_PROT = 1;
602 ctrl_area->instrs.INTR = 1;
606 if (vm_info.page_mode == SHADOW_PAGING) {
607 PrintDebug("Creating initial shadow page table\n");
608 vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pts_32(&vm_info) & ~0xfff);
609 PrintDebug("Created\n");
611 guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3;
613 ctrl_area->cr_reads.cr3 = 1;
614 ctrl_area->cr_writes.cr3 = 1;
617 ctrl_area->instrs.INVLPG = 1;
618 ctrl_area->instrs.INVLPGA = 1;
620 guest_state->g_pat = 0x7040600070406ULL;
622 guest_state->cr0 |= 0x80000000;
623 } else if (vm_info.page_mode == NESTED_PAGING) {
624 // Flush the TLB on entries/exits
625 //ctrl_area->TLB_CONTROL = 1;
627 // Enable Nested Paging
628 //ctrl_area->NP_ENABLE = 1;
630 //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
632 // Set the Nested Page Table pointer
633 // ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
634 // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
636 // ctrl_area->N_CR3 = Get_CR3();
637 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
639 // guest_state->g_pat = 0x7040600070406ULL;
654 void Init_VMCB_pe(vmcb_t *vmcb, struct guest_info vm_info) {
655 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
656 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
660 guest_state->rsp = vm_info.vm_regs.rsp;
661 guest_state->rip = vm_info.rip;
664 /* I pretty much just gutted this from TVMM */
665 /* Note: That means its probably wrong */
667 // set the segment registers to mirror ours
668 guest_state->cs.selector = 1<<3;
669 guest_state->cs.attrib.fields.type = 0xa; // Code segment+read
670 guest_state->cs.attrib.fields.S = 1;
671 guest_state->cs.attrib.fields.P = 1;
672 guest_state->cs.attrib.fields.db = 1;
673 guest_state->cs.attrib.fields.G = 1;
674 guest_state->cs.limit = 0xfffff;
675 guest_state->cs.base = 0;
677 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
678 for ( i = 0; segregs[i] != NULL; i++) {
679 struct vmcb_selector * seg = segregs[i];
681 seg->selector = 2<<3;
682 seg->attrib.fields.type = 0x2; // Data Segment+read/write
683 seg->attrib.fields.S = 1;
684 seg->attrib.fields.P = 1;
685 seg->attrib.fields.db = 1;
686 seg->attrib.fields.G = 1;
687 seg->limit = 0xfffff;
693 /* JRL THIS HAS TO GO */
695 // guest_state->tr.selector = GetTR_Selector();
696 guest_state->tr.attrib.fields.type = 0x9;
697 guest_state->tr.attrib.fields.P = 1;
698 // guest_state->tr.limit = GetTR_Limit();
699 //guest_state->tr.base = GetTR_Base();// - 0x2000;
707 guest_state->efer |= EFER_MSR_svm_enable;
708 guest_state->rflags = 0x00000002; // The reserved bit is always 1
709 ctrl_area->svm_instrs.VMRUN = 1;
710 guest_state->cr0 = 0x00000001; // PE
711 ctrl_area->guest_ASID = 1;
714 // guest_state->cpl = 0;
720 ctrl_area->cr_writes.cr4 = 1;
722 ctrl_area->exceptions.de = 1;
723 ctrl_area->exceptions.df = 1;
724 ctrl_area->exceptions.pf = 1;
725 ctrl_area->exceptions.ts = 1;
726 ctrl_area->exceptions.ss = 1;
727 ctrl_area->exceptions.ac = 1;
728 ctrl_area->exceptions.mc = 1;
729 ctrl_area->exceptions.gp = 1;
730 ctrl_area->exceptions.ud = 1;
731 ctrl_area->exceptions.np = 1;
732 ctrl_area->exceptions.of = 1;
733 ctrl_area->exceptions.nmi = 1;
737 ctrl_area->instrs.IOIO_PROT = 1;
738 ctrl_area->IOPM_BASE_PA = (uint_t)V3_AllocPages(3);
742 tmp_reg.r_reg = ctrl_area->IOPM_BASE_PA;
743 memset((void*)(tmp_reg.e_reg.low), 0xffffffff, PAGE_SIZE * 2);
746 ctrl_area->instrs.INTR = 1;
753 memset(gdt_buf, 0, 6);
754 memset(idt_buf, 0, 6);
757 uint_t gdt_base, idt_base;
758 ushort_t gdt_limit, idt_limit;
761 gdt_base = *(ulong_t*)((uchar_t*)gdt_buf + 2) & 0xffffffff;
762 gdt_limit = *(ushort_t*)(gdt_buf) & 0xffff;
763 PrintDebug("GDT: base: %x, limit: %x\n", gdt_base, gdt_limit);
766 idt_base = *(ulong_t*)(idt_buf + 2) & 0xffffffff;
767 idt_limit = *(ushort_t*)(idt_buf) & 0xffff;
768 PrintDebug("IDT: base: %x, limit: %x\n",idt_base, idt_limit);
771 // gdt_base -= 0x2000;
772 //idt_base -= 0x2000;
774 guest_state->gdtr.base = gdt_base;
775 guest_state->gdtr.limit = gdt_limit;
776 guest_state->idtr.base = idt_base;
777 guest_state->idtr.limit = idt_limit;
783 // also determine if CPU supports nested paging
785 if (vm_info.page_tables) {
787 // Flush the TLB on entries/exits
788 ctrl_area->TLB_CONTROL = 1;
790 // Enable Nested Paging
791 ctrl_area->NP_ENABLE = 1;
793 PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
795 // Set the Nested Page Table pointer
796 ctrl_area->N_CR3 |= ((addr_t)vm_info.page_tables & 0xfffff000);
799 // ctrl_area->N_CR3 = Get_CR3();
800 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
802 guest_state->g_pat = 0x7040600070406ULL;
804 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));
805 PrintDebug("Set Guest CR3: lo: 0x%x hi: 0x%x\n", (uint_t)*(&(guest_state->cr3)), (uint_t)*((unsigned char *)&(guest_state->cr3) + 4));
807 // guest_state->cr0 |= 0x80000000;