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xen_shinfo_test.c
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linux-6.19.14/tools/testing/selftests/kvm/x86/xen_shinfo_test.c
1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Copyright © 2021 Amazon.com, Inc. or its affiliates. 4 */ 5 6#include "test_util.h" 7#include "kvm_util.h" 8#include "processor.h" 9 10#include <stdint.h> 11#include <time.h> 12#include <sched.h> 13#include <signal.h> 14#include <pthread.h> 15 16#include <sys/eventfd.h> 17 18#define SHINFO_REGION_GVA 0xc0000000ULL 19#define SHINFO_REGION_GPA 0xc0000000ULL 20#define SHINFO_REGION_SLOT 10 21 22#define DUMMY_REGION_GPA (SHINFO_REGION_GPA + (3 * PAGE_SIZE)) 23#define DUMMY_REGION_SLOT 11 24 25#define DUMMY_REGION_GPA_2 (SHINFO_REGION_GPA + (4 * PAGE_SIZE)) 26#define DUMMY_REGION_SLOT_2 12 27 28#define SHINFO_ADDR (SHINFO_REGION_GPA) 29#define VCPU_INFO_ADDR (SHINFO_REGION_GPA + 0x40) 30#define PVTIME_ADDR (SHINFO_REGION_GPA + PAGE_SIZE) 31#define RUNSTATE_ADDR (SHINFO_REGION_GPA + PAGE_SIZE + PAGE_SIZE - 15) 32 33#define SHINFO_VADDR (SHINFO_REGION_GVA) 34#define VCPU_INFO_VADDR (SHINFO_REGION_GVA + 0x40) 35#define RUNSTATE_VADDR (SHINFO_REGION_GVA + PAGE_SIZE + PAGE_SIZE - 15) 36 37#define EVTCHN_VECTOR 0x10 38 39#define EVTCHN_TEST1 15 40#define EVTCHN_TEST2 66 41#define EVTCHN_TIMER 13 42 43enum { 44 TEST_INJECT_VECTOR = 0, 45 TEST_RUNSTATE_runnable, 46 TEST_RUNSTATE_blocked, 47 TEST_RUNSTATE_offline, 48 TEST_RUNSTATE_ADJUST, 49 TEST_RUNSTATE_DATA, 50 TEST_STEAL_TIME, 51 TEST_EVTCHN_MASKED, 52 TEST_EVTCHN_UNMASKED, 53 TEST_EVTCHN_SLOWPATH, 54 TEST_EVTCHN_SEND_IOCTL, 55 TEST_EVTCHN_HCALL, 56 TEST_EVTCHN_HCALL_SLOWPATH, 57 TEST_EVTCHN_HCALL_EVENTFD, 58 TEST_TIMER_SETUP, 59 TEST_TIMER_WAIT, 60 TEST_TIMER_RESTORE, 61 TEST_POLL_READY, 62 TEST_POLL_TIMEOUT, 63 TEST_POLL_MASKED, 64 TEST_POLL_WAKE, 65 SET_VCPU_INFO, 66 TEST_TIMER_PAST, 67 TEST_LOCKING_SEND_RACE, 68 TEST_LOCKING_POLL_RACE, 69 TEST_LOCKING_POLL_TIMEOUT, 70 TEST_DONE, 71 72 TEST_GUEST_SAW_IRQ, 73}; 74 75#define XEN_HYPERCALL_MSR 0x40000000 76 77#define MIN_STEAL_TIME 50000 78 79#define SHINFO_RACE_TIMEOUT 2 /* seconds */ 80 81#define __HYPERVISOR_set_timer_op 15 82#define __HYPERVISOR_sched_op 29 83#define __HYPERVISOR_event_channel_op 32 84 85#define SCHEDOP_poll 3 86 87#define EVTCHNOP_send 4 88 89#define EVTCHNSTAT_interdomain 2 90 91struct evtchn_send { 92 u32 port; 93}; 94 95struct sched_poll { 96 u32 *ports; 97 unsigned int nr_ports; 98 u64 timeout; 99}; 100 101struct pvclock_vcpu_time_info { 102 u32 version; 103 u32 pad0; 104 u64 tsc_timestamp; 105 u64 system_time; 106 u32 tsc_to_system_mul; 107 s8 tsc_shift; 108 u8 flags; 109 u8 pad[2]; 110} __attribute__((__packed__)); /* 32 bytes */ 111 112struct pvclock_wall_clock { 113 u32 version; 114 u32 sec; 115 u32 nsec; 116} __attribute__((__packed__)); 117 118struct vcpu_runstate_info { 119 uint32_t state; 120 uint64_t state_entry_time; 121 uint64_t time[5]; /* Extra field for overrun check */ 122}; 123 124struct compat_vcpu_runstate_info { 125 uint32_t state; 126 uint64_t state_entry_time; 127 uint64_t time[5]; 128} __attribute__((__packed__)); 129 130struct arch_vcpu_info { 131 unsigned long cr2; 132 unsigned long pad; /* sizeof(vcpu_info_t) == 64 */ 133}; 134 135struct vcpu_info { 136 uint8_t evtchn_upcall_pending; 137 uint8_t evtchn_upcall_mask; 138 unsigned long evtchn_pending_sel; 139 struct arch_vcpu_info arch; 140 struct pvclock_vcpu_time_info time; 141}; /* 64 bytes (x86) */ 142 143struct shared_info { 144 struct vcpu_info vcpu_info[32]; 145 unsigned long evtchn_pending[64]; 146 unsigned long evtchn_mask[64]; 147 struct pvclock_wall_clock wc; 148 uint32_t wc_sec_hi; 149 /* arch_shared_info here */ 150}; 151 152#define RUNSTATE_running 0 153#define RUNSTATE_runnable 1 154#define RUNSTATE_blocked 2 155#define RUNSTATE_offline 3 156 157static const char *runstate_names[] = { 158 "running", 159 "runnable", 160 "blocked", 161 "offline" 162}; 163 164struct { 165 struct kvm_irq_routing info; 166 struct kvm_irq_routing_entry entries[2]; 167} irq_routes; 168 169static volatile bool guest_saw_irq; 170 171static void evtchn_handler(struct ex_regs *regs) 172{ 173 struct vcpu_info *vi = (void *)VCPU_INFO_VADDR; 174 175 vcpu_arch_put_guest(vi->evtchn_upcall_pending, 0); 176 vcpu_arch_put_guest(vi->evtchn_pending_sel, 0); 177 guest_saw_irq = true; 178 179 GUEST_SYNC(TEST_GUEST_SAW_IRQ); 180} 181 182static void guest_wait_for_irq(void) 183{ 184 while (!guest_saw_irq) 185 __asm__ __volatile__ ("rep nop" : : : "memory"); 186 guest_saw_irq = false; 187} 188 189static void guest_code(void) 190{ 191 struct vcpu_runstate_info *rs = (void *)RUNSTATE_VADDR; 192 int i; 193 194 sti_nop(); 195 196 /* Trigger an interrupt injection */ 197 GUEST_SYNC(TEST_INJECT_VECTOR); 198 199 guest_wait_for_irq(); 200 201 /* Test having the host set runstates manually */ 202 GUEST_SYNC(TEST_RUNSTATE_runnable); 203 GUEST_ASSERT(rs->time[RUNSTATE_runnable] != 0); 204 GUEST_ASSERT(rs->state == 0); 205 206 GUEST_SYNC(TEST_RUNSTATE_blocked); 207 GUEST_ASSERT(rs->time[RUNSTATE_blocked] != 0); 208 GUEST_ASSERT(rs->state == 0); 209 210 GUEST_SYNC(TEST_RUNSTATE_offline); 211 GUEST_ASSERT(rs->time[RUNSTATE_offline] != 0); 212 GUEST_ASSERT(rs->state == 0); 213 214 /* Test runstate time adjust */ 215 GUEST_SYNC(TEST_RUNSTATE_ADJUST); 216 GUEST_ASSERT(rs->time[RUNSTATE_blocked] == 0x5a); 217 GUEST_ASSERT(rs->time[RUNSTATE_offline] == 0x6b6b); 218 219 /* Test runstate time set */ 220 GUEST_SYNC(TEST_RUNSTATE_DATA); 221 GUEST_ASSERT(rs->state_entry_time >= 0x8000); 222 GUEST_ASSERT(rs->time[RUNSTATE_runnable] == 0); 223 GUEST_ASSERT(rs->time[RUNSTATE_blocked] == 0x6b6b); 224 GUEST_ASSERT(rs->time[RUNSTATE_offline] == 0x5a); 225 226 /* sched_yield() should result in some 'runnable' time */ 227 GUEST_SYNC(TEST_STEAL_TIME); 228 GUEST_ASSERT(rs->time[RUNSTATE_runnable] >= MIN_STEAL_TIME); 229 230 /* Attempt to deliver a *masked* interrupt */ 231 GUEST_SYNC(TEST_EVTCHN_MASKED); 232 233 /* Wait until we see the bit set */ 234 struct shared_info *si = (void *)SHINFO_VADDR; 235 while (!si->evtchn_pending[0]) 236 __asm__ __volatile__ ("rep nop" : : : "memory"); 237 238 /* Now deliver an *unmasked* interrupt */ 239 GUEST_SYNC(TEST_EVTCHN_UNMASKED); 240 241 guest_wait_for_irq(); 242 243 /* Change memslots and deliver an interrupt */ 244 GUEST_SYNC(TEST_EVTCHN_SLOWPATH); 245 246 guest_wait_for_irq(); 247 248 /* Deliver event channel with KVM_XEN_HVM_EVTCHN_SEND */ 249 GUEST_SYNC(TEST_EVTCHN_SEND_IOCTL); 250 251 guest_wait_for_irq(); 252 253 GUEST_SYNC(TEST_EVTCHN_HCALL); 254 255 /* Our turn. Deliver event channel (to ourselves) with 256 * EVTCHNOP_send hypercall. */ 257 struct evtchn_send s = { .port = 127 }; 258 xen_hypercall(__HYPERVISOR_event_channel_op, EVTCHNOP_send, &s); 259 260 guest_wait_for_irq(); 261 262 GUEST_SYNC(TEST_EVTCHN_HCALL_SLOWPATH); 263 264 /* 265 * Same again, but this time the host has messed with memslots so it 266 * should take the slow path in kvm_xen_set_evtchn(). 267 */ 268 xen_hypercall(__HYPERVISOR_event_channel_op, EVTCHNOP_send, &s); 269 270 guest_wait_for_irq(); 271 272 GUEST_SYNC(TEST_EVTCHN_HCALL_EVENTFD); 273 274 /* Deliver "outbound" event channel to an eventfd which 275 * happens to be one of our own irqfds. */ 276 s.port = 197; 277 xen_hypercall(__HYPERVISOR_event_channel_op, EVTCHNOP_send, &s); 278 279 guest_wait_for_irq(); 280 281 GUEST_SYNC(TEST_TIMER_SETUP); 282 283 /* Set a timer 100ms in the future. */ 284 xen_hypercall(__HYPERVISOR_set_timer_op, 285 rs->state_entry_time + 100000000, NULL); 286 287 GUEST_SYNC(TEST_TIMER_WAIT); 288 289 /* Now wait for the timer */ 290 guest_wait_for_irq(); 291 292 GUEST_SYNC(TEST_TIMER_RESTORE); 293 294 /* The host has 'restored' the timer. Just wait for it. */ 295 guest_wait_for_irq(); 296 297 GUEST_SYNC(TEST_POLL_READY); 298 299 /* Poll for an event channel port which is already set */ 300 u32 ports[1] = { EVTCHN_TIMER }; 301 struct sched_poll p = { 302 .ports = ports, 303 .nr_ports = 1, 304 .timeout = 0, 305 }; 306 307 xen_hypercall(__HYPERVISOR_sched_op, SCHEDOP_poll, &p); 308 309 GUEST_SYNC(TEST_POLL_TIMEOUT); 310 311 /* Poll for an unset port and wait for the timeout. */ 312 p.timeout = 100000000; 313 xen_hypercall(__HYPERVISOR_sched_op, SCHEDOP_poll, &p); 314 315 GUEST_SYNC(TEST_POLL_MASKED); 316 317 /* A timer will wake the masked port we're waiting on, while we poll */ 318 p.timeout = 0; 319 xen_hypercall(__HYPERVISOR_sched_op, SCHEDOP_poll, &p); 320 321 GUEST_SYNC(TEST_POLL_WAKE); 322 323 /* Set the vcpu_info to point at exactly the place it already is to 324 * make sure the attribute is functional. */ 325 GUEST_SYNC(SET_VCPU_INFO); 326 327 /* A timer wake an *unmasked* port which should wake us with an 328 * actual interrupt, while we're polling on a different port. */ 329 ports[0]++; 330 p.timeout = 0; 331 xen_hypercall(__HYPERVISOR_sched_op, SCHEDOP_poll, &p); 332 333 guest_wait_for_irq(); 334 335 GUEST_SYNC(TEST_TIMER_PAST); 336 337 /* Timer should have fired already */ 338 guest_wait_for_irq(); 339 340 GUEST_SYNC(TEST_LOCKING_SEND_RACE); 341 /* Racing host ioctls */ 342 343 guest_wait_for_irq(); 344 345 GUEST_SYNC(TEST_LOCKING_POLL_RACE); 346 /* Racing vmcall against host ioctl */ 347 348 ports[0] = 0; 349 350 p = (struct sched_poll) { 351 .ports = ports, 352 .nr_ports = 1, 353 .timeout = 0 354 }; 355 356wait_for_timer: 357 /* 358 * Poll for a timer wake event while the worker thread is mucking with 359 * the shared info. KVM XEN drops timer IRQs if the shared info is 360 * invalid when the timer expires. Arbitrarily poll 100 times before 361 * giving up and asking the VMM to re-arm the timer. 100 polls should 362 * consume enough time to beat on KVM without taking too long if the 363 * timer IRQ is dropped due to an invalid event channel. 364 */ 365 for (i = 0; i < 100 && !guest_saw_irq; i++) 366 __xen_hypercall(__HYPERVISOR_sched_op, SCHEDOP_poll, &p); 367 368 /* 369 * Re-send the timer IRQ if it was (likely) dropped due to the timer 370 * expiring while the event channel was invalid. 371 */ 372 if (!guest_saw_irq) { 373 GUEST_SYNC(TEST_LOCKING_POLL_TIMEOUT); 374 goto wait_for_timer; 375 } 376 guest_saw_irq = false; 377 378 GUEST_SYNC(TEST_DONE); 379} 380 381static struct shared_info *shinfo; 382static struct vcpu_info *vinfo; 383static struct kvm_vcpu *vcpu; 384 385static void handle_alrm(int sig) 386{ 387 if (vinfo) 388 printf("evtchn_upcall_pending 0x%x\n", vinfo->evtchn_upcall_pending); 389 vcpu_dump(stdout, vcpu, 0); 390 TEST_FAIL("IRQ delivery timed out"); 391} 392 393static void *juggle_shinfo_state(void *arg) 394{ 395 struct kvm_vm *vm = (struct kvm_vm *)arg; 396 397 struct kvm_xen_hvm_attr cache_activate_gfn = { 398 .type = KVM_XEN_ATTR_TYPE_SHARED_INFO, 399 .u.shared_info.gfn = SHINFO_REGION_GPA / PAGE_SIZE 400 }; 401 402 struct kvm_xen_hvm_attr cache_deactivate_gfn = { 403 .type = KVM_XEN_ATTR_TYPE_SHARED_INFO, 404 .u.shared_info.gfn = KVM_XEN_INVALID_GFN 405 }; 406 407 struct kvm_xen_hvm_attr cache_activate_hva = { 408 .type = KVM_XEN_ATTR_TYPE_SHARED_INFO_HVA, 409 .u.shared_info.hva = (unsigned long)shinfo 410 }; 411 412 struct kvm_xen_hvm_attr cache_deactivate_hva = { 413 .type = KVM_XEN_ATTR_TYPE_SHARED_INFO, 414 .u.shared_info.hva = 0 415 }; 416 417 int xen_caps = kvm_check_cap(KVM_CAP_XEN_HVM); 418 419 for (;;) { 420 __vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &cache_activate_gfn); 421 pthread_testcancel(); 422 __vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &cache_deactivate_gfn); 423 424 if (xen_caps & KVM_XEN_HVM_CONFIG_SHARED_INFO_HVA) { 425 __vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &cache_activate_hva); 426 pthread_testcancel(); 427 __vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &cache_deactivate_hva); 428 } 429 } 430 431 return NULL; 432} 433 434int main(int argc, char *argv[]) 435{ 436 struct kvm_xen_hvm_attr evt_reset; 437 struct kvm_vm *vm; 438 pthread_t thread; 439 bool verbose; 440 int ret; 441 442 verbose = argc > 1 && (!strncmp(argv[1], "-v", 3) || 443 !strncmp(argv[1], "--verbose", 10)); 444 445 int xen_caps = kvm_check_cap(KVM_CAP_XEN_HVM); 446 TEST_REQUIRE(xen_caps & KVM_XEN_HVM_CONFIG_SHARED_INFO); 447 448 bool do_runstate_tests = !!(xen_caps & KVM_XEN_HVM_CONFIG_RUNSTATE); 449 bool do_runstate_flag = !!(xen_caps & KVM_XEN_HVM_CONFIG_RUNSTATE_UPDATE_FLAG); 450 bool do_eventfd_tests = !!(xen_caps & KVM_XEN_HVM_CONFIG_EVTCHN_2LEVEL); 451 bool do_evtchn_tests = do_eventfd_tests && !!(xen_caps & KVM_XEN_HVM_CONFIG_EVTCHN_SEND); 452 bool has_shinfo_hva = !!(xen_caps & KVM_XEN_HVM_CONFIG_SHARED_INFO_HVA); 453 454 vm = vm_create_with_one_vcpu(&vcpu, guest_code); 455 456 /* Map a region for the shared_info page */ 457 vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS, 458 SHINFO_REGION_GPA, SHINFO_REGION_SLOT, 3, 0); 459 virt_map(vm, SHINFO_REGION_GVA, SHINFO_REGION_GPA, 3); 460 461 shinfo = addr_gpa2hva(vm, SHINFO_VADDR); 462 463 int zero_fd = open("/dev/zero", O_RDONLY); 464 TEST_ASSERT(zero_fd != -1, "Failed to open /dev/zero"); 465 466 struct kvm_xen_hvm_config hvmc = { 467 .flags = KVM_XEN_HVM_CONFIG_INTERCEPT_HCALL, 468 .msr = XEN_HYPERCALL_MSR, 469 }; 470 471 /* Let the kernel know that we *will* use it for sending all 472 * event channels, which lets it intercept SCHEDOP_poll */ 473 if (do_evtchn_tests) 474 hvmc.flags |= KVM_XEN_HVM_CONFIG_EVTCHN_SEND; 475 476 vm_ioctl(vm, KVM_XEN_HVM_CONFIG, &hvmc); 477 478 struct kvm_xen_hvm_attr lm = { 479 .type = KVM_XEN_ATTR_TYPE_LONG_MODE, 480 .u.long_mode = 1, 481 }; 482 vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &lm); 483 484 if (do_runstate_flag) { 485 struct kvm_xen_hvm_attr ruf = { 486 .type = KVM_XEN_ATTR_TYPE_RUNSTATE_UPDATE_FLAG, 487 .u.runstate_update_flag = 1, 488 }; 489 vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &ruf); 490 491 ruf.u.runstate_update_flag = 0; 492 vm_ioctl(vm, KVM_XEN_HVM_GET_ATTR, &ruf); 493 TEST_ASSERT(ruf.u.runstate_update_flag == 1, 494 "Failed to read back RUNSTATE_UPDATE_FLAG attr"); 495 } 496 497 struct kvm_xen_hvm_attr ha = {}; 498 499 if (has_shinfo_hva) { 500 ha.type = KVM_XEN_ATTR_TYPE_SHARED_INFO_HVA; 501 ha.u.shared_info.hva = (unsigned long)shinfo; 502 } else { 503 ha.type = KVM_XEN_ATTR_TYPE_SHARED_INFO; 504 ha.u.shared_info.gfn = SHINFO_ADDR / PAGE_SIZE; 505 } 506 507 vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &ha); 508 509 /* 510 * Test what happens when the HVA of the shinfo page is remapped after 511 * the kernel has a reference to it. But make sure we copy the clock 512 * info over since that's only set at setup time, and we test it later. 513 */ 514 struct pvclock_wall_clock wc_copy = shinfo->wc; 515 void *m = mmap(shinfo, PAGE_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED|MAP_PRIVATE, zero_fd, 0); 516 TEST_ASSERT(m == shinfo, "Failed to map /dev/zero over shared info"); 517 shinfo->wc = wc_copy; 518 519 struct kvm_xen_vcpu_attr vi = { 520 .type = KVM_XEN_VCPU_ATTR_TYPE_VCPU_INFO, 521 .u.gpa = VCPU_INFO_ADDR, 522 }; 523 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &vi); 524 525 struct kvm_xen_vcpu_attr pvclock = { 526 .type = KVM_XEN_VCPU_ATTR_TYPE_VCPU_TIME_INFO, 527 .u.gpa = PVTIME_ADDR, 528 }; 529 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &pvclock); 530 531 struct kvm_xen_hvm_attr vec = { 532 .type = KVM_XEN_ATTR_TYPE_UPCALL_VECTOR, 533 .u.vector = EVTCHN_VECTOR, 534 }; 535 vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &vec); 536 537 vm_install_exception_handler(vm, EVTCHN_VECTOR, evtchn_handler); 538 539 if (do_runstate_tests) { 540 struct kvm_xen_vcpu_attr st = { 541 .type = KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_ADDR, 542 .u.gpa = RUNSTATE_ADDR, 543 }; 544 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &st); 545 } 546 547 int irq_fd[2] = { -1, -1 }; 548 549 if (do_eventfd_tests) { 550 irq_fd[0] = kvm_new_eventfd(); 551 irq_fd[1] = kvm_new_eventfd(); 552 553 irq_routes.info.nr = 2; 554 555 irq_routes.entries[0].gsi = 32; 556 irq_routes.entries[0].type = KVM_IRQ_ROUTING_XEN_EVTCHN; 557 irq_routes.entries[0].u.xen_evtchn.port = EVTCHN_TEST1; 558 irq_routes.entries[0].u.xen_evtchn.vcpu = vcpu->id; 559 irq_routes.entries[0].u.xen_evtchn.priority = KVM_IRQ_ROUTING_XEN_EVTCHN_PRIO_2LEVEL; 560 561 irq_routes.entries[1].gsi = 33; 562 irq_routes.entries[1].type = KVM_IRQ_ROUTING_XEN_EVTCHN; 563 irq_routes.entries[1].u.xen_evtchn.port = EVTCHN_TEST2; 564 irq_routes.entries[1].u.xen_evtchn.vcpu = vcpu->id; 565 irq_routes.entries[1].u.xen_evtchn.priority = KVM_IRQ_ROUTING_XEN_EVTCHN_PRIO_2LEVEL; 566 567 vm_ioctl(vm, KVM_SET_GSI_ROUTING, &irq_routes.info); 568 569 kvm_assign_irqfd(vm, 32, irq_fd[0]); 570 kvm_assign_irqfd(vm, 33, irq_fd[1]); 571 572 struct sigaction sa = { }; 573 sa.sa_handler = handle_alrm; 574 sigaction(SIGALRM, &sa, NULL); 575 } 576 577 struct kvm_xen_vcpu_attr tmr = { 578 .type = KVM_XEN_VCPU_ATTR_TYPE_TIMER, 579 .u.timer.port = EVTCHN_TIMER, 580 .u.timer.priority = KVM_IRQ_ROUTING_XEN_EVTCHN_PRIO_2LEVEL, 581 .u.timer.expires_ns = 0 582 }; 583 584 if (do_evtchn_tests) { 585 struct kvm_xen_hvm_attr inj = { 586 .type = KVM_XEN_ATTR_TYPE_EVTCHN, 587 .u.evtchn.send_port = 127, 588 .u.evtchn.type = EVTCHNSTAT_interdomain, 589 .u.evtchn.flags = 0, 590 .u.evtchn.deliver.port.port = EVTCHN_TEST1, 591 .u.evtchn.deliver.port.vcpu = vcpu->id + 1, 592 .u.evtchn.deliver.port.priority = KVM_IRQ_ROUTING_XEN_EVTCHN_PRIO_2LEVEL, 593 }; 594 vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &inj); 595 596 /* Test migration to a different vCPU */ 597 inj.u.evtchn.flags = KVM_XEN_EVTCHN_UPDATE; 598 inj.u.evtchn.deliver.port.vcpu = vcpu->id; 599 vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &inj); 600 601 inj.u.evtchn.send_port = 197; 602 inj.u.evtchn.deliver.eventfd.port = 0; 603 inj.u.evtchn.deliver.eventfd.fd = irq_fd[1]; 604 inj.u.evtchn.flags = 0; 605 vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &inj); 606 607 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &tmr); 608 } 609 vinfo = addr_gpa2hva(vm, VCPU_INFO_VADDR); 610 vinfo->evtchn_upcall_pending = 0; 611 612 struct vcpu_runstate_info *rs = addr_gpa2hva(vm, RUNSTATE_ADDR); 613 rs->state = 0x5a; 614 615 bool evtchn_irq_expected = false; 616 617 for (;;) { 618 struct ucall uc; 619 620 vcpu_run(vcpu); 621 TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_IO); 622 623 switch (get_ucall(vcpu, &uc)) { 624 case UCALL_ABORT: 625 REPORT_GUEST_ASSERT(uc); 626 /* NOT REACHED */ 627 case UCALL_SYNC: { 628 struct kvm_xen_vcpu_attr rst; 629 long rundelay; 630 631 if (do_runstate_tests) 632 TEST_ASSERT(rs->state_entry_time == rs->time[0] + 633 rs->time[1] + rs->time[2] + rs->time[3], 634 "runstate times don't add up"); 635 636 switch (uc.args[1]) { 637 case TEST_INJECT_VECTOR: 638 if (verbose) 639 printf("Delivering evtchn upcall\n"); 640 evtchn_irq_expected = true; 641 vinfo->evtchn_upcall_pending = 1; 642 break; 643 644 case TEST_RUNSTATE_runnable...TEST_RUNSTATE_offline: 645 TEST_ASSERT(!evtchn_irq_expected, "Event channel IRQ not seen"); 646 if (!do_runstate_tests) 647 goto done; 648 if (verbose) 649 printf("Testing runstate %s\n", runstate_names[uc.args[1]]); 650 rst.type = KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_CURRENT; 651 rst.u.runstate.state = uc.args[1] + RUNSTATE_runnable - 652 TEST_RUNSTATE_runnable; 653 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &rst); 654 break; 655 656 case TEST_RUNSTATE_ADJUST: 657 if (verbose) 658 printf("Testing RUNSTATE_ADJUST\n"); 659 rst.type = KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_ADJUST; 660 memset(&rst.u, 0, sizeof(rst.u)); 661 rst.u.runstate.state = (uint64_t)-1; 662 rst.u.runstate.time_blocked = 663 0x5a - rs->time[RUNSTATE_blocked]; 664 rst.u.runstate.time_offline = 665 0x6b6b - rs->time[RUNSTATE_offline]; 666 rst.u.runstate.time_runnable = -rst.u.runstate.time_blocked - 667 rst.u.runstate.time_offline; 668 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &rst); 669 break; 670 671 case TEST_RUNSTATE_DATA: 672 if (verbose) 673 printf("Testing RUNSTATE_DATA\n"); 674 rst.type = KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_DATA; 675 memset(&rst.u, 0, sizeof(rst.u)); 676 rst.u.runstate.state = RUNSTATE_running; 677 rst.u.runstate.state_entry_time = 0x6b6b + 0x5a; 678 rst.u.runstate.time_blocked = 0x6b6b; 679 rst.u.runstate.time_offline = 0x5a; 680 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &rst); 681 break; 682 683 case TEST_STEAL_TIME: 684 if (verbose) 685 printf("Testing steal time\n"); 686 /* Yield until scheduler delay exceeds target */ 687 rundelay = get_run_delay() + MIN_STEAL_TIME; 688 do { 689 sched_yield(); 690 } while (get_run_delay() < rundelay); 691 break; 692 693 case TEST_EVTCHN_MASKED: 694 if (!do_eventfd_tests) 695 goto done; 696 if (verbose) 697 printf("Testing masked event channel\n"); 698 shinfo->evtchn_mask[0] = 1UL << EVTCHN_TEST1; 699 eventfd_write(irq_fd[0], 1UL); 700 alarm(1); 701 break; 702 703 case TEST_EVTCHN_UNMASKED: 704 if (verbose) 705 printf("Testing unmasked event channel\n"); 706 /* Unmask that, but deliver the other one */ 707 shinfo->evtchn_pending[0] = 0; 708 shinfo->evtchn_mask[0] = 0; 709 eventfd_write(irq_fd[1], 1UL); 710 evtchn_irq_expected = true; 711 alarm(1); 712 break; 713 714 case TEST_EVTCHN_SLOWPATH: 715 TEST_ASSERT(!evtchn_irq_expected, 716 "Expected event channel IRQ but it didn't happen"); 717 shinfo->evtchn_pending[1] = 0; 718 if (verbose) 719 printf("Testing event channel after memslot change\n"); 720 vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS, 721 DUMMY_REGION_GPA, DUMMY_REGION_SLOT, 1, 0); 722 eventfd_write(irq_fd[0], 1UL); 723 evtchn_irq_expected = true; 724 alarm(1); 725 break; 726 727 case TEST_EVTCHN_SEND_IOCTL: 728 TEST_ASSERT(!evtchn_irq_expected, 729 "Expected event channel IRQ but it didn't happen"); 730 if (!do_evtchn_tests) 731 goto done; 732 733 shinfo->evtchn_pending[0] = 0; 734 if (verbose) 735 printf("Testing injection with KVM_XEN_HVM_EVTCHN_SEND\n"); 736 737 struct kvm_irq_routing_xen_evtchn e; 738 e.port = EVTCHN_TEST2; 739 e.vcpu = vcpu->id; 740 e.priority = KVM_IRQ_ROUTING_XEN_EVTCHN_PRIO_2LEVEL; 741 742 vm_ioctl(vm, KVM_XEN_HVM_EVTCHN_SEND, &e); 743 evtchn_irq_expected = true; 744 alarm(1); 745 break; 746 747 case TEST_EVTCHN_HCALL: 748 TEST_ASSERT(!evtchn_irq_expected, 749 "Expected event channel IRQ but it didn't happen"); 750 shinfo->evtchn_pending[1] = 0; 751 752 if (verbose) 753 printf("Testing guest EVTCHNOP_send direct to evtchn\n"); 754 evtchn_irq_expected = true; 755 alarm(1); 756 break; 757 758 case TEST_EVTCHN_HCALL_SLOWPATH: 759 TEST_ASSERT(!evtchn_irq_expected, 760 "Expected event channel IRQ but it didn't happen"); 761 shinfo->evtchn_pending[0] = 0; 762 763 if (verbose) 764 printf("Testing guest EVTCHNOP_send direct to evtchn after memslot change\n"); 765 vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS, 766 DUMMY_REGION_GPA_2, DUMMY_REGION_SLOT_2, 1, 0); 767 evtchn_irq_expected = true; 768 alarm(1); 769 break; 770 771 case TEST_EVTCHN_HCALL_EVENTFD: 772 TEST_ASSERT(!evtchn_irq_expected, 773 "Expected event channel IRQ but it didn't happen"); 774 shinfo->evtchn_pending[0] = 0; 775 776 if (verbose) 777 printf("Testing guest EVTCHNOP_send to eventfd\n"); 778 evtchn_irq_expected = true; 779 alarm(1); 780 break; 781 782 case TEST_TIMER_SETUP: 783 TEST_ASSERT(!evtchn_irq_expected, 784 "Expected event channel IRQ but it didn't happen"); 785 shinfo->evtchn_pending[1] = 0; 786 787 if (verbose) 788 printf("Testing guest oneshot timer\n"); 789 break; 790 791 case TEST_TIMER_WAIT: 792 memset(&tmr, 0, sizeof(tmr)); 793 tmr.type = KVM_XEN_VCPU_ATTR_TYPE_TIMER; 794 vcpu_ioctl(vcpu, KVM_XEN_VCPU_GET_ATTR, &tmr); 795 TEST_ASSERT(tmr.u.timer.port == EVTCHN_TIMER, 796 "Timer port not returned"); 797 TEST_ASSERT(tmr.u.timer.priority == KVM_IRQ_ROUTING_XEN_EVTCHN_PRIO_2LEVEL, 798 "Timer priority not returned"); 799 TEST_ASSERT(tmr.u.timer.expires_ns > rs->state_entry_time, 800 "Timer expiry not returned"); 801 evtchn_irq_expected = true; 802 alarm(1); 803 break; 804 805 case TEST_TIMER_RESTORE: 806 TEST_ASSERT(!evtchn_irq_expected, 807 "Expected event channel IRQ but it didn't happen"); 808 shinfo->evtchn_pending[0] = 0; 809 810 if (verbose) 811 printf("Testing restored oneshot timer\n"); 812 813 tmr.u.timer.expires_ns = rs->state_entry_time + 100000000; 814 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &tmr); 815 evtchn_irq_expected = true; 816 alarm(1); 817 break; 818 819 case TEST_POLL_READY: 820 TEST_ASSERT(!evtchn_irq_expected, 821 "Expected event channel IRQ but it didn't happen"); 822 823 if (verbose) 824 printf("Testing SCHEDOP_poll with already pending event\n"); 825 shinfo->evtchn_pending[0] = shinfo->evtchn_mask[0] = 1UL << EVTCHN_TIMER; 826 alarm(1); 827 break; 828 829 case TEST_POLL_TIMEOUT: 830 if (verbose) 831 printf("Testing SCHEDOP_poll timeout\n"); 832 shinfo->evtchn_pending[0] = 0; 833 alarm(1); 834 break; 835 836 case TEST_POLL_MASKED: 837 if (verbose) 838 printf("Testing SCHEDOP_poll wake on masked event\n"); 839 840 tmr.u.timer.expires_ns = rs->state_entry_time + 100000000; 841 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &tmr); 842 alarm(1); 843 break; 844 845 case TEST_POLL_WAKE: 846 shinfo->evtchn_pending[0] = shinfo->evtchn_mask[0] = 0; 847 if (verbose) 848 printf("Testing SCHEDOP_poll wake on unmasked event\n"); 849 850 evtchn_irq_expected = true; 851 tmr.u.timer.expires_ns = rs->state_entry_time + 100000000; 852 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &tmr); 853 854 /* Read it back and check the pending time is reported correctly */ 855 tmr.u.timer.expires_ns = 0; 856 vcpu_ioctl(vcpu, KVM_XEN_VCPU_GET_ATTR, &tmr); 857 TEST_ASSERT(tmr.u.timer.expires_ns == rs->state_entry_time + 100000000, 858 "Timer not reported pending"); 859 alarm(1); 860 break; 861 862 case SET_VCPU_INFO: 863 if (has_shinfo_hva) { 864 struct kvm_xen_vcpu_attr vih = { 865 .type = KVM_XEN_VCPU_ATTR_TYPE_VCPU_INFO_HVA, 866 .u.hva = (unsigned long)vinfo 867 }; 868 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &vih); 869 } 870 break; 871 872 case TEST_TIMER_PAST: 873 TEST_ASSERT(!evtchn_irq_expected, 874 "Expected event channel IRQ but it didn't happen"); 875 /* Read timer and check it is no longer pending */ 876 vcpu_ioctl(vcpu, KVM_XEN_VCPU_GET_ATTR, &tmr); 877 TEST_ASSERT(!tmr.u.timer.expires_ns, "Timer still reported pending"); 878 879 shinfo->evtchn_pending[0] = 0; 880 if (verbose) 881 printf("Testing timer in the past\n"); 882 883 evtchn_irq_expected = true; 884 tmr.u.timer.expires_ns = rs->state_entry_time - 100000000ULL; 885 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &tmr); 886 alarm(1); 887 break; 888 889 case TEST_LOCKING_SEND_RACE: 890 TEST_ASSERT(!evtchn_irq_expected, 891 "Expected event channel IRQ but it didn't happen"); 892 alarm(0); 893 894 if (verbose) 895 printf("Testing shinfo lock corruption (KVM_XEN_HVM_EVTCHN_SEND)\n"); 896 897 ret = pthread_create(&thread, NULL, &juggle_shinfo_state, (void *)vm); 898 TEST_ASSERT(ret == 0, "pthread_create() failed: %s", strerror(ret)); 899 900 struct kvm_irq_routing_xen_evtchn uxe = { 901 .port = 1, 902 .vcpu = vcpu->id, 903 .priority = KVM_IRQ_ROUTING_XEN_EVTCHN_PRIO_2LEVEL 904 }; 905 906 evtchn_irq_expected = true; 907 for (time_t t = time(NULL) + SHINFO_RACE_TIMEOUT; time(NULL) < t;) 908 __vm_ioctl(vm, KVM_XEN_HVM_EVTCHN_SEND, &uxe); 909 break; 910 911 case TEST_LOCKING_POLL_RACE: 912 TEST_ASSERT(!evtchn_irq_expected, 913 "Expected event channel IRQ but it didn't happen"); 914 915 if (verbose) 916 printf("Testing shinfo lock corruption (SCHEDOP_poll)\n"); 917 918 shinfo->evtchn_pending[0] = 1; 919 920 evtchn_irq_expected = true; 921 tmr.u.timer.expires_ns = rs->state_entry_time + 922 SHINFO_RACE_TIMEOUT * 1000000000ULL; 923 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &tmr); 924 break; 925 926 case TEST_LOCKING_POLL_TIMEOUT: 927 /* 928 * Optional and possibly repeated sync point. 929 * Injecting the timer IRQ may fail if the 930 * shinfo is invalid when the timer expires. 931 * If the timer has expired but the IRQ hasn't 932 * been delivered, rearm the timer and retry. 933 */ 934 vcpu_ioctl(vcpu, KVM_XEN_VCPU_GET_ATTR, &tmr); 935 936 /* Resume the guest if the timer is still pending. */ 937 if (tmr.u.timer.expires_ns) 938 break; 939 940 /* All done if the IRQ was delivered. */ 941 if (!evtchn_irq_expected) 942 break; 943 944 tmr.u.timer.expires_ns = rs->state_entry_time + 945 SHINFO_RACE_TIMEOUT * 1000000000ULL; 946 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &tmr); 947 break; 948 case TEST_DONE: 949 TEST_ASSERT(!evtchn_irq_expected, 950 "Expected event channel IRQ but it didn't happen"); 951 952 ret = pthread_cancel(thread); 953 TEST_ASSERT(ret == 0, "pthread_cancel() failed: %s", strerror(ret)); 954 955 ret = pthread_join(thread, 0); 956 TEST_ASSERT(ret == 0, "pthread_join() failed: %s", strerror(ret)); 957 goto done; 958 959 case TEST_GUEST_SAW_IRQ: 960 TEST_ASSERT(evtchn_irq_expected, "Unexpected event channel IRQ"); 961 evtchn_irq_expected = false; 962 break; 963 } 964 break; 965 } 966 case UCALL_DONE: 967 goto done; 968 default: 969 TEST_FAIL("Unknown ucall 0x%lx.", uc.cmd); 970 } 971 } 972 973 done: 974 evt_reset.type = KVM_XEN_ATTR_TYPE_EVTCHN; 975 evt_reset.u.evtchn.flags = KVM_XEN_EVTCHN_RESET; 976 vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &evt_reset); 977 978 alarm(0); 979 980 /* 981 * Just a *really* basic check that things are being put in the 982 * right place. The actual calculations are much the same for 983 * Xen as they are for the KVM variants, so no need to check. 984 */ 985 struct pvclock_wall_clock *wc; 986 struct pvclock_vcpu_time_info *ti, *ti2; 987 struct kvm_clock_data kcdata; 988 long long delta; 989 990 wc = addr_gpa2hva(vm, SHINFO_REGION_GPA + 0xc00); 991 ti = addr_gpa2hva(vm, SHINFO_REGION_GPA + 0x40 + 0x20); 992 ti2 = addr_gpa2hva(vm, PVTIME_ADDR); 993 994 if (verbose) { 995 printf("Wall clock (v %d) %d.%09d\n", wc->version, wc->sec, wc->nsec); 996 printf("Time info 1: v %u tsc %" PRIu64 " time %" PRIu64 " mul %u shift %u flags %x\n", 997 ti->version, ti->tsc_timestamp, ti->system_time, ti->tsc_to_system_mul, 998 ti->tsc_shift, ti->flags); 999 printf("Time info 2: v %u tsc %" PRIu64 " time %" PRIu64 " mul %u shift %u flags %x\n", 1000 ti2->version, ti2->tsc_timestamp, ti2->system_time, ti2->tsc_to_system_mul, 1001 ti2->tsc_shift, ti2->flags); 1002 } 1003 1004 TEST_ASSERT(wc->version && !(wc->version & 1), 1005 "Bad wallclock version %x", wc->version); 1006 1007 vm_ioctl(vm, KVM_GET_CLOCK, &kcdata); 1008 1009 if (kcdata.flags & KVM_CLOCK_REALTIME) { 1010 if (verbose) { 1011 printf("KVM_GET_CLOCK clock: %lld.%09lld\n", 1012 kcdata.clock / NSEC_PER_SEC, kcdata.clock % NSEC_PER_SEC); 1013 printf("KVM_GET_CLOCK realtime: %lld.%09lld\n", 1014 kcdata.realtime / NSEC_PER_SEC, kcdata.realtime % NSEC_PER_SEC); 1015 } 1016 1017 delta = (wc->sec * NSEC_PER_SEC + wc->nsec) - (kcdata.realtime - kcdata.clock); 1018 1019 /* 1020 * KVM_GET_CLOCK gives CLOCK_REALTIME which jumps on leap seconds updates but 1021 * unfortunately KVM doesn't currently offer a CLOCK_TAI alternative. Accept 1s 1022 * delta as testing clock accuracy is not the goal here. The test just needs to 1023 * check that the value in shinfo is somewhat sane. 1024 */ 1025 TEST_ASSERT(llabs(delta) < NSEC_PER_SEC, 1026 "Guest's epoch from shinfo %d.%09d differs from KVM_GET_CLOCK %lld.%lld", 1027 wc->sec, wc->nsec, (kcdata.realtime - kcdata.clock) / NSEC_PER_SEC, 1028 (kcdata.realtime - kcdata.clock) % NSEC_PER_SEC); 1029 } else { 1030 pr_info("Missing KVM_CLOCK_REALTIME, skipping shinfo epoch sanity check\n"); 1031 } 1032 1033 TEST_ASSERT(ti->version && !(ti->version & 1), 1034 "Bad time_info version %x", ti->version); 1035 TEST_ASSERT(ti2->version && !(ti2->version & 1), 1036 "Bad time_info version %x", ti->version); 1037 1038 if (do_runstate_tests) { 1039 /* 1040 * Fetch runstate and check sanity. Strictly speaking in the 1041 * general case we might not expect the numbers to be identical 1042 * but in this case we know we aren't running the vCPU any more. 1043 */ 1044 struct kvm_xen_vcpu_attr rst = { 1045 .type = KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_DATA, 1046 }; 1047 vcpu_ioctl(vcpu, KVM_XEN_VCPU_GET_ATTR, &rst); 1048 1049 if (verbose) { 1050 printf("Runstate: %s(%d), entry %" PRIu64 " ns\n", 1051 rs->state <= RUNSTATE_offline ? runstate_names[rs->state] : "unknown", 1052 rs->state, rs->state_entry_time); 1053 for (int i = RUNSTATE_running; i <= RUNSTATE_offline; i++) { 1054 printf("State %s: %" PRIu64 " ns\n", 1055 runstate_names[i], rs->time[i]); 1056 } 1057 } 1058 1059 /* 1060 * Exercise runstate info at all points across the page boundary, in 1061 * 32-bit and 64-bit mode. In particular, test the case where it is 1062 * configured in 32-bit mode and then switched to 64-bit mode while 1063 * active, which takes it onto the second page. 1064 */ 1065 unsigned long runstate_addr; 1066 struct compat_vcpu_runstate_info *crs; 1067 for (runstate_addr = SHINFO_REGION_GPA + PAGE_SIZE + PAGE_SIZE - sizeof(*rs) - 4; 1068 runstate_addr < SHINFO_REGION_GPA + PAGE_SIZE + PAGE_SIZE + 4; runstate_addr++) { 1069 1070 rs = addr_gpa2hva(vm, runstate_addr); 1071 crs = (void *)rs; 1072 1073 memset(rs, 0xa5, sizeof(*rs)); 1074 1075 /* Set to compatibility mode */ 1076 lm.u.long_mode = 0; 1077 vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &lm); 1078 1079 /* Set runstate to new address (kernel will write it) */ 1080 struct kvm_xen_vcpu_attr st = { 1081 .type = KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_ADDR, 1082 .u.gpa = runstate_addr, 1083 }; 1084 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &st); 1085 1086 if (verbose) 1087 printf("Compatibility runstate at %08lx\n", runstate_addr); 1088 1089 TEST_ASSERT(crs->state == rst.u.runstate.state, "Runstate mismatch"); 1090 TEST_ASSERT(crs->state_entry_time == rst.u.runstate.state_entry_time, 1091 "State entry time mismatch"); 1092 TEST_ASSERT(crs->time[RUNSTATE_running] == rst.u.runstate.time_running, 1093 "Running time mismatch"); 1094 TEST_ASSERT(crs->time[RUNSTATE_runnable] == rst.u.runstate.time_runnable, 1095 "Runnable time mismatch"); 1096 TEST_ASSERT(crs->time[RUNSTATE_blocked] == rst.u.runstate.time_blocked, 1097 "Blocked time mismatch"); 1098 TEST_ASSERT(crs->time[RUNSTATE_offline] == rst.u.runstate.time_offline, 1099 "Offline time mismatch"); 1100 TEST_ASSERT(crs->time[RUNSTATE_offline + 1] == 0xa5a5a5a5a5a5a5a5ULL, 1101 "Structure overrun"); 1102 TEST_ASSERT(crs->state_entry_time == crs->time[0] + 1103 crs->time[1] + crs->time[2] + crs->time[3], 1104 "runstate times don't add up"); 1105 1106 1107 /* Now switch to 64-bit mode */ 1108 lm.u.long_mode = 1; 1109 vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &lm); 1110 1111 memset(rs, 0xa5, sizeof(*rs)); 1112 1113 /* Don't change the address, just trigger a write */ 1114 struct kvm_xen_vcpu_attr adj = { 1115 .type = KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_ADJUST, 1116 .u.runstate.state = (uint64_t)-1 1117 }; 1118 vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &adj); 1119 1120 if (verbose) 1121 printf("64-bit runstate at %08lx\n", runstate_addr); 1122 1123 TEST_ASSERT(rs->state == rst.u.runstate.state, "Runstate mismatch"); 1124 TEST_ASSERT(rs->state_entry_time == rst.u.runstate.state_entry_time, 1125 "State entry time mismatch"); 1126 TEST_ASSERT(rs->time[RUNSTATE_running] == rst.u.runstate.time_running, 1127 "Running time mismatch"); 1128 TEST_ASSERT(rs->time[RUNSTATE_runnable] == rst.u.runstate.time_runnable, 1129 "Runnable time mismatch"); 1130 TEST_ASSERT(rs->time[RUNSTATE_blocked] == rst.u.runstate.time_blocked, 1131 "Blocked time mismatch"); 1132 TEST_ASSERT(rs->time[RUNSTATE_offline] == rst.u.runstate.time_offline, 1133 "Offline time mismatch"); 1134 TEST_ASSERT(rs->time[RUNSTATE_offline + 1] == 0xa5a5a5a5a5a5a5a5ULL, 1135 "Structure overrun"); 1136 1137 TEST_ASSERT(rs->state_entry_time == rs->time[0] + 1138 rs->time[1] + rs->time[2] + rs->time[3], 1139 "runstate times don't add up"); 1140 } 1141 } 1142 1143 kvm_vm_free(vm); 1144 return 0; 1145}
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