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Commit | Line | Data |
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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 | ||
d38ea87a | 16 | #include "qemu/osdep.h" |
05330448 AL |
17 | #include <sys/ioctl.h> |
18 | #include <sys/mman.h> | |
19 | ||
20 | #include <linux/kvm.h> | |
21 | ||
22 | #include "qemu-common.h" | |
1de7afc9 PB |
23 | #include "qemu/atomic.h" |
24 | #include "qemu/option.h" | |
25 | #include "qemu/config-file.h" | |
4b3cfe72 | 26 | #include "qemu/error-report.h" |
d33a1810 | 27 | #include "hw/hw.h" |
a2cb15b0 | 28 | #include "hw/pci/msi.h" |
d426d9fb | 29 | #include "hw/s390x/adapter.h" |
022c62cb | 30 | #include "exec/gdbstub.h" |
8571ed35 | 31 | #include "sysemu/kvm_int.h" |
1de7afc9 | 32 | #include "qemu/bswap.h" |
022c62cb | 33 | #include "exec/memory.h" |
747afd5b | 34 | #include "exec/ram_addr.h" |
022c62cb | 35 | #include "exec/address-spaces.h" |
1de7afc9 | 36 | #include "qemu/event_notifier.h" |
9c775729 | 37 | #include "trace.h" |
197e3524 | 38 | #include "hw/irq.h" |
05330448 | 39 | |
135a129a AK |
40 | #include "hw/boards.h" |
41 | ||
d2f2b8a7 SH |
42 | /* This check must be after config-host.h is included */ |
43 | #ifdef CONFIG_EVENTFD | |
44 | #include <sys/eventfd.h> | |
45 | #endif | |
46 | ||
bc92e4e9 AJ |
47 | /* KVM uses PAGE_SIZE in its definition of KVM_COALESCED_MMIO_MAX. We |
48 | * need to use the real host PAGE_SIZE, as that's what KVM will use. | |
49 | */ | |
50 | #define PAGE_SIZE getpagesize() | |
f65ed4c1 | 51 | |
05330448 AL |
52 | //#define DEBUG_KVM |
53 | ||
54 | #ifdef DEBUG_KVM | |
8c0d577e | 55 | #define DPRINTF(fmt, ...) \ |
05330448 AL |
56 | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
57 | #else | |
8c0d577e | 58 | #define DPRINTF(fmt, ...) \ |
05330448 AL |
59 | do { } while (0) |
60 | #endif | |
61 | ||
04fa27f5 JK |
62 | #define KVM_MSI_HASHTAB_SIZE 256 |
63 | ||
4c055ab5 GZ |
64 | struct KVMParkedVcpu { |
65 | unsigned long vcpu_id; | |
66 | int kvm_fd; | |
67 | QLIST_ENTRY(KVMParkedVcpu) node; | |
68 | }; | |
69 | ||
9d1c35df | 70 | struct KVMState |
05330448 | 71 | { |
fc02086b EH |
72 | AccelState parent_obj; |
73 | ||
fb541ca5 | 74 | int nr_slots; |
05330448 AL |
75 | int fd; |
76 | int vmfd; | |
f65ed4c1 | 77 | int coalesced_mmio; |
62a2744c | 78 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
1cae88b9 | 79 | bool coalesced_flush_in_progress; |
e69917e2 | 80 | int broken_set_mem_region; |
a0fb002c | 81 | int vcpu_events; |
b0b1d690 | 82 | int robust_singlestep; |
ff44f1a3 | 83 | int debugregs; |
e22a25c9 AL |
84 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
85 | struct kvm_sw_breakpoint_head kvm_sw_breakpoints; | |
86 | #endif | |
d2f2b8a7 | 87 | int many_ioeventfds; |
3ab73842 | 88 | int intx_set_mask; |
92e4b519 DG |
89 | /* The man page (and posix) say ioctl numbers are signed int, but |
90 | * they're not. Linux, glibc and *BSD all treat ioctl numbers as | |
91 | * unsigned, and treating them as signed here can break things */ | |
e333cd69 | 92 | unsigned irq_set_ioctl; |
aed6efb9 | 93 | unsigned int sigmask_len; |
197e3524 | 94 | GHashTable *gsimap; |
84b058d7 JK |
95 | #ifdef KVM_CAP_IRQ_ROUTING |
96 | struct kvm_irq_routing *irq_routes; | |
97 | int nr_allocated_irq_routes; | |
8269fb70 | 98 | unsigned long *used_gsi_bitmap; |
4e2e4e63 | 99 | unsigned int gsi_count; |
04fa27f5 | 100 | QTAILQ_HEAD(msi_hashtab, KVMMSIRoute) msi_hashtab[KVM_MSI_HASHTAB_SIZE]; |
84b058d7 | 101 | #endif |
7bbda04c | 102 | KVMMemoryListener memory_listener; |
4c055ab5 | 103 | QLIST_HEAD(, KVMParkedVcpu) kvm_parked_vcpus; |
9d1c35df | 104 | }; |
05330448 | 105 | |
6a7af8cb | 106 | KVMState *kvm_state; |
3d4b2649 | 107 | bool kvm_kernel_irqchip; |
15eafc2e | 108 | bool kvm_split_irqchip; |
7ae26bd4 | 109 | bool kvm_async_interrupts_allowed; |
215e79c0 | 110 | bool kvm_halt_in_kernel_allowed; |
69e03ae6 | 111 | bool kvm_eventfds_allowed; |
cc7e0ddf | 112 | bool kvm_irqfds_allowed; |
f41389ae | 113 | bool kvm_resamplefds_allowed; |
614e41bc | 114 | bool kvm_msi_via_irqfd_allowed; |
f3e1bed8 | 115 | bool kvm_gsi_routing_allowed; |
76fe21de | 116 | bool kvm_gsi_direct_mapping; |
13eed94e | 117 | bool kvm_allowed; |
df9c8b75 | 118 | bool kvm_readonly_mem_allowed; |
d0a073a1 | 119 | bool kvm_vm_attributes_allowed; |
50bf31b9 | 120 | bool kvm_direct_msi_allowed; |
35108223 | 121 | bool kvm_ioeventfd_any_length_allowed; |
05330448 | 122 | |
94a8d39a JK |
123 | static const KVMCapabilityInfo kvm_required_capabilites[] = { |
124 | KVM_CAP_INFO(USER_MEMORY), | |
125 | KVM_CAP_INFO(DESTROY_MEMORY_REGION_WORKS), | |
126 | KVM_CAP_LAST_INFO | |
127 | }; | |
128 | ||
7bbda04c | 129 | static KVMSlot *kvm_get_free_slot(KVMMemoryListener *kml) |
05330448 | 130 | { |
7bbda04c | 131 | KVMState *s = kvm_state; |
05330448 AL |
132 | int i; |
133 | ||
fb541ca5 | 134 | for (i = 0; i < s->nr_slots; i++) { |
7bbda04c PB |
135 | if (kml->slots[i].memory_size == 0) { |
136 | return &kml->slots[i]; | |
a426e122 | 137 | } |
05330448 AL |
138 | } |
139 | ||
b8865591 IM |
140 | return NULL; |
141 | } | |
142 | ||
143 | bool kvm_has_free_slot(MachineState *ms) | |
144 | { | |
7bbda04c PB |
145 | KVMState *s = KVM_STATE(ms->accelerator); |
146 | ||
147 | return kvm_get_free_slot(&s->memory_listener); | |
b8865591 IM |
148 | } |
149 | ||
7bbda04c | 150 | static KVMSlot *kvm_alloc_slot(KVMMemoryListener *kml) |
b8865591 | 151 | { |
7bbda04c | 152 | KVMSlot *slot = kvm_get_free_slot(kml); |
b8865591 IM |
153 | |
154 | if (slot) { | |
155 | return slot; | |
156 | } | |
157 | ||
d3f8d37f AL |
158 | fprintf(stderr, "%s: no free slot available\n", __func__); |
159 | abort(); | |
160 | } | |
161 | ||
7bbda04c | 162 | static KVMSlot *kvm_lookup_matching_slot(KVMMemoryListener *kml, |
a8170e5e AK |
163 | hwaddr start_addr, |
164 | hwaddr end_addr) | |
d3f8d37f | 165 | { |
7bbda04c | 166 | KVMState *s = kvm_state; |
d3f8d37f AL |
167 | int i; |
168 | ||
fb541ca5 | 169 | for (i = 0; i < s->nr_slots; i++) { |
7bbda04c | 170 | KVMSlot *mem = &kml->slots[i]; |
d3f8d37f AL |
171 | |
172 | if (start_addr == mem->start_addr && | |
173 | end_addr == mem->start_addr + mem->memory_size) { | |
174 | return mem; | |
175 | } | |
176 | } | |
177 | ||
05330448 AL |
178 | return NULL; |
179 | } | |
180 | ||
6152e2ae AL |
181 | /* |
182 | * Find overlapping slot with lowest start address | |
183 | */ | |
7bbda04c | 184 | static KVMSlot *kvm_lookup_overlapping_slot(KVMMemoryListener *kml, |
a8170e5e AK |
185 | hwaddr start_addr, |
186 | hwaddr end_addr) | |
05330448 | 187 | { |
7bbda04c | 188 | KVMState *s = kvm_state; |
6152e2ae | 189 | KVMSlot *found = NULL; |
05330448 AL |
190 | int i; |
191 | ||
fb541ca5 | 192 | for (i = 0; i < s->nr_slots; i++) { |
7bbda04c | 193 | KVMSlot *mem = &kml->slots[i]; |
05330448 | 194 | |
6152e2ae AL |
195 | if (mem->memory_size == 0 || |
196 | (found && found->start_addr < mem->start_addr)) { | |
197 | continue; | |
198 | } | |
199 | ||
200 | if (end_addr > mem->start_addr && | |
201 | start_addr < mem->start_addr + mem->memory_size) { | |
202 | found = mem; | |
203 | } | |
05330448 AL |
204 | } |
205 | ||
6152e2ae | 206 | return found; |
05330448 AL |
207 | } |
208 | ||
9f213ed9 | 209 | int kvm_physical_memory_addr_from_host(KVMState *s, void *ram, |
a8170e5e | 210 | hwaddr *phys_addr) |
983dfc3b | 211 | { |
7bbda04c | 212 | KVMMemoryListener *kml = &s->memory_listener; |
983dfc3b HY |
213 | int i; |
214 | ||
fb541ca5 | 215 | for (i = 0; i < s->nr_slots; i++) { |
7bbda04c | 216 | KVMSlot *mem = &kml->slots[i]; |
983dfc3b | 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 | ||
7bbda04c | 227 | static int kvm_set_user_memory_region(KVMMemoryListener *kml, KVMSlot *slot) |
5832d1f2 | 228 | { |
7bbda04c | 229 | KVMState *s = kvm_state; |
5832d1f2 AL |
230 | struct kvm_userspace_memory_region mem; |
231 | ||
38bfe691 | 232 | mem.slot = slot->slot | (kml->as_id << 16); |
5832d1f2 | 233 | mem.guest_phys_addr = slot->start_addr; |
9f213ed9 | 234 | mem.userspace_addr = (unsigned long)slot->ram; |
5832d1f2 | 235 | mem.flags = slot->flags; |
651eb0f4 XG |
236 | |
237 | if (slot->memory_size && mem.flags & KVM_MEM_READONLY) { | |
235e8982 JJ |
238 | /* Set the slot size to 0 before setting the slot to the desired |
239 | * value. This is needed based on KVM commit 75d61fbc. */ | |
240 | mem.memory_size = 0; | |
241 | kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); | |
242 | } | |
243 | mem.memory_size = slot->memory_size; | |
5832d1f2 AL |
244 | return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem); |
245 | } | |
246 | ||
4c055ab5 GZ |
247 | int kvm_destroy_vcpu(CPUState *cpu) |
248 | { | |
249 | KVMState *s = kvm_state; | |
250 | long mmap_size; | |
251 | struct KVMParkedVcpu *vcpu = NULL; | |
252 | int ret = 0; | |
253 | ||
254 | DPRINTF("kvm_destroy_vcpu\n"); | |
255 | ||
256 | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0); | |
257 | if (mmap_size < 0) { | |
258 | ret = mmap_size; | |
259 | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n"); | |
260 | goto err; | |
261 | } | |
262 | ||
263 | ret = munmap(cpu->kvm_run, mmap_size); | |
264 | if (ret < 0) { | |
265 | goto err; | |
266 | } | |
267 | ||
268 | vcpu = g_malloc0(sizeof(*vcpu)); | |
269 | vcpu->vcpu_id = kvm_arch_vcpu_id(cpu); | |
270 | vcpu->kvm_fd = cpu->kvm_fd; | |
271 | QLIST_INSERT_HEAD(&kvm_state->kvm_parked_vcpus, vcpu, node); | |
272 | err: | |
273 | return ret; | |
274 | } | |
275 | ||
276 | static int kvm_get_vcpu(KVMState *s, unsigned long vcpu_id) | |
277 | { | |
278 | struct KVMParkedVcpu *cpu; | |
279 | ||
280 | QLIST_FOREACH(cpu, &s->kvm_parked_vcpus, node) { | |
281 | if (cpu->vcpu_id == vcpu_id) { | |
282 | int kvm_fd; | |
283 | ||
284 | QLIST_REMOVE(cpu, node); | |
285 | kvm_fd = cpu->kvm_fd; | |
286 | g_free(cpu); | |
287 | return kvm_fd; | |
288 | } | |
289 | } | |
290 | ||
291 | return kvm_vm_ioctl(s, KVM_CREATE_VCPU, (void *)vcpu_id); | |
292 | } | |
293 | ||
504134d2 | 294 | int kvm_init_vcpu(CPUState *cpu) |
05330448 AL |
295 | { |
296 | KVMState *s = kvm_state; | |
297 | long mmap_size; | |
298 | int ret; | |
299 | ||
8c0d577e | 300 | DPRINTF("kvm_init_vcpu\n"); |
05330448 | 301 | |
4c055ab5 | 302 | ret = kvm_get_vcpu(s, kvm_arch_vcpu_id(cpu)); |
05330448 | 303 | if (ret < 0) { |
8c0d577e | 304 | DPRINTF("kvm_create_vcpu failed\n"); |
05330448 AL |
305 | goto err; |
306 | } | |
307 | ||
8737c51c | 308 | cpu->kvm_fd = ret; |
a60f24b5 | 309 | cpu->kvm_state = s; |
20d695a9 | 310 | cpu->kvm_vcpu_dirty = true; |
05330448 AL |
311 | |
312 | mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0); | |
313 | if (mmap_size < 0) { | |
748a680b | 314 | ret = mmap_size; |
8c0d577e | 315 | DPRINTF("KVM_GET_VCPU_MMAP_SIZE failed\n"); |
05330448 AL |
316 | goto err; |
317 | } | |
318 | ||
f7575c96 | 319 | cpu->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED, |
8737c51c | 320 | cpu->kvm_fd, 0); |
f7575c96 | 321 | if (cpu->kvm_run == MAP_FAILED) { |
05330448 | 322 | ret = -errno; |
8c0d577e | 323 | DPRINTF("mmap'ing vcpu state failed\n"); |
05330448 AL |
324 | goto err; |
325 | } | |
326 | ||
a426e122 JK |
327 | if (s->coalesced_mmio && !s->coalesced_mmio_ring) { |
328 | s->coalesced_mmio_ring = | |
f7575c96 | 329 | (void *)cpu->kvm_run + s->coalesced_mmio * PAGE_SIZE; |
a426e122 | 330 | } |
62a2744c | 331 | |
20d695a9 | 332 | ret = kvm_arch_init_vcpu(cpu); |
05330448 AL |
333 | err: |
334 | return ret; | |
335 | } | |
336 | ||
5832d1f2 AL |
337 | /* |
338 | * dirty pages logging control | |
339 | */ | |
25254bbc | 340 | |
d6ff5cbc | 341 | static int kvm_mem_flags(MemoryRegion *mr) |
25254bbc | 342 | { |
d6ff5cbc | 343 | bool readonly = mr->readonly || memory_region_is_romd(mr); |
235e8982 | 344 | int flags = 0; |
d6ff5cbc AJ |
345 | |
346 | if (memory_region_get_dirty_log_mask(mr) != 0) { | |
347 | flags |= KVM_MEM_LOG_DIRTY_PAGES; | |
348 | } | |
235e8982 JJ |
349 | if (readonly && kvm_readonly_mem_allowed) { |
350 | flags |= KVM_MEM_READONLY; | |
351 | } | |
352 | return flags; | |
25254bbc MT |
353 | } |
354 | ||
7bbda04c PB |
355 | static int kvm_slot_update_flags(KVMMemoryListener *kml, KVMSlot *mem, |
356 | MemoryRegion *mr) | |
5832d1f2 | 357 | { |
4495d6a7 JK |
358 | int old_flags; |
359 | ||
4495d6a7 | 360 | old_flags = mem->flags; |
d6ff5cbc | 361 | mem->flags = kvm_mem_flags(mr); |
5832d1f2 | 362 | |
4495d6a7 | 363 | /* If nothing changed effectively, no need to issue ioctl */ |
d6ff5cbc | 364 | if (mem->flags == old_flags) { |
25254bbc | 365 | return 0; |
4495d6a7 JK |
366 | } |
367 | ||
7bbda04c | 368 | return kvm_set_user_memory_region(kml, mem); |
5832d1f2 AL |
369 | } |
370 | ||
7bbda04c PB |
371 | static int kvm_section_update_flags(KVMMemoryListener *kml, |
372 | MemoryRegionSection *section) | |
25254bbc | 373 | { |
d6ff5cbc AJ |
374 | hwaddr phys_addr = section->offset_within_address_space; |
375 | ram_addr_t size = int128_get64(section->size); | |
7bbda04c | 376 | KVMSlot *mem = kvm_lookup_matching_slot(kml, phys_addr, phys_addr + size); |
25254bbc MT |
377 | |
378 | if (mem == NULL) { | |
ea8cb1a8 PB |
379 | return 0; |
380 | } else { | |
7bbda04c | 381 | return kvm_slot_update_flags(kml, mem, section->mr); |
25254bbc | 382 | } |
25254bbc MT |
383 | } |
384 | ||
a01672d3 | 385 | static void kvm_log_start(MemoryListener *listener, |
b2dfd71c PB |
386 | MemoryRegionSection *section, |
387 | int old, int new) | |
5832d1f2 | 388 | { |
7bbda04c | 389 | KVMMemoryListener *kml = container_of(listener, KVMMemoryListener, listener); |
a01672d3 AK |
390 | int r; |
391 | ||
b2dfd71c PB |
392 | if (old != 0) { |
393 | return; | |
394 | } | |
395 | ||
7bbda04c | 396 | r = kvm_section_update_flags(kml, section); |
a01672d3 AK |
397 | if (r < 0) { |
398 | abort(); | |
399 | } | |
5832d1f2 AL |
400 | } |
401 | ||
a01672d3 | 402 | static void kvm_log_stop(MemoryListener *listener, |
b2dfd71c PB |
403 | MemoryRegionSection *section, |
404 | int old, int new) | |
5832d1f2 | 405 | { |
7bbda04c | 406 | KVMMemoryListener *kml = container_of(listener, KVMMemoryListener, listener); |
a01672d3 AK |
407 | int r; |
408 | ||
b2dfd71c PB |
409 | if (new != 0) { |
410 | return; | |
411 | } | |
412 | ||
7bbda04c | 413 | r = kvm_section_update_flags(kml, section); |
a01672d3 AK |
414 | if (r < 0) { |
415 | abort(); | |
416 | } | |
5832d1f2 AL |
417 | } |
418 | ||
8369e01c | 419 | /* get kvm's dirty pages bitmap and update qemu's */ |
ffcde12f AK |
420 | static int kvm_get_dirty_pages_log_range(MemoryRegionSection *section, |
421 | unsigned long *bitmap) | |
96c1606b | 422 | { |
8e41fb63 FZ |
423 | ram_addr_t start = section->offset_within_region + |
424 | memory_region_get_ram_addr(section->mr); | |
5ff7fb77 JQ |
425 | ram_addr_t pages = int128_get64(section->size) / getpagesize(); |
426 | ||
427 | cpu_physical_memory_set_dirty_lebitmap(bitmap, start, pages); | |
8369e01c | 428 | return 0; |
96c1606b AG |
429 | } |
430 | ||
8369e01c MT |
431 | #define ALIGN(x, y) (((x)+(y)-1) & ~((y)-1)) |
432 | ||
5832d1f2 AL |
433 | /** |
434 | * kvm_physical_sync_dirty_bitmap - Grab dirty bitmap from kernel space | |
fd4aa979 BS |
435 | * This function updates qemu's dirty bitmap using |
436 | * memory_region_set_dirty(). This means all bits are set | |
437 | * to dirty. | |
5832d1f2 | 438 | * |
d3f8d37f | 439 | * @start_add: start of logged region. |
5832d1f2 AL |
440 | * @end_addr: end of logged region. |
441 | */ | |
7bbda04c PB |
442 | static int kvm_physical_sync_dirty_bitmap(KVMMemoryListener *kml, |
443 | MemoryRegionSection *section) | |
5832d1f2 AL |
444 | { |
445 | KVMState *s = kvm_state; | |
151f7749 | 446 | unsigned long size, allocated_size = 0; |
714f78c5 | 447 | struct kvm_dirty_log d = {}; |
151f7749 JK |
448 | KVMSlot *mem; |
449 | int ret = 0; | |
a8170e5e | 450 | hwaddr start_addr = section->offset_within_address_space; |
052e87b0 | 451 | hwaddr end_addr = start_addr + int128_get64(section->size); |
5832d1f2 | 452 | |
151f7749 JK |
453 | d.dirty_bitmap = NULL; |
454 | while (start_addr < end_addr) { | |
7bbda04c | 455 | mem = kvm_lookup_overlapping_slot(kml, start_addr, end_addr); |
151f7749 JK |
456 | if (mem == NULL) { |
457 | break; | |
458 | } | |
5832d1f2 | 459 | |
51b0c606 MT |
460 | /* XXX bad kernel interface alert |
461 | * For dirty bitmap, kernel allocates array of size aligned to | |
462 | * bits-per-long. But for case when the kernel is 64bits and | |
463 | * the userspace is 32bits, userspace can't align to the same | |
464 | * bits-per-long, since sizeof(long) is different between kernel | |
465 | * and user space. This way, userspace will provide buffer which | |
466 | * may be 4 bytes less than the kernel will use, resulting in | |
467 | * userspace memory corruption (which is not detectable by valgrind | |
468 | * too, in most cases). | |
469 | * So for now, let's align to 64 instead of HOST_LONG_BITS here, in | |
cb8d4c8f | 470 | * a hope that sizeof(long) won't become >8 any time soon. |
51b0c606 MT |
471 | */ |
472 | size = ALIGN(((mem->memory_size) >> TARGET_PAGE_BITS), | |
473 | /*HOST_LONG_BITS*/ 64) / 8; | |
151f7749 | 474 | if (!d.dirty_bitmap) { |
7267c094 | 475 | d.dirty_bitmap = g_malloc(size); |
151f7749 | 476 | } else if (size > allocated_size) { |
7267c094 | 477 | d.dirty_bitmap = g_realloc(d.dirty_bitmap, size); |
151f7749 JK |
478 | } |
479 | allocated_size = size; | |
480 | memset(d.dirty_bitmap, 0, allocated_size); | |
5832d1f2 | 481 | |
38bfe691 | 482 | d.slot = mem->slot | (kml->as_id << 16); |
50212d63 | 483 | if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) { |
8c0d577e | 484 | DPRINTF("ioctl failed %d\n", errno); |
151f7749 JK |
485 | ret = -1; |
486 | break; | |
487 | } | |
5832d1f2 | 488 | |
ffcde12f | 489 | kvm_get_dirty_pages_log_range(section, d.dirty_bitmap); |
8369e01c | 490 | start_addr = mem->start_addr + mem->memory_size; |
5832d1f2 | 491 | } |
7267c094 | 492 | g_free(d.dirty_bitmap); |
151f7749 JK |
493 | |
494 | return ret; | |
5832d1f2 AL |
495 | } |
496 | ||
95d2994a AK |
497 | static void kvm_coalesce_mmio_region(MemoryListener *listener, |
498 | MemoryRegionSection *secion, | |
a8170e5e | 499 | hwaddr start, hwaddr size) |
f65ed4c1 | 500 | { |
f65ed4c1 AL |
501 | KVMState *s = kvm_state; |
502 | ||
503 | if (s->coalesced_mmio) { | |
504 | struct kvm_coalesced_mmio_zone zone; | |
505 | ||
506 | zone.addr = start; | |
507 | zone.size = size; | |
7e680753 | 508 | zone.pad = 0; |
f65ed4c1 | 509 | |
95d2994a | 510 | (void)kvm_vm_ioctl(s, KVM_REGISTER_COALESCED_MMIO, &zone); |
f65ed4c1 | 511 | } |
f65ed4c1 AL |
512 | } |
513 | ||
95d2994a AK |
514 | static void kvm_uncoalesce_mmio_region(MemoryListener *listener, |
515 | MemoryRegionSection *secion, | |
a8170e5e | 516 | hwaddr start, hwaddr size) |
f65ed4c1 | 517 | { |
f65ed4c1 AL |
518 | KVMState *s = kvm_state; |
519 | ||
520 | if (s->coalesced_mmio) { | |
521 | struct kvm_coalesced_mmio_zone zone; | |
522 | ||
523 | zone.addr = start; | |
524 | zone.size = size; | |
7e680753 | 525 | zone.pad = 0; |
f65ed4c1 | 526 | |
95d2994a | 527 | (void)kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone); |
f65ed4c1 | 528 | } |
f65ed4c1 AL |
529 | } |
530 | ||
ad7b8b33 AL |
531 | int kvm_check_extension(KVMState *s, unsigned int extension) |
532 | { | |
533 | int ret; | |
534 | ||
535 | ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, extension); | |
536 | if (ret < 0) { | |
537 | ret = 0; | |
538 | } | |
539 | ||
540 | return ret; | |
541 | } | |
542 | ||
7d0a07fa AG |
543 | int kvm_vm_check_extension(KVMState *s, unsigned int extension) |
544 | { | |
545 | int ret; | |
546 | ||
547 | ret = kvm_vm_ioctl(s, KVM_CHECK_EXTENSION, extension); | |
548 | if (ret < 0) { | |
549 | /* VM wide version not implemented, use global one instead */ | |
550 | ret = kvm_check_extension(s, extension); | |
551 | } | |
552 | ||
553 | return ret; | |
554 | } | |
555 | ||
b680c5ba GK |
556 | static uint32_t adjust_ioeventfd_endianness(uint32_t val, uint32_t size) |
557 | { | |
558 | #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) | |
559 | /* The kernel expects ioeventfd values in HOST_WORDS_BIGENDIAN | |
560 | * endianness, but the memory core hands them in target endianness. | |
561 | * For example, PPC is always treated as big-endian even if running | |
562 | * on KVM and on PPC64LE. Correct here. | |
563 | */ | |
564 | switch (size) { | |
565 | case 2: | |
566 | val = bswap16(val); | |
567 | break; | |
568 | case 4: | |
569 | val = bswap32(val); | |
570 | break; | |
571 | } | |
572 | #endif | |
573 | return val; | |
574 | } | |
575 | ||
584f2be7 | 576 | static int kvm_set_ioeventfd_mmio(int fd, hwaddr addr, uint32_t val, |
41cb62c2 | 577 | bool assign, uint32_t size, bool datamatch) |
500ffd4a MT |
578 | { |
579 | int ret; | |
03a96b83 TH |
580 | struct kvm_ioeventfd iofd = { |
581 | .datamatch = datamatch ? adjust_ioeventfd_endianness(val, size) : 0, | |
582 | .addr = addr, | |
583 | .len = size, | |
584 | .flags = 0, | |
585 | .fd = fd, | |
586 | }; | |
500ffd4a MT |
587 | |
588 | if (!kvm_enabled()) { | |
589 | return -ENOSYS; | |
590 | } | |
591 | ||
41cb62c2 MT |
592 | if (datamatch) { |
593 | iofd.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH; | |
594 | } | |
500ffd4a MT |
595 | if (!assign) { |
596 | iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; | |
597 | } | |
598 | ||
599 | ret = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &iofd); | |
600 | ||
601 | if (ret < 0) { | |
602 | return -errno; | |
603 | } | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
44c3f8f7 | 608 | static int kvm_set_ioeventfd_pio(int fd, uint16_t addr, uint16_t val, |
41cb62c2 | 609 | bool assign, uint32_t size, bool datamatch) |
500ffd4a MT |
610 | { |
611 | struct kvm_ioeventfd kick = { | |
b680c5ba | 612 | .datamatch = datamatch ? adjust_ioeventfd_endianness(val, size) : 0, |
500ffd4a | 613 | .addr = addr, |
41cb62c2 | 614 | .flags = KVM_IOEVENTFD_FLAG_PIO, |
44c3f8f7 | 615 | .len = size, |
500ffd4a MT |
616 | .fd = fd, |
617 | }; | |
618 | int r; | |
619 | if (!kvm_enabled()) { | |
620 | return -ENOSYS; | |
621 | } | |
41cb62c2 MT |
622 | if (datamatch) { |
623 | kick.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH; | |
624 | } | |
500ffd4a MT |
625 | if (!assign) { |
626 | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; | |
627 | } | |
628 | r = kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); | |
629 | if (r < 0) { | |
630 | return r; | |
631 | } | |
632 | return 0; | |
633 | } | |
634 | ||
635 | ||
d2f2b8a7 SH |
636 | static int kvm_check_many_ioeventfds(void) |
637 | { | |
d0dcac83 SH |
638 | /* Userspace can use ioeventfd for io notification. This requires a host |
639 | * that supports eventfd(2) and an I/O thread; since eventfd does not | |
640 | * support SIGIO it cannot interrupt the vcpu. | |
641 | * | |
642 | * Older kernels have a 6 device limit on the KVM io bus. Find out so we | |
d2f2b8a7 SH |
643 | * can avoid creating too many ioeventfds. |
644 | */ | |
12d4536f | 645 | #if defined(CONFIG_EVENTFD) |
d2f2b8a7 SH |
646 | int ioeventfds[7]; |
647 | int i, ret = 0; | |
648 | for (i = 0; i < ARRAY_SIZE(ioeventfds); i++) { | |
649 | ioeventfds[i] = eventfd(0, EFD_CLOEXEC); | |
650 | if (ioeventfds[i] < 0) { | |
651 | break; | |
652 | } | |
41cb62c2 | 653 | ret = kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, true, 2, true); |
d2f2b8a7 SH |
654 | if (ret < 0) { |
655 | close(ioeventfds[i]); | |
656 | break; | |
657 | } | |
658 | } | |
659 | ||
660 | /* Decide whether many devices are supported or not */ | |
661 | ret = i == ARRAY_SIZE(ioeventfds); | |
662 | ||
663 | while (i-- > 0) { | |
41cb62c2 | 664 | kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, false, 2, true); |
d2f2b8a7 SH |
665 | close(ioeventfds[i]); |
666 | } | |
667 | return ret; | |
668 | #else | |
669 | return 0; | |
670 | #endif | |
671 | } | |
672 | ||
94a8d39a JK |
673 | static const KVMCapabilityInfo * |
674 | kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list) | |
675 | { | |
676 | while (list->name) { | |
677 | if (!kvm_check_extension(s, list->value)) { | |
678 | return list; | |
679 | } | |
680 | list++; | |
681 | } | |
682 | return NULL; | |
683 | } | |
684 | ||
7bbda04c PB |
685 | static void kvm_set_phys_mem(KVMMemoryListener *kml, |
686 | MemoryRegionSection *section, bool add) | |
46dbef6a MT |
687 | { |
688 | KVMState *s = kvm_state; | |
46dbef6a MT |
689 | KVMSlot *mem, old; |
690 | int err; | |
a01672d3 | 691 | MemoryRegion *mr = section->mr; |
235e8982 | 692 | bool writeable = !mr->readonly && !mr->rom_device; |
a8170e5e | 693 | hwaddr start_addr = section->offset_within_address_space; |
052e87b0 | 694 | ram_addr_t size = int128_get64(section->size); |
9f213ed9 | 695 | void *ram = NULL; |
8f6f962b | 696 | unsigned delta; |
46dbef6a | 697 | |
14542fea | 698 | /* kvm works in page size chunks, but the function may be called |
f2a64032 AG |
699 | with sub-page size and unaligned start address. Pad the start |
700 | address to next and truncate size to previous page boundary. */ | |
b232c785 AK |
701 | delta = qemu_real_host_page_size - (start_addr & ~qemu_real_host_page_mask); |
702 | delta &= ~qemu_real_host_page_mask; | |
8f6f962b AK |
703 | if (delta > size) { |
704 | return; | |
705 | } | |
706 | start_addr += delta; | |
707 | size -= delta; | |
b232c785 AK |
708 | size &= qemu_real_host_page_mask; |
709 | if (!size || (start_addr & ~qemu_real_host_page_mask)) { | |
8f6f962b AK |
710 | return; |
711 | } | |
46dbef6a | 712 | |
a01672d3 | 713 | if (!memory_region_is_ram(mr)) { |
235e8982 JJ |
714 | if (writeable || !kvm_readonly_mem_allowed) { |
715 | return; | |
716 | } else if (!mr->romd_mode) { | |
717 | /* If the memory device is not in romd_mode, then we actually want | |
718 | * to remove the kvm memory slot so all accesses will trap. */ | |
719 | add = false; | |
720 | } | |
9f213ed9 AK |
721 | } |
722 | ||
8f6f962b | 723 | ram = memory_region_get_ram_ptr(mr) + section->offset_within_region + delta; |
a01672d3 | 724 | |
46dbef6a | 725 | while (1) { |
7bbda04c | 726 | mem = kvm_lookup_overlapping_slot(kml, start_addr, start_addr + size); |
46dbef6a MT |
727 | if (!mem) { |
728 | break; | |
729 | } | |
730 | ||
a01672d3 | 731 | if (add && start_addr >= mem->start_addr && |
46dbef6a | 732 | (start_addr + size <= mem->start_addr + mem->memory_size) && |
9f213ed9 | 733 | (ram - start_addr == mem->ram - mem->start_addr)) { |
46dbef6a | 734 | /* The new slot fits into the existing one and comes with |
25254bbc | 735 | * identical parameters - update flags and done. */ |
7bbda04c | 736 | kvm_slot_update_flags(kml, mem, mr); |
46dbef6a MT |
737 | return; |
738 | } | |
739 | ||
740 | old = *mem; | |
741 | ||
1bfbac4e | 742 | if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) { |
7bbda04c | 743 | kvm_physical_sync_dirty_bitmap(kml, section); |
3fbffb62 AK |
744 | } |
745 | ||
46dbef6a MT |
746 | /* unregister the overlapping slot */ |
747 | mem->memory_size = 0; | |
7bbda04c | 748 | err = kvm_set_user_memory_region(kml, mem); |
46dbef6a MT |
749 | if (err) { |
750 | fprintf(stderr, "%s: error unregistering overlapping slot: %s\n", | |
751 | __func__, strerror(-err)); | |
752 | abort(); | |
753 | } | |
754 | ||
755 | /* Workaround for older KVM versions: we can't join slots, even not by | |
756 | * unregistering the previous ones and then registering the larger | |
757 | * slot. We have to maintain the existing fragmentation. Sigh. | |
758 | * | |
759 | * This workaround assumes that the new slot starts at the same | |
760 | * address as the first existing one. If not or if some overlapping | |
761 | * slot comes around later, we will fail (not seen in practice so far) | |
762 | * - and actually require a recent KVM version. */ | |
763 | if (s->broken_set_mem_region && | |
a01672d3 | 764 | old.start_addr == start_addr && old.memory_size < size && add) { |
7bbda04c | 765 | mem = kvm_alloc_slot(kml); |
46dbef6a MT |
766 | mem->memory_size = old.memory_size; |
767 | mem->start_addr = old.start_addr; | |
9f213ed9 | 768 | mem->ram = old.ram; |
d6ff5cbc | 769 | mem->flags = kvm_mem_flags(mr); |
46dbef6a | 770 | |
7bbda04c | 771 | err = kvm_set_user_memory_region(kml, mem); |
46dbef6a MT |
772 | if (err) { |
773 | fprintf(stderr, "%s: error updating slot: %s\n", __func__, | |
774 | strerror(-err)); | |
775 | abort(); | |
776 | } | |
777 | ||
778 | start_addr += old.memory_size; | |
9f213ed9 | 779 | ram += old.memory_size; |
46dbef6a MT |
780 | size -= old.memory_size; |
781 | continue; | |
782 | } | |
783 | ||
784 | /* register prefix slot */ | |
785 | if (old.start_addr < start_addr) { | |
7bbda04c | 786 | mem = kvm_alloc_slot(kml); |
46dbef6a MT |
787 | mem->memory_size = start_addr - old.start_addr; |
788 | mem->start_addr = old.start_addr; | |
9f213ed9 | 789 | mem->ram = old.ram; |
d6ff5cbc | 790 | mem->flags = kvm_mem_flags(mr); |
46dbef6a | 791 | |
7bbda04c | 792 | err = kvm_set_user_memory_region(kml, mem); |
46dbef6a MT |
793 | if (err) { |
794 | fprintf(stderr, "%s: error registering prefix slot: %s\n", | |
795 | __func__, strerror(-err)); | |
d4d6868f AG |
796 | #ifdef TARGET_PPC |
797 | fprintf(stderr, "%s: This is probably because your kernel's " \ | |
798 | "PAGE_SIZE is too big. Please try to use 4k " \ | |
799 | "PAGE_SIZE!\n", __func__); | |
800 | #endif | |
46dbef6a MT |
801 | abort(); |
802 | } | |
803 | } | |
804 | ||
805 | /* register suffix slot */ | |
806 | if (old.start_addr + old.memory_size > start_addr + size) { | |
807 | ram_addr_t size_delta; | |
808 | ||
7bbda04c | 809 | mem = kvm_alloc_slot(kml); |
46dbef6a MT |
810 | mem->start_addr = start_addr + size; |
811 | size_delta = mem->start_addr - old.start_addr; | |
812 | mem->memory_size = old.memory_size - size_delta; | |
9f213ed9 | 813 | mem->ram = old.ram + size_delta; |
d6ff5cbc | 814 | mem->flags = kvm_mem_flags(mr); |
46dbef6a | 815 | |
7bbda04c | 816 | err = kvm_set_user_memory_region(kml, mem); |
46dbef6a MT |
817 | if (err) { |
818 | fprintf(stderr, "%s: error registering suffix slot: %s\n", | |
819 | __func__, strerror(-err)); | |
820 | abort(); | |
821 | } | |
822 | } | |
823 | } | |
824 | ||
825 | /* in case the KVM bug workaround already "consumed" the new slot */ | |
a426e122 | 826 | if (!size) { |
46dbef6a | 827 | return; |
a426e122 | 828 | } |
a01672d3 | 829 | if (!add) { |
46dbef6a | 830 | return; |
a426e122 | 831 | } |
7bbda04c | 832 | mem = kvm_alloc_slot(kml); |
46dbef6a MT |
833 | mem->memory_size = size; |
834 | mem->start_addr = start_addr; | |
9f213ed9 | 835 | mem->ram = ram; |
d6ff5cbc | 836 | mem->flags = kvm_mem_flags(mr); |
46dbef6a | 837 | |
7bbda04c | 838 | err = kvm_set_user_memory_region(kml, mem); |
46dbef6a MT |
839 | if (err) { |
840 | fprintf(stderr, "%s: error registering slot: %s\n", __func__, | |
841 | strerror(-err)); | |
842 | abort(); | |
843 | } | |
844 | } | |
845 | ||
a01672d3 AK |
846 | static void kvm_region_add(MemoryListener *listener, |
847 | MemoryRegionSection *section) | |
848 | { | |
7bbda04c PB |
849 | KVMMemoryListener *kml = container_of(listener, KVMMemoryListener, listener); |
850 | ||
dfde4e6e | 851 | memory_region_ref(section->mr); |
7bbda04c | 852 | kvm_set_phys_mem(kml, section, true); |
a01672d3 AK |
853 | } |
854 | ||
855 | static void kvm_region_del(MemoryListener *listener, | |
856 | MemoryRegionSection *section) | |
857 | { | |
7bbda04c PB |
858 | KVMMemoryListener *kml = container_of(listener, KVMMemoryListener, listener); |
859 | ||
860 | kvm_set_phys_mem(kml, section, false); | |
dfde4e6e | 861 | memory_region_unref(section->mr); |
a01672d3 AK |
862 | } |
863 | ||
864 | static void kvm_log_sync(MemoryListener *listener, | |
865 | MemoryRegionSection *section) | |
7b8f3b78 | 866 | { |
7bbda04c | 867 | KVMMemoryListener *kml = container_of(listener, KVMMemoryListener, listener); |
a01672d3 AK |
868 | int r; |
869 | ||
7bbda04c | 870 | r = kvm_physical_sync_dirty_bitmap(kml, section); |
a01672d3 AK |
871 | if (r < 0) { |
872 | abort(); | |
873 | } | |
7b8f3b78 MT |
874 | } |
875 | ||
d22b096e AK |
876 | static void kvm_mem_ioeventfd_add(MemoryListener *listener, |
877 | MemoryRegionSection *section, | |
878 | bool match_data, uint64_t data, | |
879 | EventNotifier *e) | |
880 | { | |
881 | int fd = event_notifier_get_fd(e); | |
80a1ea37 AK |
882 | int r; |
883 | ||
4b8f1c88 | 884 | r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space, |
052e87b0 PB |
885 | data, true, int128_get64(section->size), |
886 | match_data); | |
80a1ea37 | 887 | if (r < 0) { |
fa4ba923 AK |
888 | fprintf(stderr, "%s: error adding ioeventfd: %s\n", |
889 | __func__, strerror(-r)); | |
80a1ea37 AK |
890 | abort(); |
891 | } | |
892 | } | |
893 | ||
d22b096e AK |
894 | static void kvm_mem_ioeventfd_del(MemoryListener *listener, |
895 | MemoryRegionSection *section, | |
896 | bool match_data, uint64_t data, | |
897 | EventNotifier *e) | |
80a1ea37 | 898 | { |
d22b096e | 899 | int fd = event_notifier_get_fd(e); |
80a1ea37 AK |
900 | int r; |
901 | ||
4b8f1c88 | 902 | r = kvm_set_ioeventfd_mmio(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 | ||
d22b096e AK |
910 | static void kvm_io_ioeventfd_add(MemoryListener *listener, |
911 | MemoryRegionSection *section, | |
912 | bool match_data, uint64_t data, | |
913 | EventNotifier *e) | |
80a1ea37 | 914 | { |
d22b096e | 915 | int fd = event_notifier_get_fd(e); |
80a1ea37 AK |
916 | int r; |
917 | ||
44c3f8f7 | 918 | r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space, |
052e87b0 PB |
919 | data, true, int128_get64(section->size), |
920 | match_data); | |
80a1ea37 | 921 | if (r < 0) { |
fa4ba923 AK |
922 | fprintf(stderr, "%s: error adding ioeventfd: %s\n", |
923 | __func__, strerror(-r)); | |
80a1ea37 AK |
924 | abort(); |
925 | } | |
926 | } | |
927 | ||
d22b096e AK |
928 | static void kvm_io_ioeventfd_del(MemoryListener *listener, |
929 | MemoryRegionSection *section, | |
930 | bool match_data, uint64_t data, | |
931 | EventNotifier *e) | |
80a1ea37 AK |
932 | |
933 | { | |
d22b096e | 934 | int fd = event_notifier_get_fd(e); |
80a1ea37 AK |
935 | int r; |
936 | ||
44c3f8f7 | 937 | r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space, |
052e87b0 PB |
938 | data, false, int128_get64(section->size), |
939 | match_data); | |
80a1ea37 AK |
940 | if (r < 0) { |
941 | abort(); | |
942 | } | |
943 | } | |
944 | ||
38bfe691 PB |
945 | void kvm_memory_listener_register(KVMState *s, KVMMemoryListener *kml, |
946 | AddressSpace *as, int as_id) | |
7bbda04c PB |
947 | { |
948 | int i; | |
949 | ||
950 | kml->slots = g_malloc0(s->nr_slots * sizeof(KVMSlot)); | |
38bfe691 | 951 | kml->as_id = as_id; |
7bbda04c PB |
952 | |
953 | for (i = 0; i < s->nr_slots; i++) { | |
954 | kml->slots[i].slot = i; | |
955 | } | |
956 | ||
957 | kml->listener.region_add = kvm_region_add; | |
958 | kml->listener.region_del = kvm_region_del; | |
959 | kml->listener.log_start = kvm_log_start; | |
960 | kml->listener.log_stop = kvm_log_stop; | |
961 | kml->listener.log_sync = kvm_log_sync; | |
962 | kml->listener.priority = 10; | |
963 | ||
964 | memory_listener_register(&kml->listener, as); | |
965 | } | |
d22b096e AK |
966 | |
967 | static MemoryListener kvm_io_listener = { | |
d22b096e AK |
968 | .eventfd_add = kvm_io_ioeventfd_add, |
969 | .eventfd_del = kvm_io_ioeventfd_del, | |
72e22d2f | 970 | .priority = 10, |
7b8f3b78 MT |
971 | }; |
972 | ||
c3affe56 | 973 | static void kvm_handle_interrupt(CPUState *cpu, int mask) |
aa7f74d1 | 974 | { |
259186a7 | 975 | cpu->interrupt_request |= mask; |
aa7f74d1 | 976 | |
60e82579 | 977 | if (!qemu_cpu_is_self(cpu)) { |
c08d7424 | 978 | qemu_cpu_kick(cpu); |
aa7f74d1 JK |
979 | } |
980 | } | |
981 | ||
3889c3fa | 982 | int kvm_set_irq(KVMState *s, int irq, int level) |
84b058d7 JK |
983 | { |
984 | struct kvm_irq_level event; | |
985 | int ret; | |
986 | ||
7ae26bd4 | 987 | assert(kvm_async_interrupts_enabled()); |
84b058d7 JK |
988 | |
989 | event.level = level; | |
990 | event.irq = irq; | |
e333cd69 | 991 | ret = kvm_vm_ioctl(s, s->irq_set_ioctl, &event); |
84b058d7 | 992 | if (ret < 0) { |
3889c3fa | 993 | perror("kvm_set_irq"); |
84b058d7 JK |
994 | abort(); |
995 | } | |
996 | ||
e333cd69 | 997 | return (s->irq_set_ioctl == KVM_IRQ_LINE) ? 1 : event.status; |
84b058d7 JK |
998 | } |
999 | ||
1000 | #ifdef KVM_CAP_IRQ_ROUTING | |
d3d3bef0 JK |
1001 | typedef struct KVMMSIRoute { |
1002 | struct kvm_irq_routing_entry kroute; | |
1003 | QTAILQ_ENTRY(KVMMSIRoute) entry; | |
1004 | } KVMMSIRoute; | |
1005 | ||
84b058d7 JK |
1006 | static void set_gsi(KVMState *s, unsigned int gsi) |
1007 | { | |
8269fb70 | 1008 | set_bit(gsi, s->used_gsi_bitmap); |
84b058d7 JK |
1009 | } |
1010 | ||
04fa27f5 JK |
1011 | static void clear_gsi(KVMState *s, unsigned int gsi) |
1012 | { | |
8269fb70 | 1013 | clear_bit(gsi, s->used_gsi_bitmap); |
04fa27f5 JK |
1014 | } |
1015 | ||
7b774593 | 1016 | void kvm_init_irq_routing(KVMState *s) |
84b058d7 | 1017 | { |
04fa27f5 | 1018 | int gsi_count, i; |
84b058d7 | 1019 | |
00008418 | 1020 | gsi_count = kvm_check_extension(s, KVM_CAP_IRQ_ROUTING) - 1; |
84b058d7 | 1021 | if (gsi_count > 0) { |
84b058d7 | 1022 | /* Round up so we can search ints using ffs */ |
8269fb70 | 1023 | s->used_gsi_bitmap = bitmap_new(gsi_count); |
4e2e4e63 | 1024 | s->gsi_count = gsi_count; |
84b058d7 JK |
1025 | } |
1026 | ||
1027 | s->irq_routes = g_malloc0(sizeof(*s->irq_routes)); | |
1028 | s->nr_allocated_irq_routes = 0; | |
1029 | ||
50bf31b9 | 1030 | if (!kvm_direct_msi_allowed) { |
4a3adebb JK |
1031 | for (i = 0; i < KVM_MSI_HASHTAB_SIZE; i++) { |
1032 | QTAILQ_INIT(&s->msi_hashtab[i]); | |
1033 | } | |
04fa27f5 JK |
1034 | } |
1035 | ||
84b058d7 JK |
1036 | kvm_arch_init_irq_routing(s); |
1037 | } | |
1038 | ||
cb925cf9 | 1039 | void kvm_irqchip_commit_routes(KVMState *s) |
e7b20308 JK |
1040 | { |
1041 | int ret; | |
1042 | ||
1043 | s->irq_routes->flags = 0; | |
1044 | ret = kvm_vm_ioctl(s, KVM_SET_GSI_ROUTING, s->irq_routes); | |
1045 | assert(ret == 0); | |
1046 | } | |
1047 | ||
84b058d7 JK |
1048 | static void kvm_add_routing_entry(KVMState *s, |
1049 | struct kvm_irq_routing_entry *entry) | |
1050 | { | |
1051 | struct kvm_irq_routing_entry *new; | |
1052 | int n, size; | |
1053 | ||
1054 | if (s->irq_routes->nr == s->nr_allocated_irq_routes) { | |
1055 | n = s->nr_allocated_irq_routes * 2; | |
1056 | if (n < 64) { | |
1057 | n = 64; | |
1058 | } | |
1059 | size = sizeof(struct kvm_irq_routing); | |
1060 | size += n * sizeof(*new); | |
1061 | s->irq_routes = g_realloc(s->irq_routes, size); | |
1062 | s->nr_allocated_irq_routes = n; | |
1063 | } | |
1064 | n = s->irq_routes->nr++; | |
1065 | new = &s->irq_routes->entries[n]; | |
0fbc2074 MT |
1066 | |
1067 | *new = *entry; | |
84b058d7 JK |
1068 | |
1069 | set_gsi(s, entry->gsi); | |
1070 | } | |
1071 | ||
cc57407e JK |
1072 | static int kvm_update_routing_entry(KVMState *s, |
1073 | struct kvm_irq_routing_entry *new_entry) | |
1074 | { | |
1075 | struct kvm_irq_routing_entry *entry; | |
1076 | int n; | |
1077 | ||
1078 | for (n = 0; n < s->irq_routes->nr; n++) { | |
1079 | entry = &s->irq_routes->entries[n]; | |
1080 | if (entry->gsi != new_entry->gsi) { | |
1081 | continue; | |
1082 | } | |
1083 | ||
40509f7f MT |
1084 | if(!memcmp(entry, new_entry, sizeof *entry)) { |
1085 | return 0; | |
1086 | } | |
1087 | ||
0fbc2074 | 1088 | *entry = *new_entry; |
cc57407e JK |
1089 | |
1090 | kvm_irqchip_commit_routes(s); | |
1091 | ||
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | return -ESRCH; | |
1096 | } | |
1097 | ||
1df186df | 1098 | void kvm_irqchip_add_irq_route(KVMState *s, int irq, int irqchip, int pin) |
84b058d7 | 1099 | { |
0fbc2074 | 1100 | struct kvm_irq_routing_entry e = {}; |
84b058d7 | 1101 | |
4e2e4e63 JK |
1102 | assert(pin < s->gsi_count); |
1103 | ||
84b058d7 JK |
1104 | e.gsi = irq; |
1105 | e.type = KVM_IRQ_ROUTING_IRQCHIP; | |
1106 | e.flags = 0; | |
1107 | e.u.irqchip.irqchip = irqchip; | |
1108 | e.u.irqchip.pin = pin; | |
1109 | kvm_add_routing_entry(s, &e); | |
1110 | } | |
1111 | ||
1e2aa8be | 1112 | void kvm_irqchip_release_virq(KVMState *s, int virq) |
04fa27f5 JK |
1113 | { |
1114 | struct kvm_irq_routing_entry *e; | |
1115 | int i; | |
1116 | ||
76fe21de AK |
1117 | if (kvm_gsi_direct_mapping()) { |
1118 | return; | |
1119 | } | |
1120 | ||
04fa27f5 JK |
1121 | for (i = 0; i < s->irq_routes->nr; i++) { |
1122 | e = &s->irq_routes->entries[i]; | |
1123 | if (e->gsi == virq) { | |
1124 | s->irq_routes->nr--; | |
1125 | *e = s->irq_routes->entries[s->irq_routes->nr]; | |
1126 | } | |
1127 | } | |
1128 | clear_gsi(s, virq); | |
1129 | } | |
1130 | ||
1131 | static unsigned int kvm_hash_msi(uint32_t data) | |
1132 | { | |
1133 | /* This is optimized for IA32 MSI layout. However, no other arch shall | |
1134 | * repeat the mistake of not providing a direct MSI injection API. */ | |
1135 | return data & 0xff; | |
1136 | } | |
1137 | ||
1138 | static void kvm_flush_dynamic_msi_routes(KVMState *s) | |
1139 | { | |
1140 | KVMMSIRoute *route, *next; | |
1141 | unsigned int hash; | |
1142 | ||
1143 | for (hash = 0; hash < KVM_MSI_HASHTAB_SIZE; hash++) { | |
1144 | QTAILQ_FOREACH_SAFE(route, &s->msi_hashtab[hash], entry, next) { | |
1145 | kvm_irqchip_release_virq(s, route->kroute.gsi); | |
1146 | QTAILQ_REMOVE(&s->msi_hashtab[hash], route, entry); | |
1147 | g_free(route); | |
1148 | } | |
1149 | } | |
1150 | } | |
1151 | ||
1152 | static int kvm_irqchip_get_virq(KVMState *s) | |
1153 | { | |
8269fb70 | 1154 | int next_virq; |
04fa27f5 | 1155 | |
bdf02631 WM |
1156 | /* |
1157 | * PIC and IOAPIC share the first 16 GSI numbers, thus the available | |
1158 | * GSI numbers are more than the number of IRQ route. Allocating a GSI | |
1159 | * number can succeed even though a new route entry cannot be added. | |
1160 | * When this happens, flush dynamic MSI entries to free IRQ route entries. | |
1161 | */ | |
50bf31b9 | 1162 | if (!kvm_direct_msi_allowed && s->irq_routes->nr == s->gsi_count) { |
bdf02631 WM |
1163 | kvm_flush_dynamic_msi_routes(s); |
1164 | } | |
1165 | ||
04fa27f5 | 1166 | /* Return the lowest unused GSI in the bitmap */ |
8269fb70 WY |
1167 | next_virq = find_first_zero_bit(s->used_gsi_bitmap, s->gsi_count); |
1168 | if (next_virq >= s->gsi_count) { | |
1169 | return -ENOSPC; | |
1170 | } else { | |
1171 | return next_virq; | |
04fa27f5 | 1172 | } |
04fa27f5 JK |
1173 | } |
1174 | ||
1175 | static KVMMSIRoute *kvm_lookup_msi_route(KVMState *s, MSIMessage msg) | |
1176 | { | |
1177 | unsigned int hash = kvm_hash_msi(msg.data); | |
1178 | KVMMSIRoute *route; | |
1179 | ||
1180 | QTAILQ_FOREACH(route, &s->msi_hashtab[hash], entry) { | |
1181 | if (route->kroute.u.msi.address_lo == (uint32_t)msg.address && | |
1182 | route->kroute.u.msi.address_hi == (msg.address >> 32) && | |
d07cc1f1 | 1183 | route->kroute.u.msi.data == le32_to_cpu(msg.data)) { |
04fa27f5 JK |
1184 | return route; |
1185 | } | |
1186 | } | |
1187 | return NULL; | |
1188 | } | |
1189 | ||
1190 | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg) | |
1191 | { | |
4a3adebb | 1192 | struct kvm_msi msi; |
04fa27f5 JK |
1193 | KVMMSIRoute *route; |
1194 | ||
50bf31b9 | 1195 | if (kvm_direct_msi_allowed) { |
4a3adebb JK |
1196 | msi.address_lo = (uint32_t)msg.address; |
1197 | msi.address_hi = msg.address >> 32; | |
d07cc1f1 | 1198 | msi.data = le32_to_cpu(msg.data); |
4a3adebb JK |
1199 | msi.flags = 0; |
1200 | memset(msi.pad, 0, sizeof(msi.pad)); | |
1201 | ||
1202 | return kvm_vm_ioctl(s, KVM_SIGNAL_MSI, &msi); | |
1203 | } | |
1204 | ||
04fa27f5 JK |
1205 | route = kvm_lookup_msi_route(s, msg); |
1206 | if (!route) { | |
e7b20308 | 1207 | int virq; |
04fa27f5 JK |
1208 | |
1209 | virq = kvm_irqchip_get_virq(s); | |
1210 | if (virq < 0) { | |
1211 | return virq; | |
1212 | } | |
1213 | ||
0fbc2074 | 1214 | route = g_malloc0(sizeof(KVMMSIRoute)); |
04fa27f5 JK |
1215 | route->kroute.gsi = virq; |
1216 | route->kroute.type = KVM_IRQ_ROUTING_MSI; | |
1217 | route->kroute.flags = 0; | |
1218 | route->kroute.u.msi.address_lo = (uint32_t)msg.address; | |
1219 | route->kroute.u.msi.address_hi = msg.address >> 32; | |
d07cc1f1 | 1220 | route->kroute.u.msi.data = le32_to_cpu(msg.data); |
04fa27f5 JK |
1221 | |
1222 | kvm_add_routing_entry(s, &route->kroute); | |
cb925cf9 | 1223 | kvm_irqchip_commit_routes(s); |
04fa27f5 JK |
1224 | |
1225 | QTAILQ_INSERT_TAIL(&s->msi_hashtab[kvm_hash_msi(msg.data)], route, | |
1226 | entry); | |
04fa27f5 JK |
1227 | } |
1228 | ||
1229 | assert(route->kroute.type == KVM_IRQ_ROUTING_MSI); | |
1230 | ||
3889c3fa | 1231 | return kvm_set_irq(s, route->kroute.gsi, 1); |
04fa27f5 JK |
1232 | } |
1233 | ||
dc9f06ca | 1234 | int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg, PCIDevice *dev) |
92b4e489 | 1235 | { |
0fbc2074 | 1236 | struct kvm_irq_routing_entry kroute = {}; |
92b4e489 JK |
1237 | int virq; |
1238 | ||
76fe21de | 1239 | if (kvm_gsi_direct_mapping()) { |
1850b6b7 | 1240 | return kvm_arch_msi_data_to_gsi(msg.data); |
76fe21de AK |
1241 | } |
1242 | ||
f3e1bed8 | 1243 | if (!kvm_gsi_routing_enabled()) { |
92b4e489 JK |
1244 | return -ENOSYS; |
1245 | } | |
1246 | ||
1247 | virq = kvm_irqchip_get_virq(s); | |
1248 | if (virq < 0) { | |
1249 | return virq; | |
1250 | } | |
1251 | ||
1252 | kroute.gsi = virq; | |
1253 | kroute.type = KVM_IRQ_ROUTING_MSI; | |
1254 | kroute.flags = 0; | |
1255 | kroute.u.msi.address_lo = (uint32_t)msg.address; | |
1256 | kroute.u.msi.address_hi = msg.address >> 32; | |
d07cc1f1 | 1257 | kroute.u.msi.data = le32_to_cpu(msg.data); |
dc9f06ca | 1258 | if (kvm_arch_fixup_msi_route(&kroute, msg.address, msg.data, dev)) { |
9e03a040 FB |
1259 | kvm_irqchip_release_virq(s, virq); |
1260 | return -EINVAL; | |
1261 | } | |
92b4e489 JK |
1262 | |
1263 | kvm_add_routing_entry(s, &kroute); | |
cb925cf9 | 1264 | kvm_irqchip_commit_routes(s); |
92b4e489 JK |
1265 | |
1266 | return virq; | |
1267 | } | |
1268 | ||
dc9f06ca PF |
1269 | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg, |
1270 | PCIDevice *dev) | |
cc57407e | 1271 | { |
0fbc2074 | 1272 | struct kvm_irq_routing_entry kroute = {}; |
cc57407e | 1273 | |
76fe21de AK |
1274 | if (kvm_gsi_direct_mapping()) { |
1275 | return 0; | |
1276 | } | |
1277 | ||
cc57407e JK |
1278 | if (!kvm_irqchip_in_kernel()) { |
1279 | return -ENOSYS; | |
1280 | } | |
1281 | ||
1282 | kroute.gsi = virq; | |
1283 | kroute.type = KVM_IRQ_ROUTING_MSI; | |
1284 | kroute.flags = 0; | |
1285 | kroute.u.msi.address_lo = (uint32_t)msg.address; | |
1286 | kroute.u.msi.address_hi = msg.address >> 32; | |
d07cc1f1 | 1287 | kroute.u.msi.data = le32_to_cpu(msg.data); |
dc9f06ca | 1288 | if (kvm_arch_fixup_msi_route(&kroute, msg.address, msg.data, dev)) { |
9e03a040 FB |
1289 | return -EINVAL; |
1290 | } | |
cc57407e JK |
1291 | |
1292 | return kvm_update_routing_entry(s, &kroute); | |
1293 | } | |
1294 | ||
ca916d37 VM |
1295 | static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int rfd, int virq, |
1296 | bool assign) | |
39853bbc JK |
1297 | { |
1298 | struct kvm_irqfd irqfd = { | |
1299 | .fd = fd, | |
1300 | .gsi = virq, | |
1301 | .flags = assign ? 0 : KVM_IRQFD_FLAG_DEASSIGN, | |
1302 | }; | |
1303 | ||
ca916d37 VM |
1304 | if (rfd != -1) { |
1305 | irqfd.flags |= KVM_IRQFD_FLAG_RESAMPLE; | |
1306 | irqfd.resamplefd = rfd; | |
1307 | } | |
1308 | ||
cc7e0ddf | 1309 | if (!kvm_irqfds_enabled()) { |
39853bbc JK |
1310 | return -ENOSYS; |
1311 | } | |
1312 | ||
1313 | return kvm_vm_ioctl(s, KVM_IRQFD, &irqfd); | |
1314 | } | |
1315 | ||
d426d9fb CH |
1316 | int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter) |
1317 | { | |
e9af2fef | 1318 | struct kvm_irq_routing_entry kroute = {}; |
d426d9fb CH |
1319 | int virq; |
1320 | ||
1321 | if (!kvm_gsi_routing_enabled()) { | |
1322 | return -ENOSYS; | |
1323 | } | |
1324 | ||
1325 | virq = kvm_irqchip_get_virq(s); | |
1326 | if (virq < 0) { | |
1327 | return virq; | |
1328 | } | |
1329 | ||
1330 | kroute.gsi = virq; | |
1331 | kroute.type = KVM_IRQ_ROUTING_S390_ADAPTER; | |
1332 | kroute.flags = 0; | |
1333 | kroute.u.adapter.summary_addr = adapter->summary_addr; | |
1334 | kroute.u.adapter.ind_addr = adapter->ind_addr; | |
1335 | kroute.u.adapter.summary_offset = adapter->summary_offset; | |
1336 | kroute.u.adapter.ind_offset = adapter->ind_offset; | |
1337 | kroute.u.adapter.adapter_id = adapter->adapter_id; | |
1338 | ||
1339 | kvm_add_routing_entry(s, &kroute); | |
d426d9fb CH |
1340 | |
1341 | return virq; | |
1342 | } | |
1343 | ||
977a8d9c AS |
1344 | int kvm_irqchip_add_hv_sint_route(KVMState *s, uint32_t vcpu, uint32_t sint) |
1345 | { | |
1346 | struct kvm_irq_routing_entry kroute = {}; | |
1347 | int virq; | |
1348 | ||
1349 | if (!kvm_gsi_routing_enabled()) { | |
1350 | return -ENOSYS; | |
1351 | } | |
1352 | if (!kvm_check_extension(s, KVM_CAP_HYPERV_SYNIC)) { | |
1353 | return -ENOSYS; | |
1354 | } | |
1355 | virq = kvm_irqchip_get_virq(s); | |
1356 | if (virq < 0) { | |
1357 | return virq; | |
1358 | } | |
1359 | ||
1360 | kroute.gsi = virq; | |
1361 | kroute.type = KVM_IRQ_ROUTING_HV_SINT; | |
1362 | kroute.flags = 0; | |
1363 | kroute.u.hv_sint.vcpu = vcpu; | |
1364 | kroute.u.hv_sint.sint = sint; | |
1365 | ||
1366 | kvm_add_routing_entry(s, &kroute); | |
1367 | kvm_irqchip_commit_routes(s); | |
1368 | ||
1369 | return virq; | |
1370 | } | |
1371 | ||
84b058d7 JK |
1372 | #else /* !KVM_CAP_IRQ_ROUTING */ |
1373 | ||
7b774593 | 1374 | void kvm_init_irq_routing(KVMState *s) |
84b058d7 JK |
1375 | { |
1376 | } | |
04fa27f5 | 1377 | |
d3d3bef0 JK |
1378 | void kvm_irqchip_release_virq(KVMState *s, int virq) |
1379 | { | |
1380 | } | |
1381 | ||
04fa27f5 JK |
1382 | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg) |
1383 | { | |
1384 | abort(); | |
1385 | } | |
92b4e489 JK |
1386 | |
1387 | int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg) | |
1388 | { | |
df410675 | 1389 | return -ENOSYS; |
92b4e489 | 1390 | } |
39853bbc | 1391 | |
d426d9fb CH |
1392 | int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter) |
1393 | { | |
1394 | return -ENOSYS; | |
1395 | } | |
1396 | ||
977a8d9c AS |
1397 | int kvm_irqchip_add_hv_sint_route(KVMState *s, uint32_t vcpu, uint32_t sint) |
1398 | { | |
1399 | return -ENOSYS; | |
1400 | } | |
1401 | ||
39853bbc JK |
1402 | static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int virq, bool assign) |
1403 | { | |
1404 | abort(); | |
1405 | } | |
dabe3143 MT |
1406 | |
1407 | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg) | |
1408 | { | |
1409 | return -ENOSYS; | |
1410 | } | |
84b058d7 JK |
1411 | #endif /* !KVM_CAP_IRQ_ROUTING */ |
1412 | ||
1c9b71a7 EA |
1413 | int kvm_irqchip_add_irqfd_notifier_gsi(KVMState *s, EventNotifier *n, |
1414 | EventNotifier *rn, int virq) | |
39853bbc | 1415 | { |
ca916d37 VM |
1416 | return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n), |
1417 | rn ? event_notifier_get_fd(rn) : -1, virq, true); | |
39853bbc JK |
1418 | } |
1419 | ||
1c9b71a7 EA |
1420 | int kvm_irqchip_remove_irqfd_notifier_gsi(KVMState *s, EventNotifier *n, |
1421 | int virq) | |
15b2bd18 | 1422 | { |
ca916d37 VM |
1423 | return kvm_irqchip_assign_irqfd(s, event_notifier_get_fd(n), -1, virq, |
1424 | false); | |
15b2bd18 PB |
1425 | } |
1426 | ||
197e3524 EA |
1427 | int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, |
1428 | EventNotifier *rn, qemu_irq irq) | |
1429 | { | |
1430 | gpointer key, gsi; | |
1431 | gboolean found = g_hash_table_lookup_extended(s->gsimap, irq, &key, &gsi); | |
1432 | ||
1433 | if (!found) { | |
1434 | return -ENXIO; | |
1435 | } | |
1436 | return kvm_irqchip_add_irqfd_notifier_gsi(s, n, rn, GPOINTER_TO_INT(gsi)); | |
1437 | } | |
1438 | ||
1439 | int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, | |
1440 | qemu_irq irq) | |
1441 | { | |
1442 | gpointer key, gsi; | |
1443 | gboolean found = g_hash_table_lookup_extended(s->gsimap, irq, &key, &gsi); | |
1444 | ||
1445 | if (!found) { | |
1446 | return -ENXIO; | |
1447 | } | |
1448 | return kvm_irqchip_remove_irqfd_notifier_gsi(s, n, GPOINTER_TO_INT(gsi)); | |
1449 | } | |
1450 | ||
1451 | void kvm_irqchip_set_qemuirq_gsi(KVMState *s, qemu_irq irq, int gsi) | |
1452 | { | |
1453 | g_hash_table_insert(s->gsimap, irq, GINT_TO_POINTER(gsi)); | |
1454 | } | |
1455 | ||
8db4936b | 1456 | static void kvm_irqchip_create(MachineState *machine, KVMState *s) |
84b058d7 | 1457 | { |
84b058d7 JK |
1458 | int ret; |
1459 | ||
8db4936b PB |
1460 | if (kvm_check_extension(s, KVM_CAP_IRQCHIP)) { |
1461 | ; | |
1462 | } else if (kvm_check_extension(s, KVM_CAP_S390_IRQCHIP)) { | |
1463 | ret = kvm_vm_enable_cap(s, KVM_CAP_S390_IRQCHIP, 0); | |
1464 | if (ret < 0) { | |
1465 | fprintf(stderr, "Enable kernel irqchip failed: %s\n", strerror(-ret)); | |
1466 | exit(1); | |
1467 | } | |
1468 | } else { | |
1469 | return; | |
84b058d7 JK |
1470 | } |
1471 | ||
d6032e06 CD |
1472 | /* First probe and see if there's a arch-specific hook to create the |
1473 | * in-kernel irqchip for us */ | |
15eafc2e | 1474 | ret = kvm_arch_irqchip_create(machine, s); |
8db4936b | 1475 | if (ret == 0) { |
15eafc2e PB |
1476 | if (machine_kernel_irqchip_split(machine)) { |
1477 | perror("Split IRQ chip mode not supported."); | |
1478 | exit(1); | |
1479 | } else { | |
1480 | ret = kvm_vm_ioctl(s, KVM_CREATE_IRQCHIP); | |
1481 | } | |
8db4936b PB |
1482 | } |
1483 | if (ret < 0) { | |
1484 | fprintf(stderr, "Create kernel irqchip failed: %s\n", strerror(-ret)); | |
1485 | exit(1); | |
84b058d7 JK |
1486 | } |
1487 | ||
3d4b2649 | 1488 | kvm_kernel_irqchip = true; |
7ae26bd4 PM |
1489 | /* If we have an in-kernel IRQ chip then we must have asynchronous |
1490 | * interrupt delivery (though the reverse is not necessarily true) | |
1491 | */ | |
1492 | kvm_async_interrupts_allowed = true; | |
215e79c0 | 1493 | kvm_halt_in_kernel_allowed = true; |
84b058d7 JK |
1494 | |
1495 | kvm_init_irq_routing(s); | |
1496 | ||
197e3524 | 1497 | s->gsimap = g_hash_table_new(g_direct_hash, g_direct_equal); |
84b058d7 JK |
1498 | } |
1499 | ||
670436ce AJ |
1500 | /* Find number of supported CPUs using the recommended |
1501 | * procedure from the kernel API documentation to cope with | |
1502 | * older kernels that may be missing capabilities. | |
1503 | */ | |
1504 | static int kvm_recommended_vcpus(KVMState *s) | |
3ed444e9 | 1505 | { |
670436ce AJ |
1506 | int ret = kvm_check_extension(s, KVM_CAP_NR_VCPUS); |
1507 | return (ret) ? ret : 4; | |
1508 | } | |
3ed444e9 | 1509 | |
670436ce AJ |
1510 | static int kvm_max_vcpus(KVMState *s) |
1511 | { | |
1512 | int ret = kvm_check_extension(s, KVM_CAP_MAX_VCPUS); | |
1513 | return (ret) ? ret : kvm_recommended_vcpus(s); | |
3ed444e9 DH |
1514 | } |
1515 | ||
41264b38 GK |
1516 | bool kvm_vcpu_id_is_valid(int vcpu_id) |
1517 | { | |
1518 | KVMState *s = KVM_STATE(current_machine->accelerator); | |
1519 | return vcpu_id >= 0 && vcpu_id < kvm_max_vcpus(s); | |
1520 | } | |
1521 | ||
f6a1ef64 | 1522 | static int kvm_init(MachineState *ms) |
05330448 | 1523 | { |
f6a1ef64 | 1524 | MachineClass *mc = MACHINE_GET_CLASS(ms); |
168ccc11 JK |
1525 | static const char upgrade_note[] = |
1526 | "Please upgrade to at least kernel 2.6.29 or recent kvm-kmod\n" | |
1527 | "(see http://sourceforge.net/projects/kvm).\n"; | |
670436ce AJ |
1528 | struct { |
1529 | const char *name; | |
1530 | int num; | |
1531 | } num_cpus[] = { | |
1532 | { "SMP", smp_cpus }, | |
1533 | { "hotpluggable", max_cpus }, | |
1534 | { NULL, } | |
1535 | }, *nc = num_cpus; | |
1536 | int soft_vcpus_limit, hard_vcpus_limit; | |
05330448 | 1537 | KVMState *s; |
94a8d39a | 1538 | const KVMCapabilityInfo *missing_cap; |
05330448 | 1539 | int ret; |
7bbda04c | 1540 | int type = 0; |
135a129a | 1541 | const char *kvm_type; |
05330448 | 1542 | |
fc02086b | 1543 | s = KVM_STATE(ms->accelerator); |
05330448 | 1544 | |
3145fcb6 DG |
1545 | /* |
1546 | * On systems where the kernel can support different base page | |
1547 | * sizes, host page size may be different from TARGET_PAGE_SIZE, | |
1548 | * even with KVM. TARGET_PAGE_SIZE is assumed to be the minimum | |
1549 | * page size for the system though. | |
1550 | */ | |
1551 | assert(TARGET_PAGE_SIZE <= getpagesize()); | |
1552 | ||
aed6efb9 JH |
1553 | s->sigmask_len = 8; |
1554 | ||
e22a25c9 | 1555 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
72cf2d4f | 1556 | QTAILQ_INIT(&s->kvm_sw_breakpoints); |
e22a25c9 | 1557 | #endif |
4c055ab5 | 1558 | QLIST_INIT(&s->kvm_parked_vcpus); |
05330448 | 1559 | s->vmfd = -1; |
40ff6d7e | 1560 | s->fd = qemu_open("/dev/kvm", O_RDWR); |
05330448 AL |
1561 | if (s->fd == -1) { |
1562 | fprintf(stderr, "Could not access KVM kernel module: %m\n"); | |
1563 | ret = -errno; | |
1564 | goto err; | |
1565 | } | |
1566 | ||
1567 | ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0); | |
1568 | if (ret < KVM_API_VERSION) { | |
0e1dac6c | 1569 | if (ret >= 0) { |
05330448 | 1570 | ret = -EINVAL; |
a426e122 | 1571 | } |
05330448 AL |
1572 | fprintf(stderr, "kvm version too old\n"); |
1573 | goto err; | |
1574 | } | |
1575 | ||
1576 | if (ret > KVM_API_VERSION) { | |
1577 | ret = -EINVAL; | |
1578 | fprintf(stderr, "kvm version not supported\n"); | |
1579 | goto err; | |
1580 | } | |
1581 | ||
fb541ca5 AW |
1582 | s->nr_slots = kvm_check_extension(s, KVM_CAP_NR_MEMSLOTS); |
1583 | ||
1584 | /* If unspecified, use the default value */ | |
1585 | if (!s->nr_slots) { | |
1586 | s->nr_slots = 32; | |
1587 | } | |
1588 | ||
670436ce AJ |
1589 | /* check the vcpu limits */ |
1590 | soft_vcpus_limit = kvm_recommended_vcpus(s); | |
1591 | hard_vcpus_limit = kvm_max_vcpus(s); | |
3ed444e9 | 1592 | |
670436ce AJ |
1593 | while (nc->name) { |
1594 | if (nc->num > soft_vcpus_limit) { | |
1595 | fprintf(stderr, | |
1596 | "Warning: Number of %s cpus requested (%d) exceeds " | |
1597 | "the recommended cpus supported by KVM (%d)\n", | |
1598 | nc->name, nc->num, soft_vcpus_limit); | |
1599 | ||
1600 | if (nc->num > hard_vcpus_limit) { | |
670436ce AJ |
1601 | fprintf(stderr, "Number of %s cpus requested (%d) exceeds " |
1602 | "the maximum cpus supported by KVM (%d)\n", | |
1603 | nc->name, nc->num, hard_vcpus_limit); | |
9ba3cf54 | 1604 | exit(1); |
670436ce AJ |
1605 | } |
1606 | } | |
1607 | nc++; | |
7dc52526 MT |
1608 | } |
1609 | ||
135a129a | 1610 | kvm_type = qemu_opt_get(qemu_get_machine_opts(), "kvm-type"); |
f1e29879 MA |
1611 | if (mc->kvm_type) { |
1612 | type = mc->kvm_type(kvm_type); | |
135a129a | 1613 | } else if (kvm_type) { |
0e1dac6c | 1614 | ret = -EINVAL; |
135a129a AK |
1615 | fprintf(stderr, "Invalid argument kvm-type=%s\n", kvm_type); |
1616 | goto err; | |
1617 | } | |
1618 | ||
94ccff13 | 1619 | do { |
135a129a | 1620 | ret = kvm_ioctl(s, KVM_CREATE_VM, type); |
94ccff13 TK |
1621 | } while (ret == -EINTR); |
1622 | ||
1623 | if (ret < 0) { | |
521f438e | 1624 | fprintf(stderr, "ioctl(KVM_CREATE_VM) failed: %d %s\n", -ret, |
94ccff13 TK |
1625 | strerror(-ret)); |
1626 | ||
0104dcac | 1627 | #ifdef TARGET_S390X |
2c80e996 CH |
1628 | if (ret == -EINVAL) { |
1629 | fprintf(stderr, | |
1630 | "Host kernel setup problem detected. Please verify:\n"); | |
1631 | fprintf(stderr, "- for kernels supporting the switch_amode or" | |
1632 | " user_mode parameters, whether\n"); | |
1633 | fprintf(stderr, | |
1634 | " user space is running in primary address space\n"); | |
1635 | fprintf(stderr, | |
1636 | "- for kernels supporting the vm.allocate_pgste sysctl, " | |
1637 | "whether it is enabled\n"); | |
1638 | } | |
0104dcac | 1639 | #endif |
05330448 | 1640 | goto err; |
0104dcac | 1641 | } |
05330448 | 1642 | |
94ccff13 | 1643 | s->vmfd = ret; |
94a8d39a JK |
1644 | missing_cap = kvm_check_extension_list(s, kvm_required_capabilites); |
1645 | if (!missing_cap) { | |
1646 | missing_cap = | |
1647 | kvm_check_extension_list(s, kvm_arch_required_capabilities); | |
05330448 | 1648 | } |
94a8d39a | 1649 | if (missing_cap) { |
ad7b8b33 | 1650 | ret = -EINVAL; |
94a8d39a JK |
1651 | fprintf(stderr, "kvm does not support %s\n%s", |
1652 | missing_cap->name, upgrade_note); | |
d85dc283 AL |
1653 | goto err; |
1654 | } | |
1655 | ||
ad7b8b33 | 1656 | s->coalesced_mmio = kvm_check_extension(s, KVM_CAP_COALESCED_MMIO); |
f65ed4c1 | 1657 | |
e69917e2 | 1658 | s->broken_set_mem_region = 1; |
14a09518 | 1659 | ret = kvm_check_extension(s, KVM_CAP_JOIN_MEMORY_REGIONS_WORKS); |
e69917e2 JK |
1660 | if (ret > 0) { |
1661 | s->broken_set_mem_region = 0; | |
1662 | } | |
e69917e2 | 1663 | |
a0fb002c JK |
1664 | #ifdef KVM_CAP_VCPU_EVENTS |
1665 | s->vcpu_events = kvm_check_extension(s, KVM_CAP_VCPU_EVENTS); | |
1666 | #endif | |
1667 | ||
b0b1d690 JK |
1668 | s->robust_singlestep = |
1669 | kvm_check_extension(s, KVM_CAP_X86_ROBUST_SINGLESTEP); | |
b0b1d690 | 1670 | |
ff44f1a3 JK |
1671 | #ifdef KVM_CAP_DEBUGREGS |
1672 | s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS); | |
1673 | #endif | |
1674 | ||
d3d3bef0 | 1675 | #ifdef KVM_CAP_IRQ_ROUTING |
50bf31b9 | 1676 | kvm_direct_msi_allowed = (kvm_check_extension(s, KVM_CAP_SIGNAL_MSI) > 0); |
d3d3bef0 | 1677 | #endif |
4a3adebb | 1678 | |
3ab73842 JK |
1679 | s->intx_set_mask = kvm_check_extension(s, KVM_CAP_PCI_2_3); |
1680 | ||
e333cd69 | 1681 | s->irq_set_ioctl = KVM_IRQ_LINE; |
8732fbd2 | 1682 | if (kvm_check_extension(s, KVM_CAP_IRQ_INJECT_STATUS)) { |
e333cd69 | 1683 | s->irq_set_ioctl = KVM_IRQ_LINE_STATUS; |
8732fbd2 PM |
1684 | } |
1685 | ||
df9c8b75 JJ |
1686 | #ifdef KVM_CAP_READONLY_MEM |
1687 | kvm_readonly_mem_allowed = | |
1688 | (kvm_check_extension(s, KVM_CAP_READONLY_MEM) > 0); | |
1689 | #endif | |
1690 | ||
69e03ae6 NN |
1691 | kvm_eventfds_allowed = |
1692 | (kvm_check_extension(s, KVM_CAP_IOEVENTFD) > 0); | |
1693 | ||
f41389ae EA |
1694 | kvm_irqfds_allowed = |
1695 | (kvm_check_extension(s, KVM_CAP_IRQFD) > 0); | |
1696 | ||
1697 | kvm_resamplefds_allowed = | |
1698 | (kvm_check_extension(s, KVM_CAP_IRQFD_RESAMPLE) > 0); | |
1699 | ||
d0a073a1 DD |
1700 | kvm_vm_attributes_allowed = |
1701 | (kvm_check_extension(s, KVM_CAP_VM_ATTRIBUTES) > 0); | |
1702 | ||
35108223 JW |
1703 | kvm_ioeventfd_any_length_allowed = |
1704 | (kvm_check_extension(s, KVM_CAP_IOEVENTFD_ANY_LENGTH) > 0); | |
1705 | ||
b16565b3 | 1706 | ret = kvm_arch_init(ms, s); |
a426e122 | 1707 | if (ret < 0) { |
05330448 | 1708 | goto err; |
a426e122 | 1709 | } |
05330448 | 1710 | |
8db4936b PB |
1711 | if (machine_kernel_irqchip_allowed(ms)) { |
1712 | kvm_irqchip_create(ms, s); | |
84b058d7 JK |
1713 | } |
1714 | ||
05330448 | 1715 | kvm_state = s; |
7bbda04c | 1716 | |
8c56c1a5 PF |
1717 | if (kvm_eventfds_allowed) { |
1718 | s->memory_listener.listener.eventfd_add = kvm_mem_ioeventfd_add; | |
1719 | s->memory_listener.listener.eventfd_del = kvm_mem_ioeventfd_del; | |
1720 | } | |
7bbda04c PB |
1721 | s->memory_listener.listener.coalesced_mmio_add = kvm_coalesce_mmio_region; |
1722 | s->memory_listener.listener.coalesced_mmio_del = kvm_uncoalesce_mmio_region; | |
1723 | ||
1724 | kvm_memory_listener_register(s, &s->memory_listener, | |
38bfe691 | 1725 | &address_space_memory, 0); |
7bbda04c PB |
1726 | memory_listener_register(&kvm_io_listener, |
1727 | &address_space_io); | |
05330448 | 1728 | |
d2f2b8a7 SH |
1729 | s->many_ioeventfds = kvm_check_many_ioeventfds(); |
1730 | ||
aa7f74d1 JK |
1731 | cpu_interrupt_handler = kvm_handle_interrupt; |
1732 | ||
05330448 AL |
1733 | return 0; |
1734 | ||
1735 | err: | |
0e1dac6c | 1736 | assert(ret < 0); |
6d1cc321 SW |
1737 | if (s->vmfd >= 0) { |
1738 | close(s->vmfd); | |
1739 | } | |
1740 | if (s->fd != -1) { | |
1741 | close(s->fd); | |
05330448 | 1742 | } |
7bbda04c | 1743 | g_free(s->memory_listener.slots); |
05330448 AL |
1744 | |
1745 | return ret; | |
1746 | } | |
1747 | ||
aed6efb9 JH |
1748 | void kvm_set_sigmask_len(KVMState *s, unsigned int sigmask_len) |
1749 | { | |
1750 | s->sigmask_len = sigmask_len; | |
1751 | } | |
1752 | ||
4c663752 PB |
1753 | static void kvm_handle_io(uint16_t port, MemTxAttrs attrs, void *data, int direction, |
1754 | int size, uint32_t count) | |
05330448 AL |
1755 | { |
1756 | int i; | |
1757 | uint8_t *ptr = data; | |
1758 | ||
1759 | for (i = 0; i < count; i++) { | |
4c663752 | 1760 | address_space_rw(&address_space_io, port, attrs, |
5c9eb028 | 1761 | ptr, size, |
354678c5 | 1762 | direction == KVM_EXIT_IO_OUT); |
05330448 AL |
1763 | ptr += size; |
1764 | } | |
05330448 AL |
1765 | } |
1766 | ||
5326ab55 | 1767 | static int kvm_handle_internal_error(CPUState *cpu, struct kvm_run *run) |
7c80eef8 | 1768 | { |
977c7b6d RK |
1769 | fprintf(stderr, "KVM internal error. Suberror: %d\n", |
1770 | run->internal.suberror); | |
1771 | ||
7c80eef8 MT |
1772 | if (kvm_check_extension(kvm_state, KVM_CAP_INTERNAL_ERROR_DATA)) { |
1773 | int i; | |
1774 | ||
7c80eef8 MT |
1775 | for (i = 0; i < run->internal.ndata; ++i) { |
1776 | fprintf(stderr, "extra data[%d]: %"PRIx64"\n", | |
1777 | i, (uint64_t)run->internal.data[i]); | |
1778 | } | |
1779 | } | |
7c80eef8 MT |
1780 | if (run->internal.suberror == KVM_INTERNAL_ERROR_EMULATION) { |
1781 | fprintf(stderr, "emulation failure\n"); | |
20d695a9 | 1782 | if (!kvm_arch_stop_on_emulation_error(cpu)) { |
878096ee | 1783 | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_CODE); |
d73cd8f4 | 1784 | return EXCP_INTERRUPT; |
a426e122 | 1785 | } |
7c80eef8 MT |
1786 | } |
1787 | /* FIXME: Should trigger a qmp message to let management know | |
1788 | * something went wrong. | |
1789 | */ | |
73aaec4a | 1790 | return -1; |
7c80eef8 | 1791 | } |
7c80eef8 | 1792 | |
62a2744c | 1793 | void kvm_flush_coalesced_mmio_buffer(void) |
f65ed4c1 | 1794 | { |
f65ed4c1 | 1795 | KVMState *s = kvm_state; |
1cae88b9 AK |
1796 | |
1797 | if (s->coalesced_flush_in_progress) { | |
1798 | return; | |
1799 | } | |
1800 | ||
1801 | s->coalesced_flush_in_progress = true; | |
1802 | ||
62a2744c SY |
1803 | if (s->coalesced_mmio_ring) { |
1804 | struct kvm_coalesced_mmio_ring *ring = s->coalesced_mmio_ring; | |
f65ed4c1 AL |
1805 | while (ring->first != ring->last) { |
1806 | struct kvm_coalesced_mmio *ent; | |
1807 | ||
1808 | ent = &ring->coalesced_mmio[ring->first]; | |
1809 | ||
1810 | cpu_physical_memory_write(ent->phys_addr, ent->data, ent->len); | |
85199474 | 1811 | smp_wmb(); |
f65ed4c1 AL |
1812 | ring->first = (ring->first + 1) % KVM_COALESCED_MMIO_MAX; |
1813 | } | |
1814 | } | |
1cae88b9 AK |
1815 | |
1816 | s->coalesced_flush_in_progress = false; | |
f65ed4c1 AL |
1817 | } |
1818 | ||
20d695a9 | 1819 | static void do_kvm_cpu_synchronize_state(void *arg) |
4c0960c0 | 1820 | { |
20d695a9 | 1821 | CPUState *cpu = arg; |
2705d56a | 1822 | |
20d695a9 AF |
1823 | if (!cpu->kvm_vcpu_dirty) { |
1824 | kvm_arch_get_registers(cpu); | |
1825 | cpu->kvm_vcpu_dirty = true; | |
4c0960c0 AK |
1826 | } |
1827 | } | |
1828 | ||
dd1750d7 | 1829 | void kvm_cpu_synchronize_state(CPUState *cpu) |
2705d56a | 1830 | { |
20d695a9 AF |
1831 | if (!cpu->kvm_vcpu_dirty) { |
1832 | run_on_cpu(cpu, do_kvm_cpu_synchronize_state, cpu); | |
a426e122 | 1833 | } |
2705d56a JK |
1834 | } |
1835 | ||
c8e2085d | 1836 | static void do_kvm_cpu_synchronize_post_reset(void *arg) |
ea375f9a | 1837 | { |
c8e2085d DH |
1838 | CPUState *cpu = arg; |
1839 | ||
20d695a9 AF |
1840 | kvm_arch_put_registers(cpu, KVM_PUT_RESET_STATE); |
1841 | cpu->kvm_vcpu_dirty = false; | |
ea375f9a JK |
1842 | } |
1843 | ||
c8e2085d DH |
1844 | void kvm_cpu_synchronize_post_reset(CPUState *cpu) |
1845 | { | |
1846 | run_on_cpu(cpu, do_kvm_cpu_synchronize_post_reset, cpu); | |
1847 | } | |
1848 | ||
1849 | static void do_kvm_cpu_synchronize_post_init(void *arg) | |
ea375f9a | 1850 | { |
c8e2085d DH |
1851 | CPUState *cpu = arg; |
1852 | ||
20d695a9 AF |
1853 | kvm_arch_put_registers(cpu, KVM_PUT_FULL_STATE); |
1854 | cpu->kvm_vcpu_dirty = false; | |
ea375f9a JK |
1855 | } |
1856 | ||
c8e2085d DH |
1857 | void kvm_cpu_synchronize_post_init(CPUState *cpu) |
1858 | { | |
1859 | run_on_cpu(cpu, do_kvm_cpu_synchronize_post_init, cpu); | |
1860 | } | |
1861 | ||
1458c363 | 1862 | int kvm_cpu_exec(CPUState *cpu) |
05330448 | 1863 | { |
f7575c96 | 1864 | struct kvm_run *run = cpu->kvm_run; |
7cbb533f | 1865 | int ret, run_ret; |
05330448 | 1866 | |
8c0d577e | 1867 | DPRINTF("kvm_cpu_exec()\n"); |
05330448 | 1868 | |
20d695a9 | 1869 | if (kvm_arch_process_async_events(cpu)) { |
fcd7d003 | 1870 | cpu->exit_request = 0; |
6792a57b | 1871 | return EXCP_HLT; |
9ccfac9e | 1872 | } |
0af691d7 | 1873 | |
4b8523ee JK |
1874 | qemu_mutex_unlock_iothread(); |
1875 | ||
9ccfac9e | 1876 | do { |
4c663752 PB |
1877 | MemTxAttrs attrs; |
1878 | ||
20d695a9 AF |
1879 | if (cpu->kvm_vcpu_dirty) { |
1880 | kvm_arch_put_registers(cpu, KVM_PUT_RUNTIME_STATE); | |
1881 | cpu->kvm_vcpu_dirty = false; | |
4c0960c0 AK |
1882 | } |
1883 | ||
20d695a9 | 1884 | kvm_arch_pre_run(cpu, run); |
fcd7d003 | 1885 | if (cpu->exit_request) { |
9ccfac9e JK |
1886 | DPRINTF("interrupt exit requested\n"); |
1887 | /* | |
1888 | * KVM requires us to reenter the kernel after IO exits to complete | |
1889 | * instruction emulation. This self-signal will ensure that we | |
1890 | * leave ASAP again. | |
1891 | */ | |
1892 | qemu_cpu_kick_self(); | |
1893 | } | |
9ccfac9e | 1894 | |
1bc22652 | 1895 | run_ret = kvm_vcpu_ioctl(cpu, KVM_RUN, 0); |
9ccfac9e | 1896 | |
4c663752 | 1897 | attrs = kvm_arch_post_run(cpu, run); |
05330448 | 1898 | |
7cbb533f | 1899 | if (run_ret < 0) { |
dc77d341 JK |
1900 | if (run_ret == -EINTR || run_ret == -EAGAIN) { |
1901 | DPRINTF("io window exit\n"); | |
d73cd8f4 | 1902 | ret = EXCP_INTERRUPT; |
dc77d341 JK |
1903 | break; |
1904 | } | |
7b011fbc ME |
1905 | fprintf(stderr, "error: kvm run failed %s\n", |
1906 | strerror(-run_ret)); | |
dae02ba5 LV |
1907 | #ifdef TARGET_PPC |
1908 | if (run_ret == -EBUSY) { | |
1909 | fprintf(stderr, | |
1910 | "This is probably because your SMT is enabled.\n" | |
1911 | "VCPU can only run on primary threads with all " | |
1912 | "secondary threads offline.\n"); | |
1913 | } | |
1914 | #endif | |
a85e130e PB |
1915 | ret = -1; |
1916 | break; | |
05330448 AL |
1917 | } |
1918 | ||
b76ac80a | 1919 | trace_kvm_run_exit(cpu->cpu_index, run->exit_reason); |
05330448 AL |
1920 | switch (run->exit_reason) { |
1921 | case KVM_EXIT_IO: | |
8c0d577e | 1922 | DPRINTF("handle_io\n"); |
80b7d2ef | 1923 | /* Called outside BQL */ |
4c663752 | 1924 | kvm_handle_io(run->io.port, attrs, |
b30e93e9 JK |
1925 | (uint8_t *)run + run->io.data_offset, |
1926 | run->io.direction, | |
1927 | run->io.size, | |
1928 | run->io.count); | |
d73cd8f4 | 1929 | ret = 0; |
05330448 AL |
1930 | break; |
1931 | case KVM_EXIT_MMIO: | |
8c0d577e | 1932 | DPRINTF("handle_mmio\n"); |
de7ea885 | 1933 | /* Called outside BQL */ |
4c663752 PB |
1934 | address_space_rw(&address_space_memory, |
1935 | run->mmio.phys_addr, attrs, | |
1936 | run->mmio.data, | |
1937 | run->mmio.len, | |
1938 | run->mmio.is_write); | |
d73cd8f4 | 1939 | ret = 0; |
05330448 AL |
1940 | break; |
1941 | case KVM_EXIT_IRQ_WINDOW_OPEN: | |
8c0d577e | 1942 | DPRINTF("irq_window_open\n"); |
d73cd8f4 | 1943 | ret = EXCP_INTERRUPT; |
05330448 AL |
1944 | break; |
1945 | case KVM_EXIT_SHUTDOWN: | |
8c0d577e | 1946 | DPRINTF("shutdown\n"); |
05330448 | 1947 | qemu_system_reset_request(); |
d73cd8f4 | 1948 | ret = EXCP_INTERRUPT; |
05330448 AL |
1949 | break; |
1950 | case KVM_EXIT_UNKNOWN: | |
bb44e0d1 JK |
1951 | fprintf(stderr, "KVM: unknown exit, hardware reason %" PRIx64 "\n", |
1952 | (uint64_t)run->hw.hardware_exit_reason); | |
73aaec4a | 1953 | ret = -1; |
05330448 | 1954 | break; |
7c80eef8 | 1955 | case KVM_EXIT_INTERNAL_ERROR: |
5326ab55 | 1956 | ret = kvm_handle_internal_error(cpu, run); |
7c80eef8 | 1957 | break; |
99040447 PS |
1958 | case KVM_EXIT_SYSTEM_EVENT: |
1959 | switch (run->system_event.type) { | |
1960 | case KVM_SYSTEM_EVENT_SHUTDOWN: | |
1961 | qemu_system_shutdown_request(); | |
1962 | ret = EXCP_INTERRUPT; | |
1963 | break; | |
1964 | case KVM_SYSTEM_EVENT_RESET: | |
1965 | qemu_system_reset_request(); | |
1966 | ret = EXCP_INTERRUPT; | |
1967 | break; | |
7c207b90 AS |
1968 | case KVM_SYSTEM_EVENT_CRASH: |
1969 | qemu_mutex_lock_iothread(); | |
1970 | qemu_system_guest_panicked(); | |
1971 | qemu_mutex_unlock_iothread(); | |
1972 | ret = 0; | |
1973 | break; | |
99040447 PS |
1974 | default: |
1975 | DPRINTF("kvm_arch_handle_exit\n"); | |
1976 | ret = kvm_arch_handle_exit(cpu, run); | |
1977 | break; | |
1978 | } | |
1979 | break; | |
05330448 | 1980 | default: |
8c0d577e | 1981 | DPRINTF("kvm_arch_handle_exit\n"); |
20d695a9 | 1982 | ret = kvm_arch_handle_exit(cpu, run); |
05330448 AL |
1983 | break; |
1984 | } | |
d73cd8f4 | 1985 | } while (ret == 0); |
05330448 | 1986 | |
4b8523ee JK |
1987 | qemu_mutex_lock_iothread(); |
1988 | ||
73aaec4a | 1989 | if (ret < 0) { |
878096ee | 1990 | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_CODE); |
0461d5a6 | 1991 | vm_stop(RUN_STATE_INTERNAL_ERROR); |
becfc390 AL |
1992 | } |
1993 | ||
fcd7d003 | 1994 | cpu->exit_request = 0; |
05330448 AL |
1995 | return ret; |
1996 | } | |
1997 | ||
984b5181 | 1998 | int kvm_ioctl(KVMState *s, int type, ...) |
05330448 AL |
1999 | { |
2000 | int ret; | |
984b5181 AL |
2001 | void *arg; |
2002 | va_list ap; | |
05330448 | 2003 | |
984b5181 AL |
2004 | va_start(ap, type); |
2005 | arg = va_arg(ap, void *); | |
2006 | va_end(ap); | |
2007 | ||
9c775729 | 2008 | trace_kvm_ioctl(type, arg); |
984b5181 | 2009 | ret = ioctl(s->fd, type, arg); |
a426e122 | 2010 | if (ret == -1) { |
05330448 | 2011 | ret = -errno; |
a426e122 | 2012 | } |
05330448 AL |
2013 | return ret; |
2014 | } | |
2015 | ||
984b5181 | 2016 | int kvm_vm_ioctl(KVMState *s, int type, ...) |
05330448 AL |
2017 | { |
2018 | int ret; | |
984b5181 AL |
2019 | void *arg; |
2020 | va_list ap; | |
2021 | ||
2022 | va_start(ap, type); | |
2023 | arg = va_arg(ap, void *); | |
2024 | va_end(ap); | |
05330448 | 2025 | |
9c775729 | 2026 | trace_kvm_vm_ioctl(type, arg); |
984b5181 | 2027 | ret = ioctl(s->vmfd, type, arg); |
a426e122 | 2028 | if (ret == -1) { |
05330448 | 2029 | ret = -errno; |
a426e122 | 2030 | } |
05330448 AL |
2031 | return ret; |
2032 | } | |
2033 | ||
1bc22652 | 2034 | int kvm_vcpu_ioctl(CPUState *cpu, int type, ...) |
05330448 AL |
2035 | { |
2036 | int ret; | |
984b5181 AL |
2037 | void *arg; |
2038 | va_list ap; | |
2039 | ||
2040 | va_start(ap, type); | |
2041 | arg = va_arg(ap, void *); | |
2042 | va_end(ap); | |
05330448 | 2043 | |
9c775729 | 2044 | trace_kvm_vcpu_ioctl(cpu->cpu_index, type, arg); |
8737c51c | 2045 | ret = ioctl(cpu->kvm_fd, type, arg); |
a426e122 | 2046 | if (ret == -1) { |
05330448 | 2047 | ret = -errno; |
a426e122 | 2048 | } |
05330448 AL |
2049 | return ret; |
2050 | } | |
bd322087 | 2051 | |
0a6a7cca CD |
2052 | int kvm_device_ioctl(int fd, int type, ...) |
2053 | { | |
2054 | int ret; | |
2055 | void *arg; | |
2056 | va_list ap; | |
2057 | ||
2058 | va_start(ap, type); | |
2059 | arg = va_arg(ap, void *); | |
2060 | va_end(ap); | |
2061 | ||
2062 | trace_kvm_device_ioctl(fd, type, arg); | |
2063 | ret = ioctl(fd, type, arg); | |
2064 | if (ret == -1) { | |
2065 | ret = -errno; | |
2066 | } | |
2067 | return ret; | |
2068 | } | |
2069 | ||
d0a073a1 DD |
2070 | int kvm_vm_check_attr(KVMState *s, uint32_t group, uint64_t attr) |
2071 | { | |
2072 | int ret; | |
2073 | struct kvm_device_attr attribute = { | |
2074 | .group = group, | |
2075 | .attr = attr, | |
2076 | }; | |
2077 | ||
2078 | if (!kvm_vm_attributes_allowed) { | |
2079 | return 0; | |
2080 | } | |
2081 | ||
2082 | ret = kvm_vm_ioctl(s, KVM_HAS_DEVICE_ATTR, &attribute); | |
2083 | /* kvm returns 0 on success for HAS_DEVICE_ATTR */ | |
2084 | return ret ? 0 : 1; | |
2085 | } | |
2086 | ||
4b3cfe72 PF |
2087 | int kvm_device_check_attr(int dev_fd, uint32_t group, uint64_t attr) |
2088 | { | |
2089 | struct kvm_device_attr attribute = { | |
2090 | .group = group, | |
2091 | .attr = attr, | |
2092 | .flags = 0, | |
2093 | }; | |
2094 | ||
2095 | return kvm_device_ioctl(dev_fd, KVM_HAS_DEVICE_ATTR, &attribute) ? 0 : 1; | |
2096 | } | |
2097 | ||
2098 | void kvm_device_access(int fd, int group, uint64_t attr, | |
2099 | void *val, bool write) | |
2100 | { | |
2101 | struct kvm_device_attr kvmattr; | |
2102 | int err; | |
2103 | ||
2104 | kvmattr.flags = 0; | |
2105 | kvmattr.group = group; | |
2106 | kvmattr.attr = attr; | |
2107 | kvmattr.addr = (uintptr_t)val; | |
2108 | ||
2109 | err = kvm_device_ioctl(fd, | |
2110 | write ? KVM_SET_DEVICE_ATTR : KVM_GET_DEVICE_ATTR, | |
2111 | &kvmattr); | |
2112 | if (err < 0) { | |
433672b0 MA |
2113 | error_report("KVM_%s_DEVICE_ATTR failed: %s", |
2114 | write ? "SET" : "GET", strerror(-err)); | |
2115 | error_printf("Group %d attr 0x%016" PRIx64, group, attr); | |
4b3cfe72 PF |
2116 | abort(); |
2117 | } | |
2118 | } | |
2119 | ||
bd322087 AL |
2120 | int kvm_has_sync_mmu(void) |
2121 | { | |
94a8d39a | 2122 | return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU); |
bd322087 | 2123 | } |
e22a25c9 | 2124 | |
a0fb002c JK |
2125 | int kvm_has_vcpu_events(void) |
2126 | { | |
2127 | return kvm_state->vcpu_events; | |
2128 | } | |
2129 | ||
b0b1d690 JK |
2130 | int kvm_has_robust_singlestep(void) |
2131 | { | |
2132 | return kvm_state->robust_singlestep; | |
2133 | } | |
2134 | ||
ff44f1a3 JK |
2135 | int kvm_has_debugregs(void) |
2136 | { | |
2137 | return kvm_state->debugregs; | |
2138 | } | |
2139 | ||
d2f2b8a7 SH |
2140 | int kvm_has_many_ioeventfds(void) |
2141 | { | |
2142 | if (!kvm_enabled()) { | |
2143 | return 0; | |
2144 | } | |
2145 | return kvm_state->many_ioeventfds; | |
2146 | } | |
2147 | ||
84b058d7 JK |
2148 | int kvm_has_gsi_routing(void) |
2149 | { | |
a9c5eb0d | 2150 | #ifdef KVM_CAP_IRQ_ROUTING |
84b058d7 | 2151 | return kvm_check_extension(kvm_state, KVM_CAP_IRQ_ROUTING); |
a9c5eb0d AG |
2152 | #else |
2153 | return false; | |
2154 | #endif | |
84b058d7 JK |
2155 | } |
2156 | ||
3ab73842 JK |
2157 | int kvm_has_intx_set_mask(void) |
2158 | { | |
2159 | return kvm_state->intx_set_mask; | |
2160 | } | |
2161 | ||
6f0437e8 JK |
2162 | void kvm_setup_guest_memory(void *start, size_t size) |
2163 | { | |
2164 | if (!kvm_has_sync_mmu()) { | |
e78815a5 | 2165 | int ret = qemu_madvise(start, size, QEMU_MADV_DONTFORK); |
6f0437e8 JK |
2166 | |
2167 | if (ret) { | |
e78815a5 AF |
2168 | perror("qemu_madvise"); |
2169 | fprintf(stderr, | |
2170 | "Need MADV_DONTFORK in absence of synchronous KVM MMU\n"); | |
6f0437e8 JK |
2171 | exit(1); |
2172 | } | |
6f0437e8 JK |
2173 | } |
2174 | } | |
2175 | ||
e22a25c9 | 2176 | #ifdef KVM_CAP_SET_GUEST_DEBUG |
a60f24b5 | 2177 | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *cpu, |
e22a25c9 AL |
2178 | target_ulong pc) |
2179 | { | |
2180 | struct kvm_sw_breakpoint *bp; | |
2181 | ||
a60f24b5 | 2182 | QTAILQ_FOREACH(bp, &cpu->kvm_state->kvm_sw_breakpoints, entry) { |
a426e122 | 2183 | if (bp->pc == pc) { |
e22a25c9 | 2184 | return bp; |
a426e122 | 2185 | } |
e22a25c9 AL |
2186 | } |
2187 | return NULL; | |
2188 | } | |
2189 | ||
a60f24b5 | 2190 | int kvm_sw_breakpoints_active(CPUState *cpu) |
e22a25c9 | 2191 | { |
a60f24b5 | 2192 | return !QTAILQ_EMPTY(&cpu->kvm_state->kvm_sw_breakpoints); |
e22a25c9 AL |
2193 | } |
2194 | ||
452e4751 GC |
2195 | struct kvm_set_guest_debug_data { |
2196 | struct kvm_guest_debug dbg; | |
a60f24b5 | 2197 | CPUState *cpu; |
452e4751 GC |
2198 | int err; |
2199 | }; | |
2200 | ||
2201 | static void kvm_invoke_set_guest_debug(void *data) | |
2202 | { | |
2203 | struct kvm_set_guest_debug_data *dbg_data = data; | |
b3807725 | 2204 | |
a60f24b5 AF |
2205 | dbg_data->err = kvm_vcpu_ioctl(dbg_data->cpu, KVM_SET_GUEST_DEBUG, |
2206 | &dbg_data->dbg); | |
452e4751 GC |
2207 | } |
2208 | ||
38e478ec | 2209 | int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap) |
e22a25c9 | 2210 | { |
452e4751 | 2211 | struct kvm_set_guest_debug_data data; |
e22a25c9 | 2212 | |
b0b1d690 | 2213 | data.dbg.control = reinject_trap; |
e22a25c9 | 2214 | |
ed2803da | 2215 | if (cpu->singlestep_enabled) { |
b0b1d690 JK |
2216 | data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; |
2217 | } | |
20d695a9 | 2218 | kvm_arch_update_guest_debug(cpu, &data.dbg); |
a60f24b5 | 2219 | data.cpu = cpu; |
e22a25c9 | 2220 | |
f100f0b3 | 2221 | run_on_cpu(cpu, kvm_invoke_set_guest_debug, &data); |
452e4751 | 2222 | return data.err; |
e22a25c9 AL |
2223 | } |
2224 | ||
62278814 | 2225 | int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr, |
e22a25c9 AL |
2226 | target_ulong len, int type) |
2227 | { | |
2228 | struct kvm_sw_breakpoint *bp; | |
e22a25c9 AL |
2229 | int err; |
2230 | ||
2231 | if (type == GDB_BREAKPOINT_SW) { | |
80b7cd73 | 2232 | bp = kvm_find_sw_breakpoint(cpu, addr); |
e22a25c9 AL |
2233 | if (bp) { |
2234 | bp->use_count++; | |
2235 | return 0; | |
2236 | } | |
2237 | ||
7267c094 | 2238 | bp = g_malloc(sizeof(struct kvm_sw_breakpoint)); |
e22a25c9 AL |
2239 | bp->pc = addr; |
2240 | bp->use_count = 1; | |
80b7cd73 | 2241 | err = kvm_arch_insert_sw_breakpoint(cpu, bp); |
e22a25c9 | 2242 | if (err) { |
7267c094 | 2243 | g_free(bp); |
e22a25c9 AL |
2244 | return err; |
2245 | } | |
2246 | ||
80b7cd73 | 2247 | QTAILQ_INSERT_HEAD(&cpu->kvm_state->kvm_sw_breakpoints, bp, entry); |
e22a25c9 AL |
2248 | } else { |
2249 | err = kvm_arch_insert_hw_breakpoint(addr, len, type); | |
a426e122 | 2250 | if (err) { |
e22a25c9 | 2251 | return err; |
a426e122 | 2252 | } |
e22a25c9 AL |
2253 | } |
2254 | ||
bdc44640 | 2255 | CPU_FOREACH(cpu) { |
38e478ec | 2256 | err = kvm_update_guest_debug(cpu, 0); |
a426e122 | 2257 | if (err) { |
e22a25c9 | 2258 | return err; |
a426e122 | 2259 | } |
e22a25c9 AL |
2260 | } |
2261 | return 0; | |
2262 | } | |
2263 | ||
62278814 | 2264 | int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr, |
e22a25c9 AL |
2265 | target_ulong len, int type) |
2266 | { | |
2267 | struct kvm_sw_breakpoint *bp; | |
e22a25c9 AL |
2268 | int err; |
2269 | ||
2270 | if (type == GDB_BREAKPOINT_SW) { | |
80b7cd73 | 2271 | bp = kvm_find_sw_breakpoint(cpu, addr); |
a426e122 | 2272 | if (!bp) { |
e22a25c9 | 2273 | return -ENOENT; |
a426e122 | 2274 | } |
e22a25c9 AL |
2275 | |
2276 | if (bp->use_count > 1) { | |
2277 | bp->use_count--; | |
2278 | return 0; | |
2279 | } | |
2280 | ||
80b7cd73 | 2281 | err = kvm_arch_remove_sw_breakpoint(cpu, bp); |
a426e122 | 2282 | if (err) { |
e22a25c9 | 2283 | return err; |
a426e122 | 2284 | } |
e22a25c9 | 2285 | |
80b7cd73 | 2286 | QTAILQ_REMOVE(&cpu->kvm_state->kvm_sw_breakpoints, bp, entry); |
7267c094 | 2287 | g_free(bp); |
e22a25c9 AL |
2288 | } else { |
2289 | err = kvm_arch_remove_hw_breakpoint(addr, len, type); | |
a426e122 | 2290 | if (err) { |
e22a25c9 | 2291 | return err; |
a426e122 | 2292 | } |
e22a25c9 AL |
2293 | } |
2294 | ||
bdc44640 | 2295 | CPU_FOREACH(cpu) { |
38e478ec | 2296 | err = kvm_update_guest_debug(cpu, 0); |
a426e122 | 2297 | if (err) { |
e22a25c9 | 2298 | return err; |
a426e122 | 2299 | } |
e22a25c9 AL |
2300 | } |
2301 | return 0; | |
2302 | } | |
2303 | ||
1d5791f4 | 2304 | void kvm_remove_all_breakpoints(CPUState *cpu) |
e22a25c9 AL |
2305 | { |
2306 | struct kvm_sw_breakpoint *bp, *next; | |
80b7cd73 | 2307 | KVMState *s = cpu->kvm_state; |
dc54e252 | 2308 | CPUState *tmpcpu; |
e22a25c9 | 2309 | |
72cf2d4f | 2310 | QTAILQ_FOREACH_SAFE(bp, &s->kvm_sw_breakpoints, entry, next) { |
80b7cd73 | 2311 | if (kvm_arch_remove_sw_breakpoint(cpu, bp) != 0) { |
e22a25c9 | 2312 | /* Try harder to find a CPU that currently sees the breakpoint. */ |
dc54e252 CG |
2313 | CPU_FOREACH(tmpcpu) { |
2314 | if (kvm_arch_remove_sw_breakpoint(tmpcpu, bp) == 0) { | |
e22a25c9 | 2315 | break; |
a426e122 | 2316 | } |
e22a25c9 AL |
2317 | } |
2318 | } | |
78021d6d JK |
2319 | QTAILQ_REMOVE(&s->kvm_sw_breakpoints, bp, entry); |
2320 | g_free(bp); | |
e22a25c9 AL |
2321 | } |
2322 | kvm_arch_remove_all_hw_breakpoints(); | |
2323 | ||
bdc44640 | 2324 | CPU_FOREACH(cpu) { |
38e478ec | 2325 | kvm_update_guest_debug(cpu, 0); |
a426e122 | 2326 | } |
e22a25c9 AL |
2327 | } |
2328 | ||
2329 | #else /* !KVM_CAP_SET_GUEST_DEBUG */ | |
2330 | ||
38e478ec | 2331 | int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap) |
e22a25c9 AL |
2332 | { |
2333 | return -EINVAL; | |
2334 | } | |
2335 | ||
62278814 | 2336 | int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr, |
e22a25c9 AL |
2337 | target_ulong len, int type) |
2338 | { | |
2339 | return -EINVAL; | |
2340 | } | |
2341 | ||
62278814 | 2342 | int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr, |
e22a25c9 AL |
2343 | target_ulong len, int type) |
2344 | { | |
2345 | return -EINVAL; | |
2346 | } | |
2347 | ||
1d5791f4 | 2348 | void kvm_remove_all_breakpoints(CPUState *cpu) |
e22a25c9 AL |
2349 | { |
2350 | } | |
2351 | #endif /* !KVM_CAP_SET_GUEST_DEBUG */ | |
cc84de95 | 2352 | |
491d6e80 | 2353 | int kvm_set_signal_mask(CPUState *cpu, const sigset_t *sigset) |
cc84de95 | 2354 | { |
aed6efb9 | 2355 | KVMState *s = kvm_state; |
cc84de95 MT |
2356 | struct kvm_signal_mask *sigmask; |
2357 | int r; | |
2358 | ||
a426e122 | 2359 | if (!sigset) { |
1bc22652 | 2360 | return kvm_vcpu_ioctl(cpu, KVM_SET_SIGNAL_MASK, NULL); |
a426e122 | 2361 | } |
cc84de95 | 2362 | |
7267c094 | 2363 | sigmask = g_malloc(sizeof(*sigmask) + sizeof(*sigset)); |
cc84de95 | 2364 | |
aed6efb9 | 2365 | sigmask->len = s->sigmask_len; |
cc84de95 | 2366 | memcpy(sigmask->sigset, sigset, sizeof(*sigset)); |
1bc22652 | 2367 | r = kvm_vcpu_ioctl(cpu, KVM_SET_SIGNAL_MASK, sigmask); |
7267c094 | 2368 | g_free(sigmask); |
cc84de95 MT |
2369 | |
2370 | return r; | |
2371 | } | |
290adf38 | 2372 | int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr) |
a1b87fe0 | 2373 | { |
20d695a9 | 2374 | return kvm_arch_on_sigbus_vcpu(cpu, code, addr); |
a1b87fe0 JK |
2375 | } |
2376 | ||
2377 | int kvm_on_sigbus(int code, void *addr) | |
2378 | { | |
2379 | return kvm_arch_on_sigbus(code, addr); | |
2380 | } | |
0a6a7cca CD |
2381 | |
2382 | int kvm_create_device(KVMState *s, uint64_t type, bool test) | |
2383 | { | |
2384 | int ret; | |
2385 | struct kvm_create_device create_dev; | |
2386 | ||
2387 | create_dev.type = type; | |
2388 | create_dev.fd = -1; | |
2389 | create_dev.flags = test ? KVM_CREATE_DEVICE_TEST : 0; | |
2390 | ||
2391 | if (!kvm_check_extension(s, KVM_CAP_DEVICE_CTRL)) { | |
2392 | return -ENOTSUP; | |
2393 | } | |
2394 | ||
2395 | ret = kvm_vm_ioctl(s, KVM_CREATE_DEVICE, &create_dev); | |
2396 | if (ret) { | |
2397 | return ret; | |
2398 | } | |
2399 | ||
2400 | return test ? 0 : create_dev.fd; | |
2401 | } | |
ada4135f | 2402 | |
29039acf PX |
2403 | bool kvm_device_supported(int vmfd, uint64_t type) |
2404 | { | |
2405 | struct kvm_create_device create_dev = { | |
2406 | .type = type, | |
2407 | .fd = -1, | |
2408 | .flags = KVM_CREATE_DEVICE_TEST, | |
2409 | }; | |
2410 | ||
2411 | if (ioctl(vmfd, KVM_CHECK_EXTENSION, KVM_CAP_DEVICE_CTRL) <= 0) { | |
2412 | return false; | |
2413 | } | |
2414 | ||
2415 | return (ioctl(vmfd, KVM_CREATE_DEVICE, &create_dev) >= 0); | |
2416 | } | |
2417 | ||
ada4135f CH |
2418 | int kvm_set_one_reg(CPUState *cs, uint64_t id, void *source) |
2419 | { | |
2420 | struct kvm_one_reg reg; | |
2421 | int r; | |
2422 | ||
2423 | reg.id = id; | |
2424 | reg.addr = (uintptr_t) source; | |
2425 | r = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); | |
2426 | if (r) { | |
844a3d34 | 2427 | trace_kvm_failed_reg_set(id, strerror(-r)); |
ada4135f CH |
2428 | } |
2429 | return r; | |
2430 | } | |
2431 | ||
2432 | int kvm_get_one_reg(CPUState *cs, uint64_t id, void *target) | |
2433 | { | |
2434 | struct kvm_one_reg reg; | |
2435 | int r; | |
2436 | ||
2437 | reg.id = id; | |
2438 | reg.addr = (uintptr_t) target; | |
2439 | r = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); | |
2440 | if (r) { | |
844a3d34 | 2441 | trace_kvm_failed_reg_get(id, strerror(-r)); |
ada4135f CH |
2442 | } |
2443 | return r; | |
2444 | } | |
782c3f29 EH |
2445 | |
2446 | static void kvm_accel_class_init(ObjectClass *oc, void *data) | |
2447 | { | |
2448 | AccelClass *ac = ACCEL_CLASS(oc); | |
2449 | ac->name = "KVM"; | |
0d15da8e | 2450 | ac->init_machine = kvm_init; |
782c3f29 EH |
2451 | ac->allowed = &kvm_allowed; |
2452 | } | |
2453 | ||
2454 | static const TypeInfo kvm_accel_type = { | |
2455 | .name = TYPE_KVM_ACCEL, | |
2456 | .parent = TYPE_ACCEL, | |
2457 | .class_init = kvm_accel_class_init, | |
fc02086b | 2458 | .instance_size = sizeof(KVMState), |
782c3f29 EH |
2459 | }; |
2460 | ||
2461 | static void kvm_type_init(void) | |
2462 | { | |
2463 | type_register_static(&kvm_accel_type); | |
2464 | } | |
2465 | ||
2466 | type_init(kvm_type_init); |