Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1 | /* |
| 2 | * QEMU System Emulator |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | /* Needed early for CONFIG_BSD etc. */ |
| 26 | #include "config-host.h" |
| 27 | |
| 28 | #include "monitor.h" |
| 29 | #include "sysemu.h" |
| 30 | #include "gdbstub.h" |
| 31 | #include "dma.h" |
| 32 | #include "kvm.h" |
Jan Kiszka | 262ea18 | 2010-07-06 10:49:57 +0200 | [diff] [blame] | 33 | #include "exec-all.h" |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 34 | |
Paolo Bonzini | 96284e8 | 2011-03-12 17:43:53 +0100 | [diff] [blame] | 35 | #include "qemu-thread.h" |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 36 | #include "cpus.h" |
Marcelo Tosatti | a8486bc | 2010-10-11 15:31:16 -0300 | [diff] [blame] | 37 | #include "compatfd.h" |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 38 | |
Blue Swirl | 7277e02 | 2010-04-12 17:19:06 +0000 | [diff] [blame] | 39 | #ifdef SIGRTMIN |
| 40 | #define SIG_IPI (SIGRTMIN+4) |
| 41 | #else |
| 42 | #define SIG_IPI SIGUSR1 |
| 43 | #endif |
| 44 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 45 | #ifdef CONFIG_LINUX |
| 46 | |
| 47 | #include <sys/prctl.h> |
| 48 | |
Marcelo Tosatti | c0532a7 | 2010-10-11 15:31:21 -0300 | [diff] [blame] | 49 | #ifndef PR_MCE_KILL |
| 50 | #define PR_MCE_KILL 33 |
| 51 | #endif |
| 52 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 53 | #ifndef PR_MCE_KILL_SET |
| 54 | #define PR_MCE_KILL_SET 1 |
| 55 | #endif |
| 56 | |
| 57 | #ifndef PR_MCE_KILL_EARLY |
| 58 | #define PR_MCE_KILL_EARLY 1 |
| 59 | #endif |
| 60 | |
| 61 | #endif /* CONFIG_LINUX */ |
| 62 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 63 | static CPUState *next_cpu; |
| 64 | |
| 65 | /***********************************************************/ |
| 66 | void hw_error(const char *fmt, ...) |
| 67 | { |
| 68 | va_list ap; |
| 69 | CPUState *env; |
| 70 | |
| 71 | va_start(ap, fmt); |
| 72 | fprintf(stderr, "qemu: hardware error: "); |
| 73 | vfprintf(stderr, fmt, ap); |
| 74 | fprintf(stderr, "\n"); |
| 75 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
| 76 | fprintf(stderr, "CPU #%d:\n", env->cpu_index); |
| 77 | #ifdef TARGET_I386 |
| 78 | cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU); |
| 79 | #else |
| 80 | cpu_dump_state(env, stderr, fprintf, 0); |
| 81 | #endif |
| 82 | } |
| 83 | va_end(ap); |
| 84 | abort(); |
| 85 | } |
| 86 | |
| 87 | void cpu_synchronize_all_states(void) |
| 88 | { |
| 89 | CPUState *cpu; |
| 90 | |
| 91 | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { |
| 92 | cpu_synchronize_state(cpu); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | void cpu_synchronize_all_post_reset(void) |
| 97 | { |
| 98 | CPUState *cpu; |
| 99 | |
| 100 | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { |
| 101 | cpu_synchronize_post_reset(cpu); |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | void cpu_synchronize_all_post_init(void) |
| 106 | { |
| 107 | CPUState *cpu; |
| 108 | |
| 109 | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { |
| 110 | cpu_synchronize_post_init(cpu); |
| 111 | } |
| 112 | } |
| 113 | |
Marcelo Tosatti | 3ae9501 | 2010-05-04 09:45:24 -0300 | [diff] [blame] | 114 | int cpu_is_stopped(CPUState *env) |
| 115 | { |
| 116 | return !vm_running || env->stopped; |
| 117 | } |
| 118 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 119 | static void do_vm_stop(int reason) |
| 120 | { |
| 121 | if (vm_running) { |
| 122 | cpu_disable_ticks(); |
| 123 | vm_running = 0; |
| 124 | pause_all_vcpus(); |
| 125 | vm_state_notify(0, reason); |
Michael S. Tsirkin | 55df6f3 | 2010-11-22 19:52:22 +0200 | [diff] [blame] | 126 | qemu_aio_flush(); |
| 127 | bdrv_flush_all(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 128 | monitor_protocol_event(QEVENT_STOP, NULL); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | static int cpu_can_run(CPUState *env) |
| 133 | { |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 134 | if (env->stop) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 135 | return 0; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 136 | } |
| 137 | if (env->stopped || !vm_running) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 138 | return 0; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 139 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 140 | return 1; |
| 141 | } |
| 142 | |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 143 | static bool cpu_thread_is_idle(CPUState *env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 144 | { |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 145 | if (env->stop || env->queued_work_first) { |
| 146 | return false; |
| 147 | } |
| 148 | if (env->stopped || !vm_running) { |
| 149 | return true; |
| 150 | } |
Jan Kiszka | f2c1cc8 | 2011-03-15 12:26:18 +0100 | [diff] [blame] | 151 | if (!env->halted || qemu_cpu_has_work(env) || |
| 152 | (kvm_enabled() && kvm_irqchip_in_kernel())) { |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 153 | return false; |
| 154 | } |
| 155 | return true; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 156 | } |
| 157 | |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 158 | static bool all_cpu_threads_idle(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 159 | { |
| 160 | CPUState *env; |
| 161 | |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 162 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 163 | if (!cpu_thread_is_idle(env)) { |
| 164 | return false; |
| 165 | } |
| 166 | } |
| 167 | return true; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 168 | } |
| 169 | |
Jan Kiszka | 1009d2e | 2011-03-15 12:26:13 +0100 | [diff] [blame] | 170 | static void cpu_handle_guest_debug(CPUState *env) |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 171 | { |
| 172 | gdb_set_stop_cpu(env); |
Jan Kiszka | 8cf7171 | 2011-02-07 12:19:16 +0100 | [diff] [blame] | 173 | qemu_system_debug_request(); |
Jan Kiszka | 83f338f | 2011-02-07 12:19:17 +0100 | [diff] [blame] | 174 | #ifdef CONFIG_IOTHREAD |
| 175 | env->stopped = 1; |
| 176 | #endif |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 177 | } |
| 178 | |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 179 | #ifdef CONFIG_IOTHREAD |
| 180 | static void cpu_signal(int sig) |
| 181 | { |
| 182 | if (cpu_single_env) { |
| 183 | cpu_exit(cpu_single_env); |
| 184 | } |
| 185 | exit_request = 1; |
| 186 | } |
| 187 | #endif |
| 188 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 189 | #ifdef CONFIG_LINUX |
| 190 | static void sigbus_reraise(void) |
| 191 | { |
| 192 | sigset_t set; |
| 193 | struct sigaction action; |
| 194 | |
| 195 | memset(&action, 0, sizeof(action)); |
| 196 | action.sa_handler = SIG_DFL; |
| 197 | if (!sigaction(SIGBUS, &action, NULL)) { |
| 198 | raise(SIGBUS); |
| 199 | sigemptyset(&set); |
| 200 | sigaddset(&set, SIGBUS); |
| 201 | sigprocmask(SIG_UNBLOCK, &set, NULL); |
| 202 | } |
| 203 | perror("Failed to re-raise SIGBUS!\n"); |
| 204 | abort(); |
| 205 | } |
| 206 | |
| 207 | static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo, |
| 208 | void *ctx) |
| 209 | { |
| 210 | if (kvm_on_sigbus(siginfo->ssi_code, |
| 211 | (void *)(intptr_t)siginfo->ssi_addr)) { |
| 212 | sigbus_reraise(); |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | static void qemu_init_sigbus(void) |
| 217 | { |
| 218 | struct sigaction action; |
| 219 | |
| 220 | memset(&action, 0, sizeof(action)); |
| 221 | action.sa_flags = SA_SIGINFO; |
| 222 | action.sa_sigaction = (void (*)(int, siginfo_t*, void*))sigbus_handler; |
| 223 | sigaction(SIGBUS, &action, NULL); |
| 224 | |
| 225 | prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0); |
| 226 | } |
| 227 | |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 228 | static void qemu_kvm_eat_signals(CPUState *env) |
| 229 | { |
| 230 | struct timespec ts = { 0, 0 }; |
| 231 | siginfo_t siginfo; |
| 232 | sigset_t waitset; |
| 233 | sigset_t chkset; |
| 234 | int r; |
| 235 | |
| 236 | sigemptyset(&waitset); |
| 237 | sigaddset(&waitset, SIG_IPI); |
| 238 | sigaddset(&waitset, SIGBUS); |
| 239 | |
| 240 | do { |
| 241 | r = sigtimedwait(&waitset, &siginfo, &ts); |
| 242 | if (r == -1 && !(errno == EAGAIN || errno == EINTR)) { |
| 243 | perror("sigtimedwait"); |
| 244 | exit(1); |
| 245 | } |
| 246 | |
| 247 | switch (r) { |
| 248 | case SIGBUS: |
| 249 | if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr)) { |
| 250 | sigbus_reraise(); |
| 251 | } |
| 252 | break; |
| 253 | default: |
| 254 | break; |
| 255 | } |
| 256 | |
| 257 | r = sigpending(&chkset); |
| 258 | if (r == -1) { |
| 259 | perror("sigpending"); |
| 260 | exit(1); |
| 261 | } |
| 262 | } while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS)); |
| 263 | |
| 264 | #ifndef CONFIG_IOTHREAD |
| 265 | if (sigismember(&chkset, SIGIO) || sigismember(&chkset, SIGALRM)) { |
| 266 | qemu_notify_event(); |
| 267 | } |
| 268 | #endif |
| 269 | } |
| 270 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 271 | #else /* !CONFIG_LINUX */ |
| 272 | |
| 273 | static void qemu_init_sigbus(void) |
| 274 | { |
| 275 | } |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 276 | |
| 277 | static void qemu_kvm_eat_signals(CPUState *env) |
| 278 | { |
| 279 | } |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 280 | #endif /* !CONFIG_LINUX */ |
| 281 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 282 | #ifndef _WIN32 |
| 283 | static int io_thread_fd = -1; |
| 284 | |
| 285 | static void qemu_event_increment(void) |
| 286 | { |
| 287 | /* Write 8 bytes to be compatible with eventfd. */ |
Blue Swirl | 26a8233 | 2010-05-14 19:32:21 +0000 | [diff] [blame] | 288 | static const uint64_t val = 1; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 289 | ssize_t ret; |
| 290 | |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 291 | if (io_thread_fd == -1) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 292 | return; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 293 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 294 | do { |
| 295 | ret = write(io_thread_fd, &val, sizeof(val)); |
| 296 | } while (ret < 0 && errno == EINTR); |
| 297 | |
| 298 | /* EAGAIN is fine, a read must be pending. */ |
| 299 | if (ret < 0 && errno != EAGAIN) { |
| 300 | fprintf(stderr, "qemu_event_increment: write() filed: %s\n", |
| 301 | strerror(errno)); |
| 302 | exit (1); |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | static void qemu_event_read(void *opaque) |
| 307 | { |
Stefan Weil | e0efb99 | 2011-02-23 19:09:16 +0100 | [diff] [blame] | 308 | int fd = (intptr_t)opaque; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 309 | ssize_t len; |
| 310 | char buffer[512]; |
| 311 | |
| 312 | /* Drain the notify pipe. For eventfd, only 8 bytes will be read. */ |
| 313 | do { |
| 314 | len = read(fd, buffer, sizeof(buffer)); |
| 315 | } while ((len == -1 && errno == EINTR) || len == sizeof(buffer)); |
| 316 | } |
| 317 | |
| 318 | static int qemu_event_init(void) |
| 319 | { |
| 320 | int err; |
| 321 | int fds[2]; |
| 322 | |
| 323 | err = qemu_eventfd(fds); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 324 | if (err == -1) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 325 | return -errno; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 326 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 327 | err = fcntl_setfl(fds[0], O_NONBLOCK); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 328 | if (err < 0) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 329 | goto fail; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 330 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 331 | err = fcntl_setfl(fds[1], O_NONBLOCK); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 332 | if (err < 0) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 333 | goto fail; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 334 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 335 | qemu_set_fd_handler2(fds[0], NULL, qemu_event_read, NULL, |
Stefan Weil | e0efb99 | 2011-02-23 19:09:16 +0100 | [diff] [blame] | 336 | (void *)(intptr_t)fds[0]); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 337 | |
| 338 | io_thread_fd = fds[1]; |
| 339 | return 0; |
| 340 | |
| 341 | fail: |
| 342 | close(fds[0]); |
| 343 | close(fds[1]); |
| 344 | return err; |
| 345 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 346 | |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 347 | static void dummy_signal(int sig) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 348 | { |
| 349 | } |
| 350 | |
Marcelo Tosatti | a8486bc | 2010-10-11 15:31:16 -0300 | [diff] [blame] | 351 | /* If we have signalfd, we mask out the signals we want to handle and then |
| 352 | * use signalfd to listen for them. We rely on whatever the current signal |
| 353 | * handler is to dispatch the signals when we receive them. |
| 354 | */ |
| 355 | static void sigfd_handler(void *opaque) |
| 356 | { |
Stefan Weil | e0efb99 | 2011-02-23 19:09:16 +0100 | [diff] [blame] | 357 | int fd = (intptr_t)opaque; |
Marcelo Tosatti | a8486bc | 2010-10-11 15:31:16 -0300 | [diff] [blame] | 358 | struct qemu_signalfd_siginfo info; |
| 359 | struct sigaction action; |
| 360 | ssize_t len; |
| 361 | |
| 362 | while (1) { |
| 363 | do { |
| 364 | len = read(fd, &info, sizeof(info)); |
| 365 | } while (len == -1 && errno == EINTR); |
| 366 | |
| 367 | if (len == -1 && errno == EAGAIN) { |
| 368 | break; |
| 369 | } |
| 370 | |
| 371 | if (len != sizeof(info)) { |
| 372 | printf("read from sigfd returned %zd: %m\n", len); |
| 373 | return; |
| 374 | } |
| 375 | |
| 376 | sigaction(info.ssi_signo, NULL, &action); |
| 377 | if ((action.sa_flags & SA_SIGINFO) && action.sa_sigaction) { |
| 378 | action.sa_sigaction(info.ssi_signo, |
| 379 | (siginfo_t *)&info, NULL); |
| 380 | } else if (action.sa_handler) { |
| 381 | action.sa_handler(info.ssi_signo); |
| 382 | } |
| 383 | } |
| 384 | } |
| 385 | |
Paolo Bonzini | 712ae48 | 2011-03-12 17:44:05 +0100 | [diff] [blame] | 386 | static int qemu_signal_init(void) |
Marcelo Tosatti | a8486bc | 2010-10-11 15:31:16 -0300 | [diff] [blame] | 387 | { |
| 388 | int sigfd; |
Paolo Bonzini | 712ae48 | 2011-03-12 17:44:05 +0100 | [diff] [blame] | 389 | sigset_t set; |
Marcelo Tosatti | a8486bc | 2010-10-11 15:31:16 -0300 | [diff] [blame] | 390 | |
Paolo Bonzini | 712ae48 | 2011-03-12 17:44:05 +0100 | [diff] [blame] | 391 | #ifdef CONFIG_IOTHREAD |
| 392 | /* SIGUSR2 used by posix-aio-compat.c */ |
| 393 | sigemptyset(&set); |
| 394 | sigaddset(&set, SIGUSR2); |
| 395 | pthread_sigmask(SIG_UNBLOCK, &set, NULL); |
| 396 | |
| 397 | sigemptyset(&set); |
| 398 | sigaddset(&set, SIGIO); |
| 399 | sigaddset(&set, SIGALRM); |
| 400 | sigaddset(&set, SIG_IPI); |
| 401 | sigaddset(&set, SIGBUS); |
| 402 | pthread_sigmask(SIG_BLOCK, &set, NULL); |
| 403 | #else |
| 404 | sigemptyset(&set); |
| 405 | sigaddset(&set, SIGBUS); |
| 406 | if (kvm_enabled()) { |
| 407 | /* |
| 408 | * We need to process timer signals synchronously to avoid a race |
| 409 | * between exit_request check and KVM vcpu entry. |
| 410 | */ |
| 411 | sigaddset(&set, SIGIO); |
| 412 | sigaddset(&set, SIGALRM); |
| 413 | } |
| 414 | #endif |
| 415 | |
| 416 | sigfd = qemu_signalfd(&set); |
Marcelo Tosatti | a8486bc | 2010-10-11 15:31:16 -0300 | [diff] [blame] | 417 | if (sigfd == -1) { |
| 418 | fprintf(stderr, "failed to create signalfd\n"); |
| 419 | return -errno; |
| 420 | } |
| 421 | |
| 422 | fcntl_setfl(sigfd, O_NONBLOCK); |
| 423 | |
| 424 | qemu_set_fd_handler2(sigfd, NULL, sigfd_handler, NULL, |
Stefan Weil | e0efb99 | 2011-02-23 19:09:16 +0100 | [diff] [blame] | 425 | (void *)(intptr_t)sigfd); |
Marcelo Tosatti | a8486bc | 2010-10-11 15:31:16 -0300 | [diff] [blame] | 426 | |
| 427 | return 0; |
| 428 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 429 | |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 430 | static void qemu_kvm_init_cpu_signals(CPUState *env) |
| 431 | { |
| 432 | int r; |
| 433 | sigset_t set; |
| 434 | struct sigaction sigact; |
| 435 | |
| 436 | memset(&sigact, 0, sizeof(sigact)); |
| 437 | sigact.sa_handler = dummy_signal; |
| 438 | sigaction(SIG_IPI, &sigact, NULL); |
| 439 | |
| 440 | #ifdef CONFIG_IOTHREAD |
| 441 | pthread_sigmask(SIG_BLOCK, NULL, &set); |
| 442 | sigdelset(&set, SIG_IPI); |
| 443 | sigdelset(&set, SIGBUS); |
| 444 | r = kvm_set_signal_mask(env, &set); |
| 445 | if (r) { |
| 446 | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r)); |
| 447 | exit(1); |
| 448 | } |
| 449 | #else |
| 450 | sigemptyset(&set); |
| 451 | sigaddset(&set, SIG_IPI); |
| 452 | sigaddset(&set, SIGIO); |
| 453 | sigaddset(&set, SIGALRM); |
| 454 | pthread_sigmask(SIG_BLOCK, &set, NULL); |
| 455 | |
| 456 | pthread_sigmask(SIG_BLOCK, NULL, &set); |
| 457 | sigdelset(&set, SIGIO); |
| 458 | sigdelset(&set, SIGALRM); |
| 459 | #endif |
| 460 | sigdelset(&set, SIG_IPI); |
| 461 | sigdelset(&set, SIGBUS); |
| 462 | r = kvm_set_signal_mask(env, &set); |
| 463 | if (r) { |
| 464 | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r)); |
| 465 | exit(1); |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | static void qemu_tcg_init_cpu_signals(void) |
| 470 | { |
| 471 | #ifdef CONFIG_IOTHREAD |
| 472 | sigset_t set; |
| 473 | struct sigaction sigact; |
| 474 | |
| 475 | memset(&sigact, 0, sizeof(sigact)); |
| 476 | sigact.sa_handler = cpu_signal; |
| 477 | sigaction(SIG_IPI, &sigact, NULL); |
| 478 | |
| 479 | sigemptyset(&set); |
| 480 | sigaddset(&set, SIG_IPI); |
| 481 | pthread_sigmask(SIG_UNBLOCK, &set, NULL); |
| 482 | #endif |
| 483 | } |
| 484 | |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 485 | #else /* _WIN32 */ |
| 486 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 487 | HANDLE qemu_event_handle; |
| 488 | |
| 489 | static void dummy_event_handler(void *opaque) |
| 490 | { |
| 491 | } |
| 492 | |
| 493 | static int qemu_event_init(void) |
| 494 | { |
| 495 | qemu_event_handle = CreateEvent(NULL, FALSE, FALSE, NULL); |
| 496 | if (!qemu_event_handle) { |
| 497 | fprintf(stderr, "Failed CreateEvent: %ld\n", GetLastError()); |
| 498 | return -1; |
| 499 | } |
| 500 | qemu_add_wait_object(qemu_event_handle, dummy_event_handler, NULL); |
| 501 | return 0; |
| 502 | } |
| 503 | |
| 504 | static void qemu_event_increment(void) |
| 505 | { |
| 506 | if (!SetEvent(qemu_event_handle)) { |
| 507 | fprintf(stderr, "qemu_event_increment: SetEvent failed: %ld\n", |
| 508 | GetLastError()); |
| 509 | exit (1); |
| 510 | } |
| 511 | } |
Jan Kiszka | 9a36085 | 2011-02-01 22:15:55 +0100 | [diff] [blame] | 512 | |
Paolo Bonzini | 712ae48 | 2011-03-12 17:44:05 +0100 | [diff] [blame] | 513 | static int qemu_signal_init(void) |
| 514 | { |
| 515 | return 0; |
| 516 | } |
| 517 | |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 518 | static void qemu_kvm_init_cpu_signals(CPUState *env) |
| 519 | { |
| 520 | abort(); |
| 521 | } |
| 522 | |
| 523 | static void qemu_tcg_init_cpu_signals(void) |
| 524 | { |
| 525 | } |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 526 | #endif /* _WIN32 */ |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 527 | |
| 528 | #ifndef CONFIG_IOTHREAD |
| 529 | int qemu_init_main_loop(void) |
| 530 | { |
Jan Kiszka | d0f294c | 2011-02-01 22:15:56 +0100 | [diff] [blame] | 531 | int ret; |
| 532 | |
Paolo Bonzini | 712ae48 | 2011-03-12 17:44:05 +0100 | [diff] [blame] | 533 | ret = qemu_signal_init(); |
Jan Kiszka | d0f294c | 2011-02-01 22:15:56 +0100 | [diff] [blame] | 534 | if (ret) { |
| 535 | return ret; |
| 536 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 537 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 538 | qemu_init_sigbus(); |
| 539 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 540 | return qemu_event_init(); |
| 541 | } |
| 542 | |
| 543 | void qemu_main_loop_start(void) |
| 544 | { |
| 545 | } |
| 546 | |
| 547 | void qemu_init_vcpu(void *_env) |
| 548 | { |
| 549 | CPUState *env = _env; |
Jan Kiszka | 84b4915 | 2011-02-01 22:15:50 +0100 | [diff] [blame] | 550 | int r; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 551 | |
| 552 | env->nr_cores = smp_cores; |
| 553 | env->nr_threads = smp_threads; |
Jan Kiszka | 84b4915 | 2011-02-01 22:15:50 +0100 | [diff] [blame] | 554 | |
| 555 | if (kvm_enabled()) { |
| 556 | r = kvm_init_vcpu(env); |
| 557 | if (r < 0) { |
| 558 | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r)); |
| 559 | exit(1); |
| 560 | } |
Jan Kiszka | ff48eb5 | 2011-02-01 22:15:53 +0100 | [diff] [blame] | 561 | qemu_kvm_init_cpu_signals(env); |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 562 | } else { |
| 563 | qemu_tcg_init_cpu_signals(); |
Jan Kiszka | 84b4915 | 2011-02-01 22:15:50 +0100 | [diff] [blame] | 564 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 565 | } |
| 566 | |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 567 | int qemu_cpu_is_self(void *env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 568 | { |
| 569 | return 1; |
| 570 | } |
| 571 | |
| 572 | void run_on_cpu(CPUState *env, void (*func)(void *data), void *data) |
| 573 | { |
| 574 | func(data); |
| 575 | } |
| 576 | |
| 577 | void resume_all_vcpus(void) |
| 578 | { |
| 579 | } |
| 580 | |
| 581 | void pause_all_vcpus(void) |
| 582 | { |
| 583 | } |
| 584 | |
| 585 | void qemu_cpu_kick(void *env) |
| 586 | { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 587 | } |
| 588 | |
Jan Kiszka | 46d62fa | 2011-02-01 22:15:59 +0100 | [diff] [blame] | 589 | void qemu_cpu_kick_self(void) |
| 590 | { |
| 591 | #ifndef _WIN32 |
| 592 | assert(cpu_single_env); |
| 593 | |
| 594 | raise(SIG_IPI); |
| 595 | #else |
| 596 | abort(); |
| 597 | #endif |
| 598 | } |
| 599 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 600 | void qemu_notify_event(void) |
| 601 | { |
| 602 | CPUState *env = cpu_single_env; |
| 603 | |
| 604 | qemu_event_increment (); |
| 605 | if (env) { |
| 606 | cpu_exit(env); |
| 607 | } |
| 608 | if (next_cpu && env != next_cpu) { |
| 609 | cpu_exit(next_cpu); |
| 610 | } |
Jan Kiszka | 38145df | 2011-02-01 22:15:45 +0100 | [diff] [blame] | 611 | exit_request = 1; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 612 | } |
| 613 | |
| 614 | void qemu_mutex_lock_iothread(void) {} |
| 615 | void qemu_mutex_unlock_iothread(void) {} |
| 616 | |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 617 | void cpu_stop_current(void) |
| 618 | { |
| 619 | } |
| 620 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 621 | void vm_stop(int reason) |
| 622 | { |
| 623 | do_vm_stop(reason); |
| 624 | } |
| 625 | |
| 626 | #else /* CONFIG_IOTHREAD */ |
| 627 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 628 | QemuMutex qemu_global_mutex; |
| 629 | static QemuMutex qemu_fair_mutex; |
| 630 | |
| 631 | static QemuThread io_thread; |
| 632 | |
| 633 | static QemuThread *tcg_cpu_thread; |
| 634 | static QemuCond *tcg_halt_cond; |
| 635 | |
| 636 | static int qemu_system_ready; |
| 637 | /* cpu creation */ |
| 638 | static QemuCond qemu_cpu_cond; |
| 639 | /* system init */ |
| 640 | static QemuCond qemu_system_cond; |
| 641 | static QemuCond qemu_pause_cond; |
| 642 | static QemuCond qemu_work_cond; |
| 643 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 644 | int qemu_init_main_loop(void) |
| 645 | { |
| 646 | int ret; |
| 647 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 648 | qemu_init_sigbus(); |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 649 | |
Paolo Bonzini | 712ae48 | 2011-03-12 17:44:05 +0100 | [diff] [blame] | 650 | ret = qemu_signal_init(); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 651 | if (ret) { |
Marcelo Tosatti | a8486bc | 2010-10-11 15:31:16 -0300 | [diff] [blame] | 652 | return ret; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 653 | } |
Marcelo Tosatti | a8486bc | 2010-10-11 15:31:16 -0300 | [diff] [blame] | 654 | |
| 655 | /* Note eventfd must be drained before signalfd handlers run */ |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 656 | ret = qemu_event_init(); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 657 | if (ret) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 658 | return ret; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 659 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 660 | |
Anthony Liguori | ed94592 | 2011-02-08 18:18:18 +0100 | [diff] [blame] | 661 | qemu_cond_init(&qemu_cpu_cond); |
Jan Kiszka | f8ca7b4 | 2010-06-25 16:56:51 +0200 | [diff] [blame] | 662 | qemu_cond_init(&qemu_system_cond); |
Anthony Liguori | ed94592 | 2011-02-08 18:18:18 +0100 | [diff] [blame] | 663 | qemu_cond_init(&qemu_pause_cond); |
| 664 | qemu_cond_init(&qemu_work_cond); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 665 | qemu_mutex_init(&qemu_fair_mutex); |
| 666 | qemu_mutex_init(&qemu_global_mutex); |
| 667 | qemu_mutex_lock(&qemu_global_mutex); |
| 668 | |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 669 | qemu_thread_get_self(&io_thread); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 670 | |
| 671 | return 0; |
| 672 | } |
| 673 | |
Blue Swirl | 7277e02 | 2010-04-12 17:19:06 +0000 | [diff] [blame] | 674 | void qemu_main_loop_start(void) |
| 675 | { |
| 676 | qemu_system_ready = 1; |
| 677 | qemu_cond_broadcast(&qemu_system_cond); |
| 678 | } |
| 679 | |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 680 | void run_on_cpu(CPUState *env, void (*func)(void *data), void *data) |
| 681 | { |
| 682 | struct qemu_work_item wi; |
| 683 | |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 684 | if (qemu_cpu_is_self(env)) { |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 685 | func(data); |
| 686 | return; |
| 687 | } |
| 688 | |
| 689 | wi.func = func; |
| 690 | wi.data = data; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 691 | if (!env->queued_work_first) { |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 692 | env->queued_work_first = &wi; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 693 | } else { |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 694 | env->queued_work_last->next = &wi; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 695 | } |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 696 | env->queued_work_last = &wi; |
| 697 | wi.next = NULL; |
| 698 | wi.done = false; |
| 699 | |
| 700 | qemu_cpu_kick(env); |
| 701 | while (!wi.done) { |
| 702 | CPUState *self_env = cpu_single_env; |
| 703 | |
| 704 | qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex); |
| 705 | cpu_single_env = self_env; |
| 706 | } |
| 707 | } |
| 708 | |
| 709 | static void flush_queued_work(CPUState *env) |
| 710 | { |
| 711 | struct qemu_work_item *wi; |
| 712 | |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 713 | if (!env->queued_work_first) { |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 714 | return; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 715 | } |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 716 | |
| 717 | while ((wi = env->queued_work_first)) { |
| 718 | env->queued_work_first = wi->next; |
| 719 | wi->func(wi->data); |
| 720 | wi->done = true; |
| 721 | } |
| 722 | env->queued_work_last = NULL; |
| 723 | qemu_cond_broadcast(&qemu_work_cond); |
| 724 | } |
| 725 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 726 | static void qemu_wait_io_event_common(CPUState *env) |
| 727 | { |
| 728 | if (env->stop) { |
| 729 | env->stop = 0; |
| 730 | env->stopped = 1; |
| 731 | qemu_cond_signal(&qemu_pause_cond); |
| 732 | } |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 733 | flush_queued_work(env); |
Jan Kiszka | aa2c364 | 2011-02-01 22:15:42 +0100 | [diff] [blame] | 734 | env->thread_kicked = false; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 735 | } |
| 736 | |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 737 | static void qemu_tcg_wait_io_event(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 738 | { |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 739 | CPUState *env; |
| 740 | |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 741 | while (all_cpu_threads_idle()) { |
Paolo Bonzini | 9705fbb | 2011-03-12 17:44:00 +0100 | [diff] [blame] | 742 | qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 743 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 744 | |
| 745 | qemu_mutex_unlock(&qemu_global_mutex); |
| 746 | |
| 747 | /* |
| 748 | * Users of qemu_global_mutex can be starved, having no chance |
| 749 | * to acquire it since this path will get to it first. |
| 750 | * So use another lock to provide fairness. |
| 751 | */ |
| 752 | qemu_mutex_lock(&qemu_fair_mutex); |
| 753 | qemu_mutex_unlock(&qemu_fair_mutex); |
| 754 | |
| 755 | qemu_mutex_lock(&qemu_global_mutex); |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 756 | |
| 757 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 758 | qemu_wait_io_event_common(env); |
| 759 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 760 | } |
| 761 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 762 | static void qemu_kvm_wait_io_event(CPUState *env) |
| 763 | { |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 764 | while (cpu_thread_is_idle(env)) { |
Paolo Bonzini | 9705fbb | 2011-03-12 17:44:00 +0100 | [diff] [blame] | 765 | qemu_cond_wait(env->halt_cond, &qemu_global_mutex); |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 766 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 767 | |
Jan Kiszka | 5db5bda | 2011-02-01 22:15:54 +0100 | [diff] [blame] | 768 | qemu_kvm_eat_signals(env); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 769 | qemu_wait_io_event_common(env); |
| 770 | } |
| 771 | |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 772 | static void *qemu_kvm_cpu_thread_fn(void *arg) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 773 | { |
| 774 | CPUState *env = arg; |
Jan Kiszka | 84b4915 | 2011-02-01 22:15:50 +0100 | [diff] [blame] | 775 | int r; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 776 | |
Marcelo Tosatti | 6164e6d | 2010-03-23 13:37:13 -0300 | [diff] [blame] | 777 | qemu_mutex_lock(&qemu_global_mutex); |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 778 | qemu_thread_get_self(env->thread); |
Jan Kiszka | dc7a09c | 2011-03-15 12:26:31 +0100 | [diff] [blame] | 779 | env->thread_id = qemu_get_thread_id(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 780 | |
Jan Kiszka | 84b4915 | 2011-02-01 22:15:50 +0100 | [diff] [blame] | 781 | r = kvm_init_vcpu(env); |
| 782 | if (r < 0) { |
| 783 | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r)); |
| 784 | exit(1); |
| 785 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 786 | |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 787 | qemu_kvm_init_cpu_signals(env); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 788 | |
| 789 | /* signal CPU creation */ |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 790 | env->created = 1; |
| 791 | qemu_cond_signal(&qemu_cpu_cond); |
| 792 | |
| 793 | /* and wait for machine initialization */ |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 794 | while (!qemu_system_ready) { |
Paolo Bonzini | e009894 | 2011-03-12 17:44:01 +0100 | [diff] [blame] | 795 | qemu_cond_wait(&qemu_system_cond, &qemu_global_mutex); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 796 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 797 | |
| 798 | while (1) { |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 799 | if (cpu_can_run(env)) { |
Jan Kiszka | 6792a57 | 2011-02-07 12:19:18 +0100 | [diff] [blame] | 800 | r = kvm_cpu_exec(env); |
Jan Kiszka | 83f338f | 2011-02-07 12:19:17 +0100 | [diff] [blame] | 801 | if (r == EXCP_DEBUG) { |
Jan Kiszka | 1009d2e | 2011-03-15 12:26:13 +0100 | [diff] [blame] | 802 | cpu_handle_guest_debug(env); |
Jan Kiszka | 83f338f | 2011-02-07 12:19:17 +0100 | [diff] [blame] | 803 | } |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 804 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 805 | qemu_kvm_wait_io_event(env); |
| 806 | } |
| 807 | |
| 808 | return NULL; |
| 809 | } |
| 810 | |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 811 | static void *qemu_tcg_cpu_thread_fn(void *arg) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 812 | { |
| 813 | CPUState *env = arg; |
| 814 | |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 815 | qemu_tcg_init_cpu_signals(); |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 816 | qemu_thread_get_self(env->thread); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 817 | |
| 818 | /* signal CPU creation */ |
| 819 | qemu_mutex_lock(&qemu_global_mutex); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 820 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
Jan Kiszka | dc7a09c | 2011-03-15 12:26:31 +0100 | [diff] [blame] | 821 | env->thread_id = qemu_get_thread_id(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 822 | env->created = 1; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 823 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 824 | qemu_cond_signal(&qemu_cpu_cond); |
| 825 | |
| 826 | /* and wait for machine initialization */ |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 827 | while (!qemu_system_ready) { |
Paolo Bonzini | e009894 | 2011-03-12 17:44:01 +0100 | [diff] [blame] | 828 | qemu_cond_wait(&qemu_system_cond, &qemu_global_mutex); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 829 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 830 | |
| 831 | while (1) { |
Jan Kiszka | 472fb0c | 2010-06-25 16:56:55 +0200 | [diff] [blame] | 832 | cpu_exec_all(); |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 833 | qemu_tcg_wait_io_event(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 834 | } |
| 835 | |
| 836 | return NULL; |
| 837 | } |
| 838 | |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 839 | static void qemu_cpu_kick_thread(CPUState *env) |
| 840 | { |
| 841 | #ifndef _WIN32 |
| 842 | int err; |
| 843 | |
| 844 | err = pthread_kill(env->thread->thread, SIG_IPI); |
| 845 | if (err) { |
| 846 | fprintf(stderr, "qemu:%s: %s", __func__, strerror(err)); |
| 847 | exit(1); |
| 848 | } |
| 849 | #else /* _WIN32 */ |
| 850 | if (!qemu_cpu_is_self(env)) { |
| 851 | SuspendThread(env->thread->thread); |
| 852 | cpu_signal(0); |
| 853 | ResumeThread(env->thread->thread); |
| 854 | } |
| 855 | #endif |
| 856 | } |
| 857 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 858 | void qemu_cpu_kick(void *_env) |
| 859 | { |
| 860 | CPUState *env = _env; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 861 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 862 | qemu_cond_broadcast(env->halt_cond); |
Jan Kiszka | aa2c364 | 2011-02-01 22:15:42 +0100 | [diff] [blame] | 863 | if (!env->thread_kicked) { |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 864 | qemu_cpu_kick_thread(env); |
Jan Kiszka | aa2c364 | 2011-02-01 22:15:42 +0100 | [diff] [blame] | 865 | env->thread_kicked = true; |
| 866 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 867 | } |
| 868 | |
Jan Kiszka | 46d62fa | 2011-02-01 22:15:59 +0100 | [diff] [blame] | 869 | void qemu_cpu_kick_self(void) |
| 870 | { |
Paolo Bonzini | b55c22c | 2011-03-12 17:44:07 +0100 | [diff] [blame] | 871 | #ifndef _WIN32 |
Jan Kiszka | 46d62fa | 2011-02-01 22:15:59 +0100 | [diff] [blame] | 872 | assert(cpu_single_env); |
| 873 | |
| 874 | if (!cpu_single_env->thread_kicked) { |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 875 | qemu_cpu_kick_thread(cpu_single_env); |
Jan Kiszka | 46d62fa | 2011-02-01 22:15:59 +0100 | [diff] [blame] | 876 | cpu_single_env->thread_kicked = true; |
| 877 | } |
Paolo Bonzini | b55c22c | 2011-03-12 17:44:07 +0100 | [diff] [blame] | 878 | #else |
| 879 | abort(); |
| 880 | #endif |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 881 | } |
| 882 | |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 883 | int qemu_cpu_is_self(void *_env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 884 | { |
| 885 | CPUState *env = _env; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 886 | |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 887 | return qemu_thread_is_self(env->thread); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 888 | } |
| 889 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 890 | void qemu_mutex_lock_iothread(void) |
| 891 | { |
| 892 | if (kvm_enabled()) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 893 | qemu_mutex_lock(&qemu_global_mutex); |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 894 | } else { |
| 895 | qemu_mutex_lock(&qemu_fair_mutex); |
| 896 | if (qemu_mutex_trylock(&qemu_global_mutex)) { |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 897 | qemu_cpu_kick_thread(first_cpu); |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 898 | qemu_mutex_lock(&qemu_global_mutex); |
| 899 | } |
| 900 | qemu_mutex_unlock(&qemu_fair_mutex); |
| 901 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 902 | } |
| 903 | |
| 904 | void qemu_mutex_unlock_iothread(void) |
| 905 | { |
| 906 | qemu_mutex_unlock(&qemu_global_mutex); |
| 907 | } |
| 908 | |
| 909 | static int all_vcpus_paused(void) |
| 910 | { |
| 911 | CPUState *penv = first_cpu; |
| 912 | |
| 913 | while (penv) { |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 914 | if (!penv->stopped) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 915 | return 0; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 916 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 917 | penv = (CPUState *)penv->next_cpu; |
| 918 | } |
| 919 | |
| 920 | return 1; |
| 921 | } |
| 922 | |
| 923 | void pause_all_vcpus(void) |
| 924 | { |
| 925 | CPUState *penv = first_cpu; |
| 926 | |
| 927 | while (penv) { |
| 928 | penv->stop = 1; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 929 | qemu_cpu_kick(penv); |
| 930 | penv = (CPUState *)penv->next_cpu; |
| 931 | } |
| 932 | |
| 933 | while (!all_vcpus_paused()) { |
Paolo Bonzini | be7d6c5 | 2011-03-12 17:44:02 +0100 | [diff] [blame] | 934 | qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 935 | penv = first_cpu; |
| 936 | while (penv) { |
Marcelo Tosatti | 1fbb22e | 2010-05-04 09:45:21 -0300 | [diff] [blame] | 937 | qemu_cpu_kick(penv); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 938 | penv = (CPUState *)penv->next_cpu; |
| 939 | } |
| 940 | } |
| 941 | } |
| 942 | |
| 943 | void resume_all_vcpus(void) |
| 944 | { |
| 945 | CPUState *penv = first_cpu; |
| 946 | |
| 947 | while (penv) { |
| 948 | penv->stop = 0; |
| 949 | penv->stopped = 0; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 950 | qemu_cpu_kick(penv); |
| 951 | penv = (CPUState *)penv->next_cpu; |
| 952 | } |
| 953 | } |
| 954 | |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 955 | static void qemu_tcg_init_vcpu(void *_env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 956 | { |
| 957 | CPUState *env = _env; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 958 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 959 | /* share a single thread for all cpus with TCG */ |
| 960 | if (!tcg_cpu_thread) { |
| 961 | env->thread = qemu_mallocz(sizeof(QemuThread)); |
| 962 | env->halt_cond = qemu_mallocz(sizeof(QemuCond)); |
| 963 | qemu_cond_init(env->halt_cond); |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 964 | qemu_thread_create(env->thread, qemu_tcg_cpu_thread_fn, env); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 965 | while (env->created == 0) { |
Paolo Bonzini | 18a8572 | 2011-03-12 17:44:03 +0100 | [diff] [blame] | 966 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 967 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 968 | tcg_cpu_thread = env->thread; |
| 969 | tcg_halt_cond = env->halt_cond; |
| 970 | } else { |
| 971 | env->thread = tcg_cpu_thread; |
| 972 | env->halt_cond = tcg_halt_cond; |
| 973 | } |
| 974 | } |
| 975 | |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 976 | static void qemu_kvm_start_vcpu(CPUState *env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 977 | { |
| 978 | env->thread = qemu_mallocz(sizeof(QemuThread)); |
| 979 | env->halt_cond = qemu_mallocz(sizeof(QemuCond)); |
| 980 | qemu_cond_init(env->halt_cond); |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 981 | qemu_thread_create(env->thread, qemu_kvm_cpu_thread_fn, env); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 982 | while (env->created == 0) { |
Paolo Bonzini | 18a8572 | 2011-03-12 17:44:03 +0100 | [diff] [blame] | 983 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 984 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 985 | } |
| 986 | |
| 987 | void qemu_init_vcpu(void *_env) |
| 988 | { |
| 989 | CPUState *env = _env; |
| 990 | |
| 991 | env->nr_cores = smp_cores; |
| 992 | env->nr_threads = smp_threads; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 993 | if (kvm_enabled()) { |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 994 | qemu_kvm_start_vcpu(env); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 995 | } else { |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 996 | qemu_tcg_init_vcpu(env); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 997 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 998 | } |
| 999 | |
| 1000 | void qemu_notify_event(void) |
| 1001 | { |
| 1002 | qemu_event_increment(); |
| 1003 | } |
| 1004 | |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1005 | void cpu_stop_current(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1006 | { |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1007 | if (cpu_single_env) { |
Paolo Bonzini | 67bb172 | 2011-03-12 17:43:59 +0100 | [diff] [blame] | 1008 | cpu_single_env->stop = 0; |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1009 | cpu_single_env->stopped = 1; |
| 1010 | cpu_exit(cpu_single_env); |
Paolo Bonzini | 67bb172 | 2011-03-12 17:43:59 +0100 | [diff] [blame] | 1011 | qemu_cond_signal(&qemu_pause_cond); |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1012 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1013 | } |
| 1014 | |
| 1015 | void vm_stop(int reason) |
| 1016 | { |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 1017 | if (!qemu_thread_is_self(&io_thread)) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1018 | qemu_system_vmstop_request(reason); |
| 1019 | /* |
| 1020 | * FIXME: should not return to device code in case |
| 1021 | * vm_stop() has been requested. |
| 1022 | */ |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1023 | cpu_stop_current(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1024 | return; |
| 1025 | } |
| 1026 | do_vm_stop(reason); |
| 1027 | } |
| 1028 | |
| 1029 | #endif |
| 1030 | |
Jan Kiszka | 6792a57 | 2011-02-07 12:19:18 +0100 | [diff] [blame] | 1031 | static int tcg_cpu_exec(CPUState *env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1032 | { |
| 1033 | int ret; |
| 1034 | #ifdef CONFIG_PROFILER |
| 1035 | int64_t ti; |
| 1036 | #endif |
| 1037 | |
| 1038 | #ifdef CONFIG_PROFILER |
| 1039 | ti = profile_getclock(); |
| 1040 | #endif |
| 1041 | if (use_icount) { |
| 1042 | int64_t count; |
| 1043 | int decr; |
| 1044 | qemu_icount -= (env->icount_decr.u16.low + env->icount_extra); |
| 1045 | env->icount_decr.u16.low = 0; |
| 1046 | env->icount_extra = 0; |
| 1047 | count = qemu_icount_round (qemu_next_deadline()); |
| 1048 | qemu_icount += count; |
| 1049 | decr = (count > 0xffff) ? 0xffff : count; |
| 1050 | count -= decr; |
| 1051 | env->icount_decr.u16.low = decr; |
| 1052 | env->icount_extra = count; |
| 1053 | } |
| 1054 | ret = cpu_exec(env); |
| 1055 | #ifdef CONFIG_PROFILER |
| 1056 | qemu_time += profile_getclock() - ti; |
| 1057 | #endif |
| 1058 | if (use_icount) { |
| 1059 | /* Fold pending instructions back into the |
| 1060 | instruction counter, and clear the interrupt flag. */ |
| 1061 | qemu_icount -= (env->icount_decr.u16.low |
| 1062 | + env->icount_extra); |
| 1063 | env->icount_decr.u32 = 0; |
| 1064 | env->icount_extra = 0; |
| 1065 | } |
| 1066 | return ret; |
| 1067 | } |
| 1068 | |
Jan Kiszka | 472fb0c | 2010-06-25 16:56:55 +0200 | [diff] [blame] | 1069 | bool cpu_exec_all(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1070 | { |
Jan Kiszka | 9a36085 | 2011-02-01 22:15:55 +0100 | [diff] [blame] | 1071 | int r; |
| 1072 | |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1073 | if (next_cpu == NULL) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1074 | next_cpu = first_cpu; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1075 | } |
Jan Kiszka | c629a4b | 2010-06-25 16:56:52 +0200 | [diff] [blame] | 1076 | for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu) { |
Jan Kiszka | 345f442 | 2010-06-25 16:56:54 +0200 | [diff] [blame] | 1077 | CPUState *env = next_cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1078 | |
| 1079 | qemu_clock_enable(vm_clock, |
Jan Kiszka | 345f442 | 2010-06-25 16:56:54 +0200 | [diff] [blame] | 1080 | (env->singlestep_enabled & SSTEP_NOTIMER) == 0); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1081 | |
Paolo Bonzini | 8cf3f22 | 2011-03-12 17:44:04 +0100 | [diff] [blame] | 1082 | #ifndef CONFIG_IOTHREAD |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1083 | if (qemu_alarm_pending()) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1084 | break; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1085 | } |
Paolo Bonzini | 8cf3f22 | 2011-03-12 17:44:04 +0100 | [diff] [blame] | 1086 | #endif |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 1087 | if (cpu_can_run(env)) { |
Jan Kiszka | 9a36085 | 2011-02-01 22:15:55 +0100 | [diff] [blame] | 1088 | if (kvm_enabled()) { |
Jan Kiszka | 6792a57 | 2011-02-07 12:19:18 +0100 | [diff] [blame] | 1089 | r = kvm_cpu_exec(env); |
Jan Kiszka | 9a36085 | 2011-02-01 22:15:55 +0100 | [diff] [blame] | 1090 | qemu_kvm_eat_signals(env); |
Jan Kiszka | 6792a57 | 2011-02-07 12:19:18 +0100 | [diff] [blame] | 1091 | } else { |
| 1092 | r = tcg_cpu_exec(env); |
Jan Kiszka | 9a36085 | 2011-02-01 22:15:55 +0100 | [diff] [blame] | 1093 | } |
| 1094 | if (r == EXCP_DEBUG) { |
Jan Kiszka | 1009d2e | 2011-03-15 12:26:13 +0100 | [diff] [blame] | 1095 | cpu_handle_guest_debug(env); |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 1096 | break; |
| 1097 | } |
Paolo Bonzini | df646df | 2011-03-12 17:43:58 +0100 | [diff] [blame] | 1098 | } else if (env->stop || env->stopped) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1099 | break; |
| 1100 | } |
| 1101 | } |
Jan Kiszka | c629a4b | 2010-06-25 16:56:52 +0200 | [diff] [blame] | 1102 | exit_request = 0; |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 1103 | return !all_cpu_threads_idle(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1104 | } |
| 1105 | |
| 1106 | void set_numa_modes(void) |
| 1107 | { |
| 1108 | CPUState *env; |
| 1109 | int i; |
| 1110 | |
| 1111 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1112 | for (i = 0; i < nb_numa_nodes; i++) { |
| 1113 | if (node_cpumask[i] & (1 << env->cpu_index)) { |
| 1114 | env->numa_node = i; |
| 1115 | } |
| 1116 | } |
| 1117 | } |
| 1118 | } |
| 1119 | |
| 1120 | void set_cpu_log(const char *optarg) |
| 1121 | { |
| 1122 | int mask; |
| 1123 | const CPULogItem *item; |
| 1124 | |
| 1125 | mask = cpu_str_to_log_mask(optarg); |
| 1126 | if (!mask) { |
| 1127 | printf("Log items (comma separated):\n"); |
| 1128 | for (item = cpu_log_items; item->mask != 0; item++) { |
| 1129 | printf("%-10s %s\n", item->name, item->help); |
| 1130 | } |
| 1131 | exit(1); |
| 1132 | } |
| 1133 | cpu_set_log(mask); |
| 1134 | } |
Blue Swirl | 29e922b | 2010-03-29 19:24:00 +0000 | [diff] [blame] | 1135 | |
| 1136 | /* Return the virtual CPU time, based on the instruction counter. */ |
| 1137 | int64_t cpu_get_icount(void) |
| 1138 | { |
| 1139 | int64_t icount; |
| 1140 | CPUState *env = cpu_single_env;; |
| 1141 | |
| 1142 | icount = qemu_icount; |
| 1143 | if (env) { |
| 1144 | if (!can_do_io(env)) { |
| 1145 | fprintf(stderr, "Bad clock read\n"); |
| 1146 | } |
| 1147 | icount -= (env->icount_decr.u16.low + env->icount_extra); |
| 1148 | } |
| 1149 | return qemu_icount_bias + (icount << icount_time_shift); |
| 1150 | } |
Blue Swirl | 262353c | 2010-05-04 19:55:35 +0000 | [diff] [blame] | 1151 | |
Stefan Weil | 9a78eea | 2010-10-22 23:03:33 +0200 | [diff] [blame] | 1152 | void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg) |
Blue Swirl | 262353c | 2010-05-04 19:55:35 +0000 | [diff] [blame] | 1153 | { |
| 1154 | /* XXX: implement xxx_cpu_list for targets that still miss it */ |
| 1155 | #if defined(cpu_list_id) |
| 1156 | cpu_list_id(f, cpu_fprintf, optarg); |
| 1157 | #elif defined(cpu_list) |
| 1158 | cpu_list(f, cpu_fprintf); /* deprecated */ |
| 1159 | #endif |
| 1160 | } |