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" |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 33 | #include "qmp-commands.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" |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 37 | #include "qtest.h" |
Paolo Bonzini | 44a9b35 | 2011-09-12 16:44:30 +0200 | [diff] [blame] | 38 | #include "main-loop.h" |
Jan Kiszka | 0ff0fc1 | 2011-06-23 10:15:55 +0200 | [diff] [blame] | 39 | |
| 40 | #ifndef _WIN32 |
Marcelo Tosatti | a8486bc | 2010-10-11 15:31:16 -0300 | [diff] [blame] | 41 | #include "compatfd.h" |
Jan Kiszka | 0ff0fc1 | 2011-06-23 10:15:55 +0200 | [diff] [blame] | 42 | #endif |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 43 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 44 | #ifdef CONFIG_LINUX |
| 45 | |
| 46 | #include <sys/prctl.h> |
| 47 | |
Marcelo Tosatti | c0532a7 | 2010-10-11 15:31:21 -0300 | [diff] [blame] | 48 | #ifndef PR_MCE_KILL |
| 49 | #define PR_MCE_KILL 33 |
| 50 | #endif |
| 51 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 52 | #ifndef PR_MCE_KILL_SET |
| 53 | #define PR_MCE_KILL_SET 1 |
| 54 | #endif |
| 55 | |
| 56 | #ifndef PR_MCE_KILL_EARLY |
| 57 | #define PR_MCE_KILL_EARLY 1 |
| 58 | #endif |
| 59 | |
| 60 | #endif /* CONFIG_LINUX */ |
| 61 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 62 | static CPUArchState *next_cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 63 | |
| 64 | /***********************************************************/ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 65 | /* guest cycle counter */ |
| 66 | |
| 67 | /* Conversion factor from emulated instructions to virtual clock ticks. */ |
| 68 | static int icount_time_shift; |
| 69 | /* Arbitrarily pick 1MIPS as the minimum allowable speed. */ |
| 70 | #define MAX_ICOUNT_SHIFT 10 |
| 71 | /* Compensate for varying guest execution speed. */ |
| 72 | static int64_t qemu_icount_bias; |
| 73 | static QEMUTimer *icount_rt_timer; |
| 74 | static QEMUTimer *icount_vm_timer; |
| 75 | static QEMUTimer *icount_warp_timer; |
| 76 | static int64_t vm_clock_warp_start; |
| 77 | static int64_t qemu_icount; |
| 78 | |
| 79 | typedef struct TimersState { |
| 80 | int64_t cpu_ticks_prev; |
| 81 | int64_t cpu_ticks_offset; |
| 82 | int64_t cpu_clock_offset; |
| 83 | int32_t cpu_ticks_enabled; |
| 84 | int64_t dummy; |
| 85 | } TimersState; |
| 86 | |
| 87 | TimersState timers_state; |
| 88 | |
| 89 | /* Return the virtual CPU time, based on the instruction counter. */ |
| 90 | int64_t cpu_get_icount(void) |
| 91 | { |
| 92 | int64_t icount; |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 93 | CPUArchState *env = cpu_single_env; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 94 | |
| 95 | icount = qemu_icount; |
| 96 | if (env) { |
| 97 | if (!can_do_io(env)) { |
| 98 | fprintf(stderr, "Bad clock read\n"); |
| 99 | } |
| 100 | icount -= (env->icount_decr.u16.low + env->icount_extra); |
| 101 | } |
| 102 | return qemu_icount_bias + (icount << icount_time_shift); |
| 103 | } |
| 104 | |
| 105 | /* return the host CPU cycle counter and handle stop/restart */ |
| 106 | int64_t cpu_get_ticks(void) |
| 107 | { |
| 108 | if (use_icount) { |
| 109 | return cpu_get_icount(); |
| 110 | } |
| 111 | if (!timers_state.cpu_ticks_enabled) { |
| 112 | return timers_state.cpu_ticks_offset; |
| 113 | } else { |
| 114 | int64_t ticks; |
| 115 | ticks = cpu_get_real_ticks(); |
| 116 | if (timers_state.cpu_ticks_prev > ticks) { |
| 117 | /* Note: non increasing ticks may happen if the host uses |
| 118 | software suspend */ |
| 119 | timers_state.cpu_ticks_offset += timers_state.cpu_ticks_prev - ticks; |
| 120 | } |
| 121 | timers_state.cpu_ticks_prev = ticks; |
| 122 | return ticks + timers_state.cpu_ticks_offset; |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | /* return the host CPU monotonic timer and handle stop/restart */ |
| 127 | int64_t cpu_get_clock(void) |
| 128 | { |
| 129 | int64_t ti; |
| 130 | if (!timers_state.cpu_ticks_enabled) { |
| 131 | return timers_state.cpu_clock_offset; |
| 132 | } else { |
| 133 | ti = get_clock(); |
| 134 | return ti + timers_state.cpu_clock_offset; |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | /* enable cpu_get_ticks() */ |
| 139 | void cpu_enable_ticks(void) |
| 140 | { |
| 141 | if (!timers_state.cpu_ticks_enabled) { |
| 142 | timers_state.cpu_ticks_offset -= cpu_get_real_ticks(); |
| 143 | timers_state.cpu_clock_offset -= get_clock(); |
| 144 | timers_state.cpu_ticks_enabled = 1; |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | /* disable cpu_get_ticks() : the clock is stopped. You must not call |
| 149 | cpu_get_ticks() after that. */ |
| 150 | void cpu_disable_ticks(void) |
| 151 | { |
| 152 | if (timers_state.cpu_ticks_enabled) { |
| 153 | timers_state.cpu_ticks_offset = cpu_get_ticks(); |
| 154 | timers_state.cpu_clock_offset = cpu_get_clock(); |
| 155 | timers_state.cpu_ticks_enabled = 0; |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | /* Correlation between real and virtual time is always going to be |
| 160 | fairly approximate, so ignore small variation. |
| 161 | When the guest is idle real and virtual time will be aligned in |
| 162 | the IO wait loop. */ |
| 163 | #define ICOUNT_WOBBLE (get_ticks_per_sec() / 10) |
| 164 | |
| 165 | static void icount_adjust(void) |
| 166 | { |
| 167 | int64_t cur_time; |
| 168 | int64_t cur_icount; |
| 169 | int64_t delta; |
| 170 | static int64_t last_delta; |
| 171 | /* If the VM is not running, then do nothing. */ |
| 172 | if (!runstate_is_running()) { |
| 173 | return; |
| 174 | } |
| 175 | cur_time = cpu_get_clock(); |
| 176 | cur_icount = qemu_get_clock_ns(vm_clock); |
| 177 | delta = cur_icount - cur_time; |
| 178 | /* FIXME: This is a very crude algorithm, somewhat prone to oscillation. */ |
| 179 | if (delta > 0 |
| 180 | && last_delta + ICOUNT_WOBBLE < delta * 2 |
| 181 | && icount_time_shift > 0) { |
| 182 | /* The guest is getting too far ahead. Slow time down. */ |
| 183 | icount_time_shift--; |
| 184 | } |
| 185 | if (delta < 0 |
| 186 | && last_delta - ICOUNT_WOBBLE > delta * 2 |
| 187 | && icount_time_shift < MAX_ICOUNT_SHIFT) { |
| 188 | /* The guest is getting too far behind. Speed time up. */ |
| 189 | icount_time_shift++; |
| 190 | } |
| 191 | last_delta = delta; |
| 192 | qemu_icount_bias = cur_icount - (qemu_icount << icount_time_shift); |
| 193 | } |
| 194 | |
| 195 | static void icount_adjust_rt(void *opaque) |
| 196 | { |
| 197 | qemu_mod_timer(icount_rt_timer, |
| 198 | qemu_get_clock_ms(rt_clock) + 1000); |
| 199 | icount_adjust(); |
| 200 | } |
| 201 | |
| 202 | static void icount_adjust_vm(void *opaque) |
| 203 | { |
| 204 | qemu_mod_timer(icount_vm_timer, |
| 205 | qemu_get_clock_ns(vm_clock) + get_ticks_per_sec() / 10); |
| 206 | icount_adjust(); |
| 207 | } |
| 208 | |
| 209 | static int64_t qemu_icount_round(int64_t count) |
| 210 | { |
| 211 | return (count + (1 << icount_time_shift) - 1) >> icount_time_shift; |
| 212 | } |
| 213 | |
| 214 | static void icount_warp_rt(void *opaque) |
| 215 | { |
| 216 | if (vm_clock_warp_start == -1) { |
| 217 | return; |
| 218 | } |
| 219 | |
| 220 | if (runstate_is_running()) { |
| 221 | int64_t clock = qemu_get_clock_ns(rt_clock); |
| 222 | int64_t warp_delta = clock - vm_clock_warp_start; |
| 223 | if (use_icount == 1) { |
| 224 | qemu_icount_bias += warp_delta; |
| 225 | } else { |
| 226 | /* |
| 227 | * In adaptive mode, do not let the vm_clock run too |
| 228 | * far ahead of real time. |
| 229 | */ |
| 230 | int64_t cur_time = cpu_get_clock(); |
| 231 | int64_t cur_icount = qemu_get_clock_ns(vm_clock); |
| 232 | int64_t delta = cur_time - cur_icount; |
| 233 | qemu_icount_bias += MIN(warp_delta, delta); |
| 234 | } |
| 235 | if (qemu_clock_expired(vm_clock)) { |
| 236 | qemu_notify_event(); |
| 237 | } |
| 238 | } |
| 239 | vm_clock_warp_start = -1; |
| 240 | } |
| 241 | |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 242 | void qtest_clock_warp(int64_t dest) |
| 243 | { |
| 244 | int64_t clock = qemu_get_clock_ns(vm_clock); |
| 245 | assert(qtest_enabled()); |
| 246 | while (clock < dest) { |
| 247 | int64_t deadline = qemu_clock_deadline(vm_clock); |
| 248 | int64_t warp = MIN(dest - clock, deadline); |
| 249 | qemu_icount_bias += warp; |
| 250 | qemu_run_timers(vm_clock); |
| 251 | clock = qemu_get_clock_ns(vm_clock); |
| 252 | } |
| 253 | qemu_notify_event(); |
| 254 | } |
| 255 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 256 | void qemu_clock_warp(QEMUClock *clock) |
| 257 | { |
| 258 | int64_t deadline; |
| 259 | |
| 260 | /* |
| 261 | * There are too many global variables to make the "warp" behavior |
| 262 | * applicable to other clocks. But a clock argument removes the |
| 263 | * need for if statements all over the place. |
| 264 | */ |
| 265 | if (clock != vm_clock || !use_icount) { |
| 266 | return; |
| 267 | } |
| 268 | |
| 269 | /* |
| 270 | * If the CPUs have been sleeping, advance the vm_clock timer now. This |
| 271 | * ensures that the deadline for the timer is computed correctly below. |
| 272 | * This also makes sure that the insn counter is synchronized before the |
| 273 | * CPU starts running, in case the CPU is woken by an event other than |
| 274 | * the earliest vm_clock timer. |
| 275 | */ |
| 276 | icount_warp_rt(NULL); |
| 277 | if (!all_cpu_threads_idle() || !qemu_clock_has_timers(vm_clock)) { |
| 278 | qemu_del_timer(icount_warp_timer); |
| 279 | return; |
| 280 | } |
| 281 | |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 282 | if (qtest_enabled()) { |
| 283 | /* When testing, qtest commands advance icount. */ |
| 284 | return; |
| 285 | } |
| 286 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 287 | vm_clock_warp_start = qemu_get_clock_ns(rt_clock); |
| 288 | deadline = qemu_clock_deadline(vm_clock); |
| 289 | if (deadline > 0) { |
| 290 | /* |
| 291 | * Ensure the vm_clock proceeds even when the virtual CPU goes to |
| 292 | * sleep. Otherwise, the CPU might be waiting for a future timer |
| 293 | * interrupt to wake it up, but the interrupt never comes because |
| 294 | * the vCPU isn't running any insns and thus doesn't advance the |
| 295 | * vm_clock. |
| 296 | * |
| 297 | * An extreme solution for this problem would be to never let VCPUs |
| 298 | * sleep in icount mode if there is a pending vm_clock timer; rather |
| 299 | * time could just advance to the next vm_clock event. Instead, we |
| 300 | * do stop VCPUs and only advance vm_clock after some "real" time, |
| 301 | * (related to the time left until the next event) has passed. This |
| 302 | * rt_clock timer will do this. This avoids that the warps are too |
| 303 | * visible externally---for example, you will not be sending network |
Dong Xu Wang | 07f3507 | 2011-11-22 18:06:26 +0800 | [diff] [blame] | 304 | * packets continuously instead of every 100ms. |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 305 | */ |
| 306 | qemu_mod_timer(icount_warp_timer, vm_clock_warp_start + deadline); |
| 307 | } else { |
| 308 | qemu_notify_event(); |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | static const VMStateDescription vmstate_timers = { |
| 313 | .name = "timer", |
| 314 | .version_id = 2, |
| 315 | .minimum_version_id = 1, |
| 316 | .minimum_version_id_old = 1, |
| 317 | .fields = (VMStateField[]) { |
| 318 | VMSTATE_INT64(cpu_ticks_offset, TimersState), |
| 319 | VMSTATE_INT64(dummy, TimersState), |
| 320 | VMSTATE_INT64_V(cpu_clock_offset, TimersState, 2), |
| 321 | VMSTATE_END_OF_LIST() |
| 322 | } |
| 323 | }; |
| 324 | |
| 325 | void configure_icount(const char *option) |
| 326 | { |
| 327 | vmstate_register(NULL, 0, &vmstate_timers, &timers_state); |
| 328 | if (!option) { |
| 329 | return; |
| 330 | } |
| 331 | |
| 332 | icount_warp_timer = qemu_new_timer_ns(rt_clock, icount_warp_rt, NULL); |
| 333 | if (strcmp(option, "auto") != 0) { |
| 334 | icount_time_shift = strtol(option, NULL, 0); |
| 335 | use_icount = 1; |
| 336 | return; |
| 337 | } |
| 338 | |
| 339 | use_icount = 2; |
| 340 | |
| 341 | /* 125MIPS seems a reasonable initial guess at the guest speed. |
| 342 | It will be corrected fairly quickly anyway. */ |
| 343 | icount_time_shift = 3; |
| 344 | |
| 345 | /* Have both realtime and virtual time triggers for speed adjustment. |
| 346 | The realtime trigger catches emulated time passing too slowly, |
| 347 | the virtual time trigger catches emulated time passing too fast. |
| 348 | Realtime triggers occur even when idle, so use them less frequently |
| 349 | than VM triggers. */ |
| 350 | icount_rt_timer = qemu_new_timer_ms(rt_clock, icount_adjust_rt, NULL); |
| 351 | qemu_mod_timer(icount_rt_timer, |
| 352 | qemu_get_clock_ms(rt_clock) + 1000); |
| 353 | icount_vm_timer = qemu_new_timer_ns(vm_clock, icount_adjust_vm, NULL); |
| 354 | qemu_mod_timer(icount_vm_timer, |
| 355 | qemu_get_clock_ns(vm_clock) + get_ticks_per_sec() / 10); |
| 356 | } |
| 357 | |
| 358 | /***********************************************************/ |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 359 | void hw_error(const char *fmt, ...) |
| 360 | { |
| 361 | va_list ap; |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 362 | CPUArchState *env; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 363 | |
| 364 | va_start(ap, fmt); |
| 365 | fprintf(stderr, "qemu: hardware error: "); |
| 366 | vfprintf(stderr, fmt, ap); |
| 367 | fprintf(stderr, "\n"); |
| 368 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
| 369 | fprintf(stderr, "CPU #%d:\n", env->cpu_index); |
| 370 | #ifdef TARGET_I386 |
| 371 | cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU); |
| 372 | #else |
| 373 | cpu_dump_state(env, stderr, fprintf, 0); |
| 374 | #endif |
| 375 | } |
| 376 | va_end(ap); |
| 377 | abort(); |
| 378 | } |
| 379 | |
| 380 | void cpu_synchronize_all_states(void) |
| 381 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 382 | CPUArchState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 383 | |
| 384 | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { |
| 385 | cpu_synchronize_state(cpu); |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | void cpu_synchronize_all_post_reset(void) |
| 390 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 391 | CPUArchState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 392 | |
| 393 | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { |
| 394 | cpu_synchronize_post_reset(cpu); |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | void cpu_synchronize_all_post_init(void) |
| 399 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 400 | CPUArchState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 401 | |
| 402 | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { |
| 403 | cpu_synchronize_post_init(cpu); |
| 404 | } |
| 405 | } |
| 406 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 407 | int cpu_is_stopped(CPUArchState *env) |
Marcelo Tosatti | 3ae9501 | 2010-05-04 09:45:24 -0300 | [diff] [blame] | 408 | { |
Luiz Capitulino | 1354869 | 2011-07-29 15:36:43 -0300 | [diff] [blame] | 409 | return !runstate_is_running() || env->stopped; |
Marcelo Tosatti | 3ae9501 | 2010-05-04 09:45:24 -0300 | [diff] [blame] | 410 | } |
| 411 | |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 412 | static void do_vm_stop(RunState state) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 413 | { |
Luiz Capitulino | 1354869 | 2011-07-29 15:36:43 -0300 | [diff] [blame] | 414 | if (runstate_is_running()) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 415 | cpu_disable_ticks(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 416 | pause_all_vcpus(); |
Luiz Capitulino | f5bbfba | 2011-07-29 15:04:45 -0300 | [diff] [blame] | 417 | runstate_set(state); |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 418 | vm_state_notify(0, state); |
Stefan Hajnoczi | 922453b | 2011-11-30 12:23:43 +0000 | [diff] [blame] | 419 | bdrv_drain_all(); |
Michael S. Tsirkin | 55df6f3 | 2010-11-22 19:52:22 +0200 | [diff] [blame] | 420 | bdrv_flush_all(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 421 | monitor_protocol_event(QEVENT_STOP, NULL); |
| 422 | } |
| 423 | } |
| 424 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 425 | static int cpu_can_run(CPUArchState *env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 426 | { |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 427 | if (env->stop) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 428 | return 0; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 429 | } |
Luiz Capitulino | 1354869 | 2011-07-29 15:36:43 -0300 | [diff] [blame] | 430 | if (env->stopped || !runstate_is_running()) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 431 | return 0; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 432 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 433 | return 1; |
| 434 | } |
| 435 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 436 | static bool cpu_thread_is_idle(CPUArchState *env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 437 | { |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 438 | if (env->stop || env->queued_work_first) { |
| 439 | return false; |
| 440 | } |
Luiz Capitulino | 1354869 | 2011-07-29 15:36:43 -0300 | [diff] [blame] | 441 | if (env->stopped || !runstate_is_running()) { |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 442 | return true; |
| 443 | } |
Jan Kiszka | 56b9ead | 2012-03-21 13:36:22 +0100 | [diff] [blame] | 444 | if (!env->halted || qemu_cpu_has_work(env) || kvm_irqchip_in_kernel()) { |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 445 | return false; |
| 446 | } |
| 447 | return true; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 448 | } |
| 449 | |
Paolo Bonzini | ab33fcd | 2011-04-13 10:03:44 +0200 | [diff] [blame] | 450 | bool all_cpu_threads_idle(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 451 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 452 | CPUArchState *env; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 453 | |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 454 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 455 | if (!cpu_thread_is_idle(env)) { |
| 456 | return false; |
| 457 | } |
| 458 | } |
| 459 | return true; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 460 | } |
| 461 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 462 | static void cpu_handle_guest_debug(CPUArchState *env) |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 463 | { |
| 464 | gdb_set_stop_cpu(env); |
Jan Kiszka | 8cf7171 | 2011-02-07 12:19:16 +0100 | [diff] [blame] | 465 | qemu_system_debug_request(); |
Jan Kiszka | 83f338f | 2011-02-07 12:19:17 +0100 | [diff] [blame] | 466 | env->stopped = 1; |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 467 | } |
| 468 | |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 469 | static void cpu_signal(int sig) |
| 470 | { |
| 471 | if (cpu_single_env) { |
| 472 | cpu_exit(cpu_single_env); |
| 473 | } |
| 474 | exit_request = 1; |
| 475 | } |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 476 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 477 | #ifdef CONFIG_LINUX |
| 478 | static void sigbus_reraise(void) |
| 479 | { |
| 480 | sigset_t set; |
| 481 | struct sigaction action; |
| 482 | |
| 483 | memset(&action, 0, sizeof(action)); |
| 484 | action.sa_handler = SIG_DFL; |
| 485 | if (!sigaction(SIGBUS, &action, NULL)) { |
| 486 | raise(SIGBUS); |
| 487 | sigemptyset(&set); |
| 488 | sigaddset(&set, SIGBUS); |
| 489 | sigprocmask(SIG_UNBLOCK, &set, NULL); |
| 490 | } |
| 491 | perror("Failed to re-raise SIGBUS!\n"); |
| 492 | abort(); |
| 493 | } |
| 494 | |
| 495 | static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo, |
| 496 | void *ctx) |
| 497 | { |
| 498 | if (kvm_on_sigbus(siginfo->ssi_code, |
| 499 | (void *)(intptr_t)siginfo->ssi_addr)) { |
| 500 | sigbus_reraise(); |
| 501 | } |
| 502 | } |
| 503 | |
| 504 | static void qemu_init_sigbus(void) |
| 505 | { |
| 506 | struct sigaction action; |
| 507 | |
| 508 | memset(&action, 0, sizeof(action)); |
| 509 | action.sa_flags = SA_SIGINFO; |
| 510 | action.sa_sigaction = (void (*)(int, siginfo_t*, void*))sigbus_handler; |
| 511 | sigaction(SIGBUS, &action, NULL); |
| 512 | |
| 513 | prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0); |
| 514 | } |
| 515 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 516 | static void qemu_kvm_eat_signals(CPUArchState *env) |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 517 | { |
| 518 | struct timespec ts = { 0, 0 }; |
| 519 | siginfo_t siginfo; |
| 520 | sigset_t waitset; |
| 521 | sigset_t chkset; |
| 522 | int r; |
| 523 | |
| 524 | sigemptyset(&waitset); |
| 525 | sigaddset(&waitset, SIG_IPI); |
| 526 | sigaddset(&waitset, SIGBUS); |
| 527 | |
| 528 | do { |
| 529 | r = sigtimedwait(&waitset, &siginfo, &ts); |
| 530 | if (r == -1 && !(errno == EAGAIN || errno == EINTR)) { |
| 531 | perror("sigtimedwait"); |
| 532 | exit(1); |
| 533 | } |
| 534 | |
| 535 | switch (r) { |
| 536 | case SIGBUS: |
| 537 | if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr)) { |
| 538 | sigbus_reraise(); |
| 539 | } |
| 540 | break; |
| 541 | default: |
| 542 | break; |
| 543 | } |
| 544 | |
| 545 | r = sigpending(&chkset); |
| 546 | if (r == -1) { |
| 547 | perror("sigpending"); |
| 548 | exit(1); |
| 549 | } |
| 550 | } while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS)); |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 551 | } |
| 552 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 553 | #else /* !CONFIG_LINUX */ |
| 554 | |
| 555 | static void qemu_init_sigbus(void) |
| 556 | { |
| 557 | } |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 558 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 559 | static void qemu_kvm_eat_signals(CPUArchState *env) |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 560 | { |
| 561 | } |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 562 | #endif /* !CONFIG_LINUX */ |
| 563 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 564 | #ifndef _WIN32 |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 565 | static void dummy_signal(int sig) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 566 | { |
| 567 | } |
| 568 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 569 | static void qemu_kvm_init_cpu_signals(CPUArchState *env) |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 570 | { |
| 571 | int r; |
| 572 | sigset_t set; |
| 573 | struct sigaction sigact; |
| 574 | |
| 575 | memset(&sigact, 0, sizeof(sigact)); |
| 576 | sigact.sa_handler = dummy_signal; |
| 577 | sigaction(SIG_IPI, &sigact, NULL); |
| 578 | |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 579 | pthread_sigmask(SIG_BLOCK, NULL, &set); |
| 580 | sigdelset(&set, SIG_IPI); |
| 581 | sigdelset(&set, SIGBUS); |
| 582 | r = kvm_set_signal_mask(env, &set); |
| 583 | if (r) { |
| 584 | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r)); |
| 585 | exit(1); |
| 586 | } |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 587 | } |
| 588 | |
| 589 | static void qemu_tcg_init_cpu_signals(void) |
| 590 | { |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 591 | sigset_t set; |
| 592 | struct sigaction sigact; |
| 593 | |
| 594 | memset(&sigact, 0, sizeof(sigact)); |
| 595 | sigact.sa_handler = cpu_signal; |
| 596 | sigaction(SIG_IPI, &sigact, NULL); |
| 597 | |
| 598 | sigemptyset(&set); |
| 599 | sigaddset(&set, SIG_IPI); |
| 600 | pthread_sigmask(SIG_UNBLOCK, &set, NULL); |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 601 | } |
| 602 | |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 603 | #else /* _WIN32 */ |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 604 | static void qemu_kvm_init_cpu_signals(CPUArchState *env) |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 605 | { |
| 606 | abort(); |
| 607 | } |
| 608 | |
| 609 | static void qemu_tcg_init_cpu_signals(void) |
| 610 | { |
| 611 | } |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 612 | #endif /* _WIN32 */ |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 613 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 614 | QemuMutex qemu_global_mutex; |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 615 | static QemuCond qemu_io_proceeded_cond; |
| 616 | static bool iothread_requesting_mutex; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 617 | |
| 618 | static QemuThread io_thread; |
| 619 | |
| 620 | static QemuThread *tcg_cpu_thread; |
| 621 | static QemuCond *tcg_halt_cond; |
| 622 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 623 | /* cpu creation */ |
| 624 | static QemuCond qemu_cpu_cond; |
| 625 | /* system init */ |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 626 | static QemuCond qemu_pause_cond; |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 627 | static QemuCond qemu_work_cond; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 628 | |
Paolo Bonzini | d3b12f5 | 2011-09-13 10:30:52 +0200 | [diff] [blame] | 629 | void qemu_init_cpu_loop(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 630 | { |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 631 | qemu_init_sigbus(); |
Anthony Liguori | ed94592 | 2011-02-08 18:18:18 +0100 | [diff] [blame] | 632 | qemu_cond_init(&qemu_cpu_cond); |
Anthony Liguori | ed94592 | 2011-02-08 18:18:18 +0100 | [diff] [blame] | 633 | qemu_cond_init(&qemu_pause_cond); |
| 634 | qemu_cond_init(&qemu_work_cond); |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 635 | qemu_cond_init(&qemu_io_proceeded_cond); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 636 | qemu_mutex_init(&qemu_global_mutex); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 637 | |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 638 | qemu_thread_get_self(&io_thread); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 639 | } |
| 640 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 641 | void run_on_cpu(CPUArchState *env, void (*func)(void *data), void *data) |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 642 | { |
| 643 | struct qemu_work_item wi; |
| 644 | |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 645 | if (qemu_cpu_is_self(env)) { |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 646 | func(data); |
| 647 | return; |
| 648 | } |
| 649 | |
| 650 | wi.func = func; |
| 651 | wi.data = data; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 652 | if (!env->queued_work_first) { |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 653 | env->queued_work_first = &wi; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 654 | } else { |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 655 | env->queued_work_last->next = &wi; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 656 | } |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 657 | env->queued_work_last = &wi; |
| 658 | wi.next = NULL; |
| 659 | wi.done = false; |
| 660 | |
| 661 | qemu_cpu_kick(env); |
| 662 | while (!wi.done) { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 663 | CPUArchState *self_env = cpu_single_env; |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 664 | |
| 665 | qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex); |
| 666 | cpu_single_env = self_env; |
| 667 | } |
| 668 | } |
| 669 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 670 | static void flush_queued_work(CPUArchState *env) |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 671 | { |
| 672 | struct qemu_work_item *wi; |
| 673 | |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 674 | if (!env->queued_work_first) { |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 675 | return; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 676 | } |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 677 | |
| 678 | while ((wi = env->queued_work_first)) { |
| 679 | env->queued_work_first = wi->next; |
| 680 | wi->func(wi->data); |
| 681 | wi->done = true; |
| 682 | } |
| 683 | env->queued_work_last = NULL; |
| 684 | qemu_cond_broadcast(&qemu_work_cond); |
| 685 | } |
| 686 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 687 | static void qemu_wait_io_event_common(CPUArchState *env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 688 | { |
| 689 | if (env->stop) { |
| 690 | env->stop = 0; |
| 691 | env->stopped = 1; |
| 692 | qemu_cond_signal(&qemu_pause_cond); |
| 693 | } |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 694 | flush_queued_work(env); |
Jan Kiszka | aa2c364 | 2011-02-01 22:15:42 +0100 | [diff] [blame] | 695 | env->thread_kicked = false; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 696 | } |
| 697 | |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 698 | static void qemu_tcg_wait_io_event(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 699 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 700 | CPUArchState *env; |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 701 | |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 702 | while (all_cpu_threads_idle()) { |
Paolo Bonzini | ab33fcd | 2011-04-13 10:03:44 +0200 | [diff] [blame] | 703 | /* Start accounting real time to the virtual clock if the CPUs |
| 704 | are idle. */ |
| 705 | qemu_clock_warp(vm_clock); |
Paolo Bonzini | 9705fbb | 2011-03-12 17:44:00 +0100 | [diff] [blame] | 706 | qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 707 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 708 | |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 709 | while (iothread_requesting_mutex) { |
| 710 | qemu_cond_wait(&qemu_io_proceeded_cond, &qemu_global_mutex); |
| 711 | } |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 712 | |
| 713 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 714 | qemu_wait_io_event_common(env); |
| 715 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 716 | } |
| 717 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 718 | static void qemu_kvm_wait_io_event(CPUArchState *env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 719 | { |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 720 | while (cpu_thread_is_idle(env)) { |
Paolo Bonzini | 9705fbb | 2011-03-12 17:44:00 +0100 | [diff] [blame] | 721 | qemu_cond_wait(env->halt_cond, &qemu_global_mutex); |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 722 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 723 | |
Jan Kiszka | 5db5bda | 2011-02-01 22:15:54 +0100 | [diff] [blame] | 724 | qemu_kvm_eat_signals(env); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 725 | qemu_wait_io_event_common(env); |
| 726 | } |
| 727 | |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 728 | static void *qemu_kvm_cpu_thread_fn(void *arg) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 729 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 730 | CPUArchState *env = arg; |
Jan Kiszka | 84b4915 | 2011-02-01 22:15:50 +0100 | [diff] [blame] | 731 | int r; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 732 | |
Marcelo Tosatti | 6164e6d | 2010-03-23 13:37:13 -0300 | [diff] [blame] | 733 | qemu_mutex_lock(&qemu_global_mutex); |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 734 | qemu_thread_get_self(env->thread); |
Jan Kiszka | dc7a09c | 2011-03-15 12:26:31 +0100 | [diff] [blame] | 735 | env->thread_id = qemu_get_thread_id(); |
Jan Kiszka | e479c20 | 2012-02-17 18:31:13 +0100 | [diff] [blame] | 736 | cpu_single_env = env; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 737 | |
Jan Kiszka | 84b4915 | 2011-02-01 22:15:50 +0100 | [diff] [blame] | 738 | r = kvm_init_vcpu(env); |
| 739 | if (r < 0) { |
| 740 | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r)); |
| 741 | exit(1); |
| 742 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 743 | |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 744 | qemu_kvm_init_cpu_signals(env); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 745 | |
| 746 | /* signal CPU creation */ |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 747 | env->created = 1; |
| 748 | qemu_cond_signal(&qemu_cpu_cond); |
| 749 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 750 | while (1) { |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 751 | if (cpu_can_run(env)) { |
Jan Kiszka | 6792a57 | 2011-02-07 12:19:18 +0100 | [diff] [blame] | 752 | r = kvm_cpu_exec(env); |
Jan Kiszka | 83f338f | 2011-02-07 12:19:17 +0100 | [diff] [blame] | 753 | if (r == EXCP_DEBUG) { |
Jan Kiszka | 1009d2e | 2011-03-15 12:26:13 +0100 | [diff] [blame] | 754 | cpu_handle_guest_debug(env); |
Jan Kiszka | 83f338f | 2011-02-07 12:19:17 +0100 | [diff] [blame] | 755 | } |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 756 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 757 | qemu_kvm_wait_io_event(env); |
| 758 | } |
| 759 | |
| 760 | return NULL; |
| 761 | } |
| 762 | |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 763 | static void *qemu_dummy_cpu_thread_fn(void *arg) |
| 764 | { |
| 765 | #ifdef _WIN32 |
| 766 | fprintf(stderr, "qtest is not supported under Windows\n"); |
| 767 | exit(1); |
| 768 | #else |
| 769 | CPUArchState *env = arg; |
| 770 | sigset_t waitset; |
| 771 | int r; |
| 772 | |
| 773 | qemu_mutex_lock_iothread(); |
| 774 | qemu_thread_get_self(env->thread); |
| 775 | env->thread_id = qemu_get_thread_id(); |
| 776 | |
| 777 | sigemptyset(&waitset); |
| 778 | sigaddset(&waitset, SIG_IPI); |
| 779 | |
| 780 | /* signal CPU creation */ |
| 781 | env->created = 1; |
| 782 | qemu_cond_signal(&qemu_cpu_cond); |
| 783 | |
| 784 | cpu_single_env = env; |
| 785 | while (1) { |
| 786 | cpu_single_env = NULL; |
| 787 | qemu_mutex_unlock_iothread(); |
| 788 | do { |
| 789 | int sig; |
| 790 | r = sigwait(&waitset, &sig); |
| 791 | } while (r == -1 && (errno == EAGAIN || errno == EINTR)); |
| 792 | if (r == -1) { |
| 793 | perror("sigwait"); |
| 794 | exit(1); |
| 795 | } |
| 796 | qemu_mutex_lock_iothread(); |
| 797 | cpu_single_env = env; |
| 798 | qemu_wait_io_event_common(env); |
| 799 | } |
| 800 | |
| 801 | return NULL; |
| 802 | #endif |
| 803 | } |
| 804 | |
Jan Kiszka | bdb7ca6 | 2011-09-26 09:40:39 +0200 | [diff] [blame] | 805 | static void tcg_exec_all(void); |
| 806 | |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 807 | static void *qemu_tcg_cpu_thread_fn(void *arg) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 808 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 809 | CPUArchState *env = arg; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 810 | |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 811 | qemu_tcg_init_cpu_signals(); |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 812 | qemu_thread_get_self(env->thread); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 813 | |
| 814 | /* signal CPU creation */ |
| 815 | qemu_mutex_lock(&qemu_global_mutex); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 816 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
Jan Kiszka | dc7a09c | 2011-03-15 12:26:31 +0100 | [diff] [blame] | 817 | env->thread_id = qemu_get_thread_id(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 818 | env->created = 1; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 819 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 820 | qemu_cond_signal(&qemu_cpu_cond); |
| 821 | |
Jan Kiszka | fa7d186 | 2011-08-22 18:35:25 +0200 | [diff] [blame] | 822 | /* wait for initial kick-off after machine start */ |
| 823 | while (first_cpu->stopped) { |
| 824 | qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); |
Jan Kiszka | 8e564b4 | 2012-02-17 18:31:15 +0100 | [diff] [blame] | 825 | |
| 826 | /* process any pending work */ |
| 827 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 828 | qemu_wait_io_event_common(env); |
| 829 | } |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 830 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 831 | |
| 832 | while (1) { |
Jan Kiszka | bdb7ca6 | 2011-09-26 09:40:39 +0200 | [diff] [blame] | 833 | tcg_exec_all(); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 834 | if (use_icount && qemu_clock_deadline(vm_clock) <= 0) { |
Paolo Bonzini | 3b2319a | 2011-04-13 10:03:43 +0200 | [diff] [blame] | 835 | qemu_notify_event(); |
| 836 | } |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 837 | qemu_tcg_wait_io_event(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 838 | } |
| 839 | |
| 840 | return NULL; |
| 841 | } |
| 842 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 843 | static void qemu_cpu_kick_thread(CPUArchState *env) |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 844 | { |
| 845 | #ifndef _WIN32 |
| 846 | int err; |
| 847 | |
| 848 | err = pthread_kill(env->thread->thread, SIG_IPI); |
| 849 | if (err) { |
| 850 | fprintf(stderr, "qemu:%s: %s", __func__, strerror(err)); |
| 851 | exit(1); |
| 852 | } |
| 853 | #else /* _WIN32 */ |
| 854 | if (!qemu_cpu_is_self(env)) { |
Paolo Bonzini | 1ecf47b | 2011-12-13 13:43:52 +0100 | [diff] [blame] | 855 | SuspendThread(env->hThread); |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 856 | cpu_signal(0); |
Paolo Bonzini | 1ecf47b | 2011-12-13 13:43:52 +0100 | [diff] [blame] | 857 | ResumeThread(env->hThread); |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 858 | } |
| 859 | #endif |
| 860 | } |
| 861 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 862 | void qemu_cpu_kick(void *_env) |
| 863 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 864 | CPUArchState *env = _env; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 865 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 866 | qemu_cond_broadcast(env->halt_cond); |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 867 | if (!tcg_enabled() && !env->thread_kicked) { |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 868 | qemu_cpu_kick_thread(env); |
Jan Kiszka | aa2c364 | 2011-02-01 22:15:42 +0100 | [diff] [blame] | 869 | env->thread_kicked = true; |
| 870 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 871 | } |
| 872 | |
Jan Kiszka | 46d62fa | 2011-02-01 22:15:59 +0100 | [diff] [blame] | 873 | void qemu_cpu_kick_self(void) |
| 874 | { |
Paolo Bonzini | b55c22c | 2011-03-12 17:44:07 +0100 | [diff] [blame] | 875 | #ifndef _WIN32 |
Jan Kiszka | 46d62fa | 2011-02-01 22:15:59 +0100 | [diff] [blame] | 876 | assert(cpu_single_env); |
| 877 | |
| 878 | if (!cpu_single_env->thread_kicked) { |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 879 | qemu_cpu_kick_thread(cpu_single_env); |
Jan Kiszka | 46d62fa | 2011-02-01 22:15:59 +0100 | [diff] [blame] | 880 | cpu_single_env->thread_kicked = true; |
| 881 | } |
Paolo Bonzini | b55c22c | 2011-03-12 17:44:07 +0100 | [diff] [blame] | 882 | #else |
| 883 | abort(); |
| 884 | #endif |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 885 | } |
| 886 | |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 887 | int qemu_cpu_is_self(void *_env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 888 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 889 | CPUArchState *env = _env; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 890 | |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 891 | return qemu_thread_is_self(env->thread); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 892 | } |
| 893 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 894 | void qemu_mutex_lock_iothread(void) |
| 895 | { |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 896 | if (!tcg_enabled()) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 897 | qemu_mutex_lock(&qemu_global_mutex); |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 898 | } else { |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 899 | iothread_requesting_mutex = true; |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 900 | if (qemu_mutex_trylock(&qemu_global_mutex)) { |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 901 | qemu_cpu_kick_thread(first_cpu); |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 902 | qemu_mutex_lock(&qemu_global_mutex); |
| 903 | } |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 904 | iothread_requesting_mutex = false; |
| 905 | qemu_cond_broadcast(&qemu_io_proceeded_cond); |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 906 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 907 | } |
| 908 | |
| 909 | void qemu_mutex_unlock_iothread(void) |
| 910 | { |
| 911 | qemu_mutex_unlock(&qemu_global_mutex); |
| 912 | } |
| 913 | |
| 914 | static int all_vcpus_paused(void) |
| 915 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 916 | CPUArchState *penv = first_cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 917 | |
| 918 | while (penv) { |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 919 | if (!penv->stopped) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 920 | return 0; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 921 | } |
Jan Kiszka | 5207a5e | 2012-02-17 18:31:14 +0100 | [diff] [blame] | 922 | penv = penv->next_cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 923 | } |
| 924 | |
| 925 | return 1; |
| 926 | } |
| 927 | |
| 928 | void pause_all_vcpus(void) |
| 929 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 930 | CPUArchState *penv = first_cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 931 | |
Paolo Bonzini | a5c57d6 | 2011-09-12 14:40:36 +0200 | [diff] [blame] | 932 | qemu_clock_enable(vm_clock, false); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 933 | while (penv) { |
| 934 | penv->stop = 1; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 935 | qemu_cpu_kick(penv); |
Jan Kiszka | 5207a5e | 2012-02-17 18:31:14 +0100 | [diff] [blame] | 936 | penv = penv->next_cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 937 | } |
| 938 | |
Jan Kiszka | d798e97 | 2012-02-17 18:31:16 +0100 | [diff] [blame] | 939 | if (!qemu_thread_is_self(&io_thread)) { |
| 940 | cpu_stop_current(); |
| 941 | if (!kvm_enabled()) { |
| 942 | while (penv) { |
| 943 | penv->stop = 0; |
| 944 | penv->stopped = 1; |
| 945 | penv = penv->next_cpu; |
| 946 | } |
| 947 | return; |
| 948 | } |
| 949 | } |
| 950 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 951 | while (!all_vcpus_paused()) { |
Paolo Bonzini | be7d6c5 | 2011-03-12 17:44:02 +0100 | [diff] [blame] | 952 | qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 953 | penv = first_cpu; |
| 954 | while (penv) { |
Marcelo Tosatti | 1fbb22e | 2010-05-04 09:45:21 -0300 | [diff] [blame] | 955 | qemu_cpu_kick(penv); |
Jan Kiszka | 5207a5e | 2012-02-17 18:31:14 +0100 | [diff] [blame] | 956 | penv = penv->next_cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 957 | } |
| 958 | } |
| 959 | } |
| 960 | |
| 961 | void resume_all_vcpus(void) |
| 962 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 963 | CPUArchState *penv = first_cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 964 | |
Wen Congyang | 47113ab | 2011-11-04 10:45:58 +0800 | [diff] [blame] | 965 | qemu_clock_enable(vm_clock, true); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 966 | while (penv) { |
| 967 | penv->stop = 0; |
| 968 | penv->stopped = 0; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 969 | qemu_cpu_kick(penv); |
Jan Kiszka | 5207a5e | 2012-02-17 18:31:14 +0100 | [diff] [blame] | 970 | penv = penv->next_cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 971 | } |
| 972 | } |
| 973 | |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 974 | static void qemu_tcg_init_vcpu(void *_env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 975 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 976 | CPUArchState *env = _env; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 977 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 978 | /* share a single thread for all cpus with TCG */ |
| 979 | if (!tcg_cpu_thread) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 980 | env->thread = g_malloc0(sizeof(QemuThread)); |
| 981 | env->halt_cond = g_malloc0(sizeof(QemuCond)); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 982 | qemu_cond_init(env->halt_cond); |
Jan Kiszka | fa7d186 | 2011-08-22 18:35:25 +0200 | [diff] [blame] | 983 | tcg_halt_cond = env->halt_cond; |
Jan Kiszka | cf21871 | 2011-12-12 17:21:31 +0100 | [diff] [blame] | 984 | qemu_thread_create(env->thread, qemu_tcg_cpu_thread_fn, env, |
Paolo Bonzini | 1ecf47b | 2011-12-13 13:43:52 +0100 | [diff] [blame] | 985 | QEMU_THREAD_JOINABLE); |
| 986 | #ifdef _WIN32 |
| 987 | env->hThread = qemu_thread_get_handle(env->thread); |
| 988 | #endif |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 989 | while (env->created == 0) { |
Paolo Bonzini | 18a8572 | 2011-03-12 17:44:03 +0100 | [diff] [blame] | 990 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 991 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 992 | tcg_cpu_thread = env->thread; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 993 | } else { |
| 994 | env->thread = tcg_cpu_thread; |
| 995 | env->halt_cond = tcg_halt_cond; |
| 996 | } |
| 997 | } |
| 998 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 999 | static void qemu_kvm_start_vcpu(CPUArchState *env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1000 | { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1001 | env->thread = g_malloc0(sizeof(QemuThread)); |
| 1002 | env->halt_cond = g_malloc0(sizeof(QemuCond)); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1003 | qemu_cond_init(env->halt_cond); |
Jan Kiszka | cf21871 | 2011-12-12 17:21:31 +0100 | [diff] [blame] | 1004 | qemu_thread_create(env->thread, qemu_kvm_cpu_thread_fn, env, |
Paolo Bonzini | 1ecf47b | 2011-12-13 13:43:52 +0100 | [diff] [blame] | 1005 | QEMU_THREAD_JOINABLE); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1006 | while (env->created == 0) { |
Paolo Bonzini | 18a8572 | 2011-03-12 17:44:03 +0100 | [diff] [blame] | 1007 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1008 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1009 | } |
| 1010 | |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1011 | static void qemu_dummy_start_vcpu(CPUArchState *env) |
| 1012 | { |
| 1013 | env->thread = g_malloc0(sizeof(QemuThread)); |
| 1014 | env->halt_cond = g_malloc0(sizeof(QemuCond)); |
| 1015 | qemu_cond_init(env->halt_cond); |
| 1016 | qemu_thread_create(env->thread, qemu_dummy_cpu_thread_fn, env, |
| 1017 | QEMU_THREAD_JOINABLE); |
| 1018 | while (env->created == 0) { |
| 1019 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
| 1020 | } |
| 1021 | } |
| 1022 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1023 | void qemu_init_vcpu(void *_env) |
| 1024 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1025 | CPUArchState *env = _env; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1026 | |
| 1027 | env->nr_cores = smp_cores; |
| 1028 | env->nr_threads = smp_threads; |
Jan Kiszka | fa7d186 | 2011-08-22 18:35:25 +0200 | [diff] [blame] | 1029 | env->stopped = 1; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1030 | if (kvm_enabled()) { |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 1031 | qemu_kvm_start_vcpu(env); |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1032 | } else if (tcg_enabled()) { |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 1033 | qemu_tcg_init_vcpu(env); |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1034 | } else { |
| 1035 | qemu_dummy_start_vcpu(env); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1036 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1037 | } |
| 1038 | |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1039 | void cpu_stop_current(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1040 | { |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1041 | if (cpu_single_env) { |
Paolo Bonzini | 67bb172 | 2011-03-12 17:43:59 +0100 | [diff] [blame] | 1042 | cpu_single_env->stop = 0; |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1043 | cpu_single_env->stopped = 1; |
| 1044 | cpu_exit(cpu_single_env); |
Paolo Bonzini | 67bb172 | 2011-03-12 17:43:59 +0100 | [diff] [blame] | 1045 | qemu_cond_signal(&qemu_pause_cond); |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1046 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1047 | } |
| 1048 | |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 1049 | void vm_stop(RunState state) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1050 | { |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 1051 | if (!qemu_thread_is_self(&io_thread)) { |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 1052 | qemu_system_vmstop_request(state); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1053 | /* |
| 1054 | * FIXME: should not return to device code in case |
| 1055 | * vm_stop() has been requested. |
| 1056 | */ |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1057 | cpu_stop_current(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1058 | return; |
| 1059 | } |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 1060 | do_vm_stop(state); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1061 | } |
| 1062 | |
Luiz Capitulino | 8a9236f | 2011-10-14 11:18:09 -0300 | [diff] [blame] | 1063 | /* does a state transition even if the VM is already stopped, |
| 1064 | current state is forgotten forever */ |
| 1065 | void vm_stop_force_state(RunState state) |
| 1066 | { |
| 1067 | if (runstate_is_running()) { |
| 1068 | vm_stop(state); |
| 1069 | } else { |
| 1070 | runstate_set(state); |
| 1071 | } |
| 1072 | } |
| 1073 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1074 | static int tcg_cpu_exec(CPUArchState *env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1075 | { |
| 1076 | int ret; |
| 1077 | #ifdef CONFIG_PROFILER |
| 1078 | int64_t ti; |
| 1079 | #endif |
| 1080 | |
| 1081 | #ifdef CONFIG_PROFILER |
| 1082 | ti = profile_getclock(); |
| 1083 | #endif |
| 1084 | if (use_icount) { |
| 1085 | int64_t count; |
| 1086 | int decr; |
| 1087 | qemu_icount -= (env->icount_decr.u16.low + env->icount_extra); |
| 1088 | env->icount_decr.u16.low = 0; |
| 1089 | env->icount_extra = 0; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 1090 | count = qemu_icount_round(qemu_clock_deadline(vm_clock)); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1091 | qemu_icount += count; |
| 1092 | decr = (count > 0xffff) ? 0xffff : count; |
| 1093 | count -= decr; |
| 1094 | env->icount_decr.u16.low = decr; |
| 1095 | env->icount_extra = count; |
| 1096 | } |
| 1097 | ret = cpu_exec(env); |
| 1098 | #ifdef CONFIG_PROFILER |
| 1099 | qemu_time += profile_getclock() - ti; |
| 1100 | #endif |
| 1101 | if (use_icount) { |
| 1102 | /* Fold pending instructions back into the |
| 1103 | instruction counter, and clear the interrupt flag. */ |
| 1104 | qemu_icount -= (env->icount_decr.u16.low |
| 1105 | + env->icount_extra); |
| 1106 | env->icount_decr.u32 = 0; |
| 1107 | env->icount_extra = 0; |
| 1108 | } |
| 1109 | return ret; |
| 1110 | } |
| 1111 | |
Jan Kiszka | bdb7ca6 | 2011-09-26 09:40:39 +0200 | [diff] [blame] | 1112 | static void tcg_exec_all(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1113 | { |
Jan Kiszka | 9a36085 | 2011-02-01 22:15:55 +0100 | [diff] [blame] | 1114 | int r; |
| 1115 | |
Paolo Bonzini | ab33fcd | 2011-04-13 10:03:44 +0200 | [diff] [blame] | 1116 | /* Account partial waits to the vm_clock. */ |
| 1117 | qemu_clock_warp(vm_clock); |
| 1118 | |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1119 | if (next_cpu == NULL) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1120 | next_cpu = first_cpu; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1121 | } |
Jan Kiszka | c629a4b | 2010-06-25 16:56:52 +0200 | [diff] [blame] | 1122 | for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu) { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1123 | CPUArchState *env = next_cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1124 | |
| 1125 | qemu_clock_enable(vm_clock, |
Jan Kiszka | 345f442 | 2010-06-25 16:56:54 +0200 | [diff] [blame] | 1126 | (env->singlestep_enabled & SSTEP_NOTIMER) == 0); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1127 | |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 1128 | if (cpu_can_run(env)) { |
Jan Kiszka | bdb7ca6 | 2011-09-26 09:40:39 +0200 | [diff] [blame] | 1129 | r = tcg_cpu_exec(env); |
Jan Kiszka | 9a36085 | 2011-02-01 22:15:55 +0100 | [diff] [blame] | 1130 | if (r == EXCP_DEBUG) { |
Jan Kiszka | 1009d2e | 2011-03-15 12:26:13 +0100 | [diff] [blame] | 1131 | cpu_handle_guest_debug(env); |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 1132 | break; |
| 1133 | } |
Paolo Bonzini | df646df | 2011-03-12 17:43:58 +0100 | [diff] [blame] | 1134 | } else if (env->stop || env->stopped) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1135 | break; |
| 1136 | } |
| 1137 | } |
Jan Kiszka | c629a4b | 2010-06-25 16:56:52 +0200 | [diff] [blame] | 1138 | exit_request = 0; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1139 | } |
| 1140 | |
| 1141 | void set_numa_modes(void) |
| 1142 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1143 | CPUArchState *env; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1144 | int i; |
| 1145 | |
| 1146 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1147 | for (i = 0; i < nb_numa_nodes; i++) { |
| 1148 | if (node_cpumask[i] & (1 << env->cpu_index)) { |
| 1149 | env->numa_node = i; |
| 1150 | } |
| 1151 | } |
| 1152 | } |
| 1153 | } |
| 1154 | |
| 1155 | void set_cpu_log(const char *optarg) |
| 1156 | { |
| 1157 | int mask; |
| 1158 | const CPULogItem *item; |
| 1159 | |
| 1160 | mask = cpu_str_to_log_mask(optarg); |
| 1161 | if (!mask) { |
| 1162 | printf("Log items (comma separated):\n"); |
| 1163 | for (item = cpu_log_items; item->mask != 0; item++) { |
| 1164 | printf("%-10s %s\n", item->name, item->help); |
| 1165 | } |
| 1166 | exit(1); |
| 1167 | } |
| 1168 | cpu_set_log(mask); |
| 1169 | } |
Blue Swirl | 29e922b | 2010-03-29 19:24:00 +0000 | [diff] [blame] | 1170 | |
Matthew Fernandez | c235d73 | 2011-06-07 16:32:40 +0000 | [diff] [blame] | 1171 | void set_cpu_log_filename(const char *optarg) |
| 1172 | { |
| 1173 | cpu_set_log_filename(optarg); |
| 1174 | } |
| 1175 | |
Stefan Weil | 9a78eea | 2010-10-22 23:03:33 +0200 | [diff] [blame] | 1176 | void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg) |
Blue Swirl | 262353c | 2010-05-04 19:55:35 +0000 | [diff] [blame] | 1177 | { |
| 1178 | /* XXX: implement xxx_cpu_list for targets that still miss it */ |
| 1179 | #if defined(cpu_list_id) |
| 1180 | cpu_list_id(f, cpu_fprintf, optarg); |
| 1181 | #elif defined(cpu_list) |
| 1182 | cpu_list(f, cpu_fprintf); /* deprecated */ |
| 1183 | #endif |
| 1184 | } |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1185 | |
| 1186 | CpuInfoList *qmp_query_cpus(Error **errp) |
| 1187 | { |
| 1188 | CpuInfoList *head = NULL, *cur_item = NULL; |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1189 | CPUArchState *env; |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1190 | |
| 1191 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1192 | CpuInfoList *info; |
| 1193 | |
| 1194 | cpu_synchronize_state(env); |
| 1195 | |
| 1196 | info = g_malloc0(sizeof(*info)); |
| 1197 | info->value = g_malloc0(sizeof(*info->value)); |
| 1198 | info->value->CPU = env->cpu_index; |
| 1199 | info->value->current = (env == first_cpu); |
| 1200 | info->value->halted = env->halted; |
| 1201 | info->value->thread_id = env->thread_id; |
| 1202 | #if defined(TARGET_I386) |
| 1203 | info->value->has_pc = true; |
| 1204 | info->value->pc = env->eip + env->segs[R_CS].base; |
| 1205 | #elif defined(TARGET_PPC) |
| 1206 | info->value->has_nip = true; |
| 1207 | info->value->nip = env->nip; |
| 1208 | #elif defined(TARGET_SPARC) |
| 1209 | info->value->has_pc = true; |
| 1210 | info->value->pc = env->pc; |
| 1211 | info->value->has_npc = true; |
| 1212 | info->value->npc = env->npc; |
| 1213 | #elif defined(TARGET_MIPS) |
| 1214 | info->value->has_PC = true; |
| 1215 | info->value->PC = env->active_tc.PC; |
| 1216 | #endif |
| 1217 | |
| 1218 | /* XXX: waiting for the qapi to support GSList */ |
| 1219 | if (!cur_item) { |
| 1220 | head = cur_item = info; |
| 1221 | } else { |
| 1222 | cur_item->next = info; |
| 1223 | cur_item = info; |
| 1224 | } |
| 1225 | } |
| 1226 | |
| 1227 | return head; |
| 1228 | } |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1229 | |
| 1230 | void qmp_memsave(int64_t addr, int64_t size, const char *filename, |
| 1231 | bool has_cpu, int64_t cpu_index, Error **errp) |
| 1232 | { |
| 1233 | FILE *f; |
| 1234 | uint32_t l; |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1235 | CPUArchState *env; |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1236 | uint8_t buf[1024]; |
| 1237 | |
| 1238 | if (!has_cpu) { |
| 1239 | cpu_index = 0; |
| 1240 | } |
| 1241 | |
| 1242 | for (env = first_cpu; env; env = env->next_cpu) { |
| 1243 | if (cpu_index == env->cpu_index) { |
| 1244 | break; |
| 1245 | } |
| 1246 | } |
| 1247 | |
| 1248 | if (env == NULL) { |
| 1249 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index", |
| 1250 | "a CPU number"); |
| 1251 | return; |
| 1252 | } |
| 1253 | |
| 1254 | f = fopen(filename, "wb"); |
| 1255 | if (!f) { |
| 1256 | error_set(errp, QERR_OPEN_FILE_FAILED, filename); |
| 1257 | return; |
| 1258 | } |
| 1259 | |
| 1260 | while (size != 0) { |
| 1261 | l = sizeof(buf); |
| 1262 | if (l > size) |
| 1263 | l = size; |
| 1264 | cpu_memory_rw_debug(env, addr, buf, l, 0); |
| 1265 | if (fwrite(buf, 1, l, f) != l) { |
| 1266 | error_set(errp, QERR_IO_ERROR); |
| 1267 | goto exit; |
| 1268 | } |
| 1269 | addr += l; |
| 1270 | size -= l; |
| 1271 | } |
| 1272 | |
| 1273 | exit: |
| 1274 | fclose(f); |
| 1275 | } |
Luiz Capitulino | 6d3962b | 2011-11-22 17:26:46 -0200 | [diff] [blame] | 1276 | |
| 1277 | void qmp_pmemsave(int64_t addr, int64_t size, const char *filename, |
| 1278 | Error **errp) |
| 1279 | { |
| 1280 | FILE *f; |
| 1281 | uint32_t l; |
| 1282 | uint8_t buf[1024]; |
| 1283 | |
| 1284 | f = fopen(filename, "wb"); |
| 1285 | if (!f) { |
| 1286 | error_set(errp, QERR_OPEN_FILE_FAILED, filename); |
| 1287 | return; |
| 1288 | } |
| 1289 | |
| 1290 | while (size != 0) { |
| 1291 | l = sizeof(buf); |
| 1292 | if (l > size) |
| 1293 | l = size; |
| 1294 | cpu_physical_memory_rw(addr, buf, l, 0); |
| 1295 | if (fwrite(buf, 1, l, f) != l) { |
| 1296 | error_set(errp, QERR_IO_ERROR); |
| 1297 | goto exit; |
| 1298 | } |
| 1299 | addr += l; |
| 1300 | size -= l; |
| 1301 | } |
| 1302 | |
| 1303 | exit: |
| 1304 | fclose(f); |
| 1305 | } |
Luiz Capitulino | ab49ab5 | 2011-11-23 12:55:53 -0200 | [diff] [blame] | 1306 | |
| 1307 | void qmp_inject_nmi(Error **errp) |
| 1308 | { |
| 1309 | #if defined(TARGET_I386) |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1310 | CPUArchState *env; |
Luiz Capitulino | ab49ab5 | 2011-11-23 12:55:53 -0200 | [diff] [blame] | 1311 | |
| 1312 | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
Jan Kiszka | 02c0919 | 2011-10-18 00:00:06 +0800 | [diff] [blame] | 1313 | if (!env->apic_state) { |
| 1314 | cpu_interrupt(env, CPU_INTERRUPT_NMI); |
| 1315 | } else { |
| 1316 | apic_deliver_nmi(env->apic_state); |
| 1317 | } |
Luiz Capitulino | ab49ab5 | 2011-11-23 12:55:53 -0200 | [diff] [blame] | 1318 | } |
| 1319 | #else |
| 1320 | error_set(errp, QERR_UNSUPPORTED); |
| 1321 | #endif |
| 1322 | } |