4 * Copyright IBM, Corp. 2008
8 * Anthony Liguori <aliguori@us.ibm.com>
9 * Glauber Costa <gcosta@redhat.com>
11 * This work is licensed under the terms of the GNU GPL, version 2 or later.
12 * See the COPYING file in the top-level directory.
16 #include <sys/types.h>
17 #include <sys/ioctl.h>
21 #include <linux/kvm.h>
23 #include "qemu-common.h"
24 #include "qemu/atomic.h"
25 #include "qemu/option.h"
26 #include "qemu/config-file.h"
27 #include "sysemu/sysemu.h"
29 #include "hw/pci/msi.h"
30 #include "exec/gdbstub.h"
31 #include "sysemu/kvm.h"
32 #include "qemu/bswap.h"
33 #include "exec/memory.h"
34 #include "exec/address-spaces.h"
35 #include "qemu/event_notifier.h"
37 /* This check must be after config-host.h is included */
39 #include <sys/eventfd.h>
42 #ifdef CONFIG_VALGRIND_H
43 #include <valgrind/memcheck.h>
46 /* KVM uses PAGE_SIZE in its definition of COALESCED_MMIO_MAX */
47 #define PAGE_SIZE TARGET_PAGE_SIZE
52 #define DPRINTF(fmt, ...) \
53 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
55 #define DPRINTF(fmt, ...) \
59 #define KVM_MSI_HASHTAB_SIZE 256
61 typedef struct KVMSlot
64 ram_addr_t memory_size;
70 typedef struct kvm_dirty_log KVMDirtyLog;
78 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
79 bool coalesced_flush_in_progress;
80 int broken_set_mem_region;
83 int robust_singlestep;
85 #ifdef KVM_CAP_SET_GUEST_DEBUG
86 struct kvm_sw_breakpoint_head kvm_sw_breakpoints;
92 /* The man page (and posix) say ioctl numbers are signed int, but
93 * they're not. Linux, glibc and *BSD all treat ioctl numbers as
94 * unsigned, and treating them as signed here can break things */
95 unsigned irq_set_ioctl;
96 #ifdef KVM_CAP_IRQ_ROUTING
97 struct kvm_irq_routing *irq_routes;
98 int nr_allocated_irq_routes;
99 uint32_t *used_gsi_bitmap;
100 unsigned int gsi_count;
101 QTAILQ_HEAD(msi_hashtab, KVMMSIRoute) msi_hashtab[KVM_MSI_HASHTAB_SIZE];
107 bool kvm_kernel_irqchip;
108 bool kvm_async_interrupts_allowed;
109 bool kvm_irqfds_allowed;
110 bool kvm_msi_via_irqfd_allowed;
111 bool kvm_gsi_routing_allowed;
114 static const KVMCapabilityInfo kvm_required_capabilites[] = {
115 KVM_CAP_INFO(USER_MEMORY),
116 KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS),
120 static KVMSlot *kvm_alloc_slot(KVMState *s)
124 for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
125 if (s->slots[i].memory_size == 0) {
130 fprintf(stderr, "%s: no free slot available\n", __func__);
134 static KVMSlot *kvm_lookup_matching_slot(KVMState *s,
140 for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
141 KVMSlot *mem = &s->slots[i];
143 if (start_addr == mem->start_addr &&
144 end_addr == mem->start_addr + mem->memory_size) {
153 * Find overlapping slot with lowest start address
155 static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s,
159 KVMSlot *found = NULL;
162 for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
163 KVMSlot *mem = &s->slots[i];
165 if (mem->memory_size == 0 ||
166 (found && found->start_addr < mem->start_addr)) {
170 if (end_addr > mem->start_addr &&
171 start_addr < mem->start_addr + mem->memory_size) {
179 int kvm_physical_memory_addr_from_host(KVMState *s, void *ram,
184 for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
185 KVMSlot *mem = &s->slots[i];
187 if (ram >= mem->ram && ram < mem->ram + mem->memory_size) {
188 *phys_addr = mem->start_addr + (ram - mem->ram);
196 static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot)
198 struct kvm_userspace_memory_region mem;
200 mem.slot = slot->slot;
201 mem.guest_phys_addr = slot->start_addr;
202 mem.memory_size = slot->memory_size;
203 mem.userspace_addr = (unsigned long)slot->ram;
204 mem.flags = slot->flags;
205 if (s->migration_log) {
206 mem.flags |= KVM_MEM_LOG_DIRTY_PAGES;
208 return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
211 static void kvm_reset_vcpu(void *opaque)
213 CPUState *cpu = opaque;
215 kvm_arch_reset_vcpu(cpu);
218 int kvm_init_vcpu(CPUState *cpu)
220 KVMState *s = kvm_state;
224 DPRINTF("kvm_init_vcpu\n");
226 ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, (void *)kvm_arch_vcpu_id(cpu));
228 DPRINTF("kvm_create_vcpu failed\n");
234 cpu->kvm_vcpu_dirty = true;
236 mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
239 DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n");
243 cpu->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
245 if (cpu->kvm_run == MAP_FAILED) {
247 DPRINTF("mmap'ing vcpu state failed\n");
251 if (s->coalesced_mmio && !s->coalesced_mmio_ring) {
252 s->coalesced_mmio_ring =
253 (void *)cpu->kvm_run + s->coalesced_mmio * PAGE_SIZE;
256 ret = kvm_arch_init_vcpu(cpu);
258 qemu_register_reset(kvm_reset_vcpu, cpu);
259 kvm_arch_reset_vcpu(cpu);
266 * dirty pages logging control
269 static int kvm_mem_flags(KVMState *s, bool log_dirty)
271 return log_dirty ? KVM_MEM_LOG_DIRTY_PAGES : 0;
274 static int kvm_slot_dirty_pages_log_change(KVMSlot *mem, bool log_dirty)
276 KVMState *s = kvm_state;
277 int flags, mask = KVM_MEM_LOG_DIRTY_PAGES;
280 old_flags = mem->flags;
282 flags = (mem->flags & ~mask) | kvm_mem_flags(s, log_dirty);
285 /* If nothing changed effectively, no need to issue ioctl */
286 if (s->migration_log) {
287 flags |= KVM_MEM_LOG_DIRTY_PAGES;
290 if (flags == old_flags) {
294 return kvm_set_user_memory_region(s, mem);
297 static int kvm_dirty_pages_log_change(hwaddr phys_addr,
298 ram_addr_t size, bool log_dirty)
300 KVMState *s = kvm_state;
301 KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size);
304 fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-"
305 TARGET_FMT_plx "\n", __func__, phys_addr,
306 (hwaddr)(phys_addr + size - 1));
309 return kvm_slot_dirty_pages_log_change(mem, log_dirty);
312 static void kvm_log_start(MemoryListener *listener,
313 MemoryRegionSection *section)
317 r = kvm_dirty_pages_log_change(section->offset_within_address_space,
318 section->size, true);
324 static void kvm_log_stop(MemoryListener *listener,
325 MemoryRegionSection *section)
329 r = kvm_dirty_pages_log_change(section->offset_within_address_space,
330 section->size, false);
336 static int kvm_set_migration_log(int enable)
338 KVMState *s = kvm_state;
342 s->migration_log = enable;
344 for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
347 if (!mem->memory_size) {
350 if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) {
353 err = kvm_set_user_memory_region(s, mem);
361 /* get kvm's dirty pages bitmap and update qemu's */
362 static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section,
363 unsigned long *bitmap)
366 unsigned long page_number, c;
368 unsigned int len = ((section->size / getpagesize()) + HOST_LONG_BITS - 1) / HOST_LONG_BITS;
369 unsigned long hpratio = getpagesize() / TARGET_PAGE_SIZE;
372 * bitmap-traveling is faster than memory-traveling (for addr...)
373 * especially when most of the memory is not dirty.
375 for (i = 0; i < len; i++) {
376 if (bitmap[i] != 0) {
377 c = leul_to_cpu(bitmap[i]);
381 page_number = (i * HOST_LONG_BITS + j) * hpratio;
382 addr1 = page_number * TARGET_PAGE_SIZE;
383 addr = section->offset_within_region + addr1;
384 memory_region_set_dirty(section->mr, addr,
385 TARGET_PAGE_SIZE * hpratio);
392 #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1))
395 * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space
396 * This function updates qemu's dirty bitmap using
397 * memory_region_set_dirty(). This means all bits are set
400 * @start_add: start of logged region.
401 * @end_addr: end of logged region.
403 static int kvm_physical_sync_dirty_bitmap(MemoryRegionSection *section)
405 KVMState *s = kvm_state;
406 unsigned long size, allocated_size = 0;
410 hwaddr start_addr = section->offset_within_address_space;
411 hwaddr end_addr = start_addr + section->size;
413 d.dirty_bitmap = NULL;
414 while (start_addr < end_addr) {
415 mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr);
420 /* XXX bad kernel interface alert
421 * For dirty bitmap, kernel allocates array of size aligned to
422 * bits-per-long. But for case when the kernel is 64bits and
423 * the userspace is 32bits, userspace can't align to the same
424 * bits-per-long, since sizeof(long) is different between kernel
425 * and user space. This way, userspace will provide buffer which
426 * may be 4 bytes less than the kernel will use, resulting in
427 * userspace memory corruption (which is not detectable by valgrind
428 * too, in most cases).
429 * So for now, let's align to 64 instead of HOST_LONG_BITS here, in
430 * a hope that sizeof(long) wont become >8 any time soon.
432 size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS),
433 /*HOST_LONG_BITS*/ 64) / 8;
434 if (!d.dirty_bitmap) {
435 d.dirty_bitmap = g_malloc(size);
436 } else if (size > allocated_size) {
437 d.dirty_bitmap = g_realloc(d.dirty_bitmap, size);
439 allocated_size = size;
440 memset(d.dirty_bitmap, 0, allocated_size);
444 if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) {
445 DPRINTF("ioctl failed %d\n", errno);
450 kvm_get_dirty_pages_log_range(section, d.dirty_bitmap);
451 start_addr = mem->start_addr + mem->memory_size;
453 g_free(d.dirty_bitmap);
458 static void kvm_coalesce_mmio_region(MemoryListener *listener,
459 MemoryRegionSection *secion,
460 hwaddr start, hwaddr size)
462 KVMState *s = kvm_state;
464 if (s->coalesced_mmio) {
465 struct kvm_coalesced_mmio_zone zone;
471 (void)kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone);
475 static void kvm_uncoalesce_mmio_region(MemoryListener *listener,
476 MemoryRegionSection *secion,
477 hwaddr start, hwaddr size)
479 KVMState *s = kvm_state;
481 if (s->coalesced_mmio) {
482 struct kvm_coalesced_mmio_zone zone;
488 (void)kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone);
492 int kvm_check_extension(KVMState *s, unsigned int extension)
496 ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension);
504 static int kvm_set_ioeventfd_mmio(int fd, uint32_t addr, uint32_t val,
505 bool assign, uint32_t size, bool datamatch)
508 struct kvm_ioeventfd iofd;
510 iofd.datamatch = datamatch ? val : 0;
516 if (!kvm_enabled()) {
521 iofd.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH;
524 iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
527 ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd);
536 static int kvm_set_ioeventfd_pio(int fd, uint16_t addr, uint16_t val,
537 bool assign, uint32_t size, bool datamatch)
539 struct kvm_ioeventfd kick = {
540 .datamatch = datamatch ? val : 0,
542 .flags = KVM_IOEVENTFD_FLAG_PIO,
547 if (!kvm_enabled()) {
551 kick.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH;
554 kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
556 r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
564 static int kvm_check_many_ioeventfds(void)
566 /* Userspace can use ioeventfd for io notification. This requires a host
567 * that supports eventfd(2) and an I/O thread; since eventfd does not
568 * support SIGIO it cannot interrupt the vcpu.
570 * Older kernels have a 6 device limit on the KVM io bus. Find out so we
571 * can avoid creating too many ioeventfds.
573 #if defined(CONFIG_EVENTFD)
576 for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) {
577 ioeventfds[i] = eventfd(0, EFD_CLOEXEC);
578 if (ioeventfds[i] < 0) {
581 ret = kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, true, 2, true);
583 close(ioeventfds[i]);
588 /* Decide whether many devices are supported or not */
589 ret = i == ARRAY_SIZE(ioeventfds);
592 kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, false, 2, true);
593 close(ioeventfds[i]);
601 static const KVMCapabilityInfo *
602 kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list)
605 if (!kvm_check_extension(s, list->value)) {
613 static void kvm_set_phys_mem(MemoryRegionSection *section, bool add)
615 KVMState *s = kvm_state;
618 MemoryRegion *mr = section->mr;
619 bool log_dirty = memory_region_is_logging(mr);
620 hwaddr start_addr = section->offset_within_address_space;
621 ram_addr_t size = section->size;
625 /* kvm works in page size chunks, but the function may be called
626 with sub-page size and unaligned start address. */
627 delta = TARGET_PAGE_ALIGN(size) - size;
633 size &= TARGET_PAGE_MASK;
634 if (!size || (start_addr & ~TARGET_PAGE_MASK)) {
638 if (!memory_region_is_ram(mr)) {
642 ram = memory_region_get_ram_ptr(mr) + section->offset_within_region + delta;
645 mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size);
650 if (add && start_addr >= mem->start_addr &&
651 (start_addr + size <= mem->start_addr + mem->memory_size) &&
652 (ram - start_addr == mem->ram - mem->start_addr)) {
653 /* The new slot fits into the existing one and comes with
654 * identical parameters - update flags and done. */
655 kvm_slot_dirty_pages_log_change(mem, log_dirty);
661 if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) {
662 kvm_physical_sync_dirty_bitmap(section);
665 /* unregister the overlapping slot */
666 mem->memory_size = 0;
667 err = kvm_set_user_memory_region(s, mem);
669 fprintf(stderr, "%s: error unregistering overlapping slot: %s\n",
670 __func__, strerror(-err));
674 /* Workaround for older KVM versions: we can't join slots, even not by
675 * unregistering the previous ones and then registering the larger
676 * slot. We have to maintain the existing fragmentation. Sigh.
678 * This workaround assumes that the new slot starts at the same
679 * address as the first existing one. If not or if some overlapping
680 * slot comes around later, we will fail (not seen in practice so far)
681 * - and actually require a recent KVM version. */
682 if (s->broken_set_mem_region &&
683 old.start_addr == start_addr && old.memory_size < size && add) {
684 mem = kvm_alloc_slot(s);
685 mem->memory_size = old.memory_size;
686 mem->start_addr = old.start_addr;
688 mem->flags = kvm_mem_flags(s, log_dirty);
690 err = kvm_set_user_memory_region(s, mem);
692 fprintf(stderr, "%s: error updating slot: %s\n", __func__,
697 start_addr += old.memory_size;
698 ram += old.memory_size;
699 size -= old.memory_size;
703 /* register prefix slot */
704 if (old.start_addr < start_addr) {
705 mem = kvm_alloc_slot(s);
706 mem->memory_size = start_addr - old.start_addr;
707 mem->start_addr = old.start_addr;
709 mem->flags = kvm_mem_flags(s, log_dirty);
711 err = kvm_set_user_memory_region(s, mem);
713 fprintf(stderr, "%s: error registering prefix slot: %s\n",
714 __func__, strerror(-err));
716 fprintf(stderr, "%s: This is probably because your kernel's " \
717 "PAGE_SIZE is too big. Please try to use 4k " \
718 "PAGE_SIZE!\n", __func__);
724 /* register suffix slot */
725 if (old.start_addr + old.memory_size > start_addr + size) {
726 ram_addr_t size_delta;
728 mem = kvm_alloc_slot(s);
729 mem->start_addr = start_addr + size;
730 size_delta = mem->start_addr - old.start_addr;
731 mem->memory_size = old.memory_size - size_delta;
732 mem->ram = old.ram + size_delta;
733 mem->flags = kvm_mem_flags(s, log_dirty);
735 err = kvm_set_user_memory_region(s, mem);
737 fprintf(stderr, "%s: error registering suffix slot: %s\n",
738 __func__, strerror(-err));
744 /* in case the KVM bug workaround already "consumed" the new slot */
751 mem = kvm_alloc_slot(s);
752 mem->memory_size = size;
753 mem->start_addr = start_addr;
755 mem->flags = kvm_mem_flags(s, log_dirty);
757 err = kvm_set_user_memory_region(s, mem);
759 fprintf(stderr, "%s: error registering slot: %s\n", __func__,
765 static void kvm_region_add(MemoryListener *listener,
766 MemoryRegionSection *section)
768 kvm_set_phys_mem(section, true);
771 static void kvm_region_del(MemoryListener *listener,
772 MemoryRegionSection *section)
774 kvm_set_phys_mem(section, false);
777 static void kvm_log_sync(MemoryListener *listener,
778 MemoryRegionSection *section)
782 r = kvm_physical_sync_dirty_bitmap(section);
788 static void kvm_log_global_start(struct MemoryListener *listener)
792 r = kvm_set_migration_log(1);
796 static void kvm_log_global_stop(struct MemoryListener *listener)
800 r = kvm_set_migration_log(0);
804 static void kvm_mem_ioeventfd_add(MemoryListener *listener,
805 MemoryRegionSection *section,
806 bool match_data, uint64_t data,
809 int fd = event_notifier_get_fd(e);
812 r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space,
813 data, true, section->size, match_data);
819 static void kvm_mem_ioeventfd_del(MemoryListener *listener,
820 MemoryRegionSection *section,
821 bool match_data, uint64_t data,
824 int fd = event_notifier_get_fd(e);
827 r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space,
828 data, false, section->size, match_data);
834 static void kvm_io_ioeventfd_add(MemoryListener *listener,
835 MemoryRegionSection *section,
836 bool match_data, uint64_t data,
839 int fd = event_notifier_get_fd(e);
842 r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space,
843 data, true, section->size, match_data);
849 static void kvm_io_ioeventfd_del(MemoryListener *listener,
850 MemoryRegionSection *section,
851 bool match_data, uint64_t data,
855 int fd = event_notifier_get_fd(e);
858 r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space,
859 data, false, section->size, match_data);
865 static MemoryListener kvm_memory_listener = {
866 .region_add = kvm_region_add,
867 .region_del = kvm_region_del,
868 .log_start = kvm_log_start,
869 .log_stop = kvm_log_stop,
870 .log_sync = kvm_log_sync,
871 .log_global_start = kvm_log_global_start,
872 .log_global_stop = kvm_log_global_stop,
873 .eventfd_add = kvm_mem_ioeventfd_add,
874 .eventfd_del = kvm_mem_ioeventfd_del,
875 .coalesced_mmio_add = kvm_coalesce_mmio_region,
876 .coalesced_mmio_del = kvm_uncoalesce_mmio_region,
880 static MemoryListener kvm_io_listener = {
881 .eventfd_add = kvm_io_ioeventfd_add,
882 .eventfd_del = kvm_io_ioeventfd_del,
886 static void kvm_handle_interrupt(CPUState *cpu, int mask)
888 cpu->interrupt_request |= mask;
890 if (!qemu_cpu_is_self(cpu)) {
895 int kvm_set_irq(KVMState *s, int irq, int level)
897 struct kvm_irq_level event;
900 assert(kvm_async_interrupts_enabled());
904 ret = kvm_vm_ioctl(s, s->irq_set_ioctl, &event);
906 perror("kvm_set_irq");
910 return (s->irq_set_ioctl == KVM_IRQ_LINE) ? 1 : event.status;
913 #ifdef KVM_CAP_IRQ_ROUTING
914 typedef struct KVMMSIRoute {
915 struct kvm_irq_routing_entry kroute;
916 QTAILQ_ENTRY(KVMMSIRoute) entry;
919 static void set_gsi(KVMState *s, unsigned int gsi)
921 s->used_gsi_bitmap[gsi / 32] |= 1U << (gsi % 32);
924 static void clear_gsi(KVMState *s, unsigned int gsi)
926 s->used_gsi_bitmap[gsi / 32] &= ~(1U << (gsi % 32));
929 static void kvm_init_irq_routing(KVMState *s)
933 gsi_count = kvm_check_extension(s, KVM_CAP_IRQ_ROUTING);
935 unsigned int gsi_bits, i;
937 /* Round up so we can search ints using ffs */
938 gsi_bits = ALIGN(gsi_count, 32);
939 s->used_gsi_bitmap = g_malloc0(gsi_bits / 8);
940 s->gsi_count = gsi_count;
942 /* Mark any over-allocated bits as already in use */
943 for (i = gsi_count; i < gsi_bits; i++) {
948 s->irq_routes = g_malloc0(sizeof(*s->irq_routes));
949 s->nr_allocated_irq_routes = 0;
951 if (!s->direct_msi) {
952 for (i = 0; i < KVM_MSI_HASHTAB_SIZE; i++) {
953 QTAILQ_INIT(&s->msi_hashtab[i]);
957 kvm_arch_init_irq_routing(s);
960 static void kvm_irqchip_commit_routes(KVMState *s)
964 s->irq_routes->flags = 0;
965 ret = kvm_vm_ioctl(s, KVM_SET_GSI_ROUTING, s->irq_routes);
969 static void kvm_add_routing_entry(KVMState *s,
970 struct kvm_irq_routing_entry *entry)
972 struct kvm_irq_routing_entry *new;
975 if (s->irq_routes->nr == s->nr_allocated_irq_routes) {
976 n = s->nr_allocated_irq_routes * 2;
980 size = sizeof(struct kvm_irq_routing);
981 size += n * sizeof(*new);
982 s->irq_routes = g_realloc(s->irq_routes, size);
983 s->nr_allocated_irq_routes = n;
985 n = s->irq_routes->nr++;
986 new = &s->irq_routes->entries[n];
987 memset(new, 0, sizeof(*new));
988 new->gsi = entry->gsi;
989 new->type = entry->type;
990 new->flags = entry->flags;
993 set_gsi(s, entry->gsi);
995 kvm_irqchip_commit_routes(s);
998 static int kvm_update_routing_entry(KVMState *s,
999 struct kvm_irq_routing_entry *new_entry)
1001 struct kvm_irq_routing_entry *entry;
1004 for (n = 0; n < s->irq_routes->nr; n++) {
1005 entry = &s->irq_routes->entries[n];
1006 if (entry->gsi != new_entry->gsi) {
1010 entry->type = new_entry->type;
1011 entry->flags = new_entry->flags;
1012 entry->u = new_entry->u;
1014 kvm_irqchip_commit_routes(s);
1022 void kvm_irqchip_add_irq_route(KVMState *s, int irq, int irqchip, int pin)
1024 struct kvm_irq_routing_entry e;
1026 assert(pin < s->gsi_count);
1029 e.type = KVM_IRQ_ROUTING_IRQCHIP;
1031 e.u.irqchip.irqchip = irqchip;
1032 e.u.irqchip.pin = pin;
1033 kvm_add_routing_entry(s, &e);
1036 void kvm_irqchip_release_virq(KVMState *s, int virq)
1038 struct kvm_irq_routing_entry *e;
1041 for (i = 0; i < s->irq_routes->nr; i++) {
1042 e = &s->irq_routes->entries[i];
1043 if (e->gsi == virq) {
1044 s->irq_routes->nr--;
1045 *e = s->irq_routes->entries[s->irq_routes->nr];
1051 static unsigned int kvm_hash_msi(uint32_t data)
1053 /* This is optimized for IA32 MSI layout. However, no other arch shall
1054 * repeat the mistake of not providing a direct MSI injection API. */
1058 static void kvm_flush_dynamic_msi_routes(KVMState *s)
1060 KVMMSIRoute *route, *next;
1063 for (hash = 0; hash < KVM_MSI_HASHTAB_SIZE; hash++) {
1064 QTAILQ_FOREACH_SAFE(route, &s->msi_hashtab[hash], entry, next) {
1065 kvm_irqchip_release_virq(s, route->kroute.gsi);
1066 QTAILQ_REMOVE(&s->msi_hashtab[hash], route, entry);
1072 static int kvm_irqchip_get_virq(KVMState *s)
1074 uint32_t *word = s->used_gsi_bitmap;
1075 int max_words = ALIGN(s->gsi_count, 32) / 32;
1080 /* Return the lowest unused GSI in the bitmap */
1081 for (i = 0; i < max_words; i++) {
1082 bit = ffs(~word[i]);
1087 return bit - 1 + i * 32;
1089 if (!s->direct_msi && retry) {
1091 kvm_flush_dynamic_msi_routes(s);
1098 static KVMMSIRoute *kvm_lookup_msi_route(KVMState *s, MSIMessage msg)
1100 unsigned int hash = kvm_hash_msi(msg.data);
1103 QTAILQ_FOREACH(route, &s->msi_hashtab[hash], entry) {
1104 if (route->kroute.u.msi.address_lo == (uint32_t)msg.address &&
1105 route->kroute.u.msi.address_hi == (msg.address >> 32) &&
1106 route->kroute.u.msi.data == msg.data) {
1113 int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
1118 if (s->direct_msi) {
1119 msi.address_lo = (uint32_t)msg.address;
1120 msi.address_hi = msg.address >> 32;
1121 msi.data = msg.data;
1123 memset(msi.pad, 0, sizeof(msi.pad));
1125 return kvm_vm_ioctl(s, KVM_SIGNAL_MSI, &msi);
1128 route = kvm_lookup_msi_route(s, msg);
1132 virq = kvm_irqchip_get_virq(s);
1137 route = g_malloc(sizeof(KVMMSIRoute));
1138 route->kroute.gsi = virq;
1139 route->kroute.type = KVM_IRQ_ROUTING_MSI;
1140 route->kroute.flags = 0;
1141 route->kroute.u.msi.address_lo = (uint32_t)msg.address;
1142 route->kroute.u.msi.address_hi = msg.address >> 32;
1143 route->kroute.u.msi.data = msg.data;
1145 kvm_add_routing_entry(s, &route->kroute);
1147 QTAILQ_INSERT_TAIL(&s->msi_hashtab[kvm_hash_msi(msg.data)], route,
1151 assert(route->kroute.type == KVM_IRQ_ROUTING_MSI);
1153 return kvm_set_irq(s, route->kroute.gsi, 1);
1156 int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
1158 struct kvm_irq_routing_entry kroute;
1161 if (!kvm_gsi_routing_enabled()) {
1165 virq = kvm_irqchip_get_virq(s);
1171 kroute.type = KVM_IRQ_ROUTING_MSI;
1173 kroute.u.msi.address_lo = (uint32_t)msg.address;
1174 kroute.u.msi.address_hi = msg.address >> 32;
1175 kroute.u.msi.data = msg.data;
1177 kvm_add_routing_entry(s, &kroute);
1182 int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg)
1184 struct kvm_irq_routing_entry kroute;
1186 if (!kvm_irqchip_in_kernel()) {
1191 kroute.type = KVM_IRQ_ROUTING_MSI;
1193 kroute.u.msi.address_lo = (uint32_t)msg.address;
1194 kroute.u.msi.address_hi = msg.address >> 32;
1195 kroute.u.msi.data = msg.data;
1197 return kvm_update_routing_entry(s, &kroute);
1200 static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int virq, bool assign)
1202 struct kvm_irqfd irqfd = {
1205 .flags = assign ? 0 : KVM_IRQFD_FLAG_DEASSIGN,
1208 if (!kvm_irqfds_enabled()) {
1212 return kvm_vm_ioctl(s, KVM_IRQFD, &irqfd);
1215 #else /* !KVM_CAP_IRQ_ROUTING */
1217 static void kvm_init_irq_routing(KVMState *s)
1221 void kvm_irqchip_release_virq(KVMState *s, int virq)
1225 int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
1230 int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
1235 static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int virq, bool assign)
1240 int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg)
1244 #endif /* !KVM_CAP_IRQ_ROUTING */
1246 int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, int virq)
1248 return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n), virq, true);
1251 int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq)
1253 return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n), virq, false);
1256 static int kvm_irqchip_create(KVMState *s)
1258 QemuOptsList *list = qemu_find_opts("machine");
1261 if (QTAILQ_EMPTY(&list->head) ||
1262 !qemu_opt_get_bool(QTAILQ_FIRST(&list->head),
1263 "kernel_irqchip", true) ||
1264 !kvm_check_extension(s, KVM_CAP_IRQCHIP)) {
1268 ret = kvm_vm_ioctl(s, KVM_CREATE_IRQCHIP);
1270 fprintf(stderr, "Create kernel irqchip failed\n");
1274 kvm_kernel_irqchip = true;
1275 /* If we have an in-kernel IRQ chip then we must have asynchronous
1276 * interrupt delivery (though the reverse is not necessarily true)
1278 kvm_async_interrupts_allowed = true;
1280 kvm_init_irq_routing(s);
1285 static int kvm_max_vcpus(KVMState *s)
1289 /* Find number of supported CPUs using the recommended
1290 * procedure from the kernel API documentation to cope with
1291 * older kernels that may be missing capabilities.
1293 ret = kvm_check_extension(s, KVM_CAP_MAX_VCPUS);
1297 ret = kvm_check_extension(s, KVM_CAP_NR_VCPUS);
1307 static const char upgrade_note[] =
1308 "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n"
1309 "(see http://sourceforge.net/projects/kvm).\n";
1311 const KVMCapabilityInfo *missing_cap;
1316 s = g_malloc0(sizeof(KVMState));
1319 * On systems where the kernel can support different base page
1320 * sizes, host page size may be different from TARGET_PAGE_SIZE,
1321 * even with KVM. TARGET_PAGE_SIZE is assumed to be the minimum
1322 * page size for the system though.
1324 assert(TARGET_PAGE_SIZE <= getpagesize());
1326 #ifdef KVM_CAP_SET_GUEST_DEBUG
1327 QTAILQ_INIT(&s->kvm_sw_breakpoints);
1329 for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
1330 s->slots[i].slot = i;
1333 s->fd = qemu_open("/dev/kvm", O_RDWR);
1335 fprintf(stderr, "Could not access KVM kernel module: %m\n");
1340 ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0);
1341 if (ret < KVM_API_VERSION) {
1345 fprintf(stderr, "kvm version too old\n");
1349 if (ret > KVM_API_VERSION) {
1351 fprintf(stderr, "kvm version not supported\n");
1355 max_vcpus = kvm_max_vcpus(s);
1356 if (smp_cpus > max_vcpus) {
1358 fprintf(stderr, "Number of SMP cpus requested (%d) exceeds max cpus "
1359 "supported by KVM (%d)\n", smp_cpus, max_vcpus);
1363 s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0);
1366 fprintf(stderr, "Please add the 'switch_amode' kernel parameter to "
1367 "your host kernel command line\n");
1373 missing_cap = kvm_check_extension_list(s, kvm_required_capabilites);
1376 kvm_check_extension_list(s, kvm_arch_required_capabilities);
1380 fprintf(stderr, "kvm does not support %s\n%s",
1381 missing_cap->name, upgrade_note);
1385 s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO);
1387 s->broken_set_mem_region = 1;
1388 ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS);
1390 s->broken_set_mem_region = 0;
1393 #ifdef KVM_CAP_VCPU_EVENTS
1394 s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS);
1397 s->robust_singlestep =
1398 kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP);
1400 #ifdef KVM_CAP_DEBUGREGS
1401 s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS);
1404 #ifdef KVM_CAP_XSAVE
1405 s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE);
1409 s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS);
1412 #ifdef KVM_CAP_PIT_STATE2
1413 s->pit_state2 = kvm_check_extension(s, KVM_CAP_PIT_STATE2);
1416 #ifdef KVM_CAP_IRQ_ROUTING
1417 s->direct_msi = (kvm_check_extension(s, KVM_CAP_SIGNAL_MSI) > 0);
1420 s->intx_set_mask = kvm_check_extension(s, KVM_CAP_PCI_2_3);
1422 s->irq_set_ioctl = KVM_IRQ_LINE;
1423 if (kvm_check_extension(s, KVM_CAP_IRQ_INJECT_STATUS)) {
1424 s->irq_set_ioctl = KVM_IRQ_LINE_STATUS;
1427 ret = kvm_arch_init(s);
1432 ret = kvm_irqchip_create(s);
1438 memory_listener_register(&kvm_memory_listener, &address_space_memory);
1439 memory_listener_register(&kvm_io_listener, &address_space_io);
1441 s->many_ioeventfds = kvm_check_many_ioeventfds();
1443 cpu_interrupt_handler = kvm_handle_interrupt;
1459 static void kvm_handle_io(uint16_t port, void *data, int direction, int size,
1463 uint8_t *ptr = data;
1465 for (i = 0; i < count; i++) {
1466 if (direction == KVM_EXIT_IO_IN) {
1469 stb_p(ptr, cpu_inb(port));
1472 stw_p(ptr, cpu_inw(port));
1475 stl_p(ptr, cpu_inl(port));
1481 cpu_outb(port, ldub_p(ptr));
1484 cpu_outw(port, lduw_p(ptr));
1487 cpu_outl(port, ldl_p(ptr));
1496 static int kvm_handle_internal_error(CPUArchState *env, struct kvm_run *run)
1498 CPUState *cpu = ENV_GET_CPU(env);
1500 fprintf(stderr, "KVM internal error.");
1501 if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) {
1504 fprintf(stderr, " Suberror: %d\n", run->internal.suberror);
1505 for (i = 0; i < run->internal.ndata; ++i) {
1506 fprintf(stderr, "extra data[%d]: %"PRIx64"\n",
1507 i, (uint64_t)run->internal.data[i]);
1510 fprintf(stderr, "\n");
1512 if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) {
1513 fprintf(stderr, "emulation failure\n");
1514 if (!kvm_arch_stop_on_emulation_error(cpu)) {
1515 cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE);
1516 return EXCP_INTERRUPT;
1519 /* FIXME: Should trigger a qmp message to let management know
1520 * something went wrong.
1525 void kvm_flush_coalesced_mmio_buffer(void)
1527 KVMState *s = kvm_state;
1529 if (s->coalesced_flush_in_progress) {
1533 s->coalesced_flush_in_progress = true;
1535 if (s->coalesced_mmio_ring) {
1536 struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring;
1537 while (ring->first != ring->last) {
1538 struct kvm_coalesced_mmio *ent;
1540 ent = &ring->coalesced_mmio[ring->first];
1542 cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len);
1544 ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX;
1548 s->coalesced_flush_in_progress = false;
1551 static void do_kvm_cpu_synchronize_state(void *arg)
1553 CPUState *cpu = arg;
1555 if (!cpu->kvm_vcpu_dirty) {
1556 kvm_arch_get_registers(cpu);
1557 cpu->kvm_vcpu_dirty = true;
1561 void kvm_cpu_synchronize_state(CPUArchState *env)
1563 CPUState *cpu = ENV_GET_CPU(env);
1565 if (!cpu->kvm_vcpu_dirty) {
1566 run_on_cpu(cpu, do_kvm_cpu_synchronize_state, cpu);
1570 void kvm_cpu_synchronize_post_reset(CPUState *cpu)
1572 kvm_arch_put_registers(cpu, KVM_PUT_RESET_STATE);
1573 cpu->kvm_vcpu_dirty = false;
1576 void kvm_cpu_synchronize_post_init(CPUState *cpu)
1578 kvm_arch_put_registers(cpu, KVM_PUT_FULL_STATE);
1579 cpu->kvm_vcpu_dirty = false;
1582 int kvm_cpu_exec(CPUArchState *env)
1584 CPUState *cpu = ENV_GET_CPU(env);
1585 struct kvm_run *run = cpu->kvm_run;
1588 DPRINTF("kvm_cpu_exec()\n");
1590 if (kvm_arch_process_async_events(cpu)) {
1591 cpu->exit_request = 0;
1596 if (cpu->kvm_vcpu_dirty) {
1597 kvm_arch_put_registers(cpu, KVM_PUT_RUNTIME_STATE);
1598 cpu->kvm_vcpu_dirty = false;
1601 kvm_arch_pre_run(cpu, run);
1602 if (cpu->exit_request) {
1603 DPRINTF("interrupt exit requested\n");
1605 * KVM requires us to reenter the kernel after IO exits to complete
1606 * instruction emulation. This self-signal will ensure that we
1609 qemu_cpu_kick_self();
1611 qemu_mutex_unlock_iothread();
1613 run_ret = kvm_vcpu_ioctl(cpu, KVM_RUN, 0);
1615 qemu_mutex_lock_iothread();
1616 kvm_arch_post_run(cpu, run);
1619 if (run_ret == -EINTR || run_ret == -EAGAIN) {
1620 DPRINTF("io window exit\n");
1621 ret = EXCP_INTERRUPT;
1624 fprintf(stderr, "error: kvm run failed %s\n",
1625 strerror(-run_ret));
1629 switch (run->exit_reason) {
1631 DPRINTF("handle_io\n");
1632 kvm_handle_io(run->io.port,
1633 (uint8_t *)run + run->io.data_offset,
1640 DPRINTF("handle_mmio\n");
1641 cpu_physical_memory_rw(run->mmio.phys_addr,
1644 run->mmio.is_write);
1647 case KVM_EXIT_IRQ_WINDOW_OPEN:
1648 DPRINTF("irq_window_open\n");
1649 ret = EXCP_INTERRUPT;
1651 case KVM_EXIT_SHUTDOWN:
1652 DPRINTF("shutdown\n");
1653 qemu_system_reset_request();
1654 ret = EXCP_INTERRUPT;
1656 case KVM_EXIT_UNKNOWN:
1657 fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n",
1658 (uint64_t)run->hw.hardware_exit_reason);
1661 case KVM_EXIT_INTERNAL_ERROR:
1662 ret = kvm_handle_internal_error(env, run);
1665 DPRINTF("kvm_arch_handle_exit\n");
1666 ret = kvm_arch_handle_exit(cpu, run);
1672 cpu_dump_state(env, stderr, fprintf, CPU_DUMP_CODE);
1673 vm_stop(RUN_STATE_INTERNAL_ERROR);
1676 cpu->exit_request = 0;
1680 int kvm_ioctl(KVMState *s, int type, ...)
1687 arg = va_arg(ap, void *);
1690 ret = ioctl(s->fd, type, arg);
1697 int kvm_vm_ioctl(KVMState *s, int type, ...)
1704 arg = va_arg(ap, void *);
1707 ret = ioctl(s->vmfd, type, arg);
1714 int kvm_vcpu_ioctl(CPUState *cpu, int type, ...)
1721 arg = va_arg(ap, void *);
1724 ret = ioctl(cpu->kvm_fd, type, arg);
1731 int kvm_has_sync_mmu(void)
1733 return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU);
1736 int kvm_has_vcpu_events(void)
1738 return kvm_state->vcpu_events;
1741 int kvm_has_robust_singlestep(void)
1743 return kvm_state->robust_singlestep;
1746 int kvm_has_debugregs(void)
1748 return kvm_state->debugregs;
1751 int kvm_has_xsave(void)
1753 return kvm_state->xsave;
1756 int kvm_has_xcrs(void)
1758 return kvm_state->xcrs;
1761 int kvm_has_pit_state2(void)
1763 return kvm_state->pit_state2;
1766 int kvm_has_many_ioeventfds(void)
1768 if (!kvm_enabled()) {
1771 return kvm_state->many_ioeventfds;
1774 int kvm_has_gsi_routing(void)
1776 #ifdef KVM_CAP_IRQ_ROUTING
1777 return kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING);
1783 int kvm_has_intx_set_mask(void)
1785 return kvm_state->intx_set_mask;
1788 void *kvm_vmalloc(ram_addr_t size)
1793 mem = kvm_arch_vmalloc(size);
1798 return qemu_vmalloc(size);
1801 void kvm_setup_guest_memory(void *start, size_t size)
1803 #ifdef CONFIG_VALGRIND_H
1804 VALGRIND_MAKE_MEM_DEFINED(start, size);
1806 if (!kvm_has_sync_mmu()) {
1807 int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK);
1810 perror("qemu_madvise");
1812 "Need MADV_DONTFORK in absence of synchronous KVM MMU\n");
1818 #ifdef KVM_CAP_SET_GUEST_DEBUG
1819 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *cpu,
1822 struct kvm_sw_breakpoint *bp;
1824 QTAILQ_FOREACH(bp, &cpu->kvm_state->kvm_sw_breakpoints, entry) {
1832 int kvm_sw_breakpoints_active(CPUState *cpu)
1834 return !QTAILQ_EMPTY(&cpu->kvm_state->kvm_sw_breakpoints);
1837 struct kvm_set_guest_debug_data {
1838 struct kvm_guest_debug dbg;
1843 static void kvm_invoke_set_guest_debug(void *data)
1845 struct kvm_set_guest_debug_data *dbg_data = data;
1847 dbg_data->err = kvm_vcpu_ioctl(dbg_data->cpu, KVM_SET_GUEST_DEBUG,
1851 int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap)
1853 CPUState *cpu = ENV_GET_CPU(env);
1854 struct kvm_set_guest_debug_data data;
1856 data.dbg.control = reinject_trap;
1858 if (env->singlestep_enabled) {
1859 data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP;
1861 kvm_arch_update_guest_debug(cpu, &data.dbg);
1864 run_on_cpu(cpu, kvm_invoke_set_guest_debug, &data);
1868 int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr,
1869 target_ulong len, int type)
1871 CPUState *current_cpu = ENV_GET_CPU(current_env);
1872 struct kvm_sw_breakpoint *bp;
1876 if (type == GDB_BREAKPOINT_SW) {
1877 bp = kvm_find_sw_breakpoint(current_cpu, addr);
1883 bp = g_malloc(sizeof(struct kvm_sw_breakpoint));
1890 err = kvm_arch_insert_sw_breakpoint(current_cpu, bp);
1896 QTAILQ_INSERT_HEAD(¤t_cpu->kvm_state->kvm_sw_breakpoints,
1899 err = kvm_arch_insert_hw_breakpoint(addr, len, type);
1905 for (env = first_cpu; env != NULL; env = env->next_cpu) {
1906 err = kvm_update_guest_debug(env, 0);
1914 int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr,
1915 target_ulong len, int type)
1917 CPUState *current_cpu = ENV_GET_CPU(current_env);
1918 struct kvm_sw_breakpoint *bp;
1922 if (type == GDB_BREAKPOINT_SW) {
1923 bp = kvm_find_sw_breakpoint(current_cpu, addr);
1928 if (bp->use_count > 1) {
1933 err = kvm_arch_remove_sw_breakpoint(current_cpu, bp);
1938 QTAILQ_REMOVE(¤t_cpu->kvm_state->kvm_sw_breakpoints, bp, entry);
1941 err = kvm_arch_remove_hw_breakpoint(addr, len, type);
1947 for (env = first_cpu; env != NULL; env = env->next_cpu) {
1948 err = kvm_update_guest_debug(env, 0);
1956 void kvm_remove_all_breakpoints(CPUArchState *current_env)
1958 CPUState *current_cpu = ENV_GET_CPU(current_env);
1959 struct kvm_sw_breakpoint *bp, *next;
1960 KVMState *s = current_cpu->kvm_state;
1964 QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) {
1965 if (kvm_arch_remove_sw_breakpoint(current_cpu, bp) != 0) {
1966 /* Try harder to find a CPU that currently sees the breakpoint. */
1967 for (env = first_cpu; env != NULL; env = env->next_cpu) {
1968 cpu = ENV_GET_CPU(env);
1969 if (kvm_arch_remove_sw_breakpoint(cpu, bp) == 0) {
1974 QTAILQ_REMOVE(&s->kvm_sw_breakpoints, bp, entry);
1977 kvm_arch_remove_all_hw_breakpoints();
1979 for (env = first_cpu; env != NULL; env = env->next_cpu) {
1980 kvm_update_guest_debug(env, 0);
1984 #else /* !KVM_CAP_SET_GUEST_DEBUG */
1986 int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap)
1991 int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr,
1992 target_ulong len, int type)
1997 int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr,
1998 target_ulong len, int type)
2003 void kvm_remove_all_breakpoints(CPUArchState *current_env)
2006 #endif /* !KVM_CAP_SET_GUEST_DEBUG */
2008 int kvm_set_signal_mask(CPUArchState *env, const sigset_t *sigset)
2010 CPUState *cpu = ENV_GET_CPU(env);
2011 struct kvm_signal_mask *sigmask;
2015 return kvm_vcpu_ioctl(cpu, KVM_SET_SIGNAL_MASK, NULL);
2018 sigmask = g_malloc(sizeof(*sigmask) + sizeof(*sigset));
2021 memcpy(sigmask->sigset, sigset, sizeof(*sigset));
2022 r = kvm_vcpu_ioctl(cpu, KVM_SET_SIGNAL_MASK, sigmask);
2027 int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
2029 return kvm_arch_on_sigbus_vcpu(cpu, code, addr);
2032 int kvm_on_sigbus(int code, void *addr)
2034 return kvm_arch_on_sigbus(code, addr);