]>
Commit | Line | Data |
---|---|---|
05330448 AL |
1 | /* |
2 | * QEMU KVM support | |
3 | * | |
4 | * Copyright IBM, Corp. 2008 | |
5832d1f2 | 5 | * Red Hat, Inc. 2008 |
05330448 AL |
6 | * |
7 | * Authors: | |
8 | * Anthony Liguori <aliguori@us.ibm.com> | |
5832d1f2 | 9 | * Glauber Costa <gcosta@redhat.com> |
05330448 AL |
10 | * |
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. | |
13 | * | |
14 | */ | |
15 | ||
16 | #include <sys/types.h> | |
17 | #include <sys/ioctl.h> | |
18 | #include <sys/mman.h> | |
984b5181 | 19 | #include <stdarg.h> |
05330448 AL |
20 | |
21 | #include <linux/kvm.h> | |
22 | ||
23 | #include "qemu-common.h" | |
1de7afc9 PB |
24 | #include "qemu/atomic.h" |
25 | #include "qemu/option.h" | |
26 | #include "qemu/config-file.h" | |
9c17d615 | 27 | #include "sysemu/sysemu.h" |
782c3f29 | 28 | #include "sysemu/accel.h" |
d33a1810 | 29 | #include "hw/hw.h" |
a2cb15b0 | 30 | #include "hw/pci/msi.h" |
d426d9fb | 31 | #include "hw/s390x/adapter.h" |
022c62cb | 32 | #include "exec/gdbstub.h" |
9c17d615 | 33 | #include "sysemu/kvm.h" |
1de7afc9 | 34 | #include "qemu/bswap.h" |
022c62cb | 35 | #include "exec/memory.h" |
747afd5b | 36 | #include "exec/ram_addr.h" |
022c62cb | 37 | #include "exec/address-spaces.h" |
1de7afc9 | 38 | #include "qemu/event_notifier.h" |
9c775729 | 39 | #include "trace.h" |
05330448 | 40 | |
135a129a AK |
41 | #include "hw/boards.h" |
42 | ||
d2f2b8a7 SH |
43 | /* This check must be after config-host.h is included */ |
44 | #ifdef CONFIG_EVENTFD | |
45 | #include <sys/eventfd.h> | |
46 | #endif | |
47 | ||
93148aa5 | 48 | /* KVM uses PAGE_SIZE in its definition of COALESCED_MMIO_MAX */ |
f65ed4c1 AL |
49 | #define PAGE_SIZE TARGET_PAGE_SIZE |
50 | ||
05330448 AL |
51 | //#define DEBUG_KVM |
52 | ||
53 | #ifdef DEBUG_KVM | |
8c0d577e | 54 | #define DPRINTF(fmt, ...) \ |
05330448 AL |
55 | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
56 | #else | |
8c0d577e | 57 | #define DPRINTF(fmt, ...) \ |
05330448 AL |
58 | do { } while (0) |
59 | #endif | |
60 | ||
04fa27f5 JK |
61 | #define KVM_MSI_HASHTAB_SIZE 256 |
62 | ||
34fc643f AL |
63 | typedef struct KVMSlot |
64 | { | |
a8170e5e | 65 | hwaddr start_addr; |
c227f099 | 66 | ram_addr_t memory_size; |
9f213ed9 | 67 | void *ram; |
34fc643f AL |
68 | int slot; |
69 | int flags; | |
70 | } KVMSlot; | |
05330448 | 71 | |
5832d1f2 AL |
72 | typedef struct kvm_dirty_log KVMDirtyLog; |
73 | ||
9d1c35df | 74 | struct KVMState |
05330448 | 75 | { |
fc02086b EH |
76 | AccelState parent_obj; |
77 | ||
fb541ca5 AW |
78 | KVMSlot *slots; |
79 | int nr_slots; | |
05330448 AL |
80 | int fd; |
81 | int vmfd; | |
f65ed4c1 | 82 | int coalesced_mmio; |
62a2744c | 83 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
1cae88b9 | 84 | bool coalesced_flush_in_progress; |
e69917e2 | 85 | int broken_set_mem_region; |
4495d6a7 | 86 | int migration_log; |
a0fb002c | 87 | int vcpu_events; |
b0b1d690 | 88 | int robust_singlestep; |
ff44f1a3 | 89 | int debugregs; |
e22a25c9 AL |
90 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
91 | struct kvm_sw_breakpoint_head kvm_sw_breakpoints; | |
92 | #endif | |
8a7c7393 | 93 | int pit_state2; |
f1665b21 | 94 | int xsave, xcrs; |
d2f2b8a7 | 95 | int many_ioeventfds; |
3ab73842 | 96 | int intx_set_mask; |
92e4b519 DG |
97 | /* The man page (and posix) say ioctl numbers are signed int, but |
98 | * they're not. Linux, glibc and *BSD all treat ioctl numbers as | |
99 | * unsigned, and treating them as signed here can break things */ | |
e333cd69 | 100 | unsigned irq_set_ioctl; |
aed6efb9 | 101 | unsigned int sigmask_len; |
84b058d7 JK |
102 | #ifdef KVM_CAP_IRQ_ROUTING |
103 | struct kvm_irq_routing *irq_routes; | |
104 | int nr_allocated_irq_routes; | |
105 | uint32_t *used_gsi_bitmap; | |
4e2e4e63 | 106 | unsigned int gsi_count; |
04fa27f5 | 107 | QTAILQ_HEAD(msi_hashtab, KVMMSIRoute) msi_hashtab[KVM_MSI_HASHTAB_SIZE]; |
4a3adebb | 108 | bool direct_msi; |
84b058d7 | 109 | #endif |
9d1c35df | 110 | }; |
05330448 | 111 | |
782c3f29 EH |
112 | #define TYPE_KVM_ACCEL ACCEL_CLASS_NAME("kvm") |
113 | ||
fc02086b EH |
114 | #define KVM_STATE(obj) \ |
115 | OBJECT_CHECK(KVMState, (obj), TYPE_KVM_ACCEL) | |
116 | ||
6a7af8cb | 117 | KVMState *kvm_state; |
3d4b2649 | 118 | bool kvm_kernel_irqchip; |
7ae26bd4 | 119 | bool kvm_async_interrupts_allowed; |
215e79c0 | 120 | bool kvm_halt_in_kernel_allowed; |
69e03ae6 | 121 | bool kvm_eventfds_allowed; |
cc7e0ddf | 122 | bool kvm_irqfds_allowed; |
614e41bc | 123 | bool kvm_msi_via_irqfd_allowed; |
f3e1bed8 | 124 | bool kvm_gsi_routing_allowed; |
76fe21de | 125 | bool kvm_gsi_direct_mapping; |
13eed94e | 126 | bool kvm_allowed; |
df9c8b75 | 127 | bool kvm_readonly_mem_allowed; |
05330448 | 128 | |
94a8d39a JK |
129 | static const KVMCapabilityInfo kvm_required_capabilites[] = { |
130 | KVM_CAP_INFO(USER_MEMORY), | |
131 | KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS), | |
132 | KVM_CAP_LAST_INFO | |
133 | }; | |
134 | ||
b8865591 | 135 | static KVMSlot *kvm_get_free_slot(KVMState *s) |
05330448 AL |
136 | { |
137 | int i; | |
138 | ||
fb541ca5 | 139 | for (i = 0; i < s->nr_slots; i++) { |
a426e122 | 140 | if (s->slots[i].memory_size == 0) { |
05330448 | 141 | return &s->slots[i]; |
a426e122 | 142 | } |
05330448 AL |
143 | } |
144 | ||
b8865591 IM |
145 | return NULL; |
146 | } | |
147 | ||
148 | bool kvm_has_free_slot(MachineState *ms) | |
149 | { | |
150 | return kvm_get_free_slot(KVM_STATE(ms->accelerator)); | |
151 | } | |
152 | ||
153 | static KVMSlot *kvm_alloc_slot(KVMState *s) | |
154 | { | |
155 | KVMSlot *slot = kvm_get_free_slot(s); | |
156 | ||
157 | if (slot) { | |
158 | return slot; | |
159 | } | |
160 | ||
d3f8d37f AL |
161 | fprintf(stderr, "%s: no free slot available\n", __func__); |
162 | abort(); | |
163 | } | |
164 | ||
165 | static KVMSlot *kvm_lookup_matching_slot(KVMState *s, | |
a8170e5e AK |
166 | hwaddr start_addr, |
167 | hwaddr end_addr) | |
d3f8d37f AL |
168 | { |
169 | int i; | |
170 | ||
fb541ca5 | 171 | for (i = 0; i < s->nr_slots; i++) { |
d3f8d37f AL |
172 | KVMSlot *mem = &s->slots[i]; |
173 | ||
174 | if (start_addr == mem->start_addr && | |
175 | end_addr == mem->start_addr + mem->memory_size) { | |
176 | return mem; | |
177 | } | |
178 | } | |
179 | ||
05330448 AL |
180 | return NULL; |
181 | } | |
182 | ||
6152e2ae AL |
183 | /* |
184 | * Find overlapping slot with lowest start address | |
185 | */ | |
186 | static KVMSlot *kvm_lookup_overlapping_slot(KVMState *s, | |
a8170e5e AK |
187 | hwaddr start_addr, |
188 | hwaddr end_addr) | |
05330448 | 189 | { |
6152e2ae | 190 | KVMSlot *found = NULL; |
05330448 AL |
191 | int i; |
192 | ||
fb541ca5 | 193 | for (i = 0; i < s->nr_slots; i++) { |
05330448 AL |
194 | KVMSlot *mem = &s->slots[i]; |
195 | ||
6152e2ae AL |
196 | if (mem->memory_size == 0 || |
197 | (found && found->start_addr < mem->start_addr)) { | |
198 | continue; | |
199 | } | |
200 | ||
201 | if (end_addr > mem->start_addr && | |
202 | start_addr < mem->start_addr + mem->memory_size) { | |
203 | found = mem; | |
204 | } | |
05330448 AL |
205 | } |
206 | ||
6152e2ae | 207 | return found; |
05330448 AL |
208 | } |
209 | ||
9f213ed9 | 210 | int kvm_physical_memory_addr_from_host(KVMState *s, void *ram, |
a8170e5e | 211 | hwaddr *phys_addr) |
983dfc3b HY |
212 | { |
213 | int i; | |
214 | ||
fb541ca5 | 215 | for (i = 0; i < s->nr_slots; i++) { |
983dfc3b HY |
216 | KVMSlot *mem = &s->slots[i]; |
217 | ||
9f213ed9 AK |
218 | if (ram >= mem->ram && ram < mem->ram + mem->memory_size) { |
219 | *phys_addr = mem->start_addr + (ram - mem->ram); | |
983dfc3b HY |
220 | return 1; |
221 | } | |
222 | } | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
5832d1f2 AL |
227 | static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot) |
228 | { | |
229 | struct kvm_userspace_memory_region mem; | |
230 | ||
231 | mem.slot = slot->slot; | |
232 | mem.guest_phys_addr = slot->start_addr; | |
9f213ed9 | 233 | mem.userspace_addr = (unsigned long)slot->ram; |
5832d1f2 | 234 | mem.flags = slot->flags; |
4495d6a7 JK |
235 | if (s->migration_log) { |
236 | mem.flags |= KVM_MEM_LOG_DIRTY_PAGES; | |
237 | } | |
651eb0f4 XG |
238 | |
239 | if (slot->memory_size && mem.flags & KVM_MEM_READONLY) { | |
235e8982 JJ |
240 | /* Set the slot size to 0 before setting the slot to the desired |
241 | * value. This is needed based on KVM commit 75d61fbc. */ | |
242 | mem.memory_size = 0; | |
243 | kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); | |
244 | } | |
245 | mem.memory_size = slot->memory_size; | |
5832d1f2 AL |
246 | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); |
247 | } | |
248 | ||
504134d2 | 249 | int kvm_init_vcpu(CPUState *cpu) |
05330448 AL |
250 | { |
251 | KVMState *s = kvm_state; | |
252 | long mmap_size; | |
253 | int ret; | |
254 | ||
8c0d577e | 255 | DPRINTF("kvm_init_vcpu\n"); |
05330448 | 256 | |
b164e48e | 257 | ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU, (void *)kvm_arch_vcpu_id(cpu)); |
05330448 | 258 | if (ret < 0) { |
8c0d577e | 259 | DPRINTF("kvm_create_vcpu failed\n"); |
05330448 AL |
260 | goto err; |
261 | } | |
262 | ||
8737c51c | 263 | cpu->kvm_fd = ret; |
a60f24b5 | 264 | cpu->kvm_state = s; |
20d695a9 | 265 | cpu->kvm_vcpu_dirty = true; |
05330448 AL |
266 | |
267 | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0); | |
268 | if (mmap_size < 0) { | |
748a680b | 269 | ret = mmap_size; |
8c0d577e | 270 | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n"); |
05330448 AL |
271 | goto err; |
272 | } | |
273 | ||
f7575c96 | 274 | cpu->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED, |
8737c51c | 275 | cpu->kvm_fd, 0); |
f7575c96 | 276 | if (cpu->kvm_run == MAP_FAILED) { |
05330448 | 277 | ret = -errno; |
8c0d577e | 278 | DPRINTF("mmap'ing vcpu state failed\n"); |
05330448 AL |
279 | goto err; |
280 | } | |
281 | ||
a426e122 JK |
282 | if (s->coalesced_mmio && !s->coalesced_mmio_ring) { |
283 | s->coalesced_mmio_ring = | |
f7575c96 | 284 | (void *)cpu->kvm_run + s->coalesced_mmio * PAGE_SIZE; |
a426e122 | 285 | } |
62a2744c | 286 | |
20d695a9 | 287 | ret = kvm_arch_init_vcpu(cpu); |
05330448 AL |
288 | err: |
289 | return ret; | |
290 | } | |
291 | ||
5832d1f2 AL |
292 | /* |
293 | * dirty pages logging control | |
294 | */ | |
25254bbc | 295 | |
235e8982 | 296 | static int kvm_mem_flags(KVMState *s, bool log_dirty, bool readonly) |
25254bbc | 297 | { |
235e8982 JJ |
298 | int flags = 0; |
299 | flags = log_dirty ? KVM_MEM_LOG_DIRTY_PAGES : 0; | |
300 | if (readonly && kvm_readonly_mem_allowed) { | |
301 | flags |= KVM_MEM_READONLY; | |
302 | } | |
303 | return flags; | |
25254bbc MT |
304 | } |
305 | ||
306 | static int kvm_slot_dirty_pages_log_change(KVMSlot *mem, bool log_dirty) | |
5832d1f2 AL |
307 | { |
308 | KVMState *s = kvm_state; | |
25254bbc | 309 | int flags, mask = KVM_MEM_LOG_DIRTY_PAGES; |
4495d6a7 JK |
310 | int old_flags; |
311 | ||
4495d6a7 | 312 | old_flags = mem->flags; |
5832d1f2 | 313 | |
235e8982 | 314 | flags = (mem->flags & ~mask) | kvm_mem_flags(s, log_dirty, false); |
5832d1f2 AL |
315 | mem->flags = flags; |
316 | ||
4495d6a7 JK |
317 | /* If nothing changed effectively, no need to issue ioctl */ |
318 | if (s->migration_log) { | |
319 | flags |= KVM_MEM_LOG_DIRTY_PAGES; | |
320 | } | |
25254bbc | 321 | |
4495d6a7 | 322 | if (flags == old_flags) { |
25254bbc | 323 | return 0; |
4495d6a7 JK |
324 | } |
325 | ||
5832d1f2 AL |
326 | return kvm_set_user_memory_region(s, mem); |
327 | } | |
328 | ||
a8170e5e | 329 | static int kvm_dirty_pages_log_change(hwaddr phys_addr, |
25254bbc MT |
330 | ram_addr_t size, bool log_dirty) |
331 | { | |
332 | KVMState *s = kvm_state; | |
333 | KVMSlot *mem = kvm_lookup_matching_slot(s, phys_addr, phys_addr + size); | |
334 | ||
335 | if (mem == NULL) { | |
336 | fprintf(stderr, "BUG: %s: invalid parameters " TARGET_FMT_plx "-" | |
337 | TARGET_FMT_plx "\n", __func__, phys_addr, | |
a8170e5e | 338 | (hwaddr)(phys_addr + size - 1)); |
25254bbc MT |
339 | return -EINVAL; |
340 | } | |
341 | return kvm_slot_dirty_pages_log_change(mem, log_dirty); | |
342 | } | |
343 | ||
a01672d3 AK |
344 | static void kvm_log_start(MemoryListener *listener, |
345 | MemoryRegionSection *section) | |
5832d1f2 | 346 | { |
a01672d3 AK |
347 | int r; |
348 | ||
349 | r = kvm_dirty_pages_log_change(section->offset_within_address_space, | |
052e87b0 | 350 | int128_get64(section->size), true); |
a01672d3 AK |
351 | if (r < 0) { |
352 | abort(); | |
353 | } | |
5832d1f2 AL |
354 | } |
355 | ||
a01672d3 AK |
356 | static void kvm_log_stop(MemoryListener *listener, |
357 | MemoryRegionSection *section) | |
5832d1f2 | 358 | { |
a01672d3 AK |
359 | int r; |
360 | ||
361 | r = kvm_dirty_pages_log_change(section->offset_within_address_space, | |
052e87b0 | 362 | int128_get64(section->size), false); |
a01672d3 AK |
363 | if (r < 0) { |
364 | abort(); | |
365 | } | |
5832d1f2 AL |
366 | } |
367 | ||
7b8f3b78 | 368 | static int kvm_set_migration_log(int enable) |
4495d6a7 JK |
369 | { |
370 | KVMState *s = kvm_state; | |
371 | KVMSlot *mem; | |
372 | int i, err; | |
373 | ||
374 | s->migration_log = enable; | |
375 | ||
fb541ca5 | 376 | for (i = 0; i < s->nr_slots; i++) { |
4495d6a7 JK |
377 | mem = &s->slots[i]; |
378 | ||
70fedd76 AW |
379 | if (!mem->memory_size) { |
380 | continue; | |
381 | } | |
4495d6a7 JK |
382 | if (!!(mem->flags & KVM_MEM_LOG_DIRTY_PAGES) == enable) { |
383 | continue; | |
384 | } | |
385 | err = kvm_set_user_memory_region(s, mem); | |
386 | if (err) { | |
387 | return err; | |
388 | } | |
389 | } | |
390 | return 0; | |
391 | } | |
392 | ||
8369e01c | 393 | /* get kvm's dirty pages bitmap and update qemu's */ |
ffcde12f AK |
394 | static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section, |
395 | unsigned long *bitmap) | |
96c1606b | 396 | { |
c9dd46fc | 397 | ram_addr_t start = section->offset_within_region + section->mr->ram_addr; |
5ff7fb77 JQ |
398 | ram_addr_t pages = int128_get64(section->size) / getpagesize(); |
399 | ||
400 | cpu_physical_memory_set_dirty_lebitmap(bitmap, start, pages); | |
8369e01c | 401 | return 0; |
96c1606b AG |
402 | } |
403 | ||
8369e01c MT |
404 | #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1)) |
405 | ||
5832d1f2 AL |
406 | /** |
407 | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space | |
fd4aa979 BS |
408 | * This function updates qemu's dirty bitmap using |
409 | * memory_region_set_dirty(). This means all bits are set | |
410 | * to dirty. | |
5832d1f2 | 411 | * |
d3f8d37f | 412 | * @start_add: start of logged region. |
5832d1f2 AL |
413 | * @end_addr: end of logged region. |
414 | */ | |
ffcde12f | 415 | static int kvm_physical_sync_dirty_bitmap(MemoryRegionSection *section) |
5832d1f2 AL |
416 | { |
417 | KVMState *s = kvm_state; | |
151f7749 | 418 | unsigned long size, allocated_size = 0; |
151f7749 JK |
419 | KVMDirtyLog d; |
420 | KVMSlot *mem; | |
421 | int ret = 0; | |
a8170e5e | 422 | hwaddr start_addr = section->offset_within_address_space; |
052e87b0 | 423 | hwaddr end_addr = start_addr + int128_get64(section->size); |
5832d1f2 | 424 | |
151f7749 JK |
425 | d.dirty_bitmap = NULL; |
426 | while (start_addr < end_addr) { | |
427 | mem = kvm_lookup_overlapping_slot(s, start_addr, end_addr); | |
428 | if (mem == NULL) { | |
429 | break; | |
430 | } | |
5832d1f2 | 431 | |
51b0c606 MT |
432 | /* XXX bad kernel interface alert |
433 | * For dirty bitmap, kernel allocates array of size aligned to | |
434 | * bits-per-long. But for case when the kernel is 64bits and | |
435 | * the userspace is 32bits, userspace can't align to the same | |
436 | * bits-per-long, since sizeof(long) is different between kernel | |
437 | * and user space. This way, userspace will provide buffer which | |
438 | * may be 4 bytes less than the kernel will use, resulting in | |
439 | * userspace memory corruption (which is not detectable by valgrind | |
440 | * too, in most cases). | |
441 | * So for now, let's align to 64 instead of HOST_LONG_BITS here, in | |
442 | * a hope that sizeof(long) wont become >8 any time soon. | |
443 | */ | |
444 | size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), | |
445 | /*HOST_LONG_BITS*/ 64) / 8; | |
151f7749 | 446 | if (!d.dirty_bitmap) { |
7267c094 | 447 | d.dirty_bitmap = g_malloc(size); |
151f7749 | 448 | } else if (size > allocated_size) { |
7267c094 | 449 | d.dirty_bitmap = g_realloc(d.dirty_bitmap, size); |
151f7749 JK |
450 | } |
451 | allocated_size = size; | |
452 | memset(d.dirty_bitmap, 0, allocated_size); | |
5832d1f2 | 453 | |
151f7749 | 454 | d.slot = mem->slot; |
5832d1f2 | 455 | |
50212d63 | 456 | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
8c0d577e | 457 | DPRINTF("ioctl failed %d\n", errno); |
151f7749 JK |
458 | ret = -1; |
459 | break; | |
460 | } | |
5832d1f2 | 461 | |
ffcde12f | 462 | kvm_get_dirty_pages_log_range(section, d.dirty_bitmap); |
8369e01c | 463 | start_addr = mem->start_addr + mem->memory_size; |
5832d1f2 | 464 | } |
7267c094 | 465 | g_free(d.dirty_bitmap); |
151f7749 JK |
466 | |
467 | return ret; | |
5832d1f2 AL |
468 | } |
469 | ||
95d2994a AK |
470 | static void kvm_coalesce_mmio_region(MemoryListener *listener, |
471 | MemoryRegionSection *secion, | |
a8170e5e | 472 | hwaddr start, hwaddr size) |
f65ed4c1 | 473 | { |
f65ed4c1 AL |
474 | KVMState *s = kvm_state; |
475 | ||
476 | if (s->coalesced_mmio) { | |
477 | struct kvm_coalesced_mmio_zone zone; | |
478 | ||
479 | zone.addr = start; | |
480 | zone.size = size; | |
7e680753 | 481 | zone.pad = 0; |
f65ed4c1 | 482 | |
95d2994a | 483 | (void)kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone); |
f65ed4c1 | 484 | } |
f65ed4c1 AL |
485 | } |
486 | ||
95d2994a AK |
487 | static void kvm_uncoalesce_mmio_region(MemoryListener *listener, |
488 | MemoryRegionSection *secion, | |
a8170e5e | 489 | hwaddr start, hwaddr size) |
f65ed4c1 | 490 | { |
f65ed4c1 AL |
491 | KVMState *s = kvm_state; |
492 | ||
493 | if (s->coalesced_mmio) { | |
494 | struct kvm_coalesced_mmio_zone zone; | |
495 | ||
496 | zone.addr = start; | |
497 | zone.size = size; | |
7e680753 | 498 | zone.pad = 0; |
f65ed4c1 | 499 | |
95d2994a | 500 | (void)kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone); |
f65ed4c1 | 501 | } |
f65ed4c1 AL |
502 | } |
503 | ||
ad7b8b33 AL |
504 | int kvm_check_extension(KVMState *s, unsigned int extension) |
505 | { | |
506 | int ret; | |
507 | ||
508 | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); | |
509 | if (ret < 0) { | |
510 | ret = 0; | |
511 | } | |
512 | ||
513 | return ret; | |
514 | } | |
515 | ||
7d0a07fa AG |
516 | int kvm_vm_check_extension(KVMState *s, unsigned int extension) |
517 | { | |
518 | int ret; | |
519 | ||
520 | ret = kvm_vm_ioctl(s, KVM_CHECK_EXTENSION, extension); | |
521 | if (ret < 0) { | |
522 | /* VM wide version not implemented, use global one instead */ | |
523 | ret = kvm_check_extension(s, extension); | |
524 | } | |
525 | ||
526 | return ret; | |
527 | } | |
528 | ||
584f2be7 | 529 | static int kvm_set_ioeventfd_mmio(int fd, hwaddr addr, uint32_t val, |
41cb62c2 | 530 | bool assign, uint32_t size, bool datamatch) |
500ffd4a MT |
531 | { |
532 | int ret; | |
533 | struct kvm_ioeventfd iofd; | |
534 | ||
41cb62c2 | 535 | iofd.datamatch = datamatch ? val : 0; |
500ffd4a MT |
536 | iofd.addr = addr; |
537 | iofd.len = size; | |
41cb62c2 | 538 | iofd.flags = 0; |
500ffd4a MT |
539 | iofd.fd = fd; |
540 | ||
541 | if (!kvm_enabled()) { | |
542 | return -ENOSYS; | |
543 | } | |
544 | ||
41cb62c2 MT |
545 | if (datamatch) { |
546 | iofd.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH; | |
547 | } | |
500ffd4a MT |
548 | if (!assign) { |
549 | iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; | |
550 | } | |
551 | ||
552 | ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd); | |
553 | ||
554 | if (ret < 0) { | |
555 | return -errno; | |
556 | } | |
557 | ||
558 | return 0; | |
559 | } | |
560 | ||
44c3f8f7 | 561 | static int kvm_set_ioeventfd_pio(int fd, uint16_t addr, uint16_t val, |
41cb62c2 | 562 | bool assign, uint32_t size, bool datamatch) |
500ffd4a MT |
563 | { |
564 | struct kvm_ioeventfd kick = { | |
41cb62c2 | 565 | .datamatch = datamatch ? val : 0, |
500ffd4a | 566 | .addr = addr, |
41cb62c2 | 567 | .flags = KVM_IOEVENTFD_FLAG_PIO, |
44c3f8f7 | 568 | .len = size, |
500ffd4a MT |
569 | .fd = fd, |
570 | }; | |
571 | int r; | |
572 | if (!kvm_enabled()) { | |
573 | return -ENOSYS; | |
574 | } | |
41cb62c2 MT |
575 | if (datamatch) { |
576 | kick.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH; | |
577 | } | |
500ffd4a MT |
578 | if (!assign) { |
579 | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; | |
580 | } | |
581 | r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); | |
582 | if (r < 0) { | |
583 | return r; | |
584 | } | |
585 | return 0; | |
586 | } | |
587 | ||
588 | ||
d2f2b8a7 SH |
589 | static int kvm_check_many_ioeventfds(void) |
590 | { | |
d0dcac83 SH |
591 | /* Userspace can use ioeventfd for io notification. This requires a host |
592 | * that supports eventfd(2) and an I/O thread; since eventfd does not | |
593 | * support SIGIO it cannot interrupt the vcpu. | |
594 | * | |
595 | * Older kernels have a 6 device limit on the KVM io bus. Find out so we | |
d2f2b8a7 SH |
596 | * can avoid creating too many ioeventfds. |
597 | */ | |
12d4536f | 598 | #if defined(CONFIG_EVENTFD) |
d2f2b8a7 SH |
599 | int ioeventfds[7]; |
600 | int i, ret = 0; | |
601 | for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) { | |
602 | ioeventfds[i] = eventfd(0, EFD_CLOEXEC); | |
603 | if (ioeventfds[i] < 0) { | |
604 | break; | |
605 | } | |
41cb62c2 | 606 | ret = kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, true, 2, true); |
d2f2b8a7 SH |
607 | if (ret < 0) { |
608 | close(ioeventfds[i]); | |
609 | break; | |
610 | } | |
611 | } | |
612 | ||
613 | /* Decide whether many devices are supported or not */ | |
614 | ret = i == ARRAY_SIZE(ioeventfds); | |
615 | ||
616 | while (i-- > 0) { | |
41cb62c2 | 617 | kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, false, 2, true); |
d2f2b8a7 SH |
618 | close(ioeventfds[i]); |
619 | } | |
620 | return ret; | |
621 | #else | |
622 | return 0; | |
623 | #endif | |
624 | } | |
625 | ||
94a8d39a JK |
626 | static const KVMCapabilityInfo * |
627 | kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list) | |
628 | { | |
629 | while (list->name) { | |
630 | if (!kvm_check_extension(s, list->value)) { | |
631 | return list; | |
632 | } | |
633 | list++; | |
634 | } | |
635 | return NULL; | |
636 | } | |
637 | ||
a01672d3 | 638 | static void kvm_set_phys_mem(MemoryRegionSection *section, bool add) |
46dbef6a MT |
639 | { |
640 | KVMState *s = kvm_state; | |
46dbef6a MT |
641 | KVMSlot *mem, old; |
642 | int err; | |
a01672d3 AK |
643 | MemoryRegion *mr = section->mr; |
644 | bool log_dirty = memory_region_is_logging(mr); | |
235e8982 JJ |
645 | bool writeable = !mr->readonly && !mr->rom_device; |
646 | bool readonly_flag = mr->readonly || memory_region_is_romd(mr); | |
a8170e5e | 647 | hwaddr start_addr = section->offset_within_address_space; |
052e87b0 | 648 | ram_addr_t size = int128_get64(section->size); |
9f213ed9 | 649 | void *ram = NULL; |
8f6f962b | 650 | unsigned delta; |
46dbef6a | 651 | |
14542fea | 652 | /* kvm works in page size chunks, but the function may be called |
f2a64032 AG |
653 | with sub-page size and unaligned start address. Pad the start |
654 | address to next and truncate size to previous page boundary. */ | |
655 | delta = (TARGET_PAGE_SIZE - (start_addr & ~TARGET_PAGE_MASK)); | |
656 | delta &= ~TARGET_PAGE_MASK; | |
8f6f962b AK |
657 | if (delta > size) { |
658 | return; | |
659 | } | |
660 | start_addr += delta; | |
661 | size -= delta; | |
662 | size &= TARGET_PAGE_MASK; | |
663 | if (!size || (start_addr & ~TARGET_PAGE_MASK)) { | |
664 | return; | |
665 | } | |
46dbef6a | 666 | |
a01672d3 | 667 | if (!memory_region_is_ram(mr)) { |
235e8982 JJ |
668 | if (writeable || !kvm_readonly_mem_allowed) { |
669 | return; | |
670 | } else if (!mr->romd_mode) { | |
671 | /* If the memory device is not in romd_mode, then we actually want | |
672 | * to remove the kvm memory slot so all accesses will trap. */ | |
673 | add = false; | |
674 | } | |
9f213ed9 AK |
675 | } |
676 | ||
8f6f962b | 677 | ram = memory_region_get_ram_ptr(mr) + section->offset_within_region + delta; |
a01672d3 | 678 | |
46dbef6a MT |
679 | while (1) { |
680 | mem = kvm_lookup_overlapping_slot(s, start_addr, start_addr + size); | |
681 | if (!mem) { | |
682 | break; | |
683 | } | |
684 | ||
a01672d3 | 685 | if (add && start_addr >= mem->start_addr && |
46dbef6a | 686 | (start_addr + size <= mem->start_addr + mem->memory_size) && |
9f213ed9 | 687 | (ram - start_addr == mem->ram - mem->start_addr)) { |
46dbef6a | 688 | /* The new slot fits into the existing one and comes with |
25254bbc MT |
689 | * identical parameters - update flags and done. */ |
690 | kvm_slot_dirty_pages_log_change(mem, log_dirty); | |
46dbef6a MT |
691 | return; |
692 | } | |
693 | ||
694 | old = *mem; | |
695 | ||
3fbffb62 AK |
696 | if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) { |
697 | kvm_physical_sync_dirty_bitmap(section); | |
698 | } | |
699 | ||
46dbef6a MT |
700 | /* unregister the overlapping slot */ |
701 | mem->memory_size = 0; | |
702 | err = kvm_set_user_memory_region(s, mem); | |
703 | if (err) { | |
704 | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n", | |
705 | __func__, strerror(-err)); | |
706 | abort(); | |
707 | } | |
708 | ||
709 | /* Workaround for older KVM versions: we can't join slots, even not by | |
710 | * unregistering the previous ones and then registering the larger | |
711 | * slot. We have to maintain the existing fragmentation. Sigh. | |
712 | * | |
713 | * This workaround assumes that the new slot starts at the same | |
714 | * address as the first existing one. If not or if some overlapping | |
715 | * slot comes around later, we will fail (not seen in practice so far) | |
716 | * - and actually require a recent KVM version. */ | |
717 | if (s->broken_set_mem_region && | |
a01672d3 | 718 | old.start_addr == start_addr && old.memory_size < size && add) { |
46dbef6a MT |
719 | mem = kvm_alloc_slot(s); |
720 | mem->memory_size = old.memory_size; | |
721 | mem->start_addr = old.start_addr; | |
9f213ed9 | 722 | mem->ram = old.ram; |
235e8982 | 723 | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
46dbef6a MT |
724 | |
725 | err = kvm_set_user_memory_region(s, mem); | |
726 | if (err) { | |
727 | fprintf(stderr, "%s: error updating slot: %s\n", __func__, | |
728 | strerror(-err)); | |
729 | abort(); | |
730 | } | |
731 | ||
732 | start_addr += old.memory_size; | |
9f213ed9 | 733 | ram += old.memory_size; |
46dbef6a MT |
734 | size -= old.memory_size; |
735 | continue; | |
736 | } | |
737 | ||
738 | /* register prefix slot */ | |
739 | if (old.start_addr < start_addr) { | |
740 | mem = kvm_alloc_slot(s); | |
741 | mem->memory_size = start_addr - old.start_addr; | |
742 | mem->start_addr = old.start_addr; | |
9f213ed9 | 743 | mem->ram = old.ram; |
235e8982 | 744 | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
46dbef6a MT |
745 | |
746 | err = kvm_set_user_memory_region(s, mem); | |
747 | if (err) { | |
748 | fprintf(stderr, "%s: error registering prefix slot: %s\n", | |
749 | __func__, strerror(-err)); | |
d4d6868f AG |
750 | #ifdef TARGET_PPC |
751 | fprintf(stderr, "%s: This is probably because your kernel's " \ | |
752 | "PAGE_SIZE is too big. Please try to use 4k " \ | |
753 | "PAGE_SIZE!\n", __func__); | |
754 | #endif | |
46dbef6a MT |
755 | abort(); |
756 | } | |
757 | } | |
758 | ||
759 | /* register suffix slot */ | |
760 | if (old.start_addr + old.memory_size > start_addr + size) { | |
761 | ram_addr_t size_delta; | |
762 | ||
763 | mem = kvm_alloc_slot(s); | |
764 | mem->start_addr = start_addr + size; | |
765 | size_delta = mem->start_addr - old.start_addr; | |
766 | mem->memory_size = old.memory_size - size_delta; | |
9f213ed9 | 767 | mem->ram = old.ram + size_delta; |
235e8982 | 768 | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
46dbef6a MT |
769 | |
770 | err = kvm_set_user_memory_region(s, mem); | |
771 | if (err) { | |
772 | fprintf(stderr, "%s: error registering suffix slot: %s\n", | |
773 | __func__, strerror(-err)); | |
774 | abort(); | |
775 | } | |
776 | } | |
777 | } | |
778 | ||
779 | /* in case the KVM bug workaround already "consumed" the new slot */ | |
a426e122 | 780 | if (!size) { |
46dbef6a | 781 | return; |
a426e122 | 782 | } |
a01672d3 | 783 | if (!add) { |
46dbef6a | 784 | return; |
a426e122 | 785 | } |
46dbef6a MT |
786 | mem = kvm_alloc_slot(s); |
787 | mem->memory_size = size; | |
788 | mem->start_addr = start_addr; | |
9f213ed9 | 789 | mem->ram = ram; |
235e8982 | 790 | mem->flags = kvm_mem_flags(s, log_dirty, readonly_flag); |
46dbef6a MT |
791 | |
792 | err = kvm_set_user_memory_region(s, mem); | |
793 | if (err) { | |
794 | fprintf(stderr, "%s: error registering slot: %s\n", __func__, | |
795 | strerror(-err)); | |
796 | abort(); | |
797 | } | |
798 | } | |
799 | ||
a01672d3 AK |
800 | static void kvm_region_add(MemoryListener *listener, |
801 | MemoryRegionSection *section) | |
802 | { | |
dfde4e6e | 803 | memory_region_ref(section->mr); |
a01672d3 AK |
804 | kvm_set_phys_mem(section, true); |
805 | } | |
806 | ||
807 | static void kvm_region_del(MemoryListener *listener, | |
808 | MemoryRegionSection *section) | |
809 | { | |
810 | kvm_set_phys_mem(section, false); | |
dfde4e6e | 811 | memory_region_unref(section->mr); |
a01672d3 AK |
812 | } |
813 | ||
814 | static void kvm_log_sync(MemoryListener *listener, | |
815 | MemoryRegionSection *section) | |
7b8f3b78 | 816 | { |
a01672d3 AK |
817 | int r; |
818 | ||
ffcde12f | 819 | r = kvm_physical_sync_dirty_bitmap(section); |
a01672d3 AK |
820 | if (r < 0) { |
821 | abort(); | |
822 | } | |
7b8f3b78 MT |
823 | } |
824 | ||
a01672d3 | 825 | static void kvm_log_global_start(struct MemoryListener *listener) |
7b8f3b78 | 826 | { |
a01672d3 AK |
827 | int r; |
828 | ||
829 | r = kvm_set_migration_log(1); | |
830 | assert(r >= 0); | |
7b8f3b78 MT |
831 | } |
832 | ||
a01672d3 | 833 | static void kvm_log_global_stop(struct MemoryListener *listener) |
7b8f3b78 | 834 | { |
a01672d3 AK |
835 | int r; |
836 | ||
837 | r = kvm_set_migration_log(0); | |
838 | assert(r >= 0); | |
7b8f3b78 MT |
839 | } |
840 | ||
d22b096e AK |
841 | static void kvm_mem_ioeventfd_add(MemoryListener *listener, |
842 | MemoryRegionSection *section, | |
843 | bool match_data, uint64_t data, | |
844 | EventNotifier *e) | |
845 | { | |
846 | int fd = event_notifier_get_fd(e); | |
80a1ea37 AK |
847 | int r; |
848 | ||
4b8f1c88 | 849 | r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space, |
052e87b0 PB |
850 | data, true, int128_get64(section->size), |
851 | match_data); | |
80a1ea37 | 852 | if (r < 0) { |
fa4ba923 AK |
853 | fprintf(stderr, "%s: error adding ioeventfd: %s\n", |
854 | __func__, strerror(-r)); | |
80a1ea37 AK |
855 | abort(); |
856 | } | |
857 | } | |
858 | ||
d22b096e AK |
859 | static void kvm_mem_ioeventfd_del(MemoryListener *listener, |
860 | MemoryRegionSection *section, | |
861 | bool match_data, uint64_t data, | |
862 | EventNotifier *e) | |
80a1ea37 | 863 | { |
d22b096e | 864 | int fd = event_notifier_get_fd(e); |
80a1ea37 AK |
865 | int r; |
866 | ||
4b8f1c88 | 867 | r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space, |
052e87b0 PB |
868 | data, false, int128_get64(section->size), |
869 | match_data); | |
80a1ea37 AK |
870 | if (r < 0) { |
871 | abort(); | |
872 | } | |
873 | } | |
874 | ||
d22b096e AK |
875 | static void kvm_io_ioeventfd_add(MemoryListener *listener, |
876 | MemoryRegionSection *section, | |
877 | bool match_data, uint64_t data, | |
878 | EventNotifier *e) | |
80a1ea37 | 879 | { |
d22b096e | 880 | int fd = event_notifier_get_fd(e); |
80a1ea37 AK |
881 | int r; |
882 | ||
44c3f8f7 | 883 | r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space, |
052e87b0 PB |
884 | data, true, int128_get64(section->size), |
885 | match_data); | |
80a1ea37 | 886 | if (r < 0) { |
fa4ba923 AK |
887 | fprintf(stderr, "%s: error adding ioeventfd: %s\n", |
888 | __func__, strerror(-r)); | |
80a1ea37 AK |
889 | abort(); |
890 | } | |
891 | } | |
892 | ||
d22b096e AK |
893 | static void kvm_io_ioeventfd_del(MemoryListener *listener, |
894 | MemoryRegionSection *section, | |
895 | bool match_data, uint64_t data, | |
896 | EventNotifier *e) | |
80a1ea37 AK |
897 | |
898 | { | |
d22b096e | 899 | int fd = event_notifier_get_fd(e); |
80a1ea37 AK |
900 | int r; |
901 | ||
44c3f8f7 | 902 | r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space, |
052e87b0 PB |
903 | data, false, int128_get64(section->size), |
904 | match_data); | |
80a1ea37 AK |
905 | if (r < 0) { |
906 | abort(); | |
907 | } | |
908 | } | |
909 | ||
a01672d3 AK |
910 | static MemoryListener kvm_memory_listener = { |
911 | .region_add = kvm_region_add, | |
912 | .region_del = kvm_region_del, | |
e5896b12 AP |
913 | .log_start = kvm_log_start, |
914 | .log_stop = kvm_log_stop, | |
a01672d3 AK |
915 | .log_sync = kvm_log_sync, |
916 | .log_global_start = kvm_log_global_start, | |
917 | .log_global_stop = kvm_log_global_stop, | |
d22b096e AK |
918 | .eventfd_add = kvm_mem_ioeventfd_add, |
919 | .eventfd_del = kvm_mem_ioeventfd_del, | |
95d2994a AK |
920 | .coalesced_mmio_add = kvm_coalesce_mmio_region, |
921 | .coalesced_mmio_del = kvm_uncoalesce_mmio_region, | |
d22b096e AK |
922 | .priority = 10, |
923 | }; | |
924 | ||
925 | static MemoryListener kvm_io_listener = { | |
d22b096e AK |
926 | .eventfd_add = kvm_io_ioeventfd_add, |
927 | .eventfd_del = kvm_io_ioeventfd_del, | |
72e22d2f | 928 | .priority = 10, |
7b8f3b78 MT |
929 | }; |
930 | ||
c3affe56 | 931 | static void kvm_handle_interrupt(CPUState *cpu, int mask) |
aa7f74d1 | 932 | { |
259186a7 | 933 | cpu->interrupt_request |= mask; |
aa7f74d1 | 934 | |
60e82579 | 935 | if (!qemu_cpu_is_self(cpu)) { |
c08d7424 | 936 | qemu_cpu_kick(cpu); |
aa7f74d1 JK |
937 | } |
938 | } | |
939 | ||
3889c3fa | 940 | int kvm_set_irq(KVMState *s, int irq, int level) |
84b058d7 JK |
941 | { |
942 | struct kvm_irq_level event; | |
943 | int ret; | |
944 | ||
7ae26bd4 | 945 | assert(kvm_async_interrupts_enabled()); |
84b058d7 JK |
946 | |
947 | event.level = level; | |
948 | event.irq = irq; | |
e333cd69 | 949 | ret = kvm_vm_ioctl(s, s->irq_set_ioctl, &event); |
84b058d7 | 950 | if (ret < 0) { |
3889c3fa | 951 | perror("kvm_set_irq"); |
84b058d7 JK |
952 | abort(); |
953 | } | |
954 | ||
e333cd69 | 955 | return (s->irq_set_ioctl == KVM_IRQ_LINE) ? 1 : event.status; |
84b058d7 JK |
956 | } |
957 | ||
958 | #ifdef KVM_CAP_IRQ_ROUTING | |
d3d3bef0 JK |
959 | typedef struct KVMMSIRoute { |
960 | struct kvm_irq_routing_entry kroute; | |
961 | QTAILQ_ENTRY(KVMMSIRoute) entry; | |
962 | } KVMMSIRoute; | |
963 | ||
84b058d7 JK |
964 | static void set_gsi(KVMState *s, unsigned int gsi) |
965 | { | |
84b058d7 JK |
966 | s->used_gsi_bitmap[gsi / 32] |= 1U << (gsi % 32); |
967 | } | |
968 | ||
04fa27f5 JK |
969 | static void clear_gsi(KVMState *s, unsigned int gsi) |
970 | { | |
971 | s->used_gsi_bitmap[gsi / 32] &= ~(1U << (gsi % 32)); | |
972 | } | |
973 | ||
7b774593 | 974 | void kvm_init_irq_routing(KVMState *s) |
84b058d7 | 975 | { |
04fa27f5 | 976 | int gsi_count, i; |
84b058d7 | 977 | |
00008418 | 978 | gsi_count = kvm_check_extension(s, KVM_CAP_IRQ_ROUTING) - 1; |
84b058d7 JK |
979 | if (gsi_count > 0) { |
980 | unsigned int gsi_bits, i; | |
981 | ||
982 | /* Round up so we can search ints using ffs */ | |
bc8c6788 | 983 | gsi_bits = ALIGN(gsi_count, 32); |
84b058d7 | 984 | s->used_gsi_bitmap = g_malloc0(gsi_bits / 8); |
4e2e4e63 | 985 | s->gsi_count = gsi_count; |
84b058d7 JK |
986 | |
987 | /* Mark any over-allocated bits as already in use */ | |
988 | for (i = gsi_count; i < gsi_bits; i++) { | |
989 | set_gsi(s, i); | |
990 | } | |
991 | } | |
992 | ||
993 | s->irq_routes = g_malloc0(sizeof(*s->irq_routes)); | |
994 | s->nr_allocated_irq_routes = 0; | |
995 | ||
4a3adebb JK |
996 | if (!s->direct_msi) { |
997 | for (i = 0; i < KVM_MSI_HASHTAB_SIZE; i++) { | |
998 | QTAILQ_INIT(&s->msi_hashtab[i]); | |
999 | } | |
04fa27f5 JK |
1000 | } |
1001 | ||
84b058d7 JK |
1002 | kvm_arch_init_irq_routing(s); |
1003 | } | |
1004 | ||
cb925cf9 | 1005 | void kvm_irqchip_commit_routes(KVMState *s) |
e7b20308 JK |
1006 | { |
1007 | int ret; | |
1008 | ||
1009 | s->irq_routes->flags = 0; | |
1010 | ret = kvm_vm_ioctl(s, KVM_SET_GSI_ROUTING, s->irq_routes); | |
1011 | assert(ret == 0); | |
1012 | } | |
1013 | ||
84b058d7 JK |
1014 | static void kvm_add_routing_entry(KVMState *s, |
1015 | struct kvm_irq_routing_entry *entry) | |
1016 | { | |
1017 | struct kvm_irq_routing_entry *new; | |
1018 | int n, size; | |
1019 | ||
1020 | if (s->irq_routes->nr == s->nr_allocated_irq_routes) { | |
1021 | n = s->nr_allocated_irq_routes * 2; | |
1022 | if (n < 64) { | |
1023 | n = 64; | |
1024 | } | |
1025 | size = sizeof(struct kvm_irq_routing); | |
1026 | size += n * sizeof(*new); | |
1027 | s->irq_routes = g_realloc(s->irq_routes, size); | |
1028 | s->nr_allocated_irq_routes = n; | |
1029 | } | |
1030 | n = s->irq_routes->nr++; | |
1031 | new = &s->irq_routes->entries[n]; | |
0fbc2074 MT |
1032 | |
1033 | *new = *entry; | |
84b058d7 JK |
1034 | |
1035 | set_gsi(s, entry->gsi); | |
1036 | } | |
1037 | ||
cc57407e JK |
1038 | static int kvm_update_routing_entry(KVMState *s, |
1039 | struct kvm_irq_routing_entry *new_entry) | |
1040 | { | |
1041 | struct kvm_irq_routing_entry *entry; | |
1042 | int n; | |
1043 | ||
1044 | for (n = 0; n < s->irq_routes->nr; n++) { | |
1045 | entry = &s->irq_routes->entries[n]; | |
1046 | if (entry->gsi != new_entry->gsi) { | |
1047 | continue; | |
1048 | } | |
1049 | ||
40509f7f MT |
1050 | if(!memcmp(entry, new_entry, sizeof *entry)) { |
1051 | return 0; | |
1052 | } | |
1053 | ||
0fbc2074 | 1054 | *entry = *new_entry; |
cc57407e JK |
1055 | |
1056 | kvm_irqchip_commit_routes(s); | |
1057 | ||
1058 | return 0; | |
1059 | } | |
1060 | ||
1061 | return -ESRCH; | |
1062 | } | |
1063 | ||
1df186df | 1064 | void kvm_irqchip_add_irq_route(KVMState *s, int irq, int irqchip, int pin) |
84b058d7 | 1065 | { |
0fbc2074 | 1066 | struct kvm_irq_routing_entry e = {}; |
84b058d7 | 1067 | |
4e2e4e63 JK |
1068 | assert(pin < s->gsi_count); |
1069 | ||
84b058d7 JK |
1070 | e.gsi = irq; |
1071 | e.type = KVM_IRQ_ROUTING_IRQCHIP; | |
1072 | e.flags = 0; | |
1073 | e.u.irqchip.irqchip = irqchip; | |
1074 | e.u.irqchip.pin = pin; | |
1075 | kvm_add_routing_entry(s, &e); | |
1076 | } | |
1077 | ||
1e2aa8be | 1078 | void kvm_irqchip_release_virq(KVMState *s, int virq) |
04fa27f5 JK |
1079 | { |
1080 | struct kvm_irq_routing_entry *e; | |
1081 | int i; | |
1082 | ||
76fe21de AK |
1083 | if (kvm_gsi_direct_mapping()) { |
1084 | return; | |
1085 | } | |
1086 | ||
04fa27f5 JK |
1087 | for (i = 0; i < s->irq_routes->nr; i++) { |
1088 | e = &s->irq_routes->entries[i]; | |
1089 | if (e->gsi == virq) { | |
1090 | s->irq_routes->nr--; | |
1091 | *e = s->irq_routes->entries[s->irq_routes->nr]; | |
1092 | } | |
1093 | } | |
1094 | clear_gsi(s, virq); | |
1095 | } | |
1096 | ||
1097 | static unsigned int kvm_hash_msi(uint32_t data) | |
1098 | { | |
1099 | /* This is optimized for IA32 MSI layout. However, no other arch shall | |
1100 | * repeat the mistake of not providing a direct MSI injection API. */ | |
1101 | return data & 0xff; | |
1102 | } | |
1103 | ||
1104 | static void kvm_flush_dynamic_msi_routes(KVMState *s) | |
1105 | { | |
1106 | KVMMSIRoute *route, *next; | |
1107 | unsigned int hash; | |
1108 | ||
1109 | for (hash = 0; hash < KVM_MSI_HASHTAB_SIZE; hash++) { | |
1110 | QTAILQ_FOREACH_SAFE(route, &s->msi_hashtab[hash], entry, next) { | |
1111 | kvm_irqchip_release_virq(s, route->kroute.gsi); | |
1112 | QTAILQ_REMOVE(&s->msi_hashtab[hash], route, entry); | |
1113 | g_free(route); | |
1114 | } | |
1115 | } | |
1116 | } | |
1117 | ||
1118 | static int kvm_irqchip_get_virq(KVMState *s) | |
1119 | { | |
1120 | uint32_t *word = s->used_gsi_bitmap; | |
1121 | int max_words = ALIGN(s->gsi_count, 32) / 32; | |
1122 | int i, bit; | |
1123 | bool retry = true; | |
1124 | ||
1125 | again: | |
1126 | /* Return the lowest unused GSI in the bitmap */ | |
1127 | for (i = 0; i < max_words; i++) { | |
1128 | bit = ffs(~word[i]); | |
1129 | if (!bit) { | |
1130 | continue; | |
1131 | } | |
1132 | ||
1133 | return bit - 1 + i * 32; | |
1134 | } | |
4a3adebb | 1135 | if (!s->direct_msi && retry) { |
04fa27f5 JK |
1136 | retry = false; |
1137 | kvm_flush_dynamic_msi_routes(s); | |
1138 | goto again; | |
1139 | } | |
1140 | return -ENOSPC; | |
1141 | ||
1142 | } | |
1143 | ||
1144 | static KVMMSIRoute *kvm_lookup_msi_route(KVMState *s, MSIMessage msg) | |
1145 | { | |
1146 | unsigned int hash = kvm_hash_msi(msg.data); | |
1147 | KVMMSIRoute *route; | |
1148 | ||
1149 | QTAILQ_FOREACH(route, &s->msi_hashtab[hash], entry) { | |
1150 | if (route->kroute.u.msi.address_lo == (uint32_t)msg.address && | |
1151 | route->kroute.u.msi.address_hi == (msg.address >> 32) && | |
d07cc1f1 | 1152 | route->kroute.u.msi.data == le32_to_cpu(msg.data)) { |
04fa27f5 JK |
1153 | return route; |
1154 | } | |
1155 | } | |
1156 | return NULL; | |
1157 | } | |
1158 | ||
1159 | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg) | |
1160 | { | |
4a3adebb | 1161 | struct kvm_msi msi; |
04fa27f5 JK |
1162 | KVMMSIRoute *route; |
1163 | ||
4a3adebb JK |
1164 | if (s->direct_msi) { |
1165 | msi.address_lo = (uint32_t)msg.address; | |
1166 | msi.address_hi = msg.address >> 32; | |
d07cc1f1 | 1167 | msi.data = le32_to_cpu(msg.data); |
4a3adebb JK |
1168 | msi.flags = 0; |
1169 | memset(msi.pad, 0, sizeof(msi.pad)); | |
1170 | ||
1171 | return kvm_vm_ioctl(s, KVM_SIGNAL_MSI, &msi); | |
1172 | } | |
1173 | ||
04fa27f5 JK |
1174 | route = kvm_lookup_msi_route(s, msg); |
1175 | if (!route) { | |
e7b20308 | 1176 | int virq; |
04fa27f5 JK |
1177 | |
1178 | virq = kvm_irqchip_get_virq(s); | |
1179 | if (virq < 0) { | |
1180 | return virq; | |
1181 | } | |
1182 | ||
0fbc2074 | 1183 | route = g_malloc0(sizeof(KVMMSIRoute)); |
04fa27f5 JK |
1184 | route->kroute.gsi = virq; |
1185 | route->kroute.type = KVM_IRQ_ROUTING_MSI; | |
1186 | route->kroute.flags = 0; | |
1187 | route->kroute.u.msi.address_lo = (uint32_t)msg.address; | |
1188 | route->kroute.u.msi.address_hi = msg.address >> 32; | |
d07cc1f1 | 1189 | route->kroute.u.msi.data = le32_to_cpu(msg.data); |
04fa27f5 JK |
1190 | |
1191 | kvm_add_routing_entry(s, &route->kroute); | |
cb925cf9 | 1192 | kvm_irqchip_commit_routes(s); |
04fa27f5 JK |
1193 | |
1194 | QTAILQ_INSERT_TAIL(&s->msi_hashtab[kvm_hash_msi(msg.data)], route, | |
1195 | entry); | |
04fa27f5 JK |
1196 | } |
1197 | ||
1198 | assert(route->kroute.type == KVM_IRQ_ROUTING_MSI); | |
1199 | ||
3889c3fa | 1200 | return kvm_set_irq(s, route->kroute.gsi, 1); |
04fa27f5 JK |
1201 | } |
1202 | ||
92b4e489 JK |
1203 | int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg) |
1204 | { | |
0fbc2074 | 1205 | struct kvm_irq_routing_entry kroute = {}; |
92b4e489 JK |
1206 | int virq; |
1207 | ||
76fe21de AK |
1208 | if (kvm_gsi_direct_mapping()) { |
1209 | return msg.data & 0xffff; | |
1210 | } | |
1211 | ||
f3e1bed8 | 1212 | if (!kvm_gsi_routing_enabled()) { |
92b4e489 JK |
1213 | return -ENOSYS; |
1214 | } | |
1215 | ||
1216 | virq = kvm_irqchip_get_virq(s); | |
1217 | if (virq < 0) { | |
1218 | return virq; | |
1219 | } | |
1220 | ||
1221 | kroute.gsi = virq; | |
1222 | kroute.type = KVM_IRQ_ROUTING_MSI; | |
1223 | kroute.flags = 0; | |
1224 | kroute.u.msi.address_lo = (uint32_t)msg.address; | |
1225 | kroute.u.msi.address_hi = msg.address >> 32; | |
d07cc1f1 | 1226 | kroute.u.msi.data = le32_to_cpu(msg.data); |
92b4e489 JK |
1227 | |
1228 | kvm_add_routing_entry(s, &kroute); | |
cb925cf9 | 1229 | kvm_irqchip_commit_routes(s); |
92b4e489 JK |
1230 | |
1231 | return virq; | |
1232 | } | |
1233 | ||
cc57407e JK |
1234 | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg) |
1235 | { | |
0fbc2074 | 1236 | struct kvm_irq_routing_entry kroute = {}; |
cc57407e | 1237 | |
76fe21de AK |
1238 | if (kvm_gsi_direct_mapping()) { |
1239 | return 0; | |
1240 | } | |
1241 | ||
cc57407e JK |
1242 | if (!kvm_irqchip_in_kernel()) { |
1243 | return -ENOSYS; | |
1244 | } | |
1245 | ||
1246 | kroute.gsi = virq; | |
1247 | kroute.type = KVM_IRQ_ROUTING_MSI; | |
1248 | kroute.flags = 0; | |
1249 | kroute.u.msi.address_lo = (uint32_t)msg.address; | |
1250 | kroute.u.msi.address_hi = msg.address >> 32; | |
d07cc1f1 | 1251 | kroute.u.msi.data = le32_to_cpu(msg.data); |
cc57407e JK |
1252 | |
1253 | return kvm_update_routing_entry(s, &kroute); | |
1254 | } | |
1255 | ||
ca916d37 VM |
1256 | static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int rfd, int virq, |
1257 | bool assign) | |
39853bbc JK |
1258 | { |
1259 | struct kvm_irqfd irqfd = { | |
1260 | .fd = fd, | |
1261 | .gsi = virq, | |
1262 | .flags = assign ? 0 : KVM_IRQFD_FLAG_DEASSIGN, | |
1263 | }; | |
1264 | ||
ca916d37 VM |
1265 | if (rfd != -1) { |
1266 | irqfd.flags |= KVM_IRQFD_FLAG_RESAMPLE; | |
1267 | irqfd.resamplefd = rfd; | |
1268 | } | |
1269 | ||
cc7e0ddf | 1270 | if (!kvm_irqfds_enabled()) { |
39853bbc JK |
1271 | return -ENOSYS; |
1272 | } | |
1273 | ||
1274 | return kvm_vm_ioctl(s, KVM_IRQFD, &irqfd); | |
1275 | } | |
1276 | ||
d426d9fb CH |
1277 | int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter) |
1278 | { | |
1279 | struct kvm_irq_routing_entry kroute; | |
1280 | int virq; | |
1281 | ||
1282 | if (!kvm_gsi_routing_enabled()) { | |
1283 | return -ENOSYS; | |
1284 | } | |
1285 | ||
1286 | virq = kvm_irqchip_get_virq(s); | |
1287 | if (virq < 0) { | |
1288 | return virq; | |
1289 | } | |
1290 | ||
1291 | kroute.gsi = virq; | |
1292 | kroute.type = KVM_IRQ_ROUTING_S390_ADAPTER; | |
1293 | kroute.flags = 0; | |
1294 | kroute.u.adapter.summary_addr = adapter->summary_addr; | |
1295 | kroute.u.adapter.ind_addr = adapter->ind_addr; | |
1296 | kroute.u.adapter.summary_offset = adapter->summary_offset; | |
1297 | kroute.u.adapter.ind_offset = adapter->ind_offset; | |
1298 | kroute.u.adapter.adapter_id = adapter->adapter_id; | |
1299 | ||
1300 | kvm_add_routing_entry(s, &kroute); | |
1301 | kvm_irqchip_commit_routes(s); | |
1302 | ||
1303 | return virq; | |
1304 | } | |
1305 | ||
84b058d7 JK |
1306 | #else /* !KVM_CAP_IRQ_ROUTING */ |
1307 | ||
7b774593 | 1308 | void kvm_init_irq_routing(KVMState *s) |
84b058d7 JK |
1309 | { |
1310 | } | |
04fa27f5 | 1311 | |
d3d3bef0 JK |
1312 | void kvm_irqchip_release_virq(KVMState *s, int virq) |
1313 | { | |
1314 | } | |
1315 | ||
04fa27f5 JK |
1316 | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg) |
1317 | { | |
1318 | abort(); | |
1319 | } | |
92b4e489 JK |
1320 | |
1321 | int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg) | |
1322 | { | |
df410675 | 1323 | return -ENOSYS; |
92b4e489 | 1324 | } |
39853bbc | 1325 | |
d426d9fb CH |
1326 | int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter) |
1327 | { | |
1328 | return -ENOSYS; | |
1329 | } | |
1330 | ||
39853bbc JK |
1331 | static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int virq, bool assign) |
1332 | { | |
1333 | abort(); | |
1334 | } | |
dabe3143 MT |
1335 | |
1336 | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg) | |
1337 | { | |
1338 | return -ENOSYS; | |
1339 | } | |
84b058d7 JK |
1340 | #endif /* !KVM_CAP_IRQ_ROUTING */ |
1341 | ||
ca916d37 VM |
1342 | int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, |
1343 | EventNotifier *rn, int virq) | |
39853bbc | 1344 | { |
ca916d37 VM |
1345 | return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n), |
1346 | rn ? event_notifier_get_fd(rn) : -1, virq, true); | |
39853bbc JK |
1347 | } |
1348 | ||
b131c74a | 1349 | int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq) |
15b2bd18 | 1350 | { |
ca916d37 VM |
1351 | return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n), -1, virq, |
1352 | false); | |
15b2bd18 PB |
1353 | } |
1354 | ||
84b058d7 JK |
1355 | static int kvm_irqchip_create(KVMState *s) |
1356 | { | |
84b058d7 JK |
1357 | int ret; |
1358 | ||
36ad0e94 | 1359 | if (!qemu_opt_get_bool(qemu_get_machine_opts(), "kernel_irqchip", true) || |
d426d9fb CH |
1360 | (!kvm_check_extension(s, KVM_CAP_IRQCHIP) && |
1361 | (kvm_vm_enable_cap(s, KVM_CAP_S390_IRQCHIP, 0) < 0))) { | |
84b058d7 JK |
1362 | return 0; |
1363 | } | |
1364 | ||
d6032e06 CD |
1365 | /* First probe and see if there's a arch-specific hook to create the |
1366 | * in-kernel irqchip for us */ | |
1367 | ret = kvm_arch_irqchip_create(s); | |
84b058d7 | 1368 | if (ret < 0) { |
84b058d7 | 1369 | return ret; |
d6032e06 CD |
1370 | } else if (ret == 0) { |
1371 | ret = kvm_vm_ioctl(s, KVM_CREATE_IRQCHIP); | |
1372 | if (ret < 0) { | |
1373 | fprintf(stderr, "Create kernel irqchip failed\n"); | |
1374 | return ret; | |
1375 | } | |
84b058d7 JK |
1376 | } |
1377 | ||
3d4b2649 | 1378 | kvm_kernel_irqchip = true; |
7ae26bd4 PM |
1379 | /* If we have an in-kernel IRQ chip then we must have asynchronous |
1380 | * interrupt delivery (though the reverse is not necessarily true) | |
1381 | */ | |
1382 | kvm_async_interrupts_allowed = true; | |
215e79c0 | 1383 | kvm_halt_in_kernel_allowed = true; |
84b058d7 JK |
1384 | |
1385 | kvm_init_irq_routing(s); | |
1386 | ||
1387 | return 0; | |
1388 | } | |
1389 | ||
670436ce AJ |
1390 | /* Find number of supported CPUs using the recommended |
1391 | * procedure from the kernel API documentation to cope with | |
1392 | * older kernels that may be missing capabilities. | |
1393 | */ | |
1394 | static int kvm_recommended_vcpus(KVMState *s) | |
3ed444e9 | 1395 | { |
670436ce AJ |
1396 | int ret = kvm_check_extension(s, KVM_CAP_NR_VCPUS); |
1397 | return (ret) ? ret : 4; | |
1398 | } | |
3ed444e9 | 1399 | |
670436ce AJ |
1400 | static int kvm_max_vcpus(KVMState *s) |
1401 | { | |
1402 | int ret = kvm_check_extension(s, KVM_CAP_MAX_VCPUS); | |
1403 | return (ret) ? ret : kvm_recommended_vcpus(s); | |
3ed444e9 DH |
1404 | } |
1405 | ||
f6a1ef64 | 1406 | static int kvm_init(MachineState *ms) |
05330448 | 1407 | { |
f6a1ef64 | 1408 | MachineClass *mc = MACHINE_GET_CLASS(ms); |
168ccc11 JK |
1409 | static const char upgrade_note[] = |
1410 | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n" | |
1411 | "(see http://sourceforge.net/projects/kvm).\n"; | |
670436ce AJ |
1412 | struct { |
1413 | const char *name; | |
1414 | int num; | |
1415 | } num_cpus[] = { | |
1416 | { "SMP", smp_cpus }, | |
1417 | { "hotpluggable", max_cpus }, | |
1418 | { NULL, } | |
1419 | }, *nc = num_cpus; | |
1420 | int soft_vcpus_limit, hard_vcpus_limit; | |
05330448 | 1421 | KVMState *s; |
94a8d39a | 1422 | const KVMCapabilityInfo *missing_cap; |
05330448 | 1423 | int ret; |
135a129a AK |
1424 | int i, type = 0; |
1425 | const char *kvm_type; | |
05330448 | 1426 | |
fc02086b | 1427 | s = KVM_STATE(ms->accelerator); |
05330448 | 1428 | |
3145fcb6 DG |
1429 | /* |
1430 | * On systems where the kernel can support different base page | |
1431 | * sizes, host page size may be different from TARGET_PAGE_SIZE, | |
1432 | * even with KVM. TARGET_PAGE_SIZE is assumed to be the minimum | |
1433 | * page size for the system though. | |
1434 | */ | |
1435 | assert(TARGET_PAGE_SIZE <= getpagesize()); | |
47c16ed5 | 1436 | page_size_init(); |
3145fcb6 | 1437 | |
aed6efb9 JH |
1438 | s->sigmask_len = 8; |
1439 | ||
e22a25c9 | 1440 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
72cf2d4f | 1441 | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
e22a25c9 | 1442 | #endif |
05330448 | 1443 | s->vmfd = -1; |
40ff6d7e | 1444 | s->fd = qemu_open("/dev/kvm", O_RDWR); |
05330448 AL |
1445 | if (s->fd == -1) { |
1446 | fprintf(stderr, "Could not access KVM kernel module: %m\n"); | |
1447 | ret = -errno; | |
1448 | goto err; | |
1449 | } | |
1450 | ||
1451 | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0); | |
1452 | if (ret < KVM_API_VERSION) { | |
0e1dac6c | 1453 | if (ret >= 0) { |
05330448 | 1454 | ret = -EINVAL; |
a426e122 | 1455 | } |
05330448 AL |
1456 | fprintf(stderr, "kvm version too old\n"); |
1457 | goto err; | |
1458 | } | |
1459 | ||
1460 | if (ret > KVM_API_VERSION) { | |
1461 | ret = -EINVAL; | |
1462 | fprintf(stderr, "kvm version not supported\n"); | |
1463 | goto err; | |
1464 | } | |
1465 | ||
fb541ca5 AW |
1466 | s->nr_slots = kvm_check_extension(s, KVM_CAP_NR_MEMSLOTS); |
1467 | ||
1468 | /* If unspecified, use the default value */ | |
1469 | if (!s->nr_slots) { | |
1470 | s->nr_slots = 32; | |
1471 | } | |
1472 | ||
1473 | s->slots = g_malloc0(s->nr_slots * sizeof(KVMSlot)); | |
1474 | ||
1475 | for (i = 0; i < s->nr_slots; i++) { | |
1476 | s->slots[i].slot = i; | |
1477 | } | |
1478 | ||
670436ce AJ |
1479 | /* check the vcpu limits */ |
1480 | soft_vcpus_limit = kvm_recommended_vcpus(s); | |
1481 | hard_vcpus_limit = kvm_max_vcpus(s); | |
3ed444e9 | 1482 | |
670436ce AJ |
1483 | while (nc->name) { |
1484 | if (nc->num > soft_vcpus_limit) { | |
1485 | fprintf(stderr, | |
1486 | "Warning: Number of %s cpus requested (%d) exceeds " | |
1487 | "the recommended cpus supported by KVM (%d)\n", | |
1488 | nc->name, nc->num, soft_vcpus_limit); | |
1489 | ||
1490 | if (nc->num > hard_vcpus_limit) { | |
670436ce AJ |
1491 | fprintf(stderr, "Number of %s cpus requested (%d) exceeds " |
1492 | "the maximum cpus supported by KVM (%d)\n", | |
1493 | nc->name, nc->num, hard_vcpus_limit); | |
9ba3cf54 | 1494 | exit(1); |
670436ce AJ |
1495 | } |
1496 | } | |
1497 | nc++; | |
7dc52526 MT |
1498 | } |
1499 | ||
135a129a | 1500 | kvm_type = qemu_opt_get(qemu_get_machine_opts(), "kvm-type"); |
f1e29879 MA |
1501 | if (mc->kvm_type) { |
1502 | type = mc->kvm_type(kvm_type); | |
135a129a | 1503 | } else if (kvm_type) { |
0e1dac6c | 1504 | ret = -EINVAL; |
135a129a AK |
1505 | fprintf(stderr, "Invalid argument kvm-type=%s\n", kvm_type); |
1506 | goto err; | |
1507 | } | |
1508 | ||
94ccff13 | 1509 | do { |
135a129a | 1510 | ret = kvm_ioctl(s, KVM_CREATE_VM, type); |
94ccff13 TK |
1511 | } while (ret == -EINTR); |
1512 | ||
1513 | if (ret < 0) { | |
521f438e | 1514 | fprintf(stderr, "ioctl(KVM_CREATE_VM) failed: %d %s\n", -ret, |
94ccff13 TK |
1515 | strerror(-ret)); |
1516 | ||
0104dcac AG |
1517 | #ifdef TARGET_S390X |
1518 | fprintf(stderr, "Please add the 'switch_amode' kernel parameter to " | |
1519 | "your host kernel command line\n"); | |
1520 | #endif | |
05330448 | 1521 | goto err; |
0104dcac | 1522 | } |
05330448 | 1523 | |
94ccff13 | 1524 | s->vmfd = ret; |
94a8d39a JK |
1525 | missing_cap = kvm_check_extension_list(s, kvm_required_capabilites); |
1526 | if (!missing_cap) { | |
1527 | missing_cap = | |
1528 | kvm_check_extension_list(s, kvm_arch_required_capabilities); | |
05330448 | 1529 | } |
94a8d39a | 1530 | if (missing_cap) { |
ad7b8b33 | 1531 | ret = -EINVAL; |
94a8d39a JK |
1532 | fprintf(stderr, "kvm does not support %s\n%s", |
1533 | missing_cap->name, upgrade_note); | |
d85dc283 AL |
1534 | goto err; |
1535 | } | |
1536 | ||
ad7b8b33 | 1537 | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
f65ed4c1 | 1538 | |
e69917e2 | 1539 | s->broken_set_mem_region = 1; |
14a09518 | 1540 | ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); |
e69917e2 JK |
1541 | if (ret > 0) { |
1542 | s->broken_set_mem_region = 0; | |
1543 | } | |
e69917e2 | 1544 | |
a0fb002c JK |
1545 | #ifdef KVM_CAP_VCPU_EVENTS |
1546 | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); | |
1547 | #endif | |
1548 | ||
b0b1d690 JK |
1549 | s->robust_singlestep = |
1550 | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); | |
b0b1d690 | 1551 | |
ff44f1a3 JK |
1552 | #ifdef KVM_CAP_DEBUGREGS |
1553 | s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); | |
1554 | #endif | |
1555 | ||
f1665b21 SY |
1556 | #ifdef KVM_CAP_XSAVE |
1557 | s->xsave = kvm_check_extension(s, KVM_CAP_XSAVE); | |
1558 | #endif | |
1559 | ||
f1665b21 SY |
1560 | #ifdef KVM_CAP_XCRS |
1561 | s->xcrs = kvm_check_extension(s, KVM_CAP_XCRS); | |
1562 | #endif | |
1563 | ||
8a7c7393 JK |
1564 | #ifdef KVM_CAP_PIT_STATE2 |
1565 | s->pit_state2 = kvm_check_extension(s, KVM_CAP_PIT_STATE2); | |
1566 | #endif | |
1567 | ||
d3d3bef0 | 1568 | #ifdef KVM_CAP_IRQ_ROUTING |
4a3adebb | 1569 | s->direct_msi = (kvm_check_extension(s, KVM_CAP_SIGNAL_MSI) > 0); |
d3d3bef0 | 1570 | #endif |
4a3adebb | 1571 | |
3ab73842 JK |
1572 | s->intx_set_mask = kvm_check_extension(s, KVM_CAP_PCI_2_3); |
1573 | ||
e333cd69 | 1574 | s->irq_set_ioctl = KVM_IRQ_LINE; |
8732fbd2 | 1575 | if (kvm_check_extension(s, KVM_CAP_IRQ_INJECT_STATUS)) { |
e333cd69 | 1576 | s->irq_set_ioctl = KVM_IRQ_LINE_STATUS; |
8732fbd2 PM |
1577 | } |
1578 | ||
df9c8b75 JJ |
1579 | #ifdef KVM_CAP_READONLY_MEM |
1580 | kvm_readonly_mem_allowed = | |
1581 | (kvm_check_extension(s, KVM_CAP_READONLY_MEM) > 0); | |
1582 | #endif | |
1583 | ||
69e03ae6 NN |
1584 | kvm_eventfds_allowed = |
1585 | (kvm_check_extension(s, KVM_CAP_IOEVENTFD) > 0); | |
1586 | ||
cad1e282 | 1587 | ret = kvm_arch_init(s); |
a426e122 | 1588 | if (ret < 0) { |
05330448 | 1589 | goto err; |
a426e122 | 1590 | } |
05330448 | 1591 | |
84b058d7 JK |
1592 | ret = kvm_irqchip_create(s); |
1593 | if (ret < 0) { | |
1594 | goto err; | |
1595 | } | |
1596 | ||
05330448 | 1597 | kvm_state = s; |
f6790af6 AK |
1598 | memory_listener_register(&kvm_memory_listener, &address_space_memory); |
1599 | memory_listener_register(&kvm_io_listener, &address_space_io); | |
05330448 | 1600 | |
d2f2b8a7 SH |
1601 | s->many_ioeventfds = kvm_check_many_ioeventfds(); |
1602 | ||
aa7f74d1 JK |
1603 | cpu_interrupt_handler = kvm_handle_interrupt; |
1604 | ||
05330448 AL |
1605 | return 0; |
1606 | ||
1607 | err: | |
0e1dac6c | 1608 | assert(ret < 0); |
6d1cc321 SW |
1609 | if (s->vmfd >= 0) { |
1610 | close(s->vmfd); | |
1611 | } | |
1612 | if (s->fd != -1) { | |
1613 | close(s->fd); | |
05330448 | 1614 | } |
fb541ca5 | 1615 | g_free(s->slots); |
05330448 AL |
1616 | |
1617 | return ret; | |
1618 | } | |
1619 | ||
aed6efb9 JH |
1620 | void kvm_set_sigmask_len(KVMState *s, unsigned int sigmask_len) |
1621 | { | |
1622 | s->sigmask_len = sigmask_len; | |
1623 | } | |
1624 | ||
b30e93e9 JK |
1625 | static void kvm_handle_io(uint16_t port, void *data, int direction, int size, |
1626 | uint32_t count) | |
05330448 AL |
1627 | { |
1628 | int i; | |
1629 | uint8_t *ptr = data; | |
1630 | ||
1631 | for (i = 0; i < count; i++) { | |
354678c5 JK |
1632 | address_space_rw(&address_space_io, port, ptr, size, |
1633 | direction == KVM_EXIT_IO_OUT); | |
05330448 AL |
1634 | ptr += size; |
1635 | } | |
05330448 AL |
1636 | } |
1637 | ||
5326ab55 | 1638 | static int kvm_handle_internal_error(CPUState *cpu, struct kvm_run *run) |
7c80eef8 | 1639 | { |
977c7b6d RK |
1640 | fprintf(stderr, "KVM internal error. Suberror: %d\n", |
1641 | run->internal.suberror); | |
1642 | ||
7c80eef8 MT |
1643 | if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) { |
1644 | int i; | |
1645 | ||
7c80eef8 MT |
1646 | for (i = 0; i < run->internal.ndata; ++i) { |
1647 | fprintf(stderr, "extra data[%d]: %"PRIx64"\n", | |
1648 | i, (uint64_t)run->internal.data[i]); | |
1649 | } | |
1650 | } | |
7c80eef8 MT |
1651 | if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) { |
1652 | fprintf(stderr, "emulation failure\n"); | |
20d695a9 | 1653 | if (!kvm_arch_stop_on_emulation_error(cpu)) { |
878096ee | 1654 | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_CODE); |
d73cd8f4 | 1655 | return EXCP_INTERRUPT; |
a426e122 | 1656 | } |
7c80eef8 MT |
1657 | } |
1658 | /* FIXME: Should trigger a qmp message to let management know | |
1659 | * something went wrong. | |
1660 | */ | |
73aaec4a | 1661 | return -1; |
7c80eef8 | 1662 | } |
7c80eef8 | 1663 | |
62a2744c | 1664 | void kvm_flush_coalesced_mmio_buffer(void) |
f65ed4c1 | 1665 | { |
f65ed4c1 | 1666 | KVMState *s = kvm_state; |
1cae88b9 AK |
1667 | |
1668 | if (s->coalesced_flush_in_progress) { | |
1669 | return; | |
1670 | } | |
1671 | ||
1672 | s->coalesced_flush_in_progress = true; | |
1673 | ||
62a2744c SY |
1674 | if (s->coalesced_mmio_ring) { |
1675 | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring; | |
f65ed4c1 AL |
1676 | while (ring->first != ring->last) { |
1677 | struct kvm_coalesced_mmio *ent; | |
1678 | ||
1679 | ent = &ring->coalesced_mmio[ring->first]; | |
1680 | ||
1681 | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); | |
85199474 | 1682 | smp_wmb(); |
f65ed4c1 AL |
1683 | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX; |
1684 | } | |
1685 | } | |
1cae88b9 AK |
1686 | |
1687 | s->coalesced_flush_in_progress = false; | |
f65ed4c1 AL |
1688 | } |
1689 | ||
20d695a9 | 1690 | static void do_kvm_cpu_synchronize_state(void *arg) |
4c0960c0 | 1691 | { |
20d695a9 | 1692 | CPUState *cpu = arg; |
2705d56a | 1693 | |
20d695a9 AF |
1694 | if (!cpu->kvm_vcpu_dirty) { |
1695 | kvm_arch_get_registers(cpu); | |
1696 | cpu->kvm_vcpu_dirty = true; | |
4c0960c0 AK |
1697 | } |
1698 | } | |
1699 | ||
dd1750d7 | 1700 | void kvm_cpu_synchronize_state(CPUState *cpu) |
2705d56a | 1701 | { |
20d695a9 AF |
1702 | if (!cpu->kvm_vcpu_dirty) { |
1703 | run_on_cpu(cpu, do_kvm_cpu_synchronize_state, cpu); | |
a426e122 | 1704 | } |
2705d56a JK |
1705 | } |
1706 | ||
c8e2085d | 1707 | static void do_kvm_cpu_synchronize_post_reset(void *arg) |
ea375f9a | 1708 | { |
c8e2085d DH |
1709 | CPUState *cpu = arg; |
1710 | ||
20d695a9 AF |
1711 | kvm_arch_put_registers(cpu, KVM_PUT_RESET_STATE); |
1712 | cpu->kvm_vcpu_dirty = false; | |
ea375f9a JK |
1713 | } |
1714 | ||
c8e2085d DH |
1715 | void kvm_cpu_synchronize_post_reset(CPUState *cpu) |
1716 | { | |
1717 | run_on_cpu(cpu, do_kvm_cpu_synchronize_post_reset, cpu); | |
1718 | } | |
1719 | ||
1720 | static void do_kvm_cpu_synchronize_post_init(void *arg) | |
ea375f9a | 1721 | { |
c8e2085d DH |
1722 | CPUState *cpu = arg; |
1723 | ||
20d695a9 AF |
1724 | kvm_arch_put_registers(cpu, KVM_PUT_FULL_STATE); |
1725 | cpu->kvm_vcpu_dirty = false; | |
ea375f9a JK |
1726 | } |
1727 | ||
c8e2085d DH |
1728 | void kvm_cpu_synchronize_post_init(CPUState *cpu) |
1729 | { | |
1730 | run_on_cpu(cpu, do_kvm_cpu_synchronize_post_init, cpu); | |
1731 | } | |
1732 | ||
de9d61e8 MT |
1733 | void kvm_cpu_clean_state(CPUState *cpu) |
1734 | { | |
1735 | cpu->kvm_vcpu_dirty = false; | |
1736 | } | |
1737 | ||
1458c363 | 1738 | int kvm_cpu_exec(CPUState *cpu) |
05330448 | 1739 | { |
f7575c96 | 1740 | struct kvm_run *run = cpu->kvm_run; |
7cbb533f | 1741 | int ret, run_ret; |
05330448 | 1742 | |
8c0d577e | 1743 | DPRINTF("kvm_cpu_exec()\n"); |
05330448 | 1744 | |
20d695a9 | 1745 | if (kvm_arch_process_async_events(cpu)) { |
fcd7d003 | 1746 | cpu->exit_request = 0; |
6792a57b | 1747 | return EXCP_HLT; |
9ccfac9e | 1748 | } |
0af691d7 | 1749 | |
9ccfac9e | 1750 | do { |
20d695a9 AF |
1751 | if (cpu->kvm_vcpu_dirty) { |
1752 | kvm_arch_put_registers(cpu, KVM_PUT_RUNTIME_STATE); | |
1753 | cpu->kvm_vcpu_dirty = false; | |
4c0960c0 AK |
1754 | } |
1755 | ||
20d695a9 | 1756 | kvm_arch_pre_run(cpu, run); |
fcd7d003 | 1757 | if (cpu->exit_request) { |
9ccfac9e JK |
1758 | DPRINTF("interrupt exit requested\n"); |
1759 | /* | |
1760 | * KVM requires us to reenter the kernel after IO exits to complete | |
1761 | * instruction emulation. This self-signal will ensure that we | |
1762 | * leave ASAP again. | |
1763 | */ | |
1764 | qemu_cpu_kick_self(); | |
1765 | } | |
d549db5a | 1766 | qemu_mutex_unlock_iothread(); |
9ccfac9e | 1767 | |
1bc22652 | 1768 | run_ret = kvm_vcpu_ioctl(cpu, KVM_RUN, 0); |
9ccfac9e | 1769 | |
d549db5a | 1770 | qemu_mutex_lock_iothread(); |
20d695a9 | 1771 | kvm_arch_post_run(cpu, run); |
05330448 | 1772 | |
7cbb533f | 1773 | if (run_ret < 0) { |
dc77d341 JK |
1774 | if (run_ret == -EINTR || run_ret == -EAGAIN) { |
1775 | DPRINTF("io window exit\n"); | |
d73cd8f4 | 1776 | ret = EXCP_INTERRUPT; |
dc77d341 JK |
1777 | break; |
1778 | } | |
7b011fbc ME |
1779 | fprintf(stderr, "error: kvm run failed %s\n", |
1780 | strerror(-run_ret)); | |
a85e130e PB |
1781 | ret = -1; |
1782 | break; | |
05330448 AL |
1783 | } |
1784 | ||
b76ac80a | 1785 | trace_kvm_run_exit(cpu->cpu_index, run->exit_reason); |
05330448 AL |
1786 | switch (run->exit_reason) { |
1787 | case KVM_EXIT_IO: | |
8c0d577e | 1788 | DPRINTF("handle_io\n"); |
b30e93e9 JK |
1789 | kvm_handle_io(run->io.port, |
1790 | (uint8_t *)run + run->io.data_offset, | |
1791 | run->io.direction, | |
1792 | run->io.size, | |
1793 | run->io.count); | |
d73cd8f4 | 1794 | ret = 0; |
05330448 AL |
1795 | break; |
1796 | case KVM_EXIT_MMIO: | |
8c0d577e | 1797 | DPRINTF("handle_mmio\n"); |
05330448 AL |
1798 | cpu_physical_memory_rw(run->mmio.phys_addr, |
1799 | run->mmio.data, | |
1800 | run->mmio.len, | |
1801 | run->mmio.is_write); | |
d73cd8f4 | 1802 | ret = 0; |
05330448 AL |
1803 | break; |
1804 | case KVM_EXIT_IRQ_WINDOW_OPEN: | |
8c0d577e | 1805 | DPRINTF("irq_window_open\n"); |
d73cd8f4 | 1806 | ret = EXCP_INTERRUPT; |
05330448 AL |
1807 | break; |
1808 | case KVM_EXIT_SHUTDOWN: | |
8c0d577e | 1809 | DPRINTF("shutdown\n"); |
05330448 | 1810 | qemu_system_reset_request(); |
d73cd8f4 | 1811 | ret = EXCP_INTERRUPT; |
05330448 AL |
1812 | break; |
1813 | case KVM_EXIT_UNKNOWN: | |
bb44e0d1 JK |
1814 | fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n", |
1815 | (uint64_t)run->hw.hardware_exit_reason); | |
73aaec4a | 1816 | ret = -1; |
05330448 | 1817 | break; |
7c80eef8 | 1818 | case KVM_EXIT_INTERNAL_ERROR: |
5326ab55 | 1819 | ret = kvm_handle_internal_error(cpu, run); |
7c80eef8 | 1820 | break; |
99040447 PS |
1821 | case KVM_EXIT_SYSTEM_EVENT: |
1822 | switch (run->system_event.type) { | |
1823 | case KVM_SYSTEM_EVENT_SHUTDOWN: | |
1824 | qemu_system_shutdown_request(); | |
1825 | ret = EXCP_INTERRUPT; | |
1826 | break; | |
1827 | case KVM_SYSTEM_EVENT_RESET: | |
1828 | qemu_system_reset_request(); | |
1829 | ret = EXCP_INTERRUPT; | |
1830 | break; | |
1831 | default: | |
1832 | DPRINTF("kvm_arch_handle_exit\n"); | |
1833 | ret = kvm_arch_handle_exit(cpu, run); | |
1834 | break; | |
1835 | } | |
1836 | break; | |
05330448 | 1837 | default: |
8c0d577e | 1838 | DPRINTF("kvm_arch_handle_exit\n"); |
20d695a9 | 1839 | ret = kvm_arch_handle_exit(cpu, run); |
05330448 AL |
1840 | break; |
1841 | } | |
d73cd8f4 | 1842 | } while (ret == 0); |
05330448 | 1843 | |
73aaec4a | 1844 | if (ret < 0) { |
878096ee | 1845 | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_CODE); |
0461d5a6 | 1846 | vm_stop(RUN_STATE_INTERNAL_ERROR); |
becfc390 AL |
1847 | } |
1848 | ||
fcd7d003 | 1849 | cpu->exit_request = 0; |
05330448 AL |
1850 | return ret; |
1851 | } | |
1852 | ||
984b5181 | 1853 | int kvm_ioctl(KVMState *s, int type, ...) |
05330448 AL |
1854 | { |
1855 | int ret; | |
984b5181 AL |
1856 | void *arg; |
1857 | va_list ap; | |
05330448 | 1858 | |
984b5181 AL |
1859 | va_start(ap, type); |
1860 | arg = va_arg(ap, void *); | |
1861 | va_end(ap); | |
1862 | ||
9c775729 | 1863 | trace_kvm_ioctl(type, arg); |
984b5181 | 1864 | ret = ioctl(s->fd, type, arg); |
a426e122 | 1865 | if (ret == -1) { |
05330448 | 1866 | ret = -errno; |
a426e122 | 1867 | } |
05330448 AL |
1868 | return ret; |
1869 | } | |
1870 | ||
984b5181 | 1871 | int kvm_vm_ioctl(KVMState *s, int type, ...) |
05330448 AL |
1872 | { |
1873 | int ret; | |
984b5181 AL |
1874 | void *arg; |
1875 | va_list ap; | |
1876 | ||
1877 | va_start(ap, type); | |
1878 | arg = va_arg(ap, void *); | |
1879 | va_end(ap); | |
05330448 | 1880 | |
9c775729 | 1881 | trace_kvm_vm_ioctl(type, arg); |
984b5181 | 1882 | ret = ioctl(s->vmfd, type, arg); |
a426e122 | 1883 | if (ret == -1) { |
05330448 | 1884 | ret = -errno; |
a426e122 | 1885 | } |
05330448 AL |
1886 | return ret; |
1887 | } | |
1888 | ||
1bc22652 | 1889 | int kvm_vcpu_ioctl(CPUState *cpu, int type, ...) |
05330448 AL |
1890 | { |
1891 | int ret; | |
984b5181 AL |
1892 | void *arg; |
1893 | va_list ap; | |
1894 | ||
1895 | va_start(ap, type); | |
1896 | arg = va_arg(ap, void *); | |
1897 | va_end(ap); | |
05330448 | 1898 | |
9c775729 | 1899 | trace_kvm_vcpu_ioctl(cpu->cpu_index, type, arg); |
8737c51c | 1900 | ret = ioctl(cpu->kvm_fd, type, arg); |
a426e122 | 1901 | if (ret == -1) { |
05330448 | 1902 | ret = -errno; |
a426e122 | 1903 | } |
05330448 AL |
1904 | return ret; |
1905 | } | |
bd322087 | 1906 | |
0a6a7cca CD |
1907 | int kvm_device_ioctl(int fd, int type, ...) |
1908 | { | |
1909 | int ret; | |
1910 | void *arg; | |
1911 | va_list ap; | |
1912 | ||
1913 | va_start(ap, type); | |
1914 | arg = va_arg(ap, void *); | |
1915 | va_end(ap); | |
1916 | ||
1917 | trace_kvm_device_ioctl(fd, type, arg); | |
1918 | ret = ioctl(fd, type, arg); | |
1919 | if (ret == -1) { | |
1920 | ret = -errno; | |
1921 | } | |
1922 | return ret; | |
1923 | } | |
1924 | ||
bd322087 AL |
1925 | int kvm_has_sync_mmu(void) |
1926 | { | |
94a8d39a | 1927 | return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU); |
bd322087 | 1928 | } |
e22a25c9 | 1929 | |
a0fb002c JK |
1930 | int kvm_has_vcpu_events(void) |
1931 | { | |
1932 | return kvm_state->vcpu_events; | |
1933 | } | |
1934 | ||
b0b1d690 JK |
1935 | int kvm_has_robust_singlestep(void) |
1936 | { | |
1937 | return kvm_state->robust_singlestep; | |
1938 | } | |
1939 | ||
ff44f1a3 JK |
1940 | int kvm_has_debugregs(void) |
1941 | { | |
1942 | return kvm_state->debugregs; | |
1943 | } | |
1944 | ||
f1665b21 SY |
1945 | int kvm_has_xsave(void) |
1946 | { | |
1947 | return kvm_state->xsave; | |
1948 | } | |
1949 | ||
1950 | int kvm_has_xcrs(void) | |
1951 | { | |
1952 | return kvm_state->xcrs; | |
1953 | } | |
1954 | ||
8a7c7393 JK |
1955 | int kvm_has_pit_state2(void) |
1956 | { | |
1957 | return kvm_state->pit_state2; | |
1958 | } | |
1959 | ||
d2f2b8a7 SH |
1960 | int kvm_has_many_ioeventfds(void) |
1961 | { | |
1962 | if (!kvm_enabled()) { | |
1963 | return 0; | |
1964 | } | |
1965 | return kvm_state->many_ioeventfds; | |
1966 | } | |
1967 | ||
84b058d7 JK |
1968 | int kvm_has_gsi_routing(void) |
1969 | { | |
a9c5eb0d | 1970 | #ifdef KVM_CAP_IRQ_ROUTING |
84b058d7 | 1971 | return kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING); |
a9c5eb0d AG |
1972 | #else |
1973 | return false; | |
1974 | #endif | |
84b058d7 JK |
1975 | } |
1976 | ||
3ab73842 JK |
1977 | int kvm_has_intx_set_mask(void) |
1978 | { | |
1979 | return kvm_state->intx_set_mask; | |
1980 | } | |
1981 | ||
6f0437e8 JK |
1982 | void kvm_setup_guest_memory(void *start, size_t size) |
1983 | { | |
1984 | if (!kvm_has_sync_mmu()) { | |
e78815a5 | 1985 | int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK); |
6f0437e8 JK |
1986 | |
1987 | if (ret) { | |
e78815a5 AF |
1988 | perror("qemu_madvise"); |
1989 | fprintf(stderr, | |
1990 | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n"); | |
6f0437e8 JK |
1991 | exit(1); |
1992 | } | |
6f0437e8 JK |
1993 | } |
1994 | } | |
1995 | ||
e22a25c9 | 1996 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
a60f24b5 | 1997 | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *cpu, |
e22a25c9 AL |
1998 | target_ulong pc) |
1999 | { | |
2000 | struct kvm_sw_breakpoint *bp; | |
2001 | ||
a60f24b5 | 2002 | QTAILQ_FOREACH(bp, &cpu->kvm_state->kvm_sw_breakpoints, entry) { |
a426e122 | 2003 | if (bp->pc == pc) { |
e22a25c9 | 2004 | return bp; |
a426e122 | 2005 | } |
e22a25c9 AL |
2006 | } |
2007 | return NULL; | |
2008 | } | |
2009 | ||
a60f24b5 | 2010 | int kvm_sw_breakpoints_active(CPUState *cpu) |
e22a25c9 | 2011 | { |
a60f24b5 | 2012 | return !QTAILQ_EMPTY(&cpu->kvm_state->kvm_sw_breakpoints); |
e22a25c9 AL |
2013 | } |
2014 | ||
452e4751 GC |
2015 | struct kvm_set_guest_debug_data { |
2016 | struct kvm_guest_debug dbg; | |
a60f24b5 | 2017 | CPUState *cpu; |
452e4751 GC |
2018 | int err; |
2019 | }; | |
2020 | ||
2021 | static void kvm_invoke_set_guest_debug(void *data) | |
2022 | { | |
2023 | struct kvm_set_guest_debug_data *dbg_data = data; | |
b3807725 | 2024 | |
a60f24b5 AF |
2025 | dbg_data->err = kvm_vcpu_ioctl(dbg_data->cpu, KVM_SET_GUEST_DEBUG, |
2026 | &dbg_data->dbg); | |
452e4751 GC |
2027 | } |
2028 | ||
38e478ec | 2029 | int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap) |
e22a25c9 | 2030 | { |
452e4751 | 2031 | struct kvm_set_guest_debug_data data; |
e22a25c9 | 2032 | |
b0b1d690 | 2033 | data.dbg.control = reinject_trap; |
e22a25c9 | 2034 | |
ed2803da | 2035 | if (cpu->singlestep_enabled) { |
b0b1d690 JK |
2036 | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; |
2037 | } | |
20d695a9 | 2038 | kvm_arch_update_guest_debug(cpu, &data.dbg); |
a60f24b5 | 2039 | data.cpu = cpu; |
e22a25c9 | 2040 | |
f100f0b3 | 2041 | run_on_cpu(cpu, kvm_invoke_set_guest_debug, &data); |
452e4751 | 2042 | return data.err; |
e22a25c9 AL |
2043 | } |
2044 | ||
62278814 | 2045 | int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr, |
e22a25c9 AL |
2046 | target_ulong len, int type) |
2047 | { | |
2048 | struct kvm_sw_breakpoint *bp; | |
e22a25c9 AL |
2049 | int err; |
2050 | ||
2051 | if (type == GDB_BREAKPOINT_SW) { | |
80b7cd73 | 2052 | bp = kvm_find_sw_breakpoint(cpu, addr); |
e22a25c9 AL |
2053 | if (bp) { |
2054 | bp->use_count++; | |
2055 | return 0; | |
2056 | } | |
2057 | ||
7267c094 | 2058 | bp = g_malloc(sizeof(struct kvm_sw_breakpoint)); |
a426e122 | 2059 | if (!bp) { |
e22a25c9 | 2060 | return -ENOMEM; |
a426e122 | 2061 | } |
e22a25c9 AL |
2062 | |
2063 | bp->pc = addr; | |
2064 | bp->use_count = 1; | |
80b7cd73 | 2065 | err = kvm_arch_insert_sw_breakpoint(cpu, bp); |
e22a25c9 | 2066 | if (err) { |
7267c094 | 2067 | g_free(bp); |
e22a25c9 AL |
2068 | return err; |
2069 | } | |
2070 | ||
80b7cd73 | 2071 | QTAILQ_INSERT_HEAD(&cpu->kvm_state->kvm_sw_breakpoints, bp, entry); |
e22a25c9 AL |
2072 | } else { |
2073 | err = kvm_arch_insert_hw_breakpoint(addr, len, type); | |
a426e122 | 2074 | if (err) { |
e22a25c9 | 2075 | return err; |
a426e122 | 2076 | } |
e22a25c9 AL |
2077 | } |
2078 | ||
bdc44640 | 2079 | CPU_FOREACH(cpu) { |
38e478ec | 2080 | err = kvm_update_guest_debug(cpu, 0); |
a426e122 | 2081 | if (err) { |
e22a25c9 | 2082 | return err; |
a426e122 | 2083 | } |
e22a25c9 AL |
2084 | } |
2085 | return 0; | |
2086 | } | |
2087 | ||
62278814 | 2088 | int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr, |
e22a25c9 AL |
2089 | target_ulong len, int type) |
2090 | { | |
2091 | struct kvm_sw_breakpoint *bp; | |
e22a25c9 AL |
2092 | int err; |
2093 | ||
2094 | if (type == GDB_BREAKPOINT_SW) { | |
80b7cd73 | 2095 | bp = kvm_find_sw_breakpoint(cpu, addr); |
a426e122 | 2096 | if (!bp) { |
e22a25c9 | 2097 | return -ENOENT; |
a426e122 | 2098 | } |
e22a25c9 AL |
2099 | |
2100 | if (bp->use_count > 1) { | |
2101 | bp->use_count--; | |
2102 | return 0; | |
2103 | } | |
2104 | ||
80b7cd73 | 2105 | err = kvm_arch_remove_sw_breakpoint(cpu, bp); |
a426e122 | 2106 | if (err) { |
e22a25c9 | 2107 | return err; |
a426e122 | 2108 | } |
e22a25c9 | 2109 | |
80b7cd73 | 2110 | QTAILQ_REMOVE(&cpu->kvm_state->kvm_sw_breakpoints, bp, entry); |
7267c094 | 2111 | g_free(bp); |
e22a25c9 AL |
2112 | } else { |
2113 | err = kvm_arch_remove_hw_breakpoint(addr, len, type); | |
a426e122 | 2114 | if (err) { |
e22a25c9 | 2115 | return err; |
a426e122 | 2116 | } |
e22a25c9 AL |
2117 | } |
2118 | ||
bdc44640 | 2119 | CPU_FOREACH(cpu) { |
38e478ec | 2120 | err = kvm_update_guest_debug(cpu, 0); |
a426e122 | 2121 | if (err) { |
e22a25c9 | 2122 | return err; |
a426e122 | 2123 | } |
e22a25c9 AL |
2124 | } |
2125 | return 0; | |
2126 | } | |
2127 | ||
1d5791f4 | 2128 | void kvm_remove_all_breakpoints(CPUState *cpu) |
e22a25c9 AL |
2129 | { |
2130 | struct kvm_sw_breakpoint *bp, *next; | |
80b7cd73 | 2131 | KVMState *s = cpu->kvm_state; |
dc54e252 | 2132 | CPUState *tmpcpu; |
e22a25c9 | 2133 | |
72cf2d4f | 2134 | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
80b7cd73 | 2135 | if (kvm_arch_remove_sw_breakpoint(cpu, bp) != 0) { |
e22a25c9 | 2136 | /* Try harder to find a CPU that currently sees the breakpoint. */ |
dc54e252 CG |
2137 | CPU_FOREACH(tmpcpu) { |
2138 | if (kvm_arch_remove_sw_breakpoint(tmpcpu, bp) == 0) { | |
e22a25c9 | 2139 | break; |
a426e122 | 2140 | } |
e22a25c9 AL |
2141 | } |
2142 | } | |
78021d6d JK |
2143 | QTAILQ_REMOVE(&s->kvm_sw_breakpoints, bp, entry); |
2144 | g_free(bp); | |
e22a25c9 AL |
2145 | } |
2146 | kvm_arch_remove_all_hw_breakpoints(); | |
2147 | ||
bdc44640 | 2148 | CPU_FOREACH(cpu) { |
38e478ec | 2149 | kvm_update_guest_debug(cpu, 0); |
a426e122 | 2150 | } |
e22a25c9 AL |
2151 | } |
2152 | ||
2153 | #else /* !KVM_CAP_SET_GUEST_DEBUG */ | |
2154 | ||
38e478ec | 2155 | int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap) |
e22a25c9 AL |
2156 | { |
2157 | return -EINVAL; | |
2158 | } | |
2159 | ||
62278814 | 2160 | int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr, |
e22a25c9 AL |
2161 | target_ulong len, int type) |
2162 | { | |
2163 | return -EINVAL; | |
2164 | } | |
2165 | ||
62278814 | 2166 | int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr, |
e22a25c9 AL |
2167 | target_ulong len, int type) |
2168 | { | |
2169 | return -EINVAL; | |
2170 | } | |
2171 | ||
1d5791f4 | 2172 | void kvm_remove_all_breakpoints(CPUState *cpu) |
e22a25c9 AL |
2173 | { |
2174 | } | |
2175 | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ | |
cc84de95 | 2176 | |
491d6e80 | 2177 | int kvm_set_signal_mask(CPUState *cpu, const sigset_t *sigset) |
cc84de95 | 2178 | { |
aed6efb9 | 2179 | KVMState *s = kvm_state; |
cc84de95 MT |
2180 | struct kvm_signal_mask *sigmask; |
2181 | int r; | |
2182 | ||
a426e122 | 2183 | if (!sigset) { |
1bc22652 | 2184 | return kvm_vcpu_ioctl(cpu, KVM_SET_SIGNAL_MASK, NULL); |
a426e122 | 2185 | } |
cc84de95 | 2186 | |
7267c094 | 2187 | sigmask = g_malloc(sizeof(*sigmask) + sizeof(*sigset)); |
cc84de95 | 2188 | |
aed6efb9 | 2189 | sigmask->len = s->sigmask_len; |
cc84de95 | 2190 | memcpy(sigmask->sigset, sigset, sizeof(*sigset)); |
1bc22652 | 2191 | r = kvm_vcpu_ioctl(cpu, KVM_SET_SIGNAL_MASK, sigmask); |
7267c094 | 2192 | g_free(sigmask); |
cc84de95 MT |
2193 | |
2194 | return r; | |
2195 | } | |
290adf38 | 2196 | int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr) |
a1b87fe0 | 2197 | { |
20d695a9 | 2198 | return kvm_arch_on_sigbus_vcpu(cpu, code, addr); |
a1b87fe0 JK |
2199 | } |
2200 | ||
2201 | int kvm_on_sigbus(int code, void *addr) | |
2202 | { | |
2203 | return kvm_arch_on_sigbus(code, addr); | |
2204 | } | |
0a6a7cca CD |
2205 | |
2206 | int kvm_create_device(KVMState *s, uint64_t type, bool test) | |
2207 | { | |
2208 | int ret; | |
2209 | struct kvm_create_device create_dev; | |
2210 | ||
2211 | create_dev.type = type; | |
2212 | create_dev.fd = -1; | |
2213 | create_dev.flags = test ? KVM_CREATE_DEVICE_TEST : 0; | |
2214 | ||
2215 | if (!kvm_check_extension(s, KVM_CAP_DEVICE_CTRL)) { | |
2216 | return -ENOTSUP; | |
2217 | } | |
2218 | ||
2219 | ret = kvm_vm_ioctl(s, KVM_CREATE_DEVICE, &create_dev); | |
2220 | if (ret) { | |
2221 | return ret; | |
2222 | } | |
2223 | ||
2224 | return test ? 0 : create_dev.fd; | |
2225 | } | |
ada4135f CH |
2226 | |
2227 | int kvm_set_one_reg(CPUState *cs, uint64_t id, void *source) | |
2228 | { | |
2229 | struct kvm_one_reg reg; | |
2230 | int r; | |
2231 | ||
2232 | reg.id = id; | |
2233 | reg.addr = (uintptr_t) source; | |
2234 | r = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); | |
2235 | if (r) { | |
2236 | trace_kvm_failed_reg_set(id, strerror(r)); | |
2237 | } | |
2238 | return r; | |
2239 | } | |
2240 | ||
2241 | int kvm_get_one_reg(CPUState *cs, uint64_t id, void *target) | |
2242 | { | |
2243 | struct kvm_one_reg reg; | |
2244 | int r; | |
2245 | ||
2246 | reg.id = id; | |
2247 | reg.addr = (uintptr_t) target; | |
2248 | r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); | |
2249 | if (r) { | |
2250 | trace_kvm_failed_reg_get(id, strerror(r)); | |
2251 | } | |
2252 | return r; | |
2253 | } | |
782c3f29 EH |
2254 | |
2255 | static void kvm_accel_class_init(ObjectClass *oc, void *data) | |
2256 | { | |
2257 | AccelClass *ac = ACCEL_CLASS(oc); | |
2258 | ac->name = "KVM"; | |
0d15da8e | 2259 | ac->init_machine = kvm_init; |
782c3f29 EH |
2260 | ac->allowed = &kvm_allowed; |
2261 | } | |
2262 | ||
2263 | static const TypeInfo kvm_accel_type = { | |
2264 | .name = TYPE_KVM_ACCEL, | |
2265 | .parent = TYPE_ACCEL, | |
2266 | .class_init = kvm_accel_class_init, | |
fc02086b | 2267 | .instance_size = sizeof(KVMState), |
782c3f29 EH |
2268 | }; |
2269 | ||
2270 | static void kvm_type_init(void) | |
2271 | { | |
2272 | type_register_static(&kvm_accel_type); | |
2273 | } | |
2274 | ||
2275 | type_init(kvm_type_init); |