1 /* Northwestern University */
2 /* (c) 2008, Jack Lange <jarusl@cs.northwestern.edu> */
5 #include <palacios/svm.h>
6 #include <palacios/vmm.h>
8 #include <palacios/vmcb.h>
9 #include <palacios/vmm_mem.h>
10 #include <palacios/vmm_paging.h>
11 #include <palacios/svm_handler.h>
13 #include <palacios/vmm_debug.h>
14 #include <palacios/vm_guest_mem.h>
16 #include <palacios/vmm_decoder.h>
21 extern uint_t cpuid_ecx(uint_t op);
22 extern uint_t cpuid_edx(uint_t op);
23 extern void Get_MSR(uint_t MSR, uint_t * high_byte, uint_t * low_byte);
24 extern void Set_MSR(uint_t MSR, uint_t high_byte, uint_t low_byte);
25 extern uint_t launch_svm(vmcb_t * vmcb_addr);
26 extern void safe_svm_launch(vmcb_t * vmcb_addr, struct v3_gprs * gprs);
31 extern uint_t Get_CR3();
34 extern void DisableInts();
35 extern void EnableInts();
43 static vmcb_t * Allocate_VMCB() {
44 vmcb_t * vmcb_page = (vmcb_t *)V3_AllocPages(1);
47 memset(vmcb_page, 0, 4096);
56 static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
57 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
58 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
62 guest_state->rsp = vm_info->vm_regs.rsp;
63 // guest_state->rip = vm_info->rip;
64 guest_state->rip = 0xfff0;
68 //ctrl_area->instrs.instrs.CR0 = 1;
69 ctrl_area->cr_reads.cr0 = 1;
70 ctrl_area->cr_writes.cr0 = 1;
72 guest_state->efer |= EFER_MSR_svm_enable;
73 guest_state->rflags = 0x00000002; // The reserved bit is always 1
74 ctrl_area->svm_instrs.VMRUN = 1;
75 ctrl_area->svm_instrs.VMMCALL = 1;
76 ctrl_area->svm_instrs.VMLOAD = 1;
77 ctrl_area->svm_instrs.VMSAVE = 1;
78 ctrl_area->svm_instrs.STGI = 1;
79 ctrl_area->svm_instrs.CLGI = 1;
80 ctrl_area->svm_instrs.SKINIT = 1;
81 ctrl_area->svm_instrs.RDTSCP = 1;
82 ctrl_area->svm_instrs.ICEBP = 1;
83 ctrl_area->svm_instrs.WBINVD = 1;
84 ctrl_area->svm_instrs.MONITOR = 1;
85 ctrl_area->svm_instrs.MWAIT_always = 1;
86 ctrl_area->svm_instrs.MWAIT_if_armed = 1;
89 ctrl_area->instrs.HLT = 1;
90 // guest_state->cr0 = 0x00000001; // PE
91 ctrl_area->guest_ASID = 1;
95 ctrl_area->exceptions.de = 1;
96 ctrl_area->exceptions.df = 1;
98 ctrl_area->exceptions.ts = 1;
99 ctrl_area->exceptions.ss = 1;
100 ctrl_area->exceptions.ac = 1;
101 ctrl_area->exceptions.mc = 1;
102 ctrl_area->exceptions.gp = 1;
103 ctrl_area->exceptions.ud = 1;
104 ctrl_area->exceptions.np = 1;
105 ctrl_area->exceptions.of = 1;
107 ctrl_area->exceptions.nmi = 1;
109 // Debug of boot on physical machines - 7/14/08
110 ctrl_area->instrs.NMI=1;
111 ctrl_area->instrs.SMI=1;
112 ctrl_area->instrs.INIT=1;
113 ctrl_area->instrs.PAUSE=1;
114 ctrl_area->instrs.shutdown_evts=1;
118 vm_info->vm_regs.rdx = 0x00000f00;
120 guest_state->cr0 = 0x60000010;
122 guest_state->cs.selector = 0xf000;
123 guest_state->cs.limit=0xffff;
124 guest_state->cs.base = 0x0000000f0000LL;
125 guest_state->cs.attrib.raw = 0xf3;
128 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
129 for ( i = 0; segregs[i] != NULL; i++) {
130 struct vmcb_selector * seg = segregs[i];
132 seg->selector = 0x0000;
133 // seg->base = seg->selector << 4;
134 seg->base = 0x00000000;
135 seg->attrib.raw = 0xf3;
139 guest_state->gdtr.limit = 0x0000ffff;
140 guest_state->gdtr.base = 0x0000000000000000LL;
141 guest_state->idtr.limit = 0x0000ffff;
142 guest_state->idtr.base = 0x0000000000000000LL;
144 guest_state->ldtr.selector = 0x0000;
145 guest_state->ldtr.limit = 0x0000ffff;
146 guest_state->ldtr.base = 0x0000000000000000LL;
147 guest_state->tr.selector = 0x0000;
148 guest_state->tr.limit = 0x0000ffff;
149 guest_state->tr.base = 0x0000000000000000LL;
152 guest_state->dr6 = 0x00000000ffff0ff0LL;
153 guest_state->dr7 = 0x0000000000000400LL;
155 if (vm_info->io_map.num_ports > 0) {
156 struct vmm_io_hook * iter;
157 addr_t io_port_bitmap;
159 io_port_bitmap = (addr_t)V3_AllocPages(3);
160 memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
162 ctrl_area->IOPM_BASE_PA = io_port_bitmap;
164 //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
166 FOREACH_IO_HOOK(vm_info->io_map, iter) {
167 ushort_t port = iter->port;
168 uchar_t * bitmap = (uchar_t *)io_port_bitmap;
170 bitmap += (port / 8);
171 PrintDebug("Setting Bit for port 0x%x\n", port);
172 *bitmap |= 1 << (port % 8);
176 //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
178 ctrl_area->instrs.IOIO_PROT = 1;
183 PrintDebug("Exiting on interrupts\n");
184 ctrl_area->guest_ctrl.V_INTR_MASKING = 1;
185 ctrl_area->instrs.INTR = 1;
188 if (vm_info->shdw_pg_mode == SHADOW_PAGING) {
189 PrintDebug("Creating initial shadow page table\n");
190 vm_info->direct_map_pt = (addr_t)create_passthrough_pde32_pts(vm_info);
191 vm_info->shdw_pg_state.shadow_cr3 |= (vm_info->direct_map_pt & ~0xfff);
192 vm_info->shdw_pg_state.guest_cr0 = 0x0000000000000010LL;
193 PrintDebug("Created\n");
195 guest_state->cr3 = vm_info->shdw_pg_state.shadow_cr3;
197 //PrintDebugPageTables((pde32_t*)(vm_info->shdw_pg_state.shadow_cr3.e_reg.low));
199 ctrl_area->cr_reads.cr3 = 1;
200 ctrl_area->cr_writes.cr3 = 1;
203 ctrl_area->instrs.INVLPG = 1;
204 ctrl_area->instrs.INVLPGA = 1;
206 ctrl_area->exceptions.pf = 1;
208 /* JRL: This is a performance killer, and a simplistic solution */
209 /* We need to fix this */
210 ctrl_area->TLB_CONTROL = 1;
214 guest_state->g_pat = 0x7040600070406ULL;
216 guest_state->cr0 |= 0x80000000;
218 } else if (vm_info->shdw_pg_mode == NESTED_PAGING) {
219 // Flush the TLB on entries/exits
220 ctrl_area->TLB_CONTROL = 1;
222 // Enable Nested Paging
223 ctrl_area->NP_ENABLE = 1;
225 PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
227 // Set the Nested Page Table pointer
228 vm_info->direct_map_pt = ((addr_t)create_passthrough_pde32_pts(vm_info) & ~0xfff);
229 ctrl_area->N_CR3 = vm_info->direct_map_pt;
231 // ctrl_area->N_CR3 = Get_CR3();
232 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
234 guest_state->g_pat = 0x7040600070406ULL;
242 static int init_svm_guest(struct guest_info *info) {
244 PrintDebug("Allocating VMCB\n");
245 info->vmm_data = (void*)Allocate_VMCB();
248 //PrintDebug("Generating Guest nested page tables\n");
249 // info->page_tables = NULL;
250 //info->page_tables = generate_guest_page_tables_64(&(info->mem_layout), &(info->mem_list));
251 //info->page_tables = generate_guest_page_tables(&(info->mem_layout), &(info->mem_list));
252 // PrintDebugPageTables(info->page_tables);
255 PrintDebug("Initializing VMCB (addr=%x)\n", info->vmm_data);
256 Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), info);
259 info->run_state = VM_STOPPED;
263 info->vm_regs.rdi = 0;
264 info->vm_regs.rsi = 0;
265 info->vm_regs.rbp = 0;
266 info->vm_regs.rsp = 0;
267 info->vm_regs.rbx = 0;
268 info->vm_regs.rdx = 0;
269 info->vm_regs.rcx = 0;
270 info->vm_regs.rax = 0;
277 // can we start a kernel thread here...
278 int start_svm_guest(struct guest_info *info) {
279 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
280 vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
281 uint_t num_exits = 0;
285 PrintDebug("Launching SVM VM (vmcb=%x)\n", info->vmm_data);
286 //PrintDebugVMCB((vmcb_t*)(info->vmm_data));
288 info->run_state = VM_RUNNING;
297 // PrintDebug("SVM Entry to rip=%x...\n", info->rip);
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 safe_svm_launch((vmcb_t*)(info->vmm_data), &(info->vm_regs));
305 //PrintDebug("SVM Returned\n");
308 v3_update_time(info, tmp_tsc - info->time_state.cached_host_tsc);
313 if ((num_exits % 25) == 0) {
314 PrintDebug("SVM Exit number %d\n", num_exits);
318 if (handle_svm_exit(info) != 0) {
321 addr_t linear_addr = 0;
323 info->run_state = VM_ERROR;
325 PrintDebug("SVM ERROR!!\n");
327 PrintDebug("RIP: %x\n", guest_state->rip);
330 linear_addr = get_addr_linear(info, guest_state->rip, &(info->segments.cs));
333 PrintDebug("RIP Linear: %x\n", linear_addr);
334 PrintV3Segments(info);
335 PrintV3CtrlRegs(info);
338 if (info->mem_mode == PHYSICAL_MEM) {
339 guest_pa_to_host_pa(info, linear_addr, &host_addr);
340 } else if (info->mem_mode == VIRTUAL_MEM) {
341 guest_va_to_host_pa(info, linear_addr, &host_addr);
345 PrintDebug("Host Address of rip = 0x%x\n", host_addr);
347 PrintDebug("Instr (15 bytes) at %x:\n", host_addr);
348 PrintTraceMemDump((char*)host_addr, 15);
360 /* Checks machine SVM capability */
361 /* Implemented from: AMD Arch Manual 3, sect 15.4 */
362 int is_svm_capable() {
368 uint_t vm_cr_low = 0, vm_cr_high = 0;
371 ret = cpuid_ecx(CPUID_FEATURE_IDS);
373 PrintDebug("CPUID_FEATURE_IDS_ecx=0x%x\n",ret);
375 if ((ret & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
376 PrintDebug("SVM Not Available\n");
379 Get_MSR(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
381 PrintDebug("SVM_VM_CR_MSR = 0x%x 0x%x\n",vm_cr_high,vm_cr_low);
383 if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 1) {
384 PrintDebug("SVM is available but is disabled.\n");
386 ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
388 PrintDebug("CPUID_FEATURE_IDS_edx=0x%x\n",ret);
390 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
391 PrintDebug("SVM BIOS Disabled, not unlockable\n");
393 PrintDebug("SVM is locked with a key\n");
398 PrintDebug("SVM is available and enabled.\n");
400 ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
402 PrintDebug("CPUID_FEATURE_IDS_edx=0x%x\n",ret);
404 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 0) {
405 PrintDebug("SVM Nested Paging not supported\n");
407 PrintDebug("SVM Nested Paging supported\n");
417 uint_t ret = cpuid_ecx(CPUID_FEATURE_IDS);
418 uint_t vm_cr_low = 0, vm_cr_high = 0;
421 if ((ret & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
422 PrintDebug("SVM Not Available\n");
426 Get_MSR(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
428 PrintDebug("SVM_VM_CR_MSR = 0x%x 0x%x\n",vm_cr_high,vm_cr_low);
431 // this part is clearly wrong, since the np bit is in
433 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 1) {
434 PrintDebug("Nested Paging not supported\n");
436 PrintDebug("Nested Paging supported\n");
439 if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 0) {
440 PrintDebug("SVM is disabled.\n");
444 ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
446 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
447 PrintDebug("SVM BIOS Disabled, not unlockable\n");
449 PrintDebug("SVM is locked with a key\n");
458 int has_svm_nested_paging() {
461 ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
463 //PrintDebug("CPUID_FEATURE_IDS_edx=0x%x\n",ret);
465 if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 0) {
466 PrintDebug("SVM Nested Paging not supported\n");
469 PrintDebug("SVM Nested Paging supported\n");
477 void Init_SVM(struct vmm_ctrl_ops * vmm_ops) {
482 // Enable SVM on the CPU
483 Get_MSR(EFER_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
484 msr.e_reg.low |= EFER_MSR_svm_enable;
485 Set_MSR(EFER_MSR, 0, msr.e_reg.low);
487 PrintDebug("SVM Enabled\n");
490 // Setup the host state save area
491 host_state = V3_AllocPages(4);
494 msr.e_reg.low = (uint_t)host_state;
497 PrintDebug("Host State being saved at %x\n", (uint_t)host_state);
498 Set_MSR(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low);
502 // Setup the SVM specific vmm operations
503 vmm_ops->init_guest = &init_svm_guest;
504 vmm_ops->start_guest = &start_svm_guest;
505 vmm_ops->has_nested_paging = &has_svm_nested_paging;
561 /*static void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
562 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
563 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
567 guest_state->rsp = vm_info.vm_regs.rsp;
568 guest_state->rip = vm_info.rip;
571 //ctrl_area->instrs.instrs.CR0 = 1;
572 ctrl_area->cr_reads.cr0 = 1;
573 ctrl_area->cr_writes.cr0 = 1;
575 guest_state->efer |= EFER_MSR_svm_enable;
576 guest_state->rflags = 0x00000002; // The reserved bit is always 1
577 ctrl_area->svm_instrs.VMRUN = 1;
578 // guest_state->cr0 = 0x00000001; // PE
579 ctrl_area->guest_ASID = 1;
582 ctrl_area->exceptions.de = 1;
583 ctrl_area->exceptions.df = 1;
584 ctrl_area->exceptions.pf = 1;
585 ctrl_area->exceptions.ts = 1;
586 ctrl_area->exceptions.ss = 1;
587 ctrl_area->exceptions.ac = 1;
588 ctrl_area->exceptions.mc = 1;
589 ctrl_area->exceptions.gp = 1;
590 ctrl_area->exceptions.ud = 1;
591 ctrl_area->exceptions.np = 1;
592 ctrl_area->exceptions.of = 1;
593 ctrl_area->exceptions.nmi = 1;
595 guest_state->cs.selector = 0x0000;
596 guest_state->cs.limit=~0u;
597 guest_state->cs.base = guest_state->cs.selector<<4;
598 guest_state->cs.attrib.raw = 0xf3;
601 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
602 for ( i = 0; segregs[i] != NULL; i++) {
603 struct vmcb_selector * seg = segregs[i];
605 seg->selector = 0x0000;
606 seg->base = seg->selector << 4;
607 seg->attrib.raw = 0xf3;
611 if (vm_info.io_map.num_ports > 0) {
612 struct vmm_io_hook * iter;
613 addr_t io_port_bitmap;
615 io_port_bitmap = (addr_t)V3_AllocPages(3);
616 memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
618 ctrl_area->IOPM_BASE_PA = io_port_bitmap;
620 //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
622 FOREACH_IO_HOOK(vm_info.io_map, iter) {
623 ushort_t port = iter->port;
624 uchar_t * bitmap = (uchar_t *)io_port_bitmap;
626 bitmap += (port / 8);
627 PrintDebug("Setting Bit in block %x\n", bitmap);
628 *bitmap |= 1 << (port % 8);
632 //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
634 ctrl_area->instrs.IOIO_PROT = 1;
637 ctrl_area->instrs.INTR = 1;
641 if (vm_info.page_mode == SHADOW_PAGING) {
642 PrintDebug("Creating initial shadow page table\n");
643 vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
644 PrintDebug("Created\n");
646 guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3;
648 ctrl_area->cr_reads.cr3 = 1;
649 ctrl_area->cr_writes.cr3 = 1;
652 ctrl_area->instrs.INVLPG = 1;
653 ctrl_area->instrs.INVLPGA = 1;
655 guest_state->g_pat = 0x7040600070406ULL;
657 guest_state->cr0 |= 0x80000000;
658 } else if (vm_info.page_mode == NESTED_PAGING) {
659 // Flush the TLB on entries/exits
660 //ctrl_area->TLB_CONTROL = 1;
662 // Enable Nested Paging
663 //ctrl_area->NP_ENABLE = 1;
665 //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
667 // Set the Nested Page Table pointer
668 // ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
669 // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
671 // ctrl_area->N_CR3 = Get_CR3();
672 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
674 // guest_state->g_pat = 0x7040600070406ULL;
689 void Init_VMCB_pe(vmcb_t *vmcb, struct guest_info vm_info) {
690 vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
691 vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
695 guest_state->rsp = vm_info.vm_regs.rsp;
696 guest_state->rip = vm_info.rip;
699 /* I pretty much just gutted this from TVMM */
700 /* Note: That means its probably wrong */
702 // set the segment registers to mirror ours
703 guest_state->cs.selector = 1<<3;
704 guest_state->cs.attrib.fields.type = 0xa; // Code segment+read
705 guest_state->cs.attrib.fields.S = 1;
706 guest_state->cs.attrib.fields.P = 1;
707 guest_state->cs.attrib.fields.db = 1;
708 guest_state->cs.attrib.fields.G = 1;
709 guest_state->cs.limit = 0xfffff;
710 guest_state->cs.base = 0;
712 struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
713 for ( i = 0; segregs[i] != NULL; i++) {
714 struct vmcb_selector * seg = segregs[i];
716 seg->selector = 2<<3;
717 seg->attrib.fields.type = 0x2; // Data Segment+read/write
718 seg->attrib.fields.S = 1;
719 seg->attrib.fields.P = 1;
720 seg->attrib.fields.db = 1;
721 seg->attrib.fields.G = 1;
722 seg->limit = 0xfffff;
728 /* JRL THIS HAS TO GO */
730 // guest_state->tr.selector = GetTR_Selector();
731 guest_state->tr.attrib.fields.type = 0x9;
732 guest_state->tr.attrib.fields.P = 1;
733 // guest_state->tr.limit = GetTR_Limit();
734 //guest_state->tr.base = GetTR_Base();// - 0x2000;
742 guest_state->efer |= EFER_MSR_svm_enable;
743 guest_state->rflags = 0x00000002; // The reserved bit is always 1
744 ctrl_area->svm_instrs.VMRUN = 1;
745 guest_state->cr0 = 0x00000001; // PE
746 ctrl_area->guest_ASID = 1;
749 // guest_state->cpl = 0;
755 ctrl_area->cr_writes.cr4 = 1;
757 ctrl_area->exceptions.de = 1;
758 ctrl_area->exceptions.df = 1;
759 ctrl_area->exceptions.pf = 1;
760 ctrl_area->exceptions.ts = 1;
761 ctrl_area->exceptions.ss = 1;
762 ctrl_area->exceptions.ac = 1;
763 ctrl_area->exceptions.mc = 1;
764 ctrl_area->exceptions.gp = 1;
765 ctrl_area->exceptions.ud = 1;
766 ctrl_area->exceptions.np = 1;
767 ctrl_area->exceptions.of = 1;
768 ctrl_area->exceptions.nmi = 1;
772 ctrl_area->instrs.IOIO_PROT = 1;
773 ctrl_area->IOPM_BASE_PA = (uint_t)V3_AllocPages(3);
777 tmp_reg.r_reg = ctrl_area->IOPM_BASE_PA;
778 memset((void*)(tmp_reg.e_reg.low), 0xffffffff, PAGE_SIZE * 2);
781 ctrl_area->instrs.INTR = 1;
788 memset(gdt_buf, 0, 6);
789 memset(idt_buf, 0, 6);
792 uint_t gdt_base, idt_base;
793 ushort_t gdt_limit, idt_limit;
796 gdt_base = *(ulong_t*)((uchar_t*)gdt_buf + 2) & 0xffffffff;
797 gdt_limit = *(ushort_t*)(gdt_buf) & 0xffff;
798 PrintDebug("GDT: base: %x, limit: %x\n", gdt_base, gdt_limit);
801 idt_base = *(ulong_t*)(idt_buf + 2) & 0xffffffff;
802 idt_limit = *(ushort_t*)(idt_buf) & 0xffff;
803 PrintDebug("IDT: base: %x, limit: %x\n",idt_base, idt_limit);
806 // gdt_base -= 0x2000;
807 //idt_base -= 0x2000;
809 guest_state->gdtr.base = gdt_base;
810 guest_state->gdtr.limit = gdt_limit;
811 guest_state->idtr.base = idt_base;
812 guest_state->idtr.limit = idt_limit;
818 // also determine if CPU supports nested paging
820 if (vm_info.page_tables) {
822 // Flush the TLB on entries/exits
823 ctrl_area->TLB_CONTROL = 1;
825 // Enable Nested Paging
826 ctrl_area->NP_ENABLE = 1;
828 PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
830 // Set the Nested Page Table pointer
831 ctrl_area->N_CR3 |= ((addr_t)vm_info.page_tables & 0xfffff000);
834 // ctrl_area->N_CR3 = Get_CR3();
835 // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
837 guest_state->g_pat = 0x7040600070406ULL;
839 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));
840 PrintDebug("Set Guest CR3: lo: 0x%x hi: 0x%x\n", (uint_t)*(&(guest_state->cr3)), (uint_t)*((unsigned char *)&(guest_state->cr3) + 4));
842 // guest_state->cr0 |= 0x80000000;