Commit | Line | Data |
---|---|---|
783e9e51 PB |
1 | /* |
2 | * tools/testing/selftests/kvm/lib/kvm_util.c | |
3 | * | |
4 | * Copyright (C) 2018, Google LLC. | |
5 | * | |
6 | * This work is licensed under the terms of the GNU GPL, version 2. | |
7 | */ | |
8 | ||
9 | #include "test_util.h" | |
10 | #include "kvm_util.h" | |
11 | #include "kvm_util_internal.h" | |
12 | ||
13 | #include <assert.h> | |
14 | #include <sys/mman.h> | |
15 | #include <sys/types.h> | |
16 | #include <sys/stat.h> | |
bc8eb2fe | 17 | #include <linux/kernel.h> |
783e9e51 PB |
18 | |
19 | #define KVM_DEV_PATH "/dev/kvm" | |
20 | ||
21 | #define KVM_UTIL_PGS_PER_HUGEPG 512 | |
22 | #define KVM_UTIL_MIN_PADDR 0x2000 | |
23 | ||
24 | /* Aligns x up to the next multiple of size. Size must be a power of 2. */ | |
25 | static void *align(void *x, size_t size) | |
26 | { | |
27 | size_t mask = size - 1; | |
28 | TEST_ASSERT(size != 0 && !(size & (size - 1)), | |
29 | "size not a power of 2: %lu", size); | |
30 | return (void *) (((size_t) x + mask) & ~mask); | |
31 | } | |
32 | ||
33 | /* Capability | |
34 | * | |
35 | * Input Args: | |
36 | * cap - Capability | |
37 | * | |
38 | * Output Args: None | |
39 | * | |
40 | * Return: | |
41 | * On success, the Value corresponding to the capability (KVM_CAP_*) | |
42 | * specified by the value of cap. On failure a TEST_ASSERT failure | |
43 | * is produced. | |
44 | * | |
45 | * Looks up and returns the value corresponding to the capability | |
46 | * (KVM_CAP_*) given by cap. | |
47 | */ | |
48 | int kvm_check_cap(long cap) | |
49 | { | |
50 | int ret; | |
51 | int kvm_fd; | |
52 | ||
53 | kvm_fd = open(KVM_DEV_PATH, O_RDONLY); | |
bcb2b94a PB |
54 | if (kvm_fd < 0) |
55 | exit(KSFT_SKIP); | |
783e9e51 PB |
56 | |
57 | ret = ioctl(kvm_fd, KVM_CHECK_EXTENSION, cap); | |
58 | TEST_ASSERT(ret != -1, "KVM_CHECK_EXTENSION IOCTL failed,\n" | |
59 | " rc: %i errno: %i", ret, errno); | |
60 | ||
61 | close(kvm_fd); | |
62 | ||
63 | return ret; | |
64 | } | |
65 | ||
8b56ee91 DS |
66 | /* VM Enable Capability |
67 | * | |
68 | * Input Args: | |
69 | * vm - Virtual Machine | |
70 | * cap - Capability | |
71 | * | |
72 | * Output Args: None | |
73 | * | |
74 | * Return: On success, 0. On failure a TEST_ASSERT failure is produced. | |
75 | * | |
76 | * Enables a capability (KVM_CAP_*) on the VM. | |
77 | */ | |
78 | int vm_enable_cap(struct kvm_vm *vm, struct kvm_enable_cap *cap) | |
79 | { | |
80 | int ret; | |
81 | ||
82 | ret = ioctl(vm->fd, KVM_ENABLE_CAP, cap); | |
83 | TEST_ASSERT(ret == 0, "KVM_ENABLE_CAP IOCTL failed,\n" | |
84 | " rc: %i errno: %i", ret, errno); | |
85 | ||
86 | return ret; | |
87 | } | |
88 | ||
fa3899ad PB |
89 | static void vm_open(struct kvm_vm *vm, int perm) |
90 | { | |
91 | vm->kvm_fd = open(KVM_DEV_PATH, perm); | |
92 | if (vm->kvm_fd < 0) | |
93 | exit(KSFT_SKIP); | |
94 | ||
95 | /* Create VM. */ | |
96 | vm->fd = ioctl(vm->kvm_fd, KVM_CREATE_VM, NULL); | |
97 | TEST_ASSERT(vm->fd >= 0, "KVM_CREATE_VM ioctl failed, " | |
98 | "rc: %i errno: %i", vm->fd, errno); | |
99 | } | |
100 | ||
783e9e51 PB |
101 | /* VM Create |
102 | * | |
103 | * Input Args: | |
104 | * mode - VM Mode (e.g. VM_MODE_FLAT48PG) | |
105 | * phy_pages - Physical memory pages | |
106 | * perm - permission | |
107 | * | |
108 | * Output Args: None | |
109 | * | |
110 | * Return: | |
111 | * Pointer to opaque structure that describes the created VM. | |
112 | * | |
113 | * Creates a VM with the mode specified by mode (e.g. VM_MODE_FLAT48PG). | |
114 | * When phy_pages is non-zero, a memory region of phy_pages physical pages | |
115 | * is created and mapped starting at guest physical address 0. The file | |
116 | * descriptor to control the created VM is created with the permissions | |
117 | * given by perm (e.g. O_RDWR). | |
118 | */ | |
119 | struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm) | |
120 | { | |
121 | struct kvm_vm *vm; | |
122 | int kvm_fd; | |
123 | ||
124 | /* Allocate memory. */ | |
125 | vm = calloc(1, sizeof(*vm)); | |
126 | TEST_ASSERT(vm != NULL, "Insufficent Memory"); | |
127 | ||
128 | vm->mode = mode; | |
fa3899ad | 129 | vm_open(vm, perm); |
783e9e51 PB |
130 | |
131 | /* Setup mode specific traits. */ | |
132 | switch (vm->mode) { | |
133 | case VM_MODE_FLAT48PG: | |
134 | vm->page_size = 0x1000; | |
135 | vm->page_shift = 12; | |
136 | ||
137 | /* Limit to 48-bit canonical virtual addresses. */ | |
138 | vm->vpages_valid = sparsebit_alloc(); | |
139 | sparsebit_set_num(vm->vpages_valid, | |
140 | 0, (1ULL << (48 - 1)) >> vm->page_shift); | |
141 | sparsebit_set_num(vm->vpages_valid, | |
142 | (~((1ULL << (48 - 1)) - 1)) >> vm->page_shift, | |
143 | (1ULL << (48 - 1)) >> vm->page_shift); | |
144 | ||
145 | /* Limit physical addresses to 52-bits. */ | |
146 | vm->max_gfn = ((1ULL << 52) >> vm->page_shift) - 1; | |
147 | break; | |
148 | ||
149 | default: | |
150 | TEST_ASSERT(false, "Unknown guest mode, mode: 0x%x", mode); | |
151 | } | |
152 | ||
153 | /* Allocate and setup memory for guest. */ | |
154 | vm->vpages_mapped = sparsebit_alloc(); | |
155 | if (phy_pages != 0) | |
156 | vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS, | |
157 | 0, 0, phy_pages, 0); | |
158 | ||
159 | return vm; | |
160 | } | |
161 | ||
fa3899ad PB |
162 | /* VM Restart |
163 | * | |
164 | * Input Args: | |
165 | * vm - VM that has been released before | |
166 | * perm - permission | |
167 | * | |
168 | * Output Args: None | |
169 | * | |
170 | * Reopens the file descriptors associated to the VM and reinstates the | |
171 | * global state, such as the irqchip and the memory regions that are mapped | |
172 | * into the guest. | |
173 | */ | |
174 | void kvm_vm_restart(struct kvm_vm *vmp, int perm) | |
175 | { | |
176 | struct userspace_mem_region *region; | |
177 | ||
178 | vm_open(vmp, perm); | |
179 | if (vmp->has_irqchip) | |
180 | vm_create_irqchip(vmp); | |
181 | ||
182 | for (region = vmp->userspace_mem_region_head; region; | |
183 | region = region->next) { | |
184 | int ret = ioctl(vmp->fd, KVM_SET_USER_MEMORY_REGION, ®ion->region); | |
185 | TEST_ASSERT(ret == 0, "KVM_SET_USER_MEMORY_REGION IOCTL failed,\n" | |
186 | " rc: %i errno: %i\n" | |
187 | " slot: %u flags: 0x%x\n" | |
188 | " guest_phys_addr: 0x%lx size: 0x%lx", | |
189 | ret, errno, region->region.slot, region->region.flags, | |
190 | region->region.guest_phys_addr, | |
191 | region->region.memory_size); | |
192 | } | |
193 | } | |
194 | ||
3b4cd0ff PX |
195 | void kvm_vm_get_dirty_log(struct kvm_vm *vm, int slot, void *log) |
196 | { | |
197 | struct kvm_dirty_log args = { .dirty_bitmap = log, .slot = slot }; | |
198 | int ret; | |
199 | ||
200 | ret = ioctl(vm->fd, KVM_GET_DIRTY_LOG, &args); | |
201 | TEST_ASSERT(ret == 0, "%s: KVM_GET_DIRTY_LOG failed: %s", | |
202 | strerror(-ret)); | |
203 | } | |
204 | ||
783e9e51 PB |
205 | /* Userspace Memory Region Find |
206 | * | |
207 | * Input Args: | |
208 | * vm - Virtual Machine | |
209 | * start - Starting VM physical address | |
210 | * end - Ending VM physical address, inclusive. | |
211 | * | |
212 | * Output Args: None | |
213 | * | |
214 | * Return: | |
215 | * Pointer to overlapping region, NULL if no such region. | |
216 | * | |
217 | * Searches for a region with any physical memory that overlaps with | |
218 | * any portion of the guest physical addresses from start to end | |
219 | * inclusive. If multiple overlapping regions exist, a pointer to any | |
220 | * of the regions is returned. Null is returned only when no overlapping | |
221 | * region exists. | |
222 | */ | |
223 | static struct userspace_mem_region *userspace_mem_region_find( | |
224 | struct kvm_vm *vm, uint64_t start, uint64_t end) | |
225 | { | |
226 | struct userspace_mem_region *region; | |
227 | ||
228 | for (region = vm->userspace_mem_region_head; region; | |
229 | region = region->next) { | |
230 | uint64_t existing_start = region->region.guest_phys_addr; | |
231 | uint64_t existing_end = region->region.guest_phys_addr | |
232 | + region->region.memory_size - 1; | |
233 | if (start <= existing_end && end >= existing_start) | |
234 | return region; | |
235 | } | |
236 | ||
237 | return NULL; | |
238 | } | |
239 | ||
240 | /* KVM Userspace Memory Region Find | |
241 | * | |
242 | * Input Args: | |
243 | * vm - Virtual Machine | |
244 | * start - Starting VM physical address | |
245 | * end - Ending VM physical address, inclusive. | |
246 | * | |
247 | * Output Args: None | |
248 | * | |
249 | * Return: | |
250 | * Pointer to overlapping region, NULL if no such region. | |
251 | * | |
252 | * Public interface to userspace_mem_region_find. Allows tests to look up | |
253 | * the memslot datastructure for a given range of guest physical memory. | |
254 | */ | |
255 | struct kvm_userspace_memory_region * | |
256 | kvm_userspace_memory_region_find(struct kvm_vm *vm, uint64_t start, | |
257 | uint64_t end) | |
258 | { | |
259 | struct userspace_mem_region *region; | |
260 | ||
261 | region = userspace_mem_region_find(vm, start, end); | |
262 | if (!region) | |
263 | return NULL; | |
264 | ||
265 | return ®ion->region; | |
266 | } | |
267 | ||
268 | /* VCPU Find | |
269 | * | |
270 | * Input Args: | |
271 | * vm - Virtual Machine | |
272 | * vcpuid - VCPU ID | |
273 | * | |
274 | * Output Args: None | |
275 | * | |
276 | * Return: | |
277 | * Pointer to VCPU structure | |
278 | * | |
279 | * Locates a vcpu structure that describes the VCPU specified by vcpuid and | |
280 | * returns a pointer to it. Returns NULL if the VM doesn't contain a VCPU | |
281 | * for the specified vcpuid. | |
282 | */ | |
283 | struct vcpu *vcpu_find(struct kvm_vm *vm, | |
284 | uint32_t vcpuid) | |
285 | { | |
286 | struct vcpu *vcpup; | |
287 | ||
288 | for (vcpup = vm->vcpu_head; vcpup; vcpup = vcpup->next) { | |
289 | if (vcpup->id == vcpuid) | |
290 | return vcpup; | |
291 | } | |
292 | ||
293 | return NULL; | |
294 | } | |
295 | ||
296 | /* VM VCPU Remove | |
297 | * | |
298 | * Input Args: | |
299 | * vm - Virtual Machine | |
300 | * vcpuid - VCPU ID | |
301 | * | |
302 | * Output Args: None | |
303 | * | |
304 | * Return: None, TEST_ASSERT failures for all error conditions | |
305 | * | |
306 | * Within the VM specified by vm, removes the VCPU given by vcpuid. | |
307 | */ | |
308 | static void vm_vcpu_rm(struct kvm_vm *vm, uint32_t vcpuid) | |
309 | { | |
310 | struct vcpu *vcpu = vcpu_find(vm, vcpuid); | |
0a505fe6 | 311 | int ret; |
783e9e51 | 312 | |
0a505fe6 PB |
313 | ret = munmap(vcpu->state, sizeof(*vcpu->state)); |
314 | TEST_ASSERT(ret == 0, "munmap of VCPU fd failed, rc: %i " | |
315 | "errno: %i", ret, errno); | |
316 | close(vcpu->fd); | |
783e9e51 PB |
317 | TEST_ASSERT(ret == 0, "Close of VCPU fd failed, rc: %i " |
318 | "errno: %i", ret, errno); | |
319 | ||
320 | if (vcpu->next) | |
321 | vcpu->next->prev = vcpu->prev; | |
322 | if (vcpu->prev) | |
323 | vcpu->prev->next = vcpu->next; | |
324 | else | |
325 | vm->vcpu_head = vcpu->next; | |
326 | free(vcpu); | |
327 | } | |
328 | ||
fa3899ad PB |
329 | void kvm_vm_release(struct kvm_vm *vmp) |
330 | { | |
331 | int ret; | |
332 | ||
333 | /* Free VCPUs. */ | |
334 | while (vmp->vcpu_head) | |
335 | vm_vcpu_rm(vmp, vmp->vcpu_head->id); | |
336 | ||
337 | /* Close file descriptor for the VM. */ | |
338 | ret = close(vmp->fd); | |
339 | TEST_ASSERT(ret == 0, "Close of vm fd failed,\n" | |
340 | " vmp->fd: %i rc: %i errno: %i", vmp->fd, ret, errno); | |
341 | ||
342 | close(vmp->kvm_fd); | |
343 | TEST_ASSERT(ret == 0, "Close of /dev/kvm fd failed,\n" | |
344 | " vmp->kvm_fd: %i rc: %i errno: %i", vmp->kvm_fd, ret, errno); | |
345 | } | |
783e9e51 PB |
346 | |
347 | /* Destroys and frees the VM pointed to by vmp. | |
348 | */ | |
349 | void kvm_vm_free(struct kvm_vm *vmp) | |
350 | { | |
351 | int ret; | |
352 | ||
353 | if (vmp == NULL) | |
354 | return; | |
355 | ||
356 | /* Free userspace_mem_regions. */ | |
357 | while (vmp->userspace_mem_region_head) { | |
358 | struct userspace_mem_region *region | |
359 | = vmp->userspace_mem_region_head; | |
360 | ||
361 | region->region.memory_size = 0; | |
362 | ret = ioctl(vmp->fd, KVM_SET_USER_MEMORY_REGION, | |
363 | ®ion->region); | |
364 | TEST_ASSERT(ret == 0, "KVM_SET_USER_MEMORY_REGION IOCTL failed, " | |
365 | "rc: %i errno: %i", ret, errno); | |
366 | ||
367 | vmp->userspace_mem_region_head = region->next; | |
368 | sparsebit_free(®ion->unused_phy_pages); | |
369 | ret = munmap(region->mmap_start, region->mmap_size); | |
370 | TEST_ASSERT(ret == 0, "munmap failed, rc: %i errno: %i", | |
371 | ret, errno); | |
372 | ||
373 | free(region); | |
374 | } | |
375 | ||
783e9e51 PB |
376 | /* Free sparsebit arrays. */ |
377 | sparsebit_free(&vmp->vpages_valid); | |
378 | sparsebit_free(&vmp->vpages_mapped); | |
379 | ||
fa3899ad | 380 | kvm_vm_release(vmp); |
783e9e51 PB |
381 | |
382 | /* Free the structure describing the VM. */ | |
383 | free(vmp); | |
384 | } | |
385 | ||
386 | /* Memory Compare, host virtual to guest virtual | |
387 | * | |
388 | * Input Args: | |
389 | * hva - Starting host virtual address | |
390 | * vm - Virtual Machine | |
391 | * gva - Starting guest virtual address | |
392 | * len - number of bytes to compare | |
393 | * | |
394 | * Output Args: None | |
395 | * | |
396 | * Input/Output Args: None | |
397 | * | |
398 | * Return: | |
399 | * Returns 0 if the bytes starting at hva for a length of len | |
400 | * are equal the guest virtual bytes starting at gva. Returns | |
401 | * a value < 0, if bytes at hva are less than those at gva. | |
402 | * Otherwise a value > 0 is returned. | |
403 | * | |
404 | * Compares the bytes starting at the host virtual address hva, for | |
405 | * a length of len, to the guest bytes starting at the guest virtual | |
406 | * address given by gva. | |
407 | */ | |
408 | int kvm_memcmp_hva_gva(void *hva, | |
409 | struct kvm_vm *vm, vm_vaddr_t gva, size_t len) | |
410 | { | |
411 | size_t amt; | |
412 | ||
413 | /* Compare a batch of bytes until either a match is found | |
414 | * or all the bytes have been compared. | |
415 | */ | |
416 | for (uintptr_t offset = 0; offset < len; offset += amt) { | |
417 | uintptr_t ptr1 = (uintptr_t)hva + offset; | |
418 | ||
419 | /* Determine host address for guest virtual address | |
420 | * at offset. | |
421 | */ | |
422 | uintptr_t ptr2 = (uintptr_t)addr_gva2hva(vm, gva + offset); | |
423 | ||
424 | /* Determine amount to compare on this pass. | |
425 | * Don't allow the comparsion to cross a page boundary. | |
426 | */ | |
427 | amt = len - offset; | |
428 | if ((ptr1 >> vm->page_shift) != ((ptr1 + amt) >> vm->page_shift)) | |
429 | amt = vm->page_size - (ptr1 % vm->page_size); | |
430 | if ((ptr2 >> vm->page_shift) != ((ptr2 + amt) >> vm->page_shift)) | |
431 | amt = vm->page_size - (ptr2 % vm->page_size); | |
432 | ||
433 | assert((ptr1 >> vm->page_shift) == ((ptr1 + amt - 1) >> vm->page_shift)); | |
434 | assert((ptr2 >> vm->page_shift) == ((ptr2 + amt - 1) >> vm->page_shift)); | |
435 | ||
436 | /* Perform the comparison. If there is a difference | |
437 | * return that result to the caller, otherwise need | |
438 | * to continue on looking for a mismatch. | |
439 | */ | |
440 | int ret = memcmp((void *)ptr1, (void *)ptr2, amt); | |
441 | if (ret != 0) | |
442 | return ret; | |
443 | } | |
444 | ||
445 | /* No mismatch found. Let the caller know the two memory | |
446 | * areas are equal. | |
447 | */ | |
448 | return 0; | |
449 | } | |
450 | ||
451 | /* Allocate an instance of struct kvm_cpuid2 | |
452 | * | |
453 | * Input Args: None | |
454 | * | |
455 | * Output Args: None | |
456 | * | |
457 | * Return: A pointer to the allocated struct. The caller is responsible | |
458 | * for freeing this struct. | |
459 | * | |
460 | * Since kvm_cpuid2 uses a 0-length array to allow a the size of the | |
461 | * array to be decided at allocation time, allocation is slightly | |
462 | * complicated. This function uses a reasonable default length for | |
463 | * the array and performs the appropriate allocation. | |
464 | */ | |
d5edb7f8 | 465 | static struct kvm_cpuid2 *allocate_kvm_cpuid2(void) |
783e9e51 PB |
466 | { |
467 | struct kvm_cpuid2 *cpuid; | |
468 | int nent = 100; | |
469 | size_t size; | |
470 | ||
471 | size = sizeof(*cpuid); | |
472 | size += nent * sizeof(struct kvm_cpuid_entry2); | |
473 | cpuid = malloc(size); | |
474 | if (!cpuid) { | |
475 | perror("malloc"); | |
476 | abort(); | |
477 | } | |
478 | ||
479 | cpuid->nent = nent; | |
480 | ||
481 | return cpuid; | |
482 | } | |
483 | ||
484 | /* KVM Supported CPUID Get | |
485 | * | |
486 | * Input Args: None | |
487 | * | |
488 | * Output Args: | |
783e9e51 | 489 | * |
d5edb7f8 | 490 | * Return: The supported KVM CPUID |
783e9e51 PB |
491 | * |
492 | * Get the guest CPUID supported by KVM. | |
493 | */ | |
d5edb7f8 | 494 | struct kvm_cpuid2 *kvm_get_supported_cpuid(void) |
783e9e51 | 495 | { |
d5edb7f8 | 496 | static struct kvm_cpuid2 *cpuid; |
783e9e51 PB |
497 | int ret; |
498 | int kvm_fd; | |
499 | ||
d5edb7f8 PB |
500 | if (cpuid) |
501 | return cpuid; | |
502 | ||
503 | cpuid = allocate_kvm_cpuid2(); | |
783e9e51 | 504 | kvm_fd = open(KVM_DEV_PATH, O_RDONLY); |
bcb2b94a PB |
505 | if (kvm_fd < 0) |
506 | exit(KSFT_SKIP); | |
783e9e51 PB |
507 | |
508 | ret = ioctl(kvm_fd, KVM_GET_SUPPORTED_CPUID, cpuid); | |
509 | TEST_ASSERT(ret == 0, "KVM_GET_SUPPORTED_CPUID failed %d %d\n", | |
510 | ret, errno); | |
511 | ||
512 | close(kvm_fd); | |
d5edb7f8 | 513 | return cpuid; |
783e9e51 PB |
514 | } |
515 | ||
516 | /* Locate a cpuid entry. | |
517 | * | |
518 | * Input Args: | |
519 | * cpuid: The cpuid. | |
520 | * function: The function of the cpuid entry to find. | |
521 | * | |
522 | * Output Args: None | |
523 | * | |
524 | * Return: A pointer to the cpuid entry. Never returns NULL. | |
525 | */ | |
526 | struct kvm_cpuid_entry2 * | |
d5edb7f8 | 527 | kvm_get_supported_cpuid_index(uint32_t function, uint32_t index) |
783e9e51 | 528 | { |
d5edb7f8 | 529 | struct kvm_cpuid2 *cpuid; |
783e9e51 PB |
530 | struct kvm_cpuid_entry2 *entry = NULL; |
531 | int i; | |
532 | ||
d5edb7f8 | 533 | cpuid = kvm_get_supported_cpuid(); |
783e9e51 PB |
534 | for (i = 0; i < cpuid->nent; i++) { |
535 | if (cpuid->entries[i].function == function && | |
536 | cpuid->entries[i].index == index) { | |
537 | entry = &cpuid->entries[i]; | |
538 | break; | |
539 | } | |
540 | } | |
541 | ||
542 | TEST_ASSERT(entry, "Guest CPUID entry not found: (EAX=%x, ECX=%x).", | |
543 | function, index); | |
544 | return entry; | |
545 | } | |
546 | ||
547 | /* VM Userspace Memory Region Add | |
548 | * | |
549 | * Input Args: | |
550 | * vm - Virtual Machine | |
551 | * backing_src - Storage source for this region. | |
552 | * NULL to use anonymous memory. | |
553 | * guest_paddr - Starting guest physical address | |
554 | * slot - KVM region slot | |
555 | * npages - Number of physical pages | |
556 | * flags - KVM memory region flags (e.g. KVM_MEM_LOG_DIRTY_PAGES) | |
557 | * | |
558 | * Output Args: None | |
559 | * | |
560 | * Return: None | |
561 | * | |
562 | * Allocates a memory area of the number of pages specified by npages | |
563 | * and maps it to the VM specified by vm, at a starting physical address | |
564 | * given by guest_paddr. The region is created with a KVM region slot | |
565 | * given by slot, which must be unique and < KVM_MEM_SLOTS_NUM. The | |
566 | * region is created with the flags given by flags. | |
567 | */ | |
568 | void vm_userspace_mem_region_add(struct kvm_vm *vm, | |
569 | enum vm_mem_backing_src_type src_type, | |
570 | uint64_t guest_paddr, uint32_t slot, uint64_t npages, | |
571 | uint32_t flags) | |
572 | { | |
573 | int ret; | |
574 | unsigned long pmem_size = 0; | |
575 | struct userspace_mem_region *region; | |
576 | size_t huge_page_size = KVM_UTIL_PGS_PER_HUGEPG * vm->page_size; | |
577 | ||
578 | TEST_ASSERT((guest_paddr % vm->page_size) == 0, "Guest physical " | |
579 | "address not on a page boundary.\n" | |
580 | " guest_paddr: 0x%lx vm->page_size: 0x%x", | |
581 | guest_paddr, vm->page_size); | |
582 | TEST_ASSERT((((guest_paddr >> vm->page_shift) + npages) - 1) | |
583 | <= vm->max_gfn, "Physical range beyond maximum " | |
584 | "supported physical address,\n" | |
585 | " guest_paddr: 0x%lx npages: 0x%lx\n" | |
586 | " vm->max_gfn: 0x%lx vm->page_size: 0x%x", | |
587 | guest_paddr, npages, vm->max_gfn, vm->page_size); | |
588 | ||
589 | /* Confirm a mem region with an overlapping address doesn't | |
590 | * already exist. | |
591 | */ | |
592 | region = (struct userspace_mem_region *) userspace_mem_region_find( | |
593 | vm, guest_paddr, guest_paddr + npages * vm->page_size); | |
594 | if (region != NULL) | |
595 | TEST_ASSERT(false, "overlapping userspace_mem_region already " | |
596 | "exists\n" | |
597 | " requested guest_paddr: 0x%lx npages: 0x%lx " | |
598 | "page_size: 0x%x\n" | |
599 | " existing guest_paddr: 0x%lx size: 0x%lx", | |
600 | guest_paddr, npages, vm->page_size, | |
601 | (uint64_t) region->region.guest_phys_addr, | |
602 | (uint64_t) region->region.memory_size); | |
603 | ||
604 | /* Confirm no region with the requested slot already exists. */ | |
605 | for (region = vm->userspace_mem_region_head; region; | |
606 | region = region->next) { | |
607 | if (region->region.slot == slot) | |
608 | break; | |
609 | if ((guest_paddr <= (region->region.guest_phys_addr | |
610 | + region->region.memory_size)) | |
611 | && ((guest_paddr + npages * vm->page_size) | |
612 | >= region->region.guest_phys_addr)) | |
613 | break; | |
614 | } | |
615 | if (region != NULL) | |
616 | TEST_ASSERT(false, "A mem region with the requested slot " | |
617 | "or overlapping physical memory range already exists.\n" | |
618 | " requested slot: %u paddr: 0x%lx npages: 0x%lx\n" | |
619 | " existing slot: %u paddr: 0x%lx size: 0x%lx", | |
620 | slot, guest_paddr, npages, | |
621 | region->region.slot, | |
622 | (uint64_t) region->region.guest_phys_addr, | |
623 | (uint64_t) region->region.memory_size); | |
624 | ||
625 | /* Allocate and initialize new mem region structure. */ | |
626 | region = calloc(1, sizeof(*region)); | |
627 | TEST_ASSERT(region != NULL, "Insufficient Memory"); | |
628 | region->mmap_size = npages * vm->page_size; | |
629 | ||
630 | /* Enough memory to align up to a huge page. */ | |
631 | if (src_type == VM_MEM_SRC_ANONYMOUS_THP) | |
632 | region->mmap_size += huge_page_size; | |
633 | region->mmap_start = mmap(NULL, region->mmap_size, | |
634 | PROT_READ | PROT_WRITE, | |
635 | MAP_PRIVATE | MAP_ANONYMOUS | |
636 | | (src_type == VM_MEM_SRC_ANONYMOUS_HUGETLB ? MAP_HUGETLB : 0), | |
637 | -1, 0); | |
638 | TEST_ASSERT(region->mmap_start != MAP_FAILED, | |
639 | "test_malloc failed, mmap_start: %p errno: %i", | |
640 | region->mmap_start, errno); | |
641 | ||
642 | /* Align THP allocation up to start of a huge page. */ | |
643 | region->host_mem = align(region->mmap_start, | |
644 | src_type == VM_MEM_SRC_ANONYMOUS_THP ? huge_page_size : 1); | |
645 | ||
646 | /* As needed perform madvise */ | |
647 | if (src_type == VM_MEM_SRC_ANONYMOUS || src_type == VM_MEM_SRC_ANONYMOUS_THP) { | |
648 | ret = madvise(region->host_mem, npages * vm->page_size, | |
649 | src_type == VM_MEM_SRC_ANONYMOUS ? MADV_NOHUGEPAGE : MADV_HUGEPAGE); | |
650 | TEST_ASSERT(ret == 0, "madvise failed,\n" | |
651 | " addr: %p\n" | |
652 | " length: 0x%lx\n" | |
653 | " src_type: %x", | |
654 | region->host_mem, npages * vm->page_size, src_type); | |
655 | } | |
656 | ||
657 | region->unused_phy_pages = sparsebit_alloc(); | |
658 | sparsebit_set_num(region->unused_phy_pages, | |
659 | guest_paddr >> vm->page_shift, npages); | |
660 | region->region.slot = slot; | |
661 | region->region.flags = flags; | |
662 | region->region.guest_phys_addr = guest_paddr; | |
663 | region->region.memory_size = npages * vm->page_size; | |
664 | region->region.userspace_addr = (uintptr_t) region->host_mem; | |
665 | ret = ioctl(vm->fd, KVM_SET_USER_MEMORY_REGION, ®ion->region); | |
666 | TEST_ASSERT(ret == 0, "KVM_SET_USER_MEMORY_REGION IOCTL failed,\n" | |
667 | " rc: %i errno: %i\n" | |
668 | " slot: %u flags: 0x%x\n" | |
669 | " guest_phys_addr: 0x%lx size: 0x%lx", | |
670 | ret, errno, slot, flags, | |
671 | guest_paddr, (uint64_t) region->region.memory_size); | |
672 | ||
673 | /* Add to linked-list of memory regions. */ | |
674 | if (vm->userspace_mem_region_head) | |
675 | vm->userspace_mem_region_head->prev = region; | |
676 | region->next = vm->userspace_mem_region_head; | |
677 | vm->userspace_mem_region_head = region; | |
678 | } | |
679 | ||
680 | /* Memslot to region | |
681 | * | |
682 | * Input Args: | |
683 | * vm - Virtual Machine | |
684 | * memslot - KVM memory slot ID | |
685 | * | |
686 | * Output Args: None | |
687 | * | |
688 | * Return: | |
689 | * Pointer to memory region structure that describe memory region | |
690 | * using kvm memory slot ID given by memslot. TEST_ASSERT failure | |
691 | * on error (e.g. currently no memory region using memslot as a KVM | |
692 | * memory slot ID). | |
693 | */ | |
694 | static struct userspace_mem_region *memslot2region(struct kvm_vm *vm, | |
695 | uint32_t memslot) | |
696 | { | |
697 | struct userspace_mem_region *region; | |
698 | ||
699 | for (region = vm->userspace_mem_region_head; region; | |
700 | region = region->next) { | |
701 | if (region->region.slot == memslot) | |
702 | break; | |
703 | } | |
704 | if (region == NULL) { | |
705 | fprintf(stderr, "No mem region with the requested slot found,\n" | |
706 | " requested slot: %u\n", memslot); | |
707 | fputs("---- vm dump ----\n", stderr); | |
708 | vm_dump(stderr, vm, 2); | |
709 | TEST_ASSERT(false, "Mem region not found"); | |
710 | } | |
711 | ||
712 | return region; | |
713 | } | |
714 | ||
715 | /* VM Memory Region Flags Set | |
716 | * | |
717 | * Input Args: | |
718 | * vm - Virtual Machine | |
719 | * flags - Starting guest physical address | |
720 | * | |
721 | * Output Args: None | |
722 | * | |
723 | * Return: None | |
724 | * | |
725 | * Sets the flags of the memory region specified by the value of slot, | |
726 | * to the values given by flags. | |
727 | */ | |
728 | void vm_mem_region_set_flags(struct kvm_vm *vm, uint32_t slot, uint32_t flags) | |
729 | { | |
730 | int ret; | |
731 | struct userspace_mem_region *region; | |
732 | ||
733 | /* Locate memory region. */ | |
734 | region = memslot2region(vm, slot); | |
735 | ||
736 | region->region.flags = flags; | |
737 | ||
738 | ret = ioctl(vm->fd, KVM_SET_USER_MEMORY_REGION, ®ion->region); | |
739 | ||
740 | TEST_ASSERT(ret == 0, "KVM_SET_USER_MEMORY_REGION IOCTL failed,\n" | |
741 | " rc: %i errno: %i slot: %u flags: 0x%x", | |
742 | ret, errno, slot, flags); | |
743 | } | |
744 | ||
745 | /* VCPU mmap Size | |
746 | * | |
747 | * Input Args: None | |
748 | * | |
749 | * Output Args: None | |
750 | * | |
751 | * Return: | |
752 | * Size of VCPU state | |
753 | * | |
754 | * Returns the size of the structure pointed to by the return value | |
755 | * of vcpu_state(). | |
756 | */ | |
757 | static int vcpu_mmap_sz(void) | |
758 | { | |
759 | int dev_fd, ret; | |
760 | ||
761 | dev_fd = open(KVM_DEV_PATH, O_RDONLY); | |
bcb2b94a PB |
762 | if (dev_fd < 0) |
763 | exit(KSFT_SKIP); | |
783e9e51 PB |
764 | |
765 | ret = ioctl(dev_fd, KVM_GET_VCPU_MMAP_SIZE, NULL); | |
766 | TEST_ASSERT(ret >= sizeof(struct kvm_run), | |
767 | "%s KVM_GET_VCPU_MMAP_SIZE ioctl failed, rc: %i errno: %i", | |
768 | __func__, ret, errno); | |
769 | ||
770 | close(dev_fd); | |
771 | ||
772 | return ret; | |
773 | } | |
774 | ||
775 | /* VM VCPU Add | |
776 | * | |
777 | * Input Args: | |
778 | * vm - Virtual Machine | |
779 | * vcpuid - VCPU ID | |
780 | * | |
781 | * Output Args: None | |
782 | * | |
783 | * Return: None | |
784 | * | |
785 | * Creates and adds to the VM specified by vm and virtual CPU with | |
786 | * the ID given by vcpuid. | |
787 | */ | |
2305339e | 788 | void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, int pgd_memslot, int gdt_memslot) |
783e9e51 PB |
789 | { |
790 | struct vcpu *vcpu; | |
791 | ||
792 | /* Confirm a vcpu with the specified id doesn't already exist. */ | |
793 | vcpu = vcpu_find(vm, vcpuid); | |
794 | if (vcpu != NULL) | |
795 | TEST_ASSERT(false, "vcpu with the specified id " | |
796 | "already exists,\n" | |
797 | " requested vcpuid: %u\n" | |
798 | " existing vcpuid: %u state: %p", | |
799 | vcpuid, vcpu->id, vcpu->state); | |
800 | ||
801 | /* Allocate and initialize new vcpu structure. */ | |
802 | vcpu = calloc(1, sizeof(*vcpu)); | |
803 | TEST_ASSERT(vcpu != NULL, "Insufficient Memory"); | |
804 | vcpu->id = vcpuid; | |
805 | vcpu->fd = ioctl(vm->fd, KVM_CREATE_VCPU, vcpuid); | |
806 | TEST_ASSERT(vcpu->fd >= 0, "KVM_CREATE_VCPU failed, rc: %i errno: %i", | |
807 | vcpu->fd, errno); | |
808 | ||
809 | TEST_ASSERT(vcpu_mmap_sz() >= sizeof(*vcpu->state), "vcpu mmap size " | |
810 | "smaller than expected, vcpu_mmap_sz: %i expected_min: %zi", | |
811 | vcpu_mmap_sz(), sizeof(*vcpu->state)); | |
812 | vcpu->state = (struct kvm_run *) mmap(NULL, sizeof(*vcpu->state), | |
813 | PROT_READ | PROT_WRITE, MAP_SHARED, vcpu->fd, 0); | |
814 | TEST_ASSERT(vcpu->state != MAP_FAILED, "mmap vcpu_state failed, " | |
815 | "vcpu id: %u errno: %i", vcpuid, errno); | |
816 | ||
817 | /* Add to linked-list of VCPUs. */ | |
818 | if (vm->vcpu_head) | |
819 | vm->vcpu_head->prev = vcpu; | |
820 | vcpu->next = vm->vcpu_head; | |
821 | vm->vcpu_head = vcpu; | |
822 | ||
2305339e | 823 | vcpu_setup(vm, vcpuid, pgd_memslot, gdt_memslot); |
783e9e51 PB |
824 | } |
825 | ||
826 | /* VM Virtual Address Unused Gap | |
827 | * | |
828 | * Input Args: | |
829 | * vm - Virtual Machine | |
830 | * sz - Size (bytes) | |
831 | * vaddr_min - Minimum Virtual Address | |
832 | * | |
833 | * Output Args: None | |
834 | * | |
835 | * Return: | |
836 | * Lowest virtual address at or below vaddr_min, with at least | |
837 | * sz unused bytes. TEST_ASSERT failure if no area of at least | |
838 | * size sz is available. | |
839 | * | |
840 | * Within the VM specified by vm, locates the lowest starting virtual | |
841 | * address >= vaddr_min, that has at least sz unallocated bytes. A | |
842 | * TEST_ASSERT failure occurs for invalid input or no area of at least | |
843 | * sz unallocated bytes >= vaddr_min is available. | |
844 | */ | |
845 | static vm_vaddr_t vm_vaddr_unused_gap(struct kvm_vm *vm, size_t sz, | |
846 | vm_vaddr_t vaddr_min) | |
847 | { | |
848 | uint64_t pages = (sz + vm->page_size - 1) >> vm->page_shift; | |
849 | ||
850 | /* Determine lowest permitted virtual page index. */ | |
851 | uint64_t pgidx_start = (vaddr_min + vm->page_size - 1) >> vm->page_shift; | |
852 | if ((pgidx_start * vm->page_size) < vaddr_min) | |
853 | goto no_va_found; | |
854 | ||
855 | /* Loop over section with enough valid virtual page indexes. */ | |
856 | if (!sparsebit_is_set_num(vm->vpages_valid, | |
857 | pgidx_start, pages)) | |
858 | pgidx_start = sparsebit_next_set_num(vm->vpages_valid, | |
859 | pgidx_start, pages); | |
860 | do { | |
861 | /* | |
862 | * Are there enough unused virtual pages available at | |
863 | * the currently proposed starting virtual page index. | |
864 | * If not, adjust proposed starting index to next | |
865 | * possible. | |
866 | */ | |
867 | if (sparsebit_is_clear_num(vm->vpages_mapped, | |
868 | pgidx_start, pages)) | |
869 | goto va_found; | |
870 | pgidx_start = sparsebit_next_clear_num(vm->vpages_mapped, | |
871 | pgidx_start, pages); | |
872 | if (pgidx_start == 0) | |
873 | goto no_va_found; | |
874 | ||
875 | /* | |
876 | * If needed, adjust proposed starting virtual address, | |
877 | * to next range of valid virtual addresses. | |
878 | */ | |
879 | if (!sparsebit_is_set_num(vm->vpages_valid, | |
880 | pgidx_start, pages)) { | |
881 | pgidx_start = sparsebit_next_set_num( | |
882 | vm->vpages_valid, pgidx_start, pages); | |
883 | if (pgidx_start == 0) | |
884 | goto no_va_found; | |
885 | } | |
886 | } while (pgidx_start != 0); | |
887 | ||
888 | no_va_found: | |
889 | TEST_ASSERT(false, "No vaddr of specified pages available, " | |
890 | "pages: 0x%lx", pages); | |
891 | ||
892 | /* NOT REACHED */ | |
893 | return -1; | |
894 | ||
895 | va_found: | |
896 | TEST_ASSERT(sparsebit_is_set_num(vm->vpages_valid, | |
897 | pgidx_start, pages), | |
898 | "Unexpected, invalid virtual page index range,\n" | |
899 | " pgidx_start: 0x%lx\n" | |
900 | " pages: 0x%lx", | |
901 | pgidx_start, pages); | |
902 | TEST_ASSERT(sparsebit_is_clear_num(vm->vpages_mapped, | |
903 | pgidx_start, pages), | |
904 | "Unexpected, pages already mapped,\n" | |
905 | " pgidx_start: 0x%lx\n" | |
906 | " pages: 0x%lx", | |
907 | pgidx_start, pages); | |
908 | ||
909 | return pgidx_start * vm->page_size; | |
910 | } | |
911 | ||
912 | /* VM Virtual Address Allocate | |
913 | * | |
914 | * Input Args: | |
915 | * vm - Virtual Machine | |
916 | * sz - Size in bytes | |
917 | * vaddr_min - Minimum starting virtual address | |
918 | * data_memslot - Memory region slot for data pages | |
919 | * pgd_memslot - Memory region slot for new virtual translation tables | |
920 | * | |
921 | * Output Args: None | |
922 | * | |
923 | * Return: | |
924 | * Starting guest virtual address | |
925 | * | |
926 | * Allocates at least sz bytes within the virtual address space of the vm | |
927 | * given by vm. The allocated bytes are mapped to a virtual address >= | |
928 | * the address given by vaddr_min. Note that each allocation uses a | |
929 | * a unique set of pages, with the minimum real allocation being at least | |
930 | * a page. | |
931 | */ | |
932 | vm_vaddr_t vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min, | |
933 | uint32_t data_memslot, uint32_t pgd_memslot) | |
934 | { | |
935 | uint64_t pages = (sz >> vm->page_shift) + ((sz % vm->page_size) != 0); | |
936 | ||
937 | virt_pgd_alloc(vm, pgd_memslot); | |
938 | ||
939 | /* Find an unused range of virtual page addresses of at least | |
940 | * pages in length. | |
941 | */ | |
942 | vm_vaddr_t vaddr_start = vm_vaddr_unused_gap(vm, sz, vaddr_min); | |
943 | ||
944 | /* Map the virtual pages. */ | |
945 | for (vm_vaddr_t vaddr = vaddr_start; pages > 0; | |
946 | pages--, vaddr += vm->page_size) { | |
947 | vm_paddr_t paddr; | |
948 | ||
949 | paddr = vm_phy_page_alloc(vm, KVM_UTIL_MIN_PADDR, data_memslot); | |
950 | ||
951 | virt_pg_map(vm, vaddr, paddr, pgd_memslot); | |
952 | ||
953 | sparsebit_set(vm->vpages_mapped, | |
954 | vaddr >> vm->page_shift); | |
955 | } | |
956 | ||
957 | return vaddr_start; | |
958 | } | |
959 | ||
3b4cd0ff PX |
960 | /* |
961 | * Map a range of VM virtual address to the VM's physical address | |
962 | * | |
963 | * Input Args: | |
964 | * vm - Virtual Machine | |
965 | * vaddr - Virtuall address to map | |
966 | * paddr - VM Physical Address | |
967 | * size - The size of the range to map | |
968 | * pgd_memslot - Memory region slot for new virtual translation tables | |
969 | * | |
970 | * Output Args: None | |
971 | * | |
972 | * Return: None | |
973 | * | |
974 | * Within the VM given by vm, creates a virtual translation for the | |
975 | * page range starting at vaddr to the page range starting at paddr. | |
976 | */ | |
977 | void virt_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr, | |
978 | size_t size, uint32_t pgd_memslot) | |
979 | { | |
980 | size_t page_size = vm->page_size; | |
981 | size_t npages = size / page_size; | |
982 | ||
983 | TEST_ASSERT(vaddr + size > vaddr, "Vaddr overflow"); | |
984 | TEST_ASSERT(paddr + size > paddr, "Paddr overflow"); | |
985 | ||
986 | while (npages--) { | |
987 | virt_pg_map(vm, vaddr, paddr, pgd_memslot); | |
988 | vaddr += page_size; | |
989 | paddr += page_size; | |
990 | } | |
991 | } | |
992 | ||
783e9e51 PB |
993 | /* Address VM Physical to Host Virtual |
994 | * | |
995 | * Input Args: | |
996 | * vm - Virtual Machine | |
997 | * gpa - VM physical address | |
998 | * | |
999 | * Output Args: None | |
1000 | * | |
1001 | * Return: | |
1002 | * Equivalent host virtual address | |
1003 | * | |
1004 | * Locates the memory region containing the VM physical address given | |
1005 | * by gpa, within the VM given by vm. When found, the host virtual | |
1006 | * address providing the memory to the vm physical address is returned. | |
1007 | * A TEST_ASSERT failure occurs if no region containing gpa exists. | |
1008 | */ | |
1009 | void *addr_gpa2hva(struct kvm_vm *vm, vm_paddr_t gpa) | |
1010 | { | |
1011 | struct userspace_mem_region *region; | |
1012 | for (region = vm->userspace_mem_region_head; region; | |
1013 | region = region->next) { | |
1014 | if ((gpa >= region->region.guest_phys_addr) | |
1015 | && (gpa <= (region->region.guest_phys_addr | |
1016 | + region->region.memory_size - 1))) | |
1017 | return (void *) ((uintptr_t) region->host_mem | |
1018 | + (gpa - region->region.guest_phys_addr)); | |
1019 | } | |
1020 | ||
1021 | TEST_ASSERT(false, "No vm physical memory at 0x%lx", gpa); | |
1022 | return NULL; | |
1023 | } | |
1024 | ||
1025 | /* Address Host Virtual to VM Physical | |
1026 | * | |
1027 | * Input Args: | |
1028 | * vm - Virtual Machine | |
1029 | * hva - Host virtual address | |
1030 | * | |
1031 | * Output Args: None | |
1032 | * | |
1033 | * Return: | |
1034 | * Equivalent VM physical address | |
1035 | * | |
1036 | * Locates the memory region containing the host virtual address given | |
1037 | * by hva, within the VM given by vm. When found, the equivalent | |
1038 | * VM physical address is returned. A TEST_ASSERT failure occurs if no | |
1039 | * region containing hva exists. | |
1040 | */ | |
1041 | vm_paddr_t addr_hva2gpa(struct kvm_vm *vm, void *hva) | |
1042 | { | |
1043 | struct userspace_mem_region *region; | |
1044 | for (region = vm->userspace_mem_region_head; region; | |
1045 | region = region->next) { | |
1046 | if ((hva >= region->host_mem) | |
1047 | && (hva <= (region->host_mem | |
1048 | + region->region.memory_size - 1))) | |
1049 | return (vm_paddr_t) ((uintptr_t) | |
1050 | region->region.guest_phys_addr | |
1051 | + (hva - (uintptr_t) region->host_mem)); | |
1052 | } | |
1053 | ||
1054 | TEST_ASSERT(false, "No mapping to a guest physical address, " | |
1055 | "hva: %p", hva); | |
1056 | return -1; | |
1057 | } | |
1058 | ||
1059 | /* VM Create IRQ Chip | |
1060 | * | |
1061 | * Input Args: | |
1062 | * vm - Virtual Machine | |
1063 | * | |
1064 | * Output Args: None | |
1065 | * | |
1066 | * Return: None | |
1067 | * | |
1068 | * Creates an interrupt controller chip for the VM specified by vm. | |
1069 | */ | |
1070 | void vm_create_irqchip(struct kvm_vm *vm) | |
1071 | { | |
1072 | int ret; | |
1073 | ||
1074 | ret = ioctl(vm->fd, KVM_CREATE_IRQCHIP, 0); | |
1075 | TEST_ASSERT(ret == 0, "KVM_CREATE_IRQCHIP IOCTL failed, " | |
1076 | "rc: %i errno: %i", ret, errno); | |
fa3899ad PB |
1077 | |
1078 | vm->has_irqchip = true; | |
783e9e51 PB |
1079 | } |
1080 | ||
1081 | /* VM VCPU State | |
1082 | * | |
1083 | * Input Args: | |
1084 | * vm - Virtual Machine | |
1085 | * vcpuid - VCPU ID | |
1086 | * | |
1087 | * Output Args: None | |
1088 | * | |
1089 | * Return: | |
1090 | * Pointer to structure that describes the state of the VCPU. | |
1091 | * | |
1092 | * Locates and returns a pointer to a structure that describes the | |
1093 | * state of the VCPU with the given vcpuid. | |
1094 | */ | |
1095 | struct kvm_run *vcpu_state(struct kvm_vm *vm, uint32_t vcpuid) | |
1096 | { | |
1097 | struct vcpu *vcpu = vcpu_find(vm, vcpuid); | |
1098 | TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); | |
1099 | ||
1100 | return vcpu->state; | |
1101 | } | |
1102 | ||
1103 | /* VM VCPU Run | |
1104 | * | |
1105 | * Input Args: | |
1106 | * vm - Virtual Machine | |
1107 | * vcpuid - VCPU ID | |
1108 | * | |
1109 | * Output Args: None | |
1110 | * | |
1111 | * Return: None | |
1112 | * | |
1113 | * Switch to executing the code for the VCPU given by vcpuid, within the VM | |
1114 | * given by vm. | |
1115 | */ | |
1116 | void vcpu_run(struct kvm_vm *vm, uint32_t vcpuid) | |
1117 | { | |
1118 | int ret = _vcpu_run(vm, vcpuid); | |
1119 | TEST_ASSERT(ret == 0, "KVM_RUN IOCTL failed, " | |
1120 | "rc: %i errno: %i", ret, errno); | |
1121 | } | |
1122 | ||
1123 | int _vcpu_run(struct kvm_vm *vm, uint32_t vcpuid) | |
1124 | { | |
1125 | struct vcpu *vcpu = vcpu_find(vm, vcpuid); | |
1126 | int rc; | |
1127 | ||
1128 | TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); | |
1129 | do { | |
1130 | rc = ioctl(vcpu->fd, KVM_RUN, NULL); | |
1131 | } while (rc == -1 && errno == EINTR); | |
1132 | return rc; | |
1133 | } | |
1134 | ||
1135 | /* VM VCPU Set MP State | |
1136 | * | |
1137 | * Input Args: | |
1138 | * vm - Virtual Machine | |
1139 | * vcpuid - VCPU ID | |
1140 | * mp_state - mp_state to be set | |
1141 | * | |
1142 | * Output Args: None | |
1143 | * | |
1144 | * Return: None | |
1145 | * | |
1146 | * Sets the MP state of the VCPU given by vcpuid, to the state given | |
1147 | * by mp_state. | |
1148 | */ | |
1149 | void vcpu_set_mp_state(struct kvm_vm *vm, uint32_t vcpuid, | |
1150 | struct kvm_mp_state *mp_state) | |
1151 | { | |
1152 | struct vcpu *vcpu = vcpu_find(vm, vcpuid); | |
1153 | int ret; | |
1154 | ||
1155 | TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); | |
1156 | ||
1157 | ret = ioctl(vcpu->fd, KVM_SET_MP_STATE, mp_state); | |
1158 | TEST_ASSERT(ret == 0, "KVM_SET_MP_STATE IOCTL failed, " | |
1159 | "rc: %i errno: %i", ret, errno); | |
1160 | } | |
1161 | ||
1162 | /* VM VCPU Regs Get | |
1163 | * | |
1164 | * Input Args: | |
1165 | * vm - Virtual Machine | |
1166 | * vcpuid - VCPU ID | |
1167 | * | |
1168 | * Output Args: | |
1169 | * regs - current state of VCPU regs | |
1170 | * | |
1171 | * Return: None | |
1172 | * | |
1173 | * Obtains the current register state for the VCPU specified by vcpuid | |
1174 | * and stores it at the location given by regs. | |
1175 | */ | |
1176 | void vcpu_regs_get(struct kvm_vm *vm, | |
1177 | uint32_t vcpuid, struct kvm_regs *regs) | |
1178 | { | |
1179 | struct vcpu *vcpu = vcpu_find(vm, vcpuid); | |
1180 | int ret; | |
1181 | ||
1182 | TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); | |
1183 | ||
1184 | /* Get the regs. */ | |
1185 | ret = ioctl(vcpu->fd, KVM_GET_REGS, regs); | |
1186 | TEST_ASSERT(ret == 0, "KVM_GET_REGS failed, rc: %i errno: %i", | |
1187 | ret, errno); | |
1188 | } | |
1189 | ||
1190 | /* VM VCPU Regs Set | |
1191 | * | |
1192 | * Input Args: | |
1193 | * vm - Virtual Machine | |
1194 | * vcpuid - VCPU ID | |
1195 | * regs - Values to set VCPU regs to | |
1196 | * | |
1197 | * Output Args: None | |
1198 | * | |
1199 | * Return: None | |
1200 | * | |
1201 | * Sets the regs of the VCPU specified by vcpuid to the values | |
1202 | * given by regs. | |
1203 | */ | |
1204 | void vcpu_regs_set(struct kvm_vm *vm, | |
1205 | uint32_t vcpuid, struct kvm_regs *regs) | |
1206 | { | |
1207 | struct vcpu *vcpu = vcpu_find(vm, vcpuid); | |
1208 | int ret; | |
1209 | ||
1210 | TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); | |
1211 | ||
1212 | /* Set the regs. */ | |
1213 | ret = ioctl(vcpu->fd, KVM_SET_REGS, regs); | |
1214 | TEST_ASSERT(ret == 0, "KVM_SET_REGS failed, rc: %i errno: %i", | |
1215 | ret, errno); | |
1216 | } | |
1217 | ||
1218 | void vcpu_events_get(struct kvm_vm *vm, uint32_t vcpuid, | |
1219 | struct kvm_vcpu_events *events) | |
1220 | { | |
1221 | struct vcpu *vcpu = vcpu_find(vm, vcpuid); | |
1222 | int ret; | |
1223 | ||
1224 | TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); | |
1225 | ||
1226 | /* Get the regs. */ | |
1227 | ret = ioctl(vcpu->fd, KVM_GET_VCPU_EVENTS, events); | |
1228 | TEST_ASSERT(ret == 0, "KVM_GET_VCPU_EVENTS, failed, rc: %i errno: %i", | |
1229 | ret, errno); | |
1230 | } | |
1231 | ||
1232 | void vcpu_events_set(struct kvm_vm *vm, uint32_t vcpuid, | |
1233 | struct kvm_vcpu_events *events) | |
1234 | { | |
1235 | struct vcpu *vcpu = vcpu_find(vm, vcpuid); | |
1236 | int ret; | |
1237 | ||
1238 | TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); | |
1239 | ||
1240 | /* Set the regs. */ | |
1241 | ret = ioctl(vcpu->fd, KVM_SET_VCPU_EVENTS, events); | |
1242 | TEST_ASSERT(ret == 0, "KVM_SET_VCPU_EVENTS, failed, rc: %i errno: %i", | |
1243 | ret, errno); | |
1244 | } | |
1245 | ||
8b56ee91 DS |
1246 | /* VCPU Get MSR |
1247 | * | |
1248 | * Input Args: | |
1249 | * vm - Virtual Machine | |
1250 | * vcpuid - VCPU ID | |
1251 | * msr_index - Index of MSR | |
1252 | * | |
1253 | * Output Args: None | |
1254 | * | |
1255 | * Return: On success, value of the MSR. On failure a TEST_ASSERT is produced. | |
1256 | * | |
1257 | * Get value of MSR for VCPU. | |
1258 | */ | |
1259 | uint64_t vcpu_get_msr(struct kvm_vm *vm, uint32_t vcpuid, uint64_t msr_index) | |
1260 | { | |
1261 | struct vcpu *vcpu = vcpu_find(vm, vcpuid); | |
1262 | struct { | |
1263 | struct kvm_msrs header; | |
1264 | struct kvm_msr_entry entry; | |
1265 | } buffer = {}; | |
1266 | int r; | |
1267 | ||
1268 | TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); | |
1269 | buffer.header.nmsrs = 1; | |
1270 | buffer.entry.index = msr_index; | |
1271 | r = ioctl(vcpu->fd, KVM_GET_MSRS, &buffer.header); | |
1272 | TEST_ASSERT(r == 1, "KVM_GET_MSRS IOCTL failed,\n" | |
1273 | " rc: %i errno: %i", r, errno); | |
1274 | ||
1275 | return buffer.entry.data; | |
1276 | } | |
1277 | ||
1278 | /* VCPU Set MSR | |
1279 | * | |
1280 | * Input Args: | |
1281 | * vm - Virtual Machine | |
1282 | * vcpuid - VCPU ID | |
1283 | * msr_index - Index of MSR | |
1284 | * msr_value - New value of MSR | |
1285 | * | |
1286 | * Output Args: None | |
1287 | * | |
1288 | * Return: On success, nothing. On failure a TEST_ASSERT is produced. | |
1289 | * | |
1290 | * Set value of MSR for VCPU. | |
1291 | */ | |
1292 | void vcpu_set_msr(struct kvm_vm *vm, uint32_t vcpuid, uint64_t msr_index, | |
1293 | uint64_t msr_value) | |
1294 | { | |
1295 | struct vcpu *vcpu = vcpu_find(vm, vcpuid); | |
1296 | struct { | |
1297 | struct kvm_msrs header; | |
1298 | struct kvm_msr_entry entry; | |
1299 | } buffer = {}; | |
1300 | int r; | |
1301 | ||
1302 | TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); | |
1303 | memset(&buffer, 0, sizeof(buffer)); | |
1304 | buffer.header.nmsrs = 1; | |
1305 | buffer.entry.index = msr_index; | |
1306 | buffer.entry.data = msr_value; | |
1307 | r = ioctl(vcpu->fd, KVM_SET_MSRS, &buffer.header); | |
1308 | TEST_ASSERT(r == 1, "KVM_SET_MSRS IOCTL failed,\n" | |
1309 | " rc: %i errno: %i", r, errno); | |
1310 | } | |
1311 | ||
783e9e51 PB |
1312 | /* VM VCPU Args Set |
1313 | * | |
1314 | * Input Args: | |
1315 | * vm - Virtual Machine | |
1316 | * vcpuid - VCPU ID | |
1317 | * num - number of arguments | |
1318 | * ... - arguments, each of type uint64_t | |
1319 | * | |
1320 | * Output Args: None | |
1321 | * | |
1322 | * Return: None | |
1323 | * | |
1324 | * Sets the first num function input arguments to the values | |
1325 | * given as variable args. Each of the variable args is expected to | |
1326 | * be of type uint64_t. | |
1327 | */ | |
1328 | void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...) | |
1329 | { | |
1330 | va_list ap; | |
1331 | struct kvm_regs regs; | |
1332 | ||
1333 | TEST_ASSERT(num >= 1 && num <= 6, "Unsupported number of args,\n" | |
1334 | " num: %u\n", | |
1335 | num); | |
1336 | ||
1337 | va_start(ap, num); | |
1338 | vcpu_regs_get(vm, vcpuid, ®s); | |
1339 | ||
1340 | if (num >= 1) | |
1341 | regs.rdi = va_arg(ap, uint64_t); | |
1342 | ||
1343 | if (num >= 2) | |
1344 | regs.rsi = va_arg(ap, uint64_t); | |
1345 | ||
1346 | if (num >= 3) | |
1347 | regs.rdx = va_arg(ap, uint64_t); | |
1348 | ||
1349 | if (num >= 4) | |
1350 | regs.rcx = va_arg(ap, uint64_t); | |
1351 | ||
1352 | if (num >= 5) | |
1353 | regs.r8 = va_arg(ap, uint64_t); | |
1354 | ||
1355 | if (num >= 6) | |
1356 | regs.r9 = va_arg(ap, uint64_t); | |
1357 | ||
1358 | vcpu_regs_set(vm, vcpuid, ®s); | |
1359 | va_end(ap); | |
1360 | } | |
1361 | ||
1362 | /* VM VCPU System Regs Get | |
1363 | * | |
1364 | * Input Args: | |
1365 | * vm - Virtual Machine | |
1366 | * vcpuid - VCPU ID | |
1367 | * | |
1368 | * Output Args: | |
1369 | * sregs - current state of VCPU system regs | |
1370 | * | |
1371 | * Return: None | |
1372 | * | |
1373 | * Obtains the current system register state for the VCPU specified by | |
1374 | * vcpuid and stores it at the location given by sregs. | |
1375 | */ | |
1376 | void vcpu_sregs_get(struct kvm_vm *vm, | |
1377 | uint32_t vcpuid, struct kvm_sregs *sregs) | |
1378 | { | |
1379 | struct vcpu *vcpu = vcpu_find(vm, vcpuid); | |
1380 | int ret; | |
1381 | ||
1382 | TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); | |
1383 | ||
1384 | /* Get the regs. */ | |
1385 | /* Get the regs. */ | |
1386 | ret = ioctl(vcpu->fd, KVM_GET_SREGS, sregs); | |
1387 | TEST_ASSERT(ret == 0, "KVM_GET_SREGS failed, rc: %i errno: %i", | |
1388 | ret, errno); | |
1389 | } | |
1390 | ||
1391 | /* VM VCPU System Regs Set | |
1392 | * | |
1393 | * Input Args: | |
1394 | * vm - Virtual Machine | |
1395 | * vcpuid - VCPU ID | |
1396 | * sregs - Values to set VCPU system regs to | |
1397 | * | |
1398 | * Output Args: None | |
1399 | * | |
1400 | * Return: None | |
1401 | * | |
1402 | * Sets the system regs of the VCPU specified by vcpuid to the values | |
1403 | * given by sregs. | |
1404 | */ | |
1405 | void vcpu_sregs_set(struct kvm_vm *vm, | |
1406 | uint32_t vcpuid, struct kvm_sregs *sregs) | |
1407 | { | |
1408 | int ret = _vcpu_sregs_set(vm, vcpuid, sregs); | |
1409 | TEST_ASSERT(ret == 0, "KVM_RUN IOCTL failed, " | |
1410 | "rc: %i errno: %i", ret, errno); | |
1411 | } | |
1412 | ||
1413 | int _vcpu_sregs_set(struct kvm_vm *vm, | |
1414 | uint32_t vcpuid, struct kvm_sregs *sregs) | |
1415 | { | |
1416 | struct vcpu *vcpu = vcpu_find(vm, vcpuid); | |
1417 | int ret; | |
1418 | ||
1419 | TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); | |
1420 | ||
1421 | /* Get the regs. */ | |
1422 | return ioctl(vcpu->fd, KVM_SET_SREGS, sregs); | |
1423 | } | |
1424 | ||
1425 | /* VCPU Ioctl | |
1426 | * | |
1427 | * Input Args: | |
1428 | * vm - Virtual Machine | |
1429 | * vcpuid - VCPU ID | |
1430 | * cmd - Ioctl number | |
1431 | * arg - Argument to pass to the ioctl | |
1432 | * | |
1433 | * Return: None | |
1434 | * | |
1435 | * Issues an arbitrary ioctl on a VCPU fd. | |
1436 | */ | |
1437 | void vcpu_ioctl(struct kvm_vm *vm, | |
1438 | uint32_t vcpuid, unsigned long cmd, void *arg) | |
1439 | { | |
1440 | struct vcpu *vcpu = vcpu_find(vm, vcpuid); | |
1441 | int ret; | |
1442 | ||
1443 | TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); | |
1444 | ||
1445 | ret = ioctl(vcpu->fd, cmd, arg); | |
1446 | TEST_ASSERT(ret == 0, "vcpu ioctl %lu failed, rc: %i errno: %i (%s)", | |
1447 | cmd, ret, errno, strerror(errno)); | |
1448 | } | |
1449 | ||
1450 | /* VM Ioctl | |
1451 | * | |
1452 | * Input Args: | |
1453 | * vm - Virtual Machine | |
1454 | * cmd - Ioctl number | |
1455 | * arg - Argument to pass to the ioctl | |
1456 | * | |
1457 | * Return: None | |
1458 | * | |
1459 | * Issues an arbitrary ioctl on a VM fd. | |
1460 | */ | |
1461 | void vm_ioctl(struct kvm_vm *vm, unsigned long cmd, void *arg) | |
1462 | { | |
1463 | int ret; | |
1464 | ||
1465 | ret = ioctl(vm->fd, cmd, arg); | |
1466 | TEST_ASSERT(ret == 0, "vm ioctl %lu failed, rc: %i errno: %i (%s)", | |
1467 | cmd, ret, errno, strerror(errno)); | |
1468 | } | |
1469 | ||
1470 | /* VM Dump | |
1471 | * | |
1472 | * Input Args: | |
1473 | * vm - Virtual Machine | |
1474 | * indent - Left margin indent amount | |
1475 | * | |
1476 | * Output Args: | |
1477 | * stream - Output FILE stream | |
1478 | * | |
1479 | * Return: None | |
1480 | * | |
1481 | * Dumps the current state of the VM given by vm, to the FILE stream | |
1482 | * given by stream. | |
1483 | */ | |
1484 | void vm_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent) | |
1485 | { | |
1486 | struct userspace_mem_region *region; | |
1487 | struct vcpu *vcpu; | |
1488 | ||
1489 | fprintf(stream, "%*smode: 0x%x\n", indent, "", vm->mode); | |
1490 | fprintf(stream, "%*sfd: %i\n", indent, "", vm->fd); | |
1491 | fprintf(stream, "%*spage_size: 0x%x\n", indent, "", vm->page_size); | |
1492 | fprintf(stream, "%*sMem Regions:\n", indent, ""); | |
1493 | for (region = vm->userspace_mem_region_head; region; | |
1494 | region = region->next) { | |
1495 | fprintf(stream, "%*sguest_phys: 0x%lx size: 0x%lx " | |
1496 | "host_virt: %p\n", indent + 2, "", | |
1497 | (uint64_t) region->region.guest_phys_addr, | |
1498 | (uint64_t) region->region.memory_size, | |
1499 | region->host_mem); | |
1500 | fprintf(stream, "%*sunused_phy_pages: ", indent + 2, ""); | |
1501 | sparsebit_dump(stream, region->unused_phy_pages, 0); | |
1502 | } | |
1503 | fprintf(stream, "%*sMapped Virtual Pages:\n", indent, ""); | |
1504 | sparsebit_dump(stream, vm->vpages_mapped, indent + 2); | |
1505 | fprintf(stream, "%*spgd_created: %u\n", indent, "", | |
1506 | vm->pgd_created); | |
1507 | if (vm->pgd_created) { | |
1508 | fprintf(stream, "%*sVirtual Translation Tables:\n", | |
1509 | indent + 2, ""); | |
1510 | virt_dump(stream, vm, indent + 4); | |
1511 | } | |
1512 | fprintf(stream, "%*sVCPUs:\n", indent, ""); | |
1513 | for (vcpu = vm->vcpu_head; vcpu; vcpu = vcpu->next) | |
1514 | vcpu_dump(stream, vm, vcpu->id, indent + 2); | |
1515 | } | |
1516 | ||
1517 | /* VM VCPU Dump | |
1518 | * | |
1519 | * Input Args: | |
1520 | * vm - Virtual Machine | |
1521 | * vcpuid - VCPU ID | |
1522 | * indent - Left margin indent amount | |
1523 | * | |
1524 | * Output Args: | |
1525 | * stream - Output FILE stream | |
1526 | * | |
1527 | * Return: None | |
1528 | * | |
1529 | * Dumps the current state of the VCPU specified by vcpuid, within the VM | |
1530 | * given by vm, to the FILE stream given by stream. | |
1531 | */ | |
1532 | void vcpu_dump(FILE *stream, struct kvm_vm *vm, | |
1533 | uint32_t vcpuid, uint8_t indent) | |
1534 | { | |
1535 | struct kvm_regs regs; | |
1536 | struct kvm_sregs sregs; | |
1537 | ||
1538 | fprintf(stream, "%*scpuid: %u\n", indent, "", vcpuid); | |
1539 | ||
1540 | fprintf(stream, "%*sregs:\n", indent + 2, ""); | |
1541 | vcpu_regs_get(vm, vcpuid, ®s); | |
1542 | regs_dump(stream, ®s, indent + 4); | |
1543 | ||
1544 | fprintf(stream, "%*ssregs:\n", indent + 2, ""); | |
1545 | vcpu_sregs_get(vm, vcpuid, &sregs); | |
1546 | sregs_dump(stream, &sregs, indent + 4); | |
1547 | } | |
1548 | ||
1549 | /* Known KVM exit reasons */ | |
1550 | static struct exit_reason { | |
1551 | unsigned int reason; | |
1552 | const char *name; | |
1553 | } exit_reasons_known[] = { | |
1554 | {KVM_EXIT_UNKNOWN, "UNKNOWN"}, | |
1555 | {KVM_EXIT_EXCEPTION, "EXCEPTION"}, | |
1556 | {KVM_EXIT_IO, "IO"}, | |
1557 | {KVM_EXIT_HYPERCALL, "HYPERCALL"}, | |
1558 | {KVM_EXIT_DEBUG, "DEBUG"}, | |
1559 | {KVM_EXIT_HLT, "HLT"}, | |
1560 | {KVM_EXIT_MMIO, "MMIO"}, | |
1561 | {KVM_EXIT_IRQ_WINDOW_OPEN, "IRQ_WINDOW_OPEN"}, | |
1562 | {KVM_EXIT_SHUTDOWN, "SHUTDOWN"}, | |
1563 | {KVM_EXIT_FAIL_ENTRY, "FAIL_ENTRY"}, | |
1564 | {KVM_EXIT_INTR, "INTR"}, | |
1565 | {KVM_EXIT_SET_TPR, "SET_TPR"}, | |
1566 | {KVM_EXIT_TPR_ACCESS, "TPR_ACCESS"}, | |
1567 | {KVM_EXIT_S390_SIEIC, "S390_SIEIC"}, | |
1568 | {KVM_EXIT_S390_RESET, "S390_RESET"}, | |
1569 | {KVM_EXIT_DCR, "DCR"}, | |
1570 | {KVM_EXIT_NMI, "NMI"}, | |
1571 | {KVM_EXIT_INTERNAL_ERROR, "INTERNAL_ERROR"}, | |
1572 | {KVM_EXIT_OSI, "OSI"}, | |
1573 | {KVM_EXIT_PAPR_HCALL, "PAPR_HCALL"}, | |
1574 | #ifdef KVM_EXIT_MEMORY_NOT_PRESENT | |
1575 | {KVM_EXIT_MEMORY_NOT_PRESENT, "MEMORY_NOT_PRESENT"}, | |
1576 | #endif | |
1577 | }; | |
1578 | ||
1579 | /* Exit Reason String | |
1580 | * | |
1581 | * Input Args: | |
1582 | * exit_reason - Exit reason | |
1583 | * | |
1584 | * Output Args: None | |
1585 | * | |
1586 | * Return: | |
1587 | * Constant string pointer describing the exit reason. | |
1588 | * | |
1589 | * Locates and returns a constant string that describes the KVM exit | |
1590 | * reason given by exit_reason. If no such string is found, a constant | |
1591 | * string of "Unknown" is returned. | |
1592 | */ | |
1593 | const char *exit_reason_str(unsigned int exit_reason) | |
1594 | { | |
1595 | unsigned int n1; | |
1596 | ||
1597 | for (n1 = 0; n1 < ARRAY_SIZE(exit_reasons_known); n1++) { | |
1598 | if (exit_reason == exit_reasons_known[n1].reason) | |
1599 | return exit_reasons_known[n1].name; | |
1600 | } | |
1601 | ||
1602 | return "Unknown"; | |
1603 | } | |
1604 | ||
1605 | /* Physical Page Allocate | |
1606 | * | |
1607 | * Input Args: | |
1608 | * vm - Virtual Machine | |
1609 | * paddr_min - Physical address minimum | |
1610 | * memslot - Memory region to allocate page from | |
1611 | * | |
1612 | * Output Args: None | |
1613 | * | |
1614 | * Return: | |
1615 | * Starting physical address | |
1616 | * | |
1617 | * Within the VM specified by vm, locates an available physical page | |
1618 | * at or above paddr_min. If found, the page is marked as in use | |
1619 | * and its address is returned. A TEST_ASSERT failure occurs if no | |
1620 | * page is available at or above paddr_min. | |
1621 | */ | |
1622 | vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm, | |
1623 | vm_paddr_t paddr_min, uint32_t memslot) | |
1624 | { | |
1625 | struct userspace_mem_region *region; | |
1626 | sparsebit_idx_t pg; | |
1627 | ||
1628 | TEST_ASSERT((paddr_min % vm->page_size) == 0, "Min physical address " | |
4d5f26ee | 1629 | "not divisible by page size.\n" |
783e9e51 PB |
1630 | " paddr_min: 0x%lx page_size: 0x%x", |
1631 | paddr_min, vm->page_size); | |
1632 | ||
1633 | /* Locate memory region. */ | |
1634 | region = memslot2region(vm, memslot); | |
1635 | ||
1636 | /* Locate next available physical page at or above paddr_min. */ | |
1637 | pg = paddr_min >> vm->page_shift; | |
1638 | ||
1639 | if (!sparsebit_is_set(region->unused_phy_pages, pg)) { | |
1640 | pg = sparsebit_next_set(region->unused_phy_pages, pg); | |
1641 | if (pg == 0) { | |
1642 | fprintf(stderr, "No guest physical page available, " | |
1643 | "paddr_min: 0x%lx page_size: 0x%x memslot: %u", | |
1644 | paddr_min, vm->page_size, memslot); | |
1645 | fputs("---- vm dump ----\n", stderr); | |
1646 | vm_dump(stderr, vm, 2); | |
1647 | abort(); | |
1648 | } | |
1649 | } | |
1650 | ||
1651 | /* Specify page as in use and return its address. */ | |
1652 | sparsebit_clear(region->unused_phy_pages, pg); | |
1653 | ||
1654 | return pg * vm->page_size; | |
1655 | } | |
1656 | ||
1657 | /* Address Guest Virtual to Host Virtual | |
1658 | * | |
1659 | * Input Args: | |
1660 | * vm - Virtual Machine | |
1661 | * gva - VM virtual address | |
1662 | * | |
1663 | * Output Args: None | |
1664 | * | |
1665 | * Return: | |
1666 | * Equivalent host virtual address | |
1667 | */ | |
1668 | void *addr_gva2hva(struct kvm_vm *vm, vm_vaddr_t gva) | |
1669 | { | |
1670 | return addr_gpa2hva(vm, addr_gva2gpa(vm, gva)); | |
1671 | } | |
4e18bccc PX |
1672 | |
1673 | void guest_args_read(struct kvm_vm *vm, uint32_t vcpu_id, | |
1674 | struct guest_args *args) | |
1675 | { | |
1676 | struct kvm_run *run = vcpu_state(vm, vcpu_id); | |
1677 | struct kvm_regs regs; | |
1678 | ||
1679 | memset(®s, 0, sizeof(regs)); | |
1680 | vcpu_regs_get(vm, vcpu_id, ®s); | |
1681 | ||
1682 | args->port = run->io.port; | |
1683 | args->arg0 = regs.rdi; | |
1684 | args->arg1 = regs.rsi; | |
1685 | } |