xref: /kvmtool/kvm.c (revision e3a07fc182c6c4e6bc55fcab409468ec01b21a3f)
16c7d8514SPekka Enberg #include <linux/kvm.h>
2f5ab5f67SPekka Enberg 
3f5ab5f67SPekka Enberg #include <asm/bootparam.h>
4f5ab5f67SPekka Enberg 
51f9cff23SPekka Enberg #include <inttypes.h>
61f9cff23SPekka Enberg #include <sys/mman.h>
72da26a59SPekka Enberg #include <stdbool.h>
8f5ab5f67SPekka Enberg #include <stdarg.h>
9b8f6afcdSPekka Enberg #include <stdlib.h>
10f5ab5f67SPekka Enberg #include <string.h>
110d1f17ecSPekka Enberg #include <unistd.h>
121f9cff23SPekka Enberg #include <stdio.h>
13b8f6afcdSPekka Enberg #include <fcntl.h>
14b8f6afcdSPekka Enberg 
151f9cff23SPekka Enberg /*
161f9cff23SPekka Enberg  * Compatibility code. Remove this when we move to tools/kvm.
171f9cff23SPekka Enberg  */
181f9cff23SPekka Enberg #ifndef KVM_EXIT_INTERNAL_ERROR
191f9cff23SPekka Enberg # define KVM_EXIT_INTERNAL_ERROR		17
201f9cff23SPekka Enberg #endif
211f9cff23SPekka Enberg 
229b1fb1c3SPekka Enberg struct kvm {
2373ac60e6SPekka Enberg 	int			sys_fd;		/* For system ioctls(), i.e. /dev/kvm */
2473ac60e6SPekka Enberg 	int			vm_fd;		/* For VM ioctls() */
2573ac60e6SPekka Enberg 	int			vcpu_fd;	/* For VCPU ioctls() */
261f9cff23SPekka Enberg 	struct kvm_run		*kvm_run;
270d1f17ecSPekka Enberg 
280d1f17ecSPekka Enberg 	uint64_t		ram_size;
290d1f17ecSPekka Enberg 	void			*ram_start;
308e126405SPekka Enberg 
318e126405SPekka Enberg 	struct kvm_regs		regs;
329b1fb1c3SPekka Enberg };
339b1fb1c3SPekka Enberg 
34f5ab5f67SPekka Enberg static void die_perror(const char *s)
35b8f6afcdSPekka Enberg {
36b8f6afcdSPekka Enberg 	perror(s);
37b8f6afcdSPekka Enberg 	exit(1);
38b8f6afcdSPekka Enberg }
39b8f6afcdSPekka Enberg 
40f5ab5f67SPekka Enberg static void die(const char *format, ...)
41f5ab5f67SPekka Enberg {
42f5ab5f67SPekka Enberg         va_list ap;
43f5ab5f67SPekka Enberg 
44f5ab5f67SPekka Enberg         va_start(ap, format);
45f5ab5f67SPekka Enberg         vprintf(format, ap);
46f5ab5f67SPekka Enberg         va_end(ap);
47f5ab5f67SPekka Enberg 
48f5ab5f67SPekka Enberg         printf("\n");
49f5ab5f67SPekka Enberg 	exit(1);
50f5ab5f67SPekka Enberg }
51f5ab5f67SPekka Enberg 
524076b041SPekka Enberg static inline bool kvm__supports_extension(struct kvm *self, unsigned int extension)
53b8f6afcdSPekka Enberg {
5428fa19c0SPekka Enberg 	int ret;
55b8f6afcdSPekka Enberg 
5673ac60e6SPekka Enberg 	ret = ioctl(self->sys_fd, KVM_CHECK_EXTENSION, extension);
574076b041SPekka Enberg 	if (ret < 0)
584076b041SPekka Enberg 		return false;
594076b041SPekka Enberg 
604076b041SPekka Enberg 	return ret;
614076b041SPekka Enberg }
624076b041SPekka Enberg 
634076b041SPekka Enberg static struct kvm *kvm__new(void)
644076b041SPekka Enberg {
654076b041SPekka Enberg 	struct kvm *self = calloc(1, sizeof *self);
664076b041SPekka Enberg 
674076b041SPekka Enberg 	if (!self)
684076b041SPekka Enberg 		die("out of memory");
694076b041SPekka Enberg 
704076b041SPekka Enberg 	return self;
714076b041SPekka Enberg }
724076b041SPekka Enberg 
734076b041SPekka Enberg static struct kvm *kvm__init(void)
744076b041SPekka Enberg {
752b0e3342SPekka Enberg 	struct kvm_userspace_memory_region mem;
764076b041SPekka Enberg 	struct kvm *self;
770d1f17ecSPekka Enberg 	long page_size;
781f9cff23SPekka Enberg 	int mmap_size;
794076b041SPekka Enberg 	int ret;
804076b041SPekka Enberg 
814076b041SPekka Enberg 	self = kvm__new();
824076b041SPekka Enberg 
8373ac60e6SPekka Enberg 	self->sys_fd = open("/dev/kvm", O_RDWR);
8473ac60e6SPekka Enberg 	if (self->sys_fd < 0)
85f5ab5f67SPekka Enberg 		die_perror("open");
86b8f6afcdSPekka Enberg 
8773ac60e6SPekka Enberg 	ret = ioctl(self->sys_fd, KVM_GET_API_VERSION, 0);
886c7d8514SPekka Enberg 	if (ret != KVM_API_VERSION)
89f5ab5f67SPekka Enberg 		die_perror("KVM_API_VERSION ioctl");
906c7d8514SPekka Enberg 
9173ac60e6SPekka Enberg 	self->vm_fd = ioctl(self->sys_fd, KVM_CREATE_VM, 0);
9273ac60e6SPekka Enberg 	if (self->vm_fd < 0)
93f5ab5f67SPekka Enberg 		die_perror("KVM_CREATE_VM ioctl");
9428fa19c0SPekka Enberg 
954076b041SPekka Enberg 	if (!kvm__supports_extension(self, KVM_CAP_USER_MEMORY))
96f5ab5f67SPekka Enberg 		die("KVM_CAP_USER_MEMORY is not supported");
972da26a59SPekka Enberg 
980d1f17ecSPekka Enberg 	self->ram_size		= 64UL * 1024UL * 1024UL;
990d1f17ecSPekka Enberg 
1000d1f17ecSPekka Enberg 	page_size	= sysconf(_SC_PAGESIZE);
1010d1f17ecSPekka Enberg 	if (posix_memalign(&self->ram_start, page_size, self->ram_size) != 0)
1020d1f17ecSPekka Enberg 		die("out of memory");
1030d1f17ecSPekka Enberg 
1042b0e3342SPekka Enberg 	mem = (struct kvm_userspace_memory_region) {
1052b0e3342SPekka Enberg 		.slot			= 0,
1062b0e3342SPekka Enberg 		.guest_phys_addr	= 0x0UL,
1070d1f17ecSPekka Enberg 		.memory_size		= self->ram_size,
1080d1f17ecSPekka Enberg 		.userspace_addr		= (unsigned long) self->ram_start,
1092b0e3342SPekka Enberg 	};
1102b0e3342SPekka Enberg 
11173ac60e6SPekka Enberg 	ret = ioctl(self->vm_fd, KVM_SET_USER_MEMORY_REGION, &mem, 1);
1122b0e3342SPekka Enberg 	if (ret < 0)
113f5ab5f67SPekka Enberg 		die_perror("KVM_SET_USER_MEMORY_REGION ioctl");
1142b0e3342SPekka Enberg 
115895c2fefSPekka Enberg 	if (!kvm__supports_extension(self, KVM_CAP_SET_TSS_ADDR))
116f5ab5f67SPekka Enberg 		die("KVM_CAP_SET_TSS_ADDR is not supported");
117895c2fefSPekka Enberg 
11873ac60e6SPekka Enberg 	ret = ioctl(self->vm_fd, KVM_SET_TSS_ADDR, 0xfffbd000);
119895c2fefSPekka Enberg 	if (ret < 0)
120f5ab5f67SPekka Enberg 		die_perror("KVM_SET_TSS_ADDR ioctl");
121895c2fefSPekka Enberg 
12273ac60e6SPekka Enberg 	self->vcpu_fd = ioctl(self->vm_fd, KVM_CREATE_VCPU, 0);
1232b0e3342SPekka Enberg 	if (self->vcpu_fd < 0)
124f5ab5f67SPekka Enberg 		die_perror("KVM_CREATE_VCPU ioctl");
1252b0e3342SPekka Enberg 
1261f9cff23SPekka Enberg 	mmap_size = ioctl(self->sys_fd, KVM_GET_VCPU_MMAP_SIZE, 0);
1271f9cff23SPekka Enberg 	if (mmap_size < 0)
128f5ab5f67SPekka Enberg 		die_perror("KVM_GET_VCPU_MMAP_SIZE ioctl");
1291f9cff23SPekka Enberg 
1301f9cff23SPekka Enberg 	self->kvm_run = mmap(NULL, mmap_size, PROT_READ|PROT_WRITE, MAP_SHARED, self->vcpu_fd, 0);
1311f9cff23SPekka Enberg 	if (self->kvm_run == MAP_FAILED)
1321f9cff23SPekka Enberg 		die("unable to mmap vcpu fd");
1331f9cff23SPekka Enberg 
1344076b041SPekka Enberg 	return self;
1354076b041SPekka Enberg }
1364076b041SPekka Enberg 
1372b0e3342SPekka Enberg static void kvm__run(struct kvm *self)
1382b0e3342SPekka Enberg {
1398e126405SPekka Enberg 	if (ioctl(self->vcpu_fd, KVM_RUN, 0) < 0)
1408e126405SPekka Enberg 		die_perror("KVM_RUN failed");
141f5ab5f67SPekka Enberg }
142f5ab5f67SPekka Enberg 
1437118d2caSPekka Enberg static void kvm__show_registers(struct kvm *self)
1447118d2caSPekka Enberg {
1457118d2caSPekka Enberg 	unsigned long rax, rbx, rcx;
1467118d2caSPekka Enberg 	unsigned long rdx, rsi, rdi;
1477118d2caSPekka Enberg 	unsigned long rbp,  r8,  r9;
1487118d2caSPekka Enberg 	unsigned long r10, r11, r12;
1497118d2caSPekka Enberg 	unsigned long r13, r14, r15;
1507118d2caSPekka Enberg 	unsigned long rip, rsp;
151a2fe6199SPekka Enberg 	unsigned long rflags;
1527118d2caSPekka Enberg 	struct kvm_regs regs;
1537118d2caSPekka Enberg 
1547118d2caSPekka Enberg 	if (ioctl(self->vcpu_fd, KVM_GET_REGS, &regs) < 0)
1557118d2caSPekka Enberg 		die("KVM_GET_REGS failed");
1567118d2caSPekka Enberg 
157a2fe6199SPekka Enberg 	rflags = regs.rflags;
158a2fe6199SPekka Enberg 
1597118d2caSPekka Enberg 	rip = regs.rip; rsp = regs.rsp;
1607118d2caSPekka Enberg 	rax = regs.rax; rbx = regs.rbx; rcx = regs.rcx;
1617118d2caSPekka Enberg 	rdx = regs.rdx; rsi = regs.rsi; rdi = regs.rdi;
1627118d2caSPekka Enberg 	rbp = regs.rbp; r8  = regs.r8;  r9  = regs.r9;
1637118d2caSPekka Enberg 	r10 = regs.r10; r11 = regs.r11; r12 = regs.r12;
1647118d2caSPekka Enberg 	r13 = regs.r13; r14 = regs.r14; r15 = regs.r15;
1657118d2caSPekka Enberg 
1667118d2caSPekka Enberg 	printf("Registers:\n");
1672177ec43SPekka Enberg 	printf(" rip: %016lx   rsp: %016lx flags: %016lx\n", rip, rsp, rflags);
1687118d2caSPekka Enberg 	printf(" rax: %016lx   ebx: %016lx   ecx: %016lx\n", rax, rbx, rcx);
1697118d2caSPekka Enberg 	printf(" rdx: %016lx   rsi: %016lx   rdi: %016lx\n", rdx, rsi, rdi);
1707118d2caSPekka Enberg 	printf(" rbp: %016lx   r8:  %016lx   r9:  %016lx\n", rbp, r8,  r9);
1717118d2caSPekka Enberg 	printf(" r10: %016lx   r11: %016lx   r12: %016lx\n", r10, r11, r12);
1727118d2caSPekka Enberg 	printf(" r13: %016lx   r14: %016lx   r15: %016lx\n", r13, r14, r15);
1737118d2caSPekka Enberg }
1747118d2caSPekka Enberg 
175ee0e89c5SPekka Enberg static inline void *guest_addr_to_host(struct kvm *self, unsigned long offset)
176ee0e89c5SPekka Enberg {
177ee0e89c5SPekka Enberg 	return self->ram_start + offset;
178ee0e89c5SPekka Enberg }
179ee0e89c5SPekka Enberg 
1806f10be05SPekka Enberg static void kvm__show_code(struct kvm *self)
1816f10be05SPekka Enberg {
1826f10be05SPekka Enberg 	unsigned int code_bytes = 64;
1836f10be05SPekka Enberg 	unsigned int code_prologue = code_bytes * 43 / 64;
1846f10be05SPekka Enberg 	unsigned int code_len = code_bytes;
1856f10be05SPekka Enberg 	unsigned char c;
1866f10be05SPekka Enberg 	uint8_t *ip;
1876f10be05SPekka Enberg 	int i;
1886f10be05SPekka Enberg 
1896f10be05SPekka Enberg 	ip = guest_addr_to_host(self, self->regs.rip - code_prologue);
1906f10be05SPekka Enberg 
1916f10be05SPekka Enberg 	printf("Code: ");
1926f10be05SPekka Enberg 
1936f10be05SPekka Enberg 	for (i = 0; i < code_len; i++, ip++) {
1946e8abc38SPekka Enberg 		c = *ip;
1956e8abc38SPekka Enberg 
1966f10be05SPekka Enberg 		if (ip == guest_addr_to_host(self, self->regs.rip))
1976f10be05SPekka Enberg 			printf("<%02x> ", c);
1986f10be05SPekka Enberg 		else
1996f10be05SPekka Enberg 			printf("%02x ", c);
2006f10be05SPekka Enberg 	}
2016f10be05SPekka Enberg 
2026f10be05SPekka Enberg 	printf("\n");
2036f10be05SPekka Enberg }
2046f10be05SPekka Enberg 
205ee0e89c5SPekka Enberg /* bzImages are loaded at 1 MB by default.  */
206ee0e89c5SPekka Enberg #define KERNEL_START_ADDR	(1024ULL * 1024ULL)
207ee0e89c5SPekka Enberg 
208f5ab5f67SPekka Enberg static const char *BZIMAGE_MAGIC	= "HdrS";
209f5ab5f67SPekka Enberg 
210ee0e89c5SPekka Enberg static uint32_t load_bzimage(struct kvm *kvm, int fd)
211f5ab5f67SPekka Enberg {
212f5ab5f67SPekka Enberg 	struct boot_params boot;
213ee0e89c5SPekka Enberg 	void *p;
214ee0e89c5SPekka Enberg 	int nr;
215f5ab5f67SPekka Enberg 
216f5ab5f67SPekka Enberg 	read(fd, &boot, sizeof(boot));
217f5ab5f67SPekka Enberg 
218f5ab5f67SPekka Enberg         if (memcmp(&boot.hdr.header, BZIMAGE_MAGIC, strlen(BZIMAGE_MAGIC)) != 0)
219f5ab5f67SPekka Enberg 		return 0;
220ee0e89c5SPekka Enberg 
221ee0e89c5SPekka Enberg 	lseek(fd, (boot.hdr.setup_sects+1) * 512, SEEK_SET);
222ee0e89c5SPekka Enberg 
223ee0e89c5SPekka Enberg 	p = guest_addr_to_host(kvm, KERNEL_START_ADDR);
224ee0e89c5SPekka Enberg 
225ee0e89c5SPekka Enberg 	while ((nr = read(fd, p, 65536)) > 0)
226ee0e89c5SPekka Enberg 		p += nr;
227ee0e89c5SPekka Enberg 
228ee0e89c5SPekka Enberg 	return boot.hdr.code32_start;
2292b0e3342SPekka Enberg }
2302b0e3342SPekka Enberg 
231ee0e89c5SPekka Enberg static uint32_t kvm__load_kernel(struct kvm *kvm, const char *kernel_filename)
232caf44df2SPekka Enberg {
233ee0e89c5SPekka Enberg 	uint32_t ret;
234f5ab5f67SPekka Enberg 	int fd;
235f5ab5f67SPekka Enberg 
236f5ab5f67SPekka Enberg 	fd = open(kernel_filename, O_RDONLY);
237f5ab5f67SPekka Enberg 	if (fd < 0)
238f5ab5f67SPekka Enberg 		die("unable to open kernel");
239f5ab5f67SPekka Enberg 
240ee0e89c5SPekka Enberg 	ret = load_bzimage(kvm, fd);
241ee0e89c5SPekka Enberg 	if (!ret)
242f5ab5f67SPekka Enberg 		die("%s is not a valid bzImage", kernel_filename);
243ee0e89c5SPekka Enberg 
244ee0e89c5SPekka Enberg 	return ret;
245caf44df2SPekka Enberg }
246caf44df2SPekka Enberg 
247d5741c92SPekka Enberg #define DEFINE_KVM_EXIT_REASON(reason) [reason] = #reason
248d5741c92SPekka Enberg 
2491f9cff23SPekka Enberg static const char *exit_reasons[] = {
250d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_UNKNOWN),
251d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_EXCEPTION),
252d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_IO),
253d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_HYPERCALL),
254d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_DEBUG),
255d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_HLT),
256d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_MMIO),
257d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_IRQ_WINDOW_OPEN),
258d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_SHUTDOWN),
259d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_FAIL_ENTRY),
260d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_INTR),
261d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_SET_TPR),
262d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_TPR_ACCESS),
263d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_S390_SIEIC),
264d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_S390_RESET),
265d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_DCR),
266d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_NMI),
267d5741c92SPekka Enberg 	DEFINE_KVM_EXIT_REASON(KVM_EXIT_INTERNAL_ERROR),
2681f9cff23SPekka Enberg };
2691f9cff23SPekka Enberg 
270caf44df2SPekka Enberg static void usage(char *argv[])
271caf44df2SPekka Enberg {
272caf44df2SPekka Enberg 	fprintf(stderr, "  usage: %s <kernel-image>\n", argv[0]);
273caf44df2SPekka Enberg 	exit(1);
274caf44df2SPekka Enberg }
275caf44df2SPekka Enberg 
276a2fe6199SPekka Enberg static void kvm__reset_vcpu(struct kvm *self, uint64_t rip)
277a2fe6199SPekka Enberg {
278a2fe6199SPekka Enberg 	self->regs.rip		= rip;
279a2fe6199SPekka Enberg 	self->regs.rflags	= 0x0000000000000002ULL;
280*e3a07fc1SPekka Enberg 
281*e3a07fc1SPekka Enberg 	if (ioctl(self->vcpu_fd, KVM_SET_REGS, &self->regs) < 0)
282*e3a07fc1SPekka Enberg 		die_perror("KVM_SET_REGS failed");
283a2fe6199SPekka Enberg }
284a2fe6199SPekka Enberg 
2858d20223eSPekka Enberg static void kvm__emulate_io_out(struct kvm *self, uint16_t port, void *data, int size, uint32_t count)
2868d20223eSPekka Enberg {
2878d20223eSPekka Enberg 	fprintf(stderr, "%s port=%x, size=%d, count=%" PRIu32 "\n", __func__, port, size, count);
2888d20223eSPekka Enberg }
2898d20223eSPekka Enberg 
2908d20223eSPekka Enberg static void kvm__emulate_io_in(struct kvm *self, uint16_t port, void *data, int size, uint32_t count)
2918d20223eSPekka Enberg {
2928d20223eSPekka Enberg 	fprintf(stderr, "%s port=%x, size=%d, count=%" PRIu32 "\n", __func__, port, size, count);
2938d20223eSPekka Enberg }
2948d20223eSPekka Enberg 
2958d20223eSPekka Enberg static void kvm__emulate_io(struct kvm *self, uint16_t port, void *data, int direction, int size, uint32_t count)
2968d20223eSPekka Enberg {
2978d20223eSPekka Enberg 	if (direction == KVM_EXIT_IO_IN)
2988d20223eSPekka Enberg 		kvm__emulate_io_in(self, port, data, size, count);
2998d20223eSPekka Enberg 	else
3008d20223eSPekka Enberg 		kvm__emulate_io_out(self, port, data, size, count);
3018d20223eSPekka Enberg }
3028d20223eSPekka Enberg 
3034076b041SPekka Enberg int main(int argc, char *argv[])
3044076b041SPekka Enberg {
305caf44df2SPekka Enberg 	const char *kernel_filename;
306a2fe6199SPekka Enberg 	uint64_t kernel_start;
3074076b041SPekka Enberg 	struct kvm *kvm;
3084076b041SPekka Enberg 	int ret;
3094076b041SPekka Enberg 
310caf44df2SPekka Enberg 	if (argc < 2)
311caf44df2SPekka Enberg 		usage(argv);
312caf44df2SPekka Enberg 
313caf44df2SPekka Enberg 	kernel_filename = argv[1];
314caf44df2SPekka Enberg 
3154076b041SPekka Enberg 	kvm = kvm__init();
3164076b041SPekka Enberg 
317a2fe6199SPekka Enberg 	kernel_start = kvm__load_kernel(kvm, kernel_filename);
318a2fe6199SPekka Enberg 
319a2fe6199SPekka Enberg 	kvm__reset_vcpu(kvm, kernel_start);
320b8f6afcdSPekka Enberg 
3218d20223eSPekka Enberg 	for (;;) {
3222b0e3342SPekka Enberg 		kvm__run(kvm);
3232b0e3342SPekka Enberg 
3248d20223eSPekka Enberg 		switch (kvm->kvm_run->exit_reason) {
3258d20223eSPekka Enberg 		case KVM_EXIT_IO:
3268d20223eSPekka Enberg 			kvm__emulate_io(kvm,
3278d20223eSPekka Enberg 					kvm->kvm_run->io.port,
3288d20223eSPekka Enberg 					(uint8_t *)kvm->kvm_run + kvm->kvm_run->io.data_offset,
3298d20223eSPekka Enberg 					kvm->kvm_run->io.direction,
3308d20223eSPekka Enberg 					kvm->kvm_run->io.size,
3318d20223eSPekka Enberg 					kvm->kvm_run->io.count);
3328d20223eSPekka Enberg 			goto exit_kvm;
3338d20223eSPekka Enberg 			break;
3348d20223eSPekka Enberg 		default:
3358d20223eSPekka Enberg 			goto exit_kvm;
3368d20223eSPekka Enberg 		}
3378d20223eSPekka Enberg 	}
3388d20223eSPekka Enberg 
3398d20223eSPekka Enberg exit_kvm:
3401f9cff23SPekka Enberg 	fprintf(stderr, "KVM exit reason: %" PRIu32 " (\"%s\")\n",
3411f9cff23SPekka Enberg 		kvm->kvm_run->exit_reason, exit_reasons[kvm->kvm_run->exit_reason]);
3421f9cff23SPekka Enberg 
3437118d2caSPekka Enberg 	kvm__show_registers(kvm);
3446f10be05SPekka Enberg 	kvm__show_code(kvm);
3457118d2caSPekka Enberg 
346b8f6afcdSPekka Enberg 	return 0;
347b8f6afcdSPekka Enberg }
348