3 #include "kvm/interrupt.h"
4 #include "kvm/cpufeature.h"
10 #include <asm/bootparam.h>
12 #include <sys/ioctl.h>
27 * Compatibility code. Remove this when we move to tools/kvm.
29 #ifndef KVM_EXIT_INTERNAL_ERROR
30 # define KVM_EXIT_INTERNAL_ERROR 17
33 #define DEFINE_KVM_EXIT_REASON(reason) [reason] = #reason
35 const char *kvm_exit_reasons[] = {
36 DEFINE_KVM_EXIT_REASON(KVM_EXIT_UNKNOWN),
37 DEFINE_KVM_EXIT_REASON(KVM_EXIT_EXCEPTION),
38 DEFINE_KVM_EXIT_REASON(KVM_EXIT_IO),
39 DEFINE_KVM_EXIT_REASON(KVM_EXIT_HYPERCALL),
40 DEFINE_KVM_EXIT_REASON(KVM_EXIT_DEBUG),
41 DEFINE_KVM_EXIT_REASON(KVM_EXIT_HLT),
42 DEFINE_KVM_EXIT_REASON(KVM_EXIT_MMIO),
43 DEFINE_KVM_EXIT_REASON(KVM_EXIT_IRQ_WINDOW_OPEN),
44 DEFINE_KVM_EXIT_REASON(KVM_EXIT_SHUTDOWN),
45 DEFINE_KVM_EXIT_REASON(KVM_EXIT_FAIL_ENTRY),
46 DEFINE_KVM_EXIT_REASON(KVM_EXIT_INTR),
47 DEFINE_KVM_EXIT_REASON(KVM_EXIT_SET_TPR),
48 DEFINE_KVM_EXIT_REASON(KVM_EXIT_TPR_ACCESS),
49 DEFINE_KVM_EXIT_REASON(KVM_EXIT_S390_SIEIC),
50 DEFINE_KVM_EXIT_REASON(KVM_EXIT_S390_RESET),
51 DEFINE_KVM_EXIT_REASON(KVM_EXIT_DCR),
52 DEFINE_KVM_EXIT_REASON(KVM_EXIT_NMI),
53 DEFINE_KVM_EXIT_REASON(KVM_EXIT_INTERNAL_ERROR),
56 #define DEFINE_KVM_EXT(ext) \
64 { DEFINE_KVM_EXT(KVM_CAP_COALESCED_MMIO) },
65 { DEFINE_KVM_EXT(KVM_CAP_SET_TSS_ADDR) },
66 { DEFINE_KVM_EXT(KVM_CAP_PIT2) },
67 { DEFINE_KVM_EXT(KVM_CAP_USER_MEMORY) },
68 { DEFINE_KVM_EXT(KVM_CAP_IRQ_ROUTING) },
69 { DEFINE_KVM_EXT(KVM_CAP_IRQCHIP) },
70 { DEFINE_KVM_EXT(KVM_CAP_HLT) },
71 { DEFINE_KVM_EXT(KVM_CAP_IRQ_INJECT_STATUS) },
72 { DEFINE_KVM_EXT(KVM_CAP_EXT_CPUID) },
75 static bool kvm__supports_extension(struct kvm *self, unsigned int extension)
79 ret = ioctl(self->sys_fd, KVM_CHECK_EXTENSION, extension);
86 static int kvm__check_extensions(struct kvm *self)
90 for (i = 0; i < ARRAY_SIZE(kvm_req_ext); i++) {
91 if (!kvm__supports_extension(self, kvm_req_ext[i].code)) {
92 error("Unsuppored KVM extension detected: %s",
101 static struct kvm *kvm__new(void)
103 struct kvm *self = calloc(1, sizeof *self);
106 die("out of memory");
111 void kvm__delete(struct kvm *self)
113 free(self->ram_start);
117 static bool kvm__cpu_supports_vm(void)
119 struct cpuid_regs regs;
123 regs = (struct cpuid_regs) {
129 case CPUID_VENDOR_INTEL_1:
131 feature = KVM__X86_FEATURE_VMX;
134 case CPUID_VENDOR_AMD_1:
135 eax_base = 0x80000000;
136 feature = KVM__X86_FEATURE_SVM;
143 regs = (struct cpuid_regs) {
148 if (regs.eax < eax_base + 0x01)
151 regs = (struct cpuid_regs) {
152 .eax = eax_base + 0x01
156 return regs.ecx & (1 << feature);
159 struct kvm *kvm__init(const char *kvm_dev, unsigned long ram_size)
161 struct kvm_userspace_memory_region mem;
162 struct kvm_pit_config pit_config = { .flags = 0, };
168 if (!kvm__cpu_supports_vm())
169 die("Your CPU does not support hardware virtualization");
173 self->sys_fd = open(kvm_dev, O_RDWR);
174 if (self->sys_fd < 0) {
176 die("'%s' not found. Please make sure you have CONFIG_KVM enabled.", kvm_dev);
181 ret = ioctl(self->sys_fd, KVM_GET_API_VERSION, 0);
182 if (ret != KVM_API_VERSION)
183 die_perror("KVM_API_VERSION ioctl");
185 self->vm_fd = ioctl(self->sys_fd, KVM_CREATE_VM, 0);
187 die_perror("KVM_CREATE_VM ioctl");
189 if (kvm__check_extensions(self))
190 die("A required KVM extention is not supported by OS");
192 ret = ioctl(self->vm_fd, KVM_SET_TSS_ADDR, 0xfffbd000);
194 die_perror("KVM_SET_TSS_ADDR ioctl");
196 ret = ioctl(self->vm_fd, KVM_CREATE_PIT2, &pit_config);
198 die_perror("KVM_CREATE_PIT2 ioctl");
200 self->ram_size = ram_size;
202 page_size = sysconf(_SC_PAGESIZE);
203 if (posix_memalign(&self->ram_start, page_size, self->ram_size) != 0)
204 die("out of memory");
206 mem = (struct kvm_userspace_memory_region) {
208 .guest_phys_addr = 0x0UL,
209 .memory_size = self->ram_size,
210 .userspace_addr = (unsigned long) self->ram_start,
213 ret = ioctl(self->vm_fd, KVM_SET_USER_MEMORY_REGION, &mem);
215 die_perror("KVM_SET_USER_MEMORY_REGION ioctl");
217 ret = ioctl(self->vm_fd, KVM_CREATE_IRQCHIP);
219 die_perror("KVM_CREATE_IRQCHIP ioctl");
221 self->vcpu_fd = ioctl(self->vm_fd, KVM_CREATE_VCPU, 0);
222 if (self->vcpu_fd < 0)
223 die_perror("KVM_CREATE_VCPU ioctl");
225 mmap_size = ioctl(self->sys_fd, KVM_GET_VCPU_MMAP_SIZE, 0);
227 die_perror("KVM_GET_VCPU_MMAP_SIZE ioctl");
229 self->kvm_run = mmap(NULL, mmap_size, PROT_READ|PROT_WRITE, MAP_SHARED, self->vcpu_fd, 0);
230 if (self->kvm_run == MAP_FAILED)
231 die("unable to mmap vcpu fd");
236 void kvm__enable_singlestep(struct kvm *self)
238 struct kvm_guest_debug debug = {
239 .control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP,
242 if (ioctl(self->vcpu_fd, KVM_SET_GUEST_DEBUG, &debug) < 0)
243 warning("KVM_SET_GUEST_DEBUG failed");
246 #define BOOT_LOADER_SELECTOR 0x1000
247 #define BOOT_LOADER_IP 0x0000
248 #define BOOT_LOADER_SP 0x8000
249 #define BOOT_CMDLINE_OFFSET 0x20000
251 #define BOOT_PROTOCOL_REQUIRED 0x202
252 #define LOAD_HIGH 0x01
254 static int load_flat_binary(struct kvm *self, int fd)
259 if (lseek(fd, 0, SEEK_SET) < 0)
262 p = guest_real_to_host(self, BOOT_LOADER_SELECTOR, BOOT_LOADER_IP);
264 while ((nr = read(fd, p, 65536)) > 0)
267 self->boot_selector = BOOT_LOADER_SELECTOR;
268 self->boot_ip = BOOT_LOADER_IP;
269 self->boot_sp = BOOT_LOADER_SP;
275 * The protected mode kernel part of a modern bzImage is loaded at 1 MB by
278 #define BZ_KERNEL_START 0x100000UL
279 #define INITRD_START 0x1000000UL
280 #define BZ_DEFAULT_SETUP_SECTS 4
281 static const char *BZIMAGE_MAGIC = "HdrS";
283 static bool load_bzimage(struct kvm *self, int fd_kernel,
284 int fd_initrd, const char *kernel_cmdline)
286 struct boot_params *kern_boot;
287 unsigned long setup_sects;
288 struct boot_params boot;
295 * See Documentation/x86/boot.txt for details no bzImage on-disk and
299 if (lseek(fd_kernel, 0, SEEK_SET) < 0)
302 if (read(fd_kernel, &boot, sizeof(boot)) != sizeof(boot))
305 if (memcmp(&boot.hdr.header, BZIMAGE_MAGIC, strlen(BZIMAGE_MAGIC)))
308 if (boot.hdr.version < BOOT_PROTOCOL_REQUIRED) {
309 die("Too old kernel");
312 if (lseek(fd_kernel, 0, SEEK_SET) < 0)
315 if (!boot.hdr.setup_sects)
316 boot.hdr.setup_sects = BZ_DEFAULT_SETUP_SECTS;
317 setup_sects = boot.hdr.setup_sects + 1;
319 setup_size = setup_sects << 9;
320 p = guest_real_to_host(self, BOOT_LOADER_SELECTOR, BOOT_LOADER_IP);
322 /* copy setup.bin to mem*/
323 if (read(fd_kernel, p, setup_size) != setup_size)
326 /* copy vmlinux.bin to BZ_KERNEL_START*/
327 p = guest_flat_to_host(self, BZ_KERNEL_START);
329 while ((nr = read(fd_kernel, p, 65536)) > 0)
332 p = guest_flat_to_host(self, BOOT_CMDLINE_OFFSET);
333 if (kernel_cmdline) {
334 cmdline_size = strlen(kernel_cmdline) + 1;
335 if (cmdline_size > boot.hdr.cmdline_size)
336 cmdline_size = boot.hdr.cmdline_size;
338 memset(p, 0, boot.hdr.cmdline_size);
339 memcpy(p, kernel_cmdline, cmdline_size - 1);
342 kern_boot = guest_real_to_host(self, BOOT_LOADER_SELECTOR, 0x00);
344 kern_boot->hdr.cmd_line_ptr = BOOT_CMDLINE_OFFSET;
345 kern_boot->hdr.type_of_loader = 0xff;
346 kern_boot->hdr.heap_end_ptr = 0xfe00;
347 kern_boot->hdr.loadflags |= CAN_USE_HEAP;
350 * Read initrd image into guest memory
352 if (fd_initrd >= 0) {
353 struct stat initrd_stat;
356 if (fstat(fd_initrd, &initrd_stat))
359 addr = boot.hdr.initrd_addr_max & ~0xfffff;
361 if (addr < BZ_KERNEL_START)
362 die("Not enough memory for initrd");
363 else if (addr < (self->ram_size - initrd_stat.st_size))
368 p = guest_flat_to_host(self, addr);
369 nr = read(fd_initrd, p, initrd_stat.st_size);
370 if (nr != initrd_stat.st_size)
371 die("Failed to read initrd");
373 kern_boot->hdr.ramdisk_image = addr;
374 kern_boot->hdr.ramdisk_size = initrd_stat.st_size;
377 self->boot_selector = BOOT_LOADER_SELECTOR;
379 * The real-mode setup code starts at offset 0x200 of a bzImage. See
380 * Documentation/x86/boot.txt for details.
382 self->boot_ip = BOOT_LOADER_IP + 0x200;
383 self->boot_sp = BOOT_LOADER_SP;
386 * Drum roll, BIOS is coming to live, oh dear...
393 bool kvm__load_kernel(struct kvm *kvm, const char *kernel_filename,
394 const char *initrd_filename, const char *kernel_cmdline)
397 int fd_kernel = -1, fd_initrd = -1;
399 fd_kernel = open(kernel_filename, O_RDONLY);
401 die("Unable to open kernel %s", kernel_filename);
403 if (initrd_filename) {
404 fd_initrd = open(initrd_filename, O_RDONLY);
406 die("Unable to open initrd %s", initrd_filename);
409 ret = load_bzimage(kvm, fd_kernel, fd_initrd, kernel_cmdline);
417 warning("%s is not a bzImage. Trying to load it as a flat binary...", kernel_filename);
419 ret = load_flat_binary(kvm, fd_kernel);
423 die("%s is not a valid bzImage or flat binary", kernel_filename);
429 static inline uint64_t ip_flat_to_real(struct kvm *self, uint64_t ip)
431 uint64_t cs = self->sregs.cs.selector;
433 return ip - (cs << 4);
436 static inline bool is_in_protected_mode(struct kvm *self)
438 return self->sregs.cr0 & 0x01;
441 static inline uint64_t ip_to_flat(struct kvm *self, uint64_t ip)
446 * NOTE! We should take code segment base address into account here.
447 * Luckily it's usually zero because Linux uses flat memory model.
449 if (is_in_protected_mode(self))
452 cs = self->sregs.cs.selector;
454 return ip + (cs << 4);
457 static inline uint32_t selector_to_base(uint16_t selector)
460 * KVM on Intel requires 'base' to be 'selector * 16' in real mode.
462 return (uint32_t)selector * 16;
465 static struct kvm_msrs *kvm_msrs__new(size_t nmsrs)
467 struct kvm_msrs *self = calloc(1, sizeof(*self) + (sizeof(struct kvm_msr_entry) * nmsrs));
470 die("out of memory");
475 #define MSR_IA32_TIME_STAMP_COUNTER 0x10
477 #define MSR_IA32_SYSENTER_CS 0x174
478 #define MSR_IA32_SYSENTER_ESP 0x175
479 #define MSR_IA32_SYSENTER_EIP 0x176
481 #define MSR_IA32_STAR 0xc0000081
482 #define MSR_IA32_LSTAR 0xc0000082
483 #define MSR_IA32_CSTAR 0xc0000083
484 #define MSR_IA32_FMASK 0xc0000084
485 #define MSR_IA32_KERNEL_GS_BASE 0xc0000102
487 #define KVM_MSR_ENTRY(_index, _data) \
488 (struct kvm_msr_entry) { .index = _index, .data = _data }
490 static void kvm__setup_msrs(struct kvm *self)
492 unsigned long ndx = 0;
494 self->msrs = kvm_msrs__new(100);
496 self->msrs->entries[ndx++] = KVM_MSR_ENTRY(MSR_IA32_SYSENTER_CS, 0x0);
497 self->msrs->entries[ndx++] = KVM_MSR_ENTRY(MSR_IA32_SYSENTER_ESP, 0x0);
498 self->msrs->entries[ndx++] = KVM_MSR_ENTRY(MSR_IA32_SYSENTER_EIP, 0x0);
500 self->msrs->entries[ndx++] = KVM_MSR_ENTRY(MSR_IA32_STAR, 0x0);
501 self->msrs->entries[ndx++] = KVM_MSR_ENTRY(MSR_IA32_CSTAR, 0x0);
502 self->msrs->entries[ndx++] = KVM_MSR_ENTRY(MSR_IA32_KERNEL_GS_BASE, 0x0);
503 self->msrs->entries[ndx++] = KVM_MSR_ENTRY(MSR_IA32_FMASK, 0x0);
504 self->msrs->entries[ndx++] = KVM_MSR_ENTRY(MSR_IA32_LSTAR, 0x0);
506 self->msrs->entries[ndx++] = KVM_MSR_ENTRY(MSR_IA32_TIME_STAMP_COUNTER, 0x0);
508 self->msrs->nmsrs = ndx;
510 if (ioctl(self->vcpu_fd, KVM_SET_MSRS, self->msrs) < 0)
511 die_perror("KVM_SET_MSRS failed");
514 static void kvm__setup_fpu(struct kvm *self)
516 self->fpu = (struct kvm_fpu) {
521 if (ioctl(self->vcpu_fd, KVM_SET_FPU, &self->fpu) < 0)
522 die_perror("KVM_SET_FPU failed");
525 static void kvm__setup_regs(struct kvm *self)
527 self->regs = (struct kvm_regs) {
528 /* We start the guest in 16-bit real mode */
529 .rflags = 0x0000000000000002ULL,
531 .rip = self->boot_ip,
532 .rsp = self->boot_sp,
533 .rbp = self->boot_sp,
536 if (self->regs.rip > USHRT_MAX)
537 die("ip 0x%" PRIx64 " is too high for real mode", (uint64_t) self->regs.rip);
539 if (ioctl(self->vcpu_fd, KVM_SET_REGS, &self->regs) < 0)
540 die_perror("KVM_SET_REGS failed");
543 static void kvm__setup_sregs(struct kvm *self)
546 if (ioctl(self->vcpu_fd, KVM_GET_SREGS, &self->sregs) < 0)
547 die_perror("KVM_GET_SREGS failed");
549 self->sregs.cs.selector = self->boot_selector;
550 self->sregs.cs.base = selector_to_base(self->boot_selector);
551 self->sregs.ss.selector = self->boot_selector;
552 self->sregs.ss.base = selector_to_base(self->boot_selector);
553 self->sregs.ds.selector = self->boot_selector;
554 self->sregs.ds.base = selector_to_base(self->boot_selector);
555 self->sregs.es.selector = self->boot_selector;
556 self->sregs.es.base = selector_to_base(self->boot_selector);
557 self->sregs.fs.selector = self->boot_selector;
558 self->sregs.fs.base = selector_to_base(self->boot_selector);
559 self->sregs.gs.selector = self->boot_selector;
560 self->sregs.gs.base = selector_to_base(self->boot_selector);
562 if (ioctl(self->vcpu_fd, KVM_SET_SREGS, &self->sregs) < 0)
563 die_perror("KVM_SET_SREGS failed");
566 void kvm__reset_vcpu(struct kvm *self)
568 kvm__setup_sregs(self);
570 kvm__setup_regs(self);
572 kvm__setup_fpu(self);
574 kvm__setup_msrs(self);
577 void kvm__setup_mem(struct kvm *self)
579 struct e820_entry *mem_map;
582 size = guest_flat_to_host(self, E820_MAP_SIZE);
583 mem_map = guest_flat_to_host(self, E820_MAP_START);
587 mem_map[0] = (struct e820_entry) {
588 .addr = REAL_MODE_IVT_BEGIN,
589 .size = EBDA_START - REAL_MODE_IVT_BEGIN,
590 .type = E820_MEM_USABLE,
592 mem_map[1] = (struct e820_entry) {
594 .size = VGA_RAM_BEGIN - EBDA_START,
595 .type = E820_MEM_RESERVED,
597 mem_map[2] = (struct e820_entry) {
598 .addr = MB_BIOS_BEGIN,
599 .size = MB_BIOS_END - MB_BIOS_BEGIN,
600 .type = E820_MEM_RESERVED,
602 mem_map[3] = (struct e820_entry) {
603 .addr = BZ_KERNEL_START,
604 .size = self->ram_size - BZ_KERNEL_START,
605 .type = E820_MEM_USABLE,
609 void kvm__run(struct kvm *self)
611 if (ioctl(self->vcpu_fd, KVM_RUN, 0) < 0)
612 die_perror("KVM_RUN failed");
615 void kvm__irq_line(struct kvm *self, int irq, int level)
617 struct kvm_irq_level irq_level;
619 irq_level = (struct kvm_irq_level) {
626 if (ioctl(self->vm_fd, KVM_IRQ_LINE, &irq_level) < 0)
627 die_perror("KVM_IRQ_LINE failed");
630 static void print_dtable(const char *name, struct kvm_dtable *dtable)
632 printf(" %s %016" PRIx64 " %08" PRIx16 "\n",
633 name, (uint64_t) dtable->base, (uint16_t) dtable->limit);
636 static void print_segment(const char *name, struct kvm_segment *seg)
638 printf(" %s %04" PRIx16 " %016" PRIx64 " %08" PRIx32 " %02" PRIx8 " %x %x %x %x %x %x %x\n",
639 name, (uint16_t) seg->selector, (uint64_t) seg->base, (uint32_t) seg->limit,
640 (uint8_t) seg->type, seg->present, seg->dpl, seg->db, seg->s, seg->l, seg->g, seg->avl);
643 void kvm__show_registers(struct kvm *self)
645 unsigned long cr0, cr2, cr3;
646 unsigned long cr4, cr8;
647 unsigned long rax, rbx, rcx;
648 unsigned long rdx, rsi, rdi;
649 unsigned long rbp, r8, r9;
650 unsigned long r10, r11, r12;
651 unsigned long r13, r14, r15;
652 unsigned long rip, rsp;
653 struct kvm_sregs sregs;
654 unsigned long rflags;
655 struct kvm_regs regs;
658 if (ioctl(self->vcpu_fd, KVM_GET_REGS, ®s) < 0)
659 die("KVM_GET_REGS failed");
661 rflags = regs.rflags;
663 rip = regs.rip; rsp = regs.rsp;
664 rax = regs.rax; rbx = regs.rbx; rcx = regs.rcx;
665 rdx = regs.rdx; rsi = regs.rsi; rdi = regs.rdi;
666 rbp = regs.rbp; r8 = regs.r8; r9 = regs.r9;
667 r10 = regs.r10; r11 = regs.r11; r12 = regs.r12;
668 r13 = regs.r13; r14 = regs.r14; r15 = regs.r15;
670 printf("Registers:\n");
671 printf(" rip: %016lx rsp: %016lx flags: %016lx\n", rip, rsp, rflags);
672 printf(" rax: %016lx rbx: %016lx rcx: %016lx\n", rax, rbx, rcx);
673 printf(" rdx: %016lx rsi: %016lx rdi: %016lx\n", rdx, rsi, rdi);
674 printf(" rbp: %016lx r8: %016lx r9: %016lx\n", rbp, r8, r9);
675 printf(" r10: %016lx r11: %016lx r12: %016lx\n", r10, r11, r12);
676 printf(" r13: %016lx r14: %016lx r15: %016lx\n", r13, r14, r15);
678 if (ioctl(self->vcpu_fd, KVM_GET_SREGS, &sregs) < 0)
679 die("KVM_GET_REGS failed");
681 cr0 = sregs.cr0; cr2 = sregs.cr2; cr3 = sregs.cr3;
682 cr4 = sregs.cr4; cr8 = sregs.cr8;
684 printf(" cr0: %016lx cr2: %016lx cr3: %016lx\n", cr0, cr2, cr3);
685 printf(" cr4: %016lx cr8: %016lx\n", cr4, cr8);
686 printf("Segment registers:\n");
687 printf(" register selector base limit type p dpl db s l g avl\n");
688 print_segment("cs ", &sregs.cs);
689 print_segment("ss ", &sregs.ss);
690 print_segment("ds ", &sregs.ds);
691 print_segment("es ", &sregs.es);
692 print_segment("fs ", &sregs.fs);
693 print_segment("gs ", &sregs.gs);
694 print_segment("tr ", &sregs.tr);
695 print_segment("ldt", &sregs.ldt);
696 print_dtable("gdt", &sregs.gdt);
697 print_dtable("idt", &sregs.idt);
698 printf(" [ efer: %016" PRIx64 " apic base: %016" PRIx64 " nmi: %s ]\n",
699 (uint64_t) sregs.efer, (uint64_t) sregs.apic_base,
700 (self->nmi_disabled ? "disabled" : "enabled"));
701 printf("Interrupt bitmap:\n");
703 for (i = 0; i < (KVM_NR_INTERRUPTS + 63) / 64; i++)
704 printf("%016" PRIx64 " ", (uint64_t) sregs.interrupt_bitmap[i]);
708 void kvm__show_code(struct kvm *self)
710 unsigned int code_bytes = 64;
711 unsigned int code_prologue = code_bytes * 43 / 64;
712 unsigned int code_len = code_bytes;
717 if (ioctl(self->vcpu_fd, KVM_GET_REGS, &self->regs) < 0)
718 die("KVM_GET_REGS failed");
720 if (ioctl(self->vcpu_fd, KVM_GET_SREGS, &self->sregs) < 0)
721 die("KVM_GET_SREGS failed");
723 ip = guest_flat_to_host(self, ip_to_flat(self, self->regs.rip) - code_prologue);
727 for (i = 0; i < code_len; i++, ip++) {
728 if (!host_ptr_in_ram(self, ip))
733 if (ip == guest_flat_to_host(self, ip_to_flat(self, self->regs.rip)))
734 printf("<%02x> ", c);
742 kvm__dump_mem(self, self->regs.rsp, 32);
745 void kvm__show_page_tables(struct kvm *self)
752 if (!is_in_protected_mode(self))
755 if (ioctl(self->vcpu_fd, KVM_GET_SREGS, &self->sregs) < 0)
756 die("KVM_GET_SREGS failed");
758 pte4 = guest_flat_to_host(self, self->sregs.cr3);
759 if (!host_ptr_in_ram(self, pte4))
762 pte3 = guest_flat_to_host(self, (*pte4 & ~0xfff));
763 if (!host_ptr_in_ram(self, pte3))
766 pte2 = guest_flat_to_host(self, (*pte3 & ~0xfff));
767 if (!host_ptr_in_ram(self, pte2))
770 pte1 = guest_flat_to_host(self, (*pte2 & ~0xfff));
771 if (!host_ptr_in_ram(self, pte1))
774 printf("Page Tables:\n");
775 if (*pte2 & (1 << 7))
776 printf(" pte4: %016" PRIx64 " pte3: %016" PRIx64
777 " pte2: %016" PRIx64 "\n",
778 *pte4, *pte3, *pte2);
780 printf(" pte4: %016" PRIx64 " pte3: %016" PRIx64 " pte2: %016"
781 PRIx64 " pte1: %016" PRIx64 "\n",
782 *pte4, *pte3, *pte2, *pte1);
785 void kvm__dump_mem(struct kvm *self, unsigned long addr, unsigned long size)
790 size &= ~7; /* mod 8 */
794 p = guest_flat_to_host(self, addr);
796 for (n = 0; n < size; n+=8) {
797 if (!host_ptr_in_ram(self, p + n))
800 printf(" 0x%08lx: %02x %02x %02x %02x %02x %02x %02x %02x\n",
801 addr + n, p[n + 0], p[n + 1], p[n + 2], p[n + 3],
802 p[n + 4], p[n + 5], p[n + 6], p[n + 7]);