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 | |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 28 | #include "monitor/monitor.h" |
Wenchao Xia | a4e15de | 2014-06-18 08:43:36 +0200 | [diff] [blame] | 29 | #include "qapi/qmp/qerror.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 30 | #include "sysemu/sysemu.h" |
Paolo Bonzini | 022c62c | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 31 | #include "exec/gdbstub.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 32 | #include "sysemu/dma.h" |
| 33 | #include "sysemu/kvm.h" |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 34 | #include "qmp-commands.h" |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 35 | |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 36 | #include "qemu/thread.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 37 | #include "sysemu/cpus.h" |
| 38 | #include "sysemu/qtest.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 39 | #include "qemu/main-loop.h" |
| 40 | #include "qemu/bitmap.h" |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 41 | #include "qemu/seqlock.h" |
Wenchao Xia | a4e15de | 2014-06-18 08:43:36 +0200 | [diff] [blame] | 42 | #include "qapi-event.h" |
Alexey Kardashevskiy | 9cb805f | 2014-08-20 22:16:33 +1000 | [diff] [blame] | 43 | #include "hw/nmi.h" |
Jan Kiszka | 0ff0fc1 | 2011-06-23 10:15:55 +0200 | [diff] [blame] | 44 | |
| 45 | #ifndef _WIN32 |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 46 | #include "qemu/compatfd.h" |
Jan Kiszka | 0ff0fc1 | 2011-06-23 10:15:55 +0200 | [diff] [blame] | 47 | #endif |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 48 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 49 | #ifdef CONFIG_LINUX |
| 50 | |
| 51 | #include <sys/prctl.h> |
| 52 | |
Marcelo Tosatti | c0532a7 | 2010-10-11 15:31:21 -0300 | [diff] [blame] | 53 | #ifndef PR_MCE_KILL |
| 54 | #define PR_MCE_KILL 33 |
| 55 | #endif |
| 56 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 57 | #ifndef PR_MCE_KILL_SET |
| 58 | #define PR_MCE_KILL_SET 1 |
| 59 | #endif |
| 60 | |
| 61 | #ifndef PR_MCE_KILL_EARLY |
| 62 | #define PR_MCE_KILL_EARLY 1 |
| 63 | #endif |
| 64 | |
| 65 | #endif /* CONFIG_LINUX */ |
| 66 | |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 67 | static CPUState *next_cpu; |
Sebastian Tanase | 27498be | 2014-07-25 11:56:33 +0200 | [diff] [blame] | 68 | int64_t max_delay; |
| 69 | int64_t max_advance; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 70 | |
Tiejun Chen | 321bc0b | 2013-08-02 09:43:09 +0800 | [diff] [blame] | 71 | bool cpu_is_stopped(CPUState *cpu) |
| 72 | { |
| 73 | return cpu->stopped || !runstate_is_running(); |
| 74 | } |
| 75 | |
Andreas Färber | a98ae1d | 2013-05-26 23:21:08 +0200 | [diff] [blame] | 76 | static bool cpu_thread_is_idle(CPUState *cpu) |
Peter Maydell | ac873f1 | 2012-07-19 16:52:27 +0100 | [diff] [blame] | 77 | { |
Andreas Färber | c64ca81 | 2012-05-03 02:11:45 +0200 | [diff] [blame] | 78 | if (cpu->stop || cpu->queued_work_first) { |
Peter Maydell | ac873f1 | 2012-07-19 16:52:27 +0100 | [diff] [blame] | 79 | return false; |
| 80 | } |
Tiejun Chen | 321bc0b | 2013-08-02 09:43:09 +0800 | [diff] [blame] | 81 | if (cpu_is_stopped(cpu)) { |
Peter Maydell | ac873f1 | 2012-07-19 16:52:27 +0100 | [diff] [blame] | 82 | return true; |
| 83 | } |
Andreas Färber | 8c2e1b0 | 2013-08-25 18:53:55 +0200 | [diff] [blame] | 84 | if (!cpu->halted || cpu_has_work(cpu) || |
Alexander Graf | 215e79c | 2013-04-24 22:24:12 +0200 | [diff] [blame] | 85 | kvm_halt_in_kernel()) { |
Peter Maydell | ac873f1 | 2012-07-19 16:52:27 +0100 | [diff] [blame] | 86 | return false; |
| 87 | } |
| 88 | return true; |
| 89 | } |
| 90 | |
| 91 | static bool all_cpu_threads_idle(void) |
| 92 | { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 93 | CPUState *cpu; |
Peter Maydell | ac873f1 | 2012-07-19 16:52:27 +0100 | [diff] [blame] | 94 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 95 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 96 | if (!cpu_thread_is_idle(cpu)) { |
Peter Maydell | ac873f1 | 2012-07-19 16:52:27 +0100 | [diff] [blame] | 97 | return false; |
| 98 | } |
| 99 | } |
| 100 | return true; |
| 101 | } |
| 102 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 103 | /***********************************************************/ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 104 | /* guest cycle counter */ |
| 105 | |
Paolo Bonzini | a3270e1 | 2013-10-07 17:18:15 +0200 | [diff] [blame] | 106 | /* Protected by TimersState seqlock */ |
| 107 | |
Sebastian Tanase | 7146839 | 2014-07-23 11:47:50 +0200 | [diff] [blame] | 108 | static int64_t vm_clock_warp_start = -1; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 109 | /* Conversion factor from emulated instructions to virtual clock ticks. */ |
| 110 | static int icount_time_shift; |
| 111 | /* Arbitrarily pick 1MIPS as the minimum allowable speed. */ |
| 112 | #define MAX_ICOUNT_SHIFT 10 |
Paolo Bonzini | a3270e1 | 2013-10-07 17:18:15 +0200 | [diff] [blame] | 113 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 114 | static QEMUTimer *icount_rt_timer; |
| 115 | static QEMUTimer *icount_vm_timer; |
| 116 | static QEMUTimer *icount_warp_timer; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 117 | |
| 118 | typedef struct TimersState { |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 119 | /* Protected by BQL. */ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 120 | int64_t cpu_ticks_prev; |
| 121 | int64_t cpu_ticks_offset; |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 122 | |
| 123 | /* cpu_clock_offset can be read out of BQL, so protect it with |
| 124 | * this lock. |
| 125 | */ |
| 126 | QemuSeqLock vm_clock_seqlock; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 127 | int64_t cpu_clock_offset; |
| 128 | int32_t cpu_ticks_enabled; |
| 129 | int64_t dummy; |
KONRAD Frederic | c96778b | 2014-08-01 01:37:09 +0200 | [diff] [blame] | 130 | |
| 131 | /* Compensate for varying guest execution speed. */ |
| 132 | int64_t qemu_icount_bias; |
| 133 | /* Only written by TCG thread */ |
| 134 | int64_t qemu_icount; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 135 | } TimersState; |
| 136 | |
Liu Ping Fan | d9cd400 | 2013-07-21 08:43:00 +0000 | [diff] [blame] | 137 | static TimersState timers_state; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 138 | |
| 139 | /* Return the virtual CPU time, based on the instruction counter. */ |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 140 | static int64_t cpu_get_icount_locked(void) |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 141 | { |
| 142 | int64_t icount; |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 143 | CPUState *cpu = current_cpu; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 144 | |
KONRAD Frederic | c96778b | 2014-08-01 01:37:09 +0200 | [diff] [blame] | 145 | icount = timers_state.qemu_icount; |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 146 | if (cpu) { |
Andreas Färber | 99df7dc | 2013-08-26 05:15:23 +0200 | [diff] [blame] | 147 | if (!cpu_can_do_io(cpu)) { |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 148 | fprintf(stderr, "Bad clock read\n"); |
| 149 | } |
Andreas Färber | 28ecfd7 | 2013-08-26 05:51:49 +0200 | [diff] [blame] | 150 | icount -= (cpu->icount_decr.u16.low + cpu->icount_extra); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 151 | } |
KONRAD Frederic | 3f03131 | 2014-08-01 01:37:15 +0200 | [diff] [blame] | 152 | return timers_state.qemu_icount_bias + cpu_icount_to_ns(icount); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 153 | } |
| 154 | |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 155 | int64_t cpu_get_icount(void) |
| 156 | { |
| 157 | int64_t icount; |
| 158 | unsigned start; |
| 159 | |
| 160 | do { |
| 161 | start = seqlock_read_begin(&timers_state.vm_clock_seqlock); |
| 162 | icount = cpu_get_icount_locked(); |
| 163 | } while (seqlock_read_retry(&timers_state.vm_clock_seqlock, start)); |
| 164 | |
| 165 | return icount; |
| 166 | } |
| 167 | |
KONRAD Frederic | 3f03131 | 2014-08-01 01:37:15 +0200 | [diff] [blame] | 168 | int64_t cpu_icount_to_ns(int64_t icount) |
| 169 | { |
| 170 | return icount << icount_time_shift; |
| 171 | } |
| 172 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 173 | /* return the host CPU cycle counter and handle stop/restart */ |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 174 | /* Caller must hold the BQL */ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 175 | int64_t cpu_get_ticks(void) |
| 176 | { |
Paolo Bonzini | 5f3e310 | 2013-10-28 17:32:18 +0100 | [diff] [blame] | 177 | int64_t ticks; |
| 178 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 179 | if (use_icount) { |
| 180 | return cpu_get_icount(); |
| 181 | } |
Paolo Bonzini | 5f3e310 | 2013-10-28 17:32:18 +0100 | [diff] [blame] | 182 | |
| 183 | ticks = timers_state.cpu_ticks_offset; |
| 184 | if (timers_state.cpu_ticks_enabled) { |
| 185 | ticks += cpu_get_real_ticks(); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 186 | } |
Paolo Bonzini | 5f3e310 | 2013-10-28 17:32:18 +0100 | [diff] [blame] | 187 | |
| 188 | if (timers_state.cpu_ticks_prev > ticks) { |
| 189 | /* Note: non increasing ticks may happen if the host uses |
| 190 | software suspend */ |
| 191 | timers_state.cpu_ticks_offset += timers_state.cpu_ticks_prev - ticks; |
| 192 | ticks = timers_state.cpu_ticks_prev; |
| 193 | } |
| 194 | |
| 195 | timers_state.cpu_ticks_prev = ticks; |
| 196 | return ticks; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 197 | } |
| 198 | |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 199 | static int64_t cpu_get_clock_locked(void) |
| 200 | { |
Paolo Bonzini | 5f3e310 | 2013-10-28 17:32:18 +0100 | [diff] [blame] | 201 | int64_t ticks; |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 202 | |
Paolo Bonzini | 5f3e310 | 2013-10-28 17:32:18 +0100 | [diff] [blame] | 203 | ticks = timers_state.cpu_clock_offset; |
| 204 | if (timers_state.cpu_ticks_enabled) { |
| 205 | ticks += get_clock(); |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 206 | } |
| 207 | |
Paolo Bonzini | 5f3e310 | 2013-10-28 17:32:18 +0100 | [diff] [blame] | 208 | return ticks; |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 209 | } |
| 210 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 211 | /* return the host CPU monotonic timer and handle stop/restart */ |
| 212 | int64_t cpu_get_clock(void) |
| 213 | { |
| 214 | int64_t ti; |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 215 | unsigned start; |
| 216 | |
| 217 | do { |
| 218 | start = seqlock_read_begin(&timers_state.vm_clock_seqlock); |
| 219 | ti = cpu_get_clock_locked(); |
| 220 | } while (seqlock_read_retry(&timers_state.vm_clock_seqlock, start)); |
| 221 | |
| 222 | return ti; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 223 | } |
| 224 | |
Sebastian Tanase | c2aa5f8 | 2014-07-25 11:56:31 +0200 | [diff] [blame] | 225 | /* return the offset between the host clock and virtual CPU clock */ |
| 226 | int64_t cpu_get_clock_offset(void) |
| 227 | { |
| 228 | int64_t ti; |
| 229 | unsigned start; |
| 230 | |
| 231 | do { |
| 232 | start = seqlock_read_begin(&timers_state.vm_clock_seqlock); |
| 233 | ti = timers_state.cpu_clock_offset; |
| 234 | if (!timers_state.cpu_ticks_enabled) { |
| 235 | ti -= get_clock(); |
| 236 | } |
| 237 | } while (seqlock_read_retry(&timers_state.vm_clock_seqlock, start)); |
| 238 | |
| 239 | return -ti; |
| 240 | } |
| 241 | |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 242 | /* enable cpu_get_ticks() |
| 243 | * Caller must hold BQL which server as mutex for vm_clock_seqlock. |
| 244 | */ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 245 | void cpu_enable_ticks(void) |
| 246 | { |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 247 | /* Here, the really thing protected by seqlock is cpu_clock_offset. */ |
| 248 | seqlock_write_lock(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 249 | if (!timers_state.cpu_ticks_enabled) { |
| 250 | timers_state.cpu_ticks_offset -= cpu_get_real_ticks(); |
| 251 | timers_state.cpu_clock_offset -= get_clock(); |
| 252 | timers_state.cpu_ticks_enabled = 1; |
| 253 | } |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 254 | seqlock_write_unlock(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 255 | } |
| 256 | |
| 257 | /* disable cpu_get_ticks() : the clock is stopped. You must not call |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 258 | * cpu_get_ticks() after that. |
| 259 | * Caller must hold BQL which server as mutex for vm_clock_seqlock. |
| 260 | */ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 261 | void cpu_disable_ticks(void) |
| 262 | { |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 263 | /* Here, the really thing protected by seqlock is cpu_clock_offset. */ |
| 264 | seqlock_write_lock(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 265 | if (timers_state.cpu_ticks_enabled) { |
Paolo Bonzini | 5f3e310 | 2013-10-28 17:32:18 +0100 | [diff] [blame] | 266 | timers_state.cpu_ticks_offset += cpu_get_real_ticks(); |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 267 | timers_state.cpu_clock_offset = cpu_get_clock_locked(); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 268 | timers_state.cpu_ticks_enabled = 0; |
| 269 | } |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 270 | seqlock_write_unlock(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | /* Correlation between real and virtual time is always going to be |
| 274 | fairly approximate, so ignore small variation. |
| 275 | When the guest is idle real and virtual time will be aligned in |
| 276 | the IO wait loop. */ |
| 277 | #define ICOUNT_WOBBLE (get_ticks_per_sec() / 10) |
| 278 | |
| 279 | static void icount_adjust(void) |
| 280 | { |
| 281 | int64_t cur_time; |
| 282 | int64_t cur_icount; |
| 283 | int64_t delta; |
Paolo Bonzini | a3270e1 | 2013-10-07 17:18:15 +0200 | [diff] [blame] | 284 | |
| 285 | /* Protected by TimersState mutex. */ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 286 | static int64_t last_delta; |
Paolo Bonzini | 468cc7c | 2013-10-07 17:21:51 +0200 | [diff] [blame] | 287 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 288 | /* If the VM is not running, then do nothing. */ |
| 289 | if (!runstate_is_running()) { |
| 290 | return; |
| 291 | } |
Paolo Bonzini | 468cc7c | 2013-10-07 17:21:51 +0200 | [diff] [blame] | 292 | |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 293 | seqlock_write_lock(&timers_state.vm_clock_seqlock); |
| 294 | cur_time = cpu_get_clock_locked(); |
| 295 | cur_icount = cpu_get_icount_locked(); |
Paolo Bonzini | 468cc7c | 2013-10-07 17:21:51 +0200 | [diff] [blame] | 296 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 297 | delta = cur_icount - cur_time; |
| 298 | /* FIXME: This is a very crude algorithm, somewhat prone to oscillation. */ |
| 299 | if (delta > 0 |
| 300 | && last_delta + ICOUNT_WOBBLE < delta * 2 |
| 301 | && icount_time_shift > 0) { |
| 302 | /* The guest is getting too far ahead. Slow time down. */ |
| 303 | icount_time_shift--; |
| 304 | } |
| 305 | if (delta < 0 |
| 306 | && last_delta - ICOUNT_WOBBLE > delta * 2 |
| 307 | && icount_time_shift < MAX_ICOUNT_SHIFT) { |
| 308 | /* The guest is getting too far behind. Speed time up. */ |
| 309 | icount_time_shift++; |
| 310 | } |
| 311 | last_delta = delta; |
KONRAD Frederic | c96778b | 2014-08-01 01:37:09 +0200 | [diff] [blame] | 312 | timers_state.qemu_icount_bias = cur_icount |
| 313 | - (timers_state.qemu_icount << icount_time_shift); |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 314 | seqlock_write_unlock(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 315 | } |
| 316 | |
| 317 | static void icount_adjust_rt(void *opaque) |
| 318 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 319 | timer_mod(icount_rt_timer, |
| 320 | qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 321 | icount_adjust(); |
| 322 | } |
| 323 | |
| 324 | static void icount_adjust_vm(void *opaque) |
| 325 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 326 | timer_mod(icount_vm_timer, |
| 327 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + |
| 328 | get_ticks_per_sec() / 10); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 329 | icount_adjust(); |
| 330 | } |
| 331 | |
| 332 | static int64_t qemu_icount_round(int64_t count) |
| 333 | { |
| 334 | return (count + (1 << icount_time_shift) - 1) >> icount_time_shift; |
| 335 | } |
| 336 | |
| 337 | static void icount_warp_rt(void *opaque) |
| 338 | { |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 339 | /* The icount_warp_timer is rescheduled soon after vm_clock_warp_start |
| 340 | * changes from -1 to another value, so the race here is okay. |
| 341 | */ |
| 342 | if (atomic_read(&vm_clock_warp_start) == -1) { |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 343 | return; |
| 344 | } |
| 345 | |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 346 | seqlock_write_lock(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 347 | if (runstate_is_running()) { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 348 | int64_t clock = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); |
Paolo Bonzini | 8ed961d | 2013-10-07 17:26:07 +0200 | [diff] [blame] | 349 | int64_t warp_delta; |
| 350 | |
| 351 | warp_delta = clock - vm_clock_warp_start; |
| 352 | if (use_icount == 2) { |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 353 | /* |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 354 | * In adaptive mode, do not let QEMU_CLOCK_VIRTUAL run too |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 355 | * far ahead of real time. |
| 356 | */ |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 357 | int64_t cur_time = cpu_get_clock_locked(); |
| 358 | int64_t cur_icount = cpu_get_icount_locked(); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 359 | int64_t delta = cur_time - cur_icount; |
Paolo Bonzini | 8ed961d | 2013-10-07 17:26:07 +0200 | [diff] [blame] | 360 | warp_delta = MIN(warp_delta, delta); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 361 | } |
KONRAD Frederic | c96778b | 2014-08-01 01:37:09 +0200 | [diff] [blame] | 362 | timers_state.qemu_icount_bias += warp_delta; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 363 | } |
| 364 | vm_clock_warp_start = -1; |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 365 | seqlock_write_unlock(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 8ed961d | 2013-10-07 17:26:07 +0200 | [diff] [blame] | 366 | |
| 367 | if (qemu_clock_expired(QEMU_CLOCK_VIRTUAL)) { |
| 368 | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
| 369 | } |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 370 | } |
| 371 | |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 372 | void qtest_clock_warp(int64_t dest) |
| 373 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 374 | int64_t clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 375 | assert(qtest_enabled()); |
| 376 | while (clock < dest) { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 377 | int64_t deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
Sergey Fedorov | c9299e2 | 2014-06-10 13:10:28 +0400 | [diff] [blame] | 378 | int64_t warp = qemu_soonest_timeout(dest - clock, deadline); |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 379 | seqlock_write_lock(&timers_state.vm_clock_seqlock); |
KONRAD Frederic | c96778b | 2014-08-01 01:37:09 +0200 | [diff] [blame] | 380 | timers_state.qemu_icount_bias += warp; |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 381 | seqlock_write_unlock(&timers_state.vm_clock_seqlock); |
| 382 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 383 | qemu_clock_run_timers(QEMU_CLOCK_VIRTUAL); |
| 384 | clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 385 | } |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 386 | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 387 | } |
| 388 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 389 | void qemu_clock_warp(QEMUClockType type) |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 390 | { |
Paolo Bonzini | ce78d18 | 2013-10-07 17:30:02 +0200 | [diff] [blame] | 391 | int64_t clock; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 392 | int64_t deadline; |
| 393 | |
| 394 | /* |
| 395 | * There are too many global variables to make the "warp" behavior |
| 396 | * applicable to other clocks. But a clock argument removes the |
| 397 | * need for if statements all over the place. |
| 398 | */ |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 399 | if (type != QEMU_CLOCK_VIRTUAL || !use_icount) { |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 400 | return; |
| 401 | } |
| 402 | |
| 403 | /* |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 404 | * If the CPUs have been sleeping, advance QEMU_CLOCK_VIRTUAL timer now. |
| 405 | * This ensures that the deadline for the timer is computed correctly below. |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 406 | * This also makes sure that the insn counter is synchronized before the |
| 407 | * CPU starts running, in case the CPU is woken by an event other than |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 408 | * the earliest QEMU_CLOCK_VIRTUAL timer. |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 409 | */ |
| 410 | icount_warp_rt(NULL); |
Paolo Bonzini | ce78d18 | 2013-10-07 17:30:02 +0200 | [diff] [blame] | 411 | timer_del(icount_warp_timer); |
| 412 | if (!all_cpu_threads_idle()) { |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 413 | return; |
| 414 | } |
| 415 | |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 416 | if (qtest_enabled()) { |
| 417 | /* When testing, qtest commands advance icount. */ |
| 418 | return; |
| 419 | } |
| 420 | |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 421 | /* We want to use the earliest deadline from ALL vm_clocks */ |
Paolo Bonzini | ce78d18 | 2013-10-07 17:30:02 +0200 | [diff] [blame] | 422 | clock = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 423 | deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
Paolo Bonzini | ce78d18 | 2013-10-07 17:30:02 +0200 | [diff] [blame] | 424 | if (deadline < 0) { |
| 425 | return; |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 426 | } |
| 427 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 428 | if (deadline > 0) { |
| 429 | /* |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 430 | * Ensure QEMU_CLOCK_VIRTUAL proceeds even when the virtual CPU goes to |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 431 | * sleep. Otherwise, the CPU might be waiting for a future timer |
| 432 | * interrupt to wake it up, but the interrupt never comes because |
| 433 | * the vCPU isn't running any insns and thus doesn't advance the |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 434 | * QEMU_CLOCK_VIRTUAL. |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 435 | * |
| 436 | * An extreme solution for this problem would be to never let VCPUs |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 437 | * sleep in icount mode if there is a pending QEMU_CLOCK_VIRTUAL |
| 438 | * timer; rather time could just advance to the next QEMU_CLOCK_VIRTUAL |
| 439 | * event. Instead, we do stop VCPUs and only advance QEMU_CLOCK_VIRTUAL |
| 440 | * after some e"real" time, (related to the time left until the next |
| 441 | * event) has passed. The QEMU_CLOCK_REALTIME timer will do this. |
| 442 | * This avoids that the warps are visible externally; for example, |
| 443 | * you will not be sending network packets continuously instead of |
| 444 | * every 100ms. |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 445 | */ |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 446 | seqlock_write_lock(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | ce78d18 | 2013-10-07 17:30:02 +0200 | [diff] [blame] | 447 | if (vm_clock_warp_start == -1 || vm_clock_warp_start > clock) { |
| 448 | vm_clock_warp_start = clock; |
| 449 | } |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 450 | seqlock_write_unlock(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | ce78d18 | 2013-10-07 17:30:02 +0200 | [diff] [blame] | 451 | timer_mod_anticipate(icount_warp_timer, clock + deadline); |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 452 | } else if (deadline == 0) { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 453 | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 454 | } |
| 455 | } |
| 456 | |
KONRAD Frederic | d09eae3 | 2014-08-01 01:37:10 +0200 | [diff] [blame] | 457 | static bool icount_state_needed(void *opaque) |
| 458 | { |
| 459 | return use_icount; |
| 460 | } |
| 461 | |
| 462 | /* |
| 463 | * This is a subsection for icount migration. |
| 464 | */ |
| 465 | static const VMStateDescription icount_vmstate_timers = { |
| 466 | .name = "timer/icount", |
| 467 | .version_id = 1, |
| 468 | .minimum_version_id = 1, |
| 469 | .fields = (VMStateField[]) { |
| 470 | VMSTATE_INT64(qemu_icount_bias, TimersState), |
| 471 | VMSTATE_INT64(qemu_icount, TimersState), |
| 472 | VMSTATE_END_OF_LIST() |
| 473 | } |
| 474 | }; |
| 475 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 476 | static const VMStateDescription vmstate_timers = { |
| 477 | .name = "timer", |
| 478 | .version_id = 2, |
| 479 | .minimum_version_id = 1, |
Juan Quintela | 35d0845 | 2014-04-16 16:01:33 +0200 | [diff] [blame] | 480 | .fields = (VMStateField[]) { |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 481 | VMSTATE_INT64(cpu_ticks_offset, TimersState), |
| 482 | VMSTATE_INT64(dummy, TimersState), |
| 483 | VMSTATE_INT64_V(cpu_clock_offset, TimersState, 2), |
| 484 | VMSTATE_END_OF_LIST() |
KONRAD Frederic | d09eae3 | 2014-08-01 01:37:10 +0200 | [diff] [blame] | 485 | }, |
| 486 | .subsections = (VMStateSubsection[]) { |
| 487 | { |
| 488 | .vmsd = &icount_vmstate_timers, |
| 489 | .needed = icount_state_needed, |
| 490 | }, { |
| 491 | /* empty */ |
| 492 | } |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 493 | } |
| 494 | }; |
| 495 | |
Pavel Dovgalyuk | 4603ea0 | 2014-09-01 09:34:49 +0400 | [diff] [blame] | 496 | void cpu_ticks_init(void) |
| 497 | { |
| 498 | seqlock_init(&timers_state.vm_clock_seqlock, NULL); |
| 499 | vmstate_register(NULL, 0, &vmstate_timers, &timers_state); |
| 500 | } |
| 501 | |
Sebastian Tanase | 1ad9580 | 2014-07-25 11:56:28 +0200 | [diff] [blame] | 502 | void configure_icount(QemuOpts *opts, Error **errp) |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 503 | { |
Sebastian Tanase | 1ad9580 | 2014-07-25 11:56:28 +0200 | [diff] [blame] | 504 | const char *option; |
Sebastian Tanase | a8bfac3 | 2014-07-25 11:56:29 +0200 | [diff] [blame] | 505 | char *rem_str = NULL; |
Sebastian Tanase | 1ad9580 | 2014-07-25 11:56:28 +0200 | [diff] [blame] | 506 | |
Sebastian Tanase | 1ad9580 | 2014-07-25 11:56:28 +0200 | [diff] [blame] | 507 | option = qemu_opt_get(opts, "shift"); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 508 | if (!option) { |
Sebastian Tanase | a8bfac3 | 2014-07-25 11:56:29 +0200 | [diff] [blame] | 509 | if (qemu_opt_get(opts, "align") != NULL) { |
| 510 | error_setg(errp, "Please specify shift option when using align"); |
| 511 | } |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 512 | return; |
| 513 | } |
Sebastian Tanase | a8bfac3 | 2014-07-25 11:56:29 +0200 | [diff] [blame] | 514 | icount_align_option = qemu_opt_get_bool(opts, "align", false); |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 515 | icount_warp_timer = timer_new_ns(QEMU_CLOCK_REALTIME, |
| 516 | icount_warp_rt, NULL); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 517 | if (strcmp(option, "auto") != 0) { |
Sebastian Tanase | a8bfac3 | 2014-07-25 11:56:29 +0200 | [diff] [blame] | 518 | errno = 0; |
| 519 | icount_time_shift = strtol(option, &rem_str, 0); |
| 520 | if (errno != 0 || *rem_str != '\0' || !strlen(option)) { |
| 521 | error_setg(errp, "icount: Invalid shift value"); |
| 522 | } |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 523 | use_icount = 1; |
| 524 | return; |
Sebastian Tanase | a8bfac3 | 2014-07-25 11:56:29 +0200 | [diff] [blame] | 525 | } else if (icount_align_option) { |
| 526 | error_setg(errp, "shift=auto and align=on are incompatible"); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 527 | } |
| 528 | |
| 529 | use_icount = 2; |
| 530 | |
| 531 | /* 125MIPS seems a reasonable initial guess at the guest speed. |
| 532 | It will be corrected fairly quickly anyway. */ |
| 533 | icount_time_shift = 3; |
| 534 | |
| 535 | /* Have both realtime and virtual time triggers for speed adjustment. |
| 536 | The realtime trigger catches emulated time passing too slowly, |
| 537 | the virtual time trigger catches emulated time passing too fast. |
| 538 | Realtime triggers occur even when idle, so use them less frequently |
| 539 | than VM triggers. */ |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 540 | icount_rt_timer = timer_new_ms(QEMU_CLOCK_REALTIME, |
| 541 | icount_adjust_rt, NULL); |
| 542 | timer_mod(icount_rt_timer, |
| 543 | qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000); |
| 544 | icount_vm_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, |
| 545 | icount_adjust_vm, NULL); |
| 546 | timer_mod(icount_vm_timer, |
| 547 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + |
| 548 | get_ticks_per_sec() / 10); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 549 | } |
| 550 | |
| 551 | /***********************************************************/ |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 552 | void hw_error(const char *fmt, ...) |
| 553 | { |
| 554 | va_list ap; |
Andreas Färber | 55e5c28 | 2012-12-17 06:18:02 +0100 | [diff] [blame] | 555 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 556 | |
| 557 | va_start(ap, fmt); |
| 558 | fprintf(stderr, "qemu: hardware error: "); |
| 559 | vfprintf(stderr, fmt, ap); |
| 560 | fprintf(stderr, "\n"); |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 561 | CPU_FOREACH(cpu) { |
Andreas Färber | 55e5c28 | 2012-12-17 06:18:02 +0100 | [diff] [blame] | 562 | fprintf(stderr, "CPU #%d:\n", cpu->cpu_index); |
Andreas Färber | 878096e | 2013-05-27 01:33:50 +0200 | [diff] [blame] | 563 | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_FPU); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 564 | } |
| 565 | va_end(ap); |
| 566 | abort(); |
| 567 | } |
| 568 | |
| 569 | void cpu_synchronize_all_states(void) |
| 570 | { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 571 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 572 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 573 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 574 | cpu_synchronize_state(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 575 | } |
| 576 | } |
| 577 | |
| 578 | void cpu_synchronize_all_post_reset(void) |
| 579 | { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 580 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 581 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 582 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 583 | cpu_synchronize_post_reset(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 584 | } |
| 585 | } |
| 586 | |
| 587 | void cpu_synchronize_all_post_init(void) |
| 588 | { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 589 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 590 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 591 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 592 | cpu_synchronize_post_init(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 593 | } |
| 594 | } |
| 595 | |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 596 | static int do_vm_stop(RunState state) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 597 | { |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 598 | int ret = 0; |
| 599 | |
Luiz Capitulino | 1354869 | 2011-07-29 15:36:43 -0300 | [diff] [blame] | 600 | if (runstate_is_running()) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 601 | cpu_disable_ticks(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 602 | pause_all_vcpus(); |
Luiz Capitulino | f5bbfba | 2011-07-29 15:04:45 -0300 | [diff] [blame] | 603 | runstate_set(state); |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 604 | vm_state_notify(0, state); |
Wenchao Xia | a4e15de | 2014-06-18 08:43:36 +0200 | [diff] [blame] | 605 | qapi_event_send_stop(&error_abort); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 606 | } |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 607 | |
Kevin Wolf | 594a45c | 2013-07-18 14:52:19 +0200 | [diff] [blame] | 608 | bdrv_drain_all(); |
| 609 | ret = bdrv_flush_all(); |
| 610 | |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 611 | return ret; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 612 | } |
| 613 | |
Andreas Färber | a1fcaa7 | 2012-05-02 23:42:26 +0200 | [diff] [blame] | 614 | static bool cpu_can_run(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 615 | { |
Andreas Färber | 4fdeee7 | 2012-05-02 23:10:09 +0200 | [diff] [blame] | 616 | if (cpu->stop) { |
Andreas Färber | a1fcaa7 | 2012-05-02 23:42:26 +0200 | [diff] [blame] | 617 | return false; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 618 | } |
Tiejun Chen | 321bc0b | 2013-08-02 09:43:09 +0800 | [diff] [blame] | 619 | if (cpu_is_stopped(cpu)) { |
Andreas Färber | a1fcaa7 | 2012-05-02 23:42:26 +0200 | [diff] [blame] | 620 | return false; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 621 | } |
Andreas Färber | a1fcaa7 | 2012-05-02 23:42:26 +0200 | [diff] [blame] | 622 | return true; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 623 | } |
| 624 | |
Andreas Färber | 9132504 | 2013-05-27 02:07:49 +0200 | [diff] [blame] | 625 | static void cpu_handle_guest_debug(CPUState *cpu) |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 626 | { |
Andreas Färber | 64f6b34 | 2013-05-27 02:06:09 +0200 | [diff] [blame] | 627 | gdb_set_stop_cpu(cpu); |
Jan Kiszka | 8cf7171 | 2011-02-07 12:19:16 +0100 | [diff] [blame] | 628 | qemu_system_debug_request(); |
Andreas Färber | f324e76 | 2012-05-02 23:26:21 +0200 | [diff] [blame] | 629 | cpu->stopped = true; |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 630 | } |
| 631 | |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 632 | static void cpu_signal(int sig) |
| 633 | { |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 634 | if (current_cpu) { |
| 635 | cpu_exit(current_cpu); |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 636 | } |
| 637 | exit_request = 1; |
| 638 | } |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 639 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 640 | #ifdef CONFIG_LINUX |
| 641 | static void sigbus_reraise(void) |
| 642 | { |
| 643 | sigset_t set; |
| 644 | struct sigaction action; |
| 645 | |
| 646 | memset(&action, 0, sizeof(action)); |
| 647 | action.sa_handler = SIG_DFL; |
| 648 | if (!sigaction(SIGBUS, &action, NULL)) { |
| 649 | raise(SIGBUS); |
| 650 | sigemptyset(&set); |
| 651 | sigaddset(&set, SIGBUS); |
| 652 | sigprocmask(SIG_UNBLOCK, &set, NULL); |
| 653 | } |
| 654 | perror("Failed to re-raise SIGBUS!\n"); |
| 655 | abort(); |
| 656 | } |
| 657 | |
| 658 | static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo, |
| 659 | void *ctx) |
| 660 | { |
| 661 | if (kvm_on_sigbus(siginfo->ssi_code, |
| 662 | (void *)(intptr_t)siginfo->ssi_addr)) { |
| 663 | sigbus_reraise(); |
| 664 | } |
| 665 | } |
| 666 | |
| 667 | static void qemu_init_sigbus(void) |
| 668 | { |
| 669 | struct sigaction action; |
| 670 | |
| 671 | memset(&action, 0, sizeof(action)); |
| 672 | action.sa_flags = SA_SIGINFO; |
| 673 | action.sa_sigaction = (void (*)(int, siginfo_t*, void*))sigbus_handler; |
| 674 | sigaction(SIGBUS, &action, NULL); |
| 675 | |
| 676 | prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0); |
| 677 | } |
| 678 | |
Andreas Färber | 290adf3 | 2013-01-17 09:30:27 +0100 | [diff] [blame] | 679 | static void qemu_kvm_eat_signals(CPUState *cpu) |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 680 | { |
| 681 | struct timespec ts = { 0, 0 }; |
| 682 | siginfo_t siginfo; |
| 683 | sigset_t waitset; |
| 684 | sigset_t chkset; |
| 685 | int r; |
| 686 | |
| 687 | sigemptyset(&waitset); |
| 688 | sigaddset(&waitset, SIG_IPI); |
| 689 | sigaddset(&waitset, SIGBUS); |
| 690 | |
| 691 | do { |
| 692 | r = sigtimedwait(&waitset, &siginfo, &ts); |
| 693 | if (r == -1 && !(errno == EAGAIN || errno == EINTR)) { |
| 694 | perror("sigtimedwait"); |
| 695 | exit(1); |
| 696 | } |
| 697 | |
| 698 | switch (r) { |
| 699 | case SIGBUS: |
Andreas Färber | 290adf3 | 2013-01-17 09:30:27 +0100 | [diff] [blame] | 700 | if (kvm_on_sigbus_vcpu(cpu, siginfo.si_code, siginfo.si_addr)) { |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 701 | sigbus_reraise(); |
| 702 | } |
| 703 | break; |
| 704 | default: |
| 705 | break; |
| 706 | } |
| 707 | |
| 708 | r = sigpending(&chkset); |
| 709 | if (r == -1) { |
| 710 | perror("sigpending"); |
| 711 | exit(1); |
| 712 | } |
| 713 | } while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS)); |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 714 | } |
| 715 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 716 | #else /* !CONFIG_LINUX */ |
| 717 | |
| 718 | static void qemu_init_sigbus(void) |
| 719 | { |
| 720 | } |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 721 | |
Andreas Färber | 290adf3 | 2013-01-17 09:30:27 +0100 | [diff] [blame] | 722 | static void qemu_kvm_eat_signals(CPUState *cpu) |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 723 | { |
| 724 | } |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 725 | #endif /* !CONFIG_LINUX */ |
| 726 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 727 | #ifndef _WIN32 |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 728 | static void dummy_signal(int sig) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 729 | { |
| 730 | } |
| 731 | |
Andreas Färber | 13618e0 | 2013-05-26 23:41:00 +0200 | [diff] [blame] | 732 | static void qemu_kvm_init_cpu_signals(CPUState *cpu) |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 733 | { |
| 734 | int r; |
| 735 | sigset_t set; |
| 736 | struct sigaction sigact; |
| 737 | |
| 738 | memset(&sigact, 0, sizeof(sigact)); |
| 739 | sigact.sa_handler = dummy_signal; |
| 740 | sigaction(SIG_IPI, &sigact, NULL); |
| 741 | |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 742 | pthread_sigmask(SIG_BLOCK, NULL, &set); |
| 743 | sigdelset(&set, SIG_IPI); |
| 744 | sigdelset(&set, SIGBUS); |
Andreas Färber | 491d6e8 | 2013-05-26 23:38:10 +0200 | [diff] [blame] | 745 | r = kvm_set_signal_mask(cpu, &set); |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 746 | if (r) { |
| 747 | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r)); |
| 748 | exit(1); |
| 749 | } |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 750 | } |
| 751 | |
| 752 | static void qemu_tcg_init_cpu_signals(void) |
| 753 | { |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 754 | sigset_t set; |
| 755 | struct sigaction sigact; |
| 756 | |
| 757 | memset(&sigact, 0, sizeof(sigact)); |
| 758 | sigact.sa_handler = cpu_signal; |
| 759 | sigaction(SIG_IPI, &sigact, NULL); |
| 760 | |
| 761 | sigemptyset(&set); |
| 762 | sigaddset(&set, SIG_IPI); |
| 763 | pthread_sigmask(SIG_UNBLOCK, &set, NULL); |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 764 | } |
| 765 | |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 766 | #else /* _WIN32 */ |
Andreas Färber | 13618e0 | 2013-05-26 23:41:00 +0200 | [diff] [blame] | 767 | static void qemu_kvm_init_cpu_signals(CPUState *cpu) |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 768 | { |
| 769 | abort(); |
| 770 | } |
| 771 | |
| 772 | static void qemu_tcg_init_cpu_signals(void) |
| 773 | { |
| 774 | } |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 775 | #endif /* _WIN32 */ |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 776 | |
Stefan Weil | b2532d8 | 2012-09-27 07:41:42 +0200 | [diff] [blame] | 777 | static QemuMutex qemu_global_mutex; |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 778 | static QemuCond qemu_io_proceeded_cond; |
| 779 | static bool iothread_requesting_mutex; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 780 | |
| 781 | static QemuThread io_thread; |
| 782 | |
| 783 | static QemuThread *tcg_cpu_thread; |
| 784 | static QemuCond *tcg_halt_cond; |
| 785 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 786 | /* cpu creation */ |
| 787 | static QemuCond qemu_cpu_cond; |
| 788 | /* system init */ |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 789 | static QemuCond qemu_pause_cond; |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 790 | static QemuCond qemu_work_cond; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 791 | |
Paolo Bonzini | d3b12f5 | 2011-09-13 10:30:52 +0200 | [diff] [blame] | 792 | void qemu_init_cpu_loop(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 793 | { |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 794 | qemu_init_sigbus(); |
Anthony Liguori | ed94592 | 2011-02-08 18:18:18 +0100 | [diff] [blame] | 795 | qemu_cond_init(&qemu_cpu_cond); |
Anthony Liguori | ed94592 | 2011-02-08 18:18:18 +0100 | [diff] [blame] | 796 | qemu_cond_init(&qemu_pause_cond); |
| 797 | qemu_cond_init(&qemu_work_cond); |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 798 | qemu_cond_init(&qemu_io_proceeded_cond); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 799 | qemu_mutex_init(&qemu_global_mutex); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 800 | |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 801 | qemu_thread_get_self(&io_thread); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 802 | } |
| 803 | |
Andreas Färber | f100f0b | 2012-05-03 14:58:47 +0200 | [diff] [blame] | 804 | void run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data) |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 805 | { |
| 806 | struct qemu_work_item wi; |
| 807 | |
Andreas Färber | 60e8257 | 2012-05-02 22:23:49 +0200 | [diff] [blame] | 808 | if (qemu_cpu_is_self(cpu)) { |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 809 | func(data); |
| 810 | return; |
| 811 | } |
| 812 | |
| 813 | wi.func = func; |
| 814 | wi.data = data; |
Chegu Vinod | 3c02270 | 2013-06-24 03:49:41 -0600 | [diff] [blame] | 815 | wi.free = false; |
Andreas Färber | c64ca81 | 2012-05-03 02:11:45 +0200 | [diff] [blame] | 816 | if (cpu->queued_work_first == NULL) { |
| 817 | cpu->queued_work_first = &wi; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 818 | } else { |
Andreas Färber | c64ca81 | 2012-05-03 02:11:45 +0200 | [diff] [blame] | 819 | cpu->queued_work_last->next = &wi; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 820 | } |
Andreas Färber | c64ca81 | 2012-05-03 02:11:45 +0200 | [diff] [blame] | 821 | cpu->queued_work_last = &wi; |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 822 | wi.next = NULL; |
| 823 | wi.done = false; |
| 824 | |
Andreas Färber | c08d742 | 2012-05-03 04:34:15 +0200 | [diff] [blame] | 825 | qemu_cpu_kick(cpu); |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 826 | while (!wi.done) { |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 827 | CPUState *self_cpu = current_cpu; |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 828 | |
| 829 | qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex); |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 830 | current_cpu = self_cpu; |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 831 | } |
| 832 | } |
| 833 | |
Chegu Vinod | 3c02270 | 2013-06-24 03:49:41 -0600 | [diff] [blame] | 834 | void async_run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data) |
| 835 | { |
| 836 | struct qemu_work_item *wi; |
| 837 | |
| 838 | if (qemu_cpu_is_self(cpu)) { |
| 839 | func(data); |
| 840 | return; |
| 841 | } |
| 842 | |
| 843 | wi = g_malloc0(sizeof(struct qemu_work_item)); |
| 844 | wi->func = func; |
| 845 | wi->data = data; |
| 846 | wi->free = true; |
| 847 | if (cpu->queued_work_first == NULL) { |
| 848 | cpu->queued_work_first = wi; |
| 849 | } else { |
| 850 | cpu->queued_work_last->next = wi; |
| 851 | } |
| 852 | cpu->queued_work_last = wi; |
| 853 | wi->next = NULL; |
| 854 | wi->done = false; |
| 855 | |
| 856 | qemu_cpu_kick(cpu); |
| 857 | } |
| 858 | |
Andreas Färber | 6d45b10 | 2012-05-03 02:13:22 +0200 | [diff] [blame] | 859 | static void flush_queued_work(CPUState *cpu) |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 860 | { |
| 861 | struct qemu_work_item *wi; |
| 862 | |
Andreas Färber | c64ca81 | 2012-05-03 02:11:45 +0200 | [diff] [blame] | 863 | if (cpu->queued_work_first == NULL) { |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 864 | return; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 865 | } |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 866 | |
Andreas Färber | c64ca81 | 2012-05-03 02:11:45 +0200 | [diff] [blame] | 867 | while ((wi = cpu->queued_work_first)) { |
| 868 | cpu->queued_work_first = wi->next; |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 869 | wi->func(wi->data); |
| 870 | wi->done = true; |
Chegu Vinod | 3c02270 | 2013-06-24 03:49:41 -0600 | [diff] [blame] | 871 | if (wi->free) { |
| 872 | g_free(wi); |
| 873 | } |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 874 | } |
Andreas Färber | c64ca81 | 2012-05-03 02:11:45 +0200 | [diff] [blame] | 875 | cpu->queued_work_last = NULL; |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 876 | qemu_cond_broadcast(&qemu_work_cond); |
| 877 | } |
| 878 | |
Andreas Färber | 509a0d7 | 2012-05-03 02:18:09 +0200 | [diff] [blame] | 879 | static void qemu_wait_io_event_common(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 880 | { |
Andreas Färber | 4fdeee7 | 2012-05-02 23:10:09 +0200 | [diff] [blame] | 881 | if (cpu->stop) { |
| 882 | cpu->stop = false; |
Andreas Färber | f324e76 | 2012-05-02 23:26:21 +0200 | [diff] [blame] | 883 | cpu->stopped = true; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 884 | qemu_cond_signal(&qemu_pause_cond); |
| 885 | } |
Andreas Färber | 6d45b10 | 2012-05-03 02:13:22 +0200 | [diff] [blame] | 886 | flush_queued_work(cpu); |
Andreas Färber | 216fc9a | 2012-05-02 17:49:49 +0200 | [diff] [blame] | 887 | cpu->thread_kicked = false; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 888 | } |
| 889 | |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 890 | static void qemu_tcg_wait_io_event(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 891 | { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 892 | CPUState *cpu; |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 893 | |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 894 | while (all_cpu_threads_idle()) { |
Paolo Bonzini | ab33fcd | 2011-04-13 10:03:44 +0200 | [diff] [blame] | 895 | /* Start accounting real time to the virtual clock if the CPUs |
| 896 | are idle. */ |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 897 | qemu_clock_warp(QEMU_CLOCK_VIRTUAL); |
Paolo Bonzini | 9705fbb | 2011-03-12 17:44:00 +0100 | [diff] [blame] | 898 | qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 899 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 900 | |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 901 | while (iothread_requesting_mutex) { |
| 902 | qemu_cond_wait(&qemu_io_proceeded_cond, &qemu_global_mutex); |
| 903 | } |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 904 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 905 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 906 | qemu_wait_io_event_common(cpu); |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 907 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 908 | } |
| 909 | |
Andreas Färber | fd529e8 | 2013-05-26 23:24:55 +0200 | [diff] [blame] | 910 | static void qemu_kvm_wait_io_event(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 911 | { |
Andreas Färber | a98ae1d | 2013-05-26 23:21:08 +0200 | [diff] [blame] | 912 | while (cpu_thread_is_idle(cpu)) { |
Andreas Färber | f5c121b | 2012-05-03 01:22:49 +0200 | [diff] [blame] | 913 | qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex); |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 914 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 915 | |
Andreas Färber | 290adf3 | 2013-01-17 09:30:27 +0100 | [diff] [blame] | 916 | qemu_kvm_eat_signals(cpu); |
Andreas Färber | 509a0d7 | 2012-05-03 02:18:09 +0200 | [diff] [blame] | 917 | qemu_wait_io_event_common(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 918 | } |
| 919 | |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 920 | static void *qemu_kvm_cpu_thread_fn(void *arg) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 921 | { |
Andreas Färber | 48a106b | 2013-05-27 02:20:39 +0200 | [diff] [blame] | 922 | CPUState *cpu = arg; |
Jan Kiszka | 84b4915 | 2011-02-01 22:15:50 +0100 | [diff] [blame] | 923 | int r; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 924 | |
Marcelo Tosatti | 6164e6d | 2010-03-23 13:37:13 -0300 | [diff] [blame] | 925 | qemu_mutex_lock(&qemu_global_mutex); |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 926 | qemu_thread_get_self(cpu->thread); |
Andreas Färber | 9f09e18 | 2012-05-03 06:59:07 +0200 | [diff] [blame] | 927 | cpu->thread_id = qemu_get_thread_id(); |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 928 | current_cpu = cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 929 | |
Andreas Färber | 504134d | 2012-12-17 06:38:45 +0100 | [diff] [blame] | 930 | r = kvm_init_vcpu(cpu); |
Jan Kiszka | 84b4915 | 2011-02-01 22:15:50 +0100 | [diff] [blame] | 931 | if (r < 0) { |
| 932 | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r)); |
| 933 | exit(1); |
| 934 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 935 | |
Andreas Färber | 13618e0 | 2013-05-26 23:41:00 +0200 | [diff] [blame] | 936 | qemu_kvm_init_cpu_signals(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 937 | |
| 938 | /* signal CPU creation */ |
Andreas Färber | 61a4621 | 2012-05-02 22:49:36 +0200 | [diff] [blame] | 939 | cpu->created = true; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 940 | qemu_cond_signal(&qemu_cpu_cond); |
| 941 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 942 | while (1) { |
Andreas Färber | a1fcaa7 | 2012-05-02 23:42:26 +0200 | [diff] [blame] | 943 | if (cpu_can_run(cpu)) { |
Andreas Färber | 1458c36 | 2013-05-26 23:46:55 +0200 | [diff] [blame] | 944 | r = kvm_cpu_exec(cpu); |
Jan Kiszka | 83f338f | 2011-02-07 12:19:17 +0100 | [diff] [blame] | 945 | if (r == EXCP_DEBUG) { |
Andreas Färber | 9132504 | 2013-05-27 02:07:49 +0200 | [diff] [blame] | 946 | cpu_handle_guest_debug(cpu); |
Jan Kiszka | 83f338f | 2011-02-07 12:19:17 +0100 | [diff] [blame] | 947 | } |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 948 | } |
Andreas Färber | fd529e8 | 2013-05-26 23:24:55 +0200 | [diff] [blame] | 949 | qemu_kvm_wait_io_event(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 950 | } |
| 951 | |
| 952 | return NULL; |
| 953 | } |
| 954 | |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 955 | static void *qemu_dummy_cpu_thread_fn(void *arg) |
| 956 | { |
| 957 | #ifdef _WIN32 |
| 958 | fprintf(stderr, "qtest is not supported under Windows\n"); |
| 959 | exit(1); |
| 960 | #else |
Andreas Färber | 10a9021 | 2013-05-27 02:24:35 +0200 | [diff] [blame] | 961 | CPUState *cpu = arg; |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 962 | sigset_t waitset; |
| 963 | int r; |
| 964 | |
| 965 | qemu_mutex_lock_iothread(); |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 966 | qemu_thread_get_self(cpu->thread); |
Andreas Färber | 9f09e18 | 2012-05-03 06:59:07 +0200 | [diff] [blame] | 967 | cpu->thread_id = qemu_get_thread_id(); |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 968 | |
| 969 | sigemptyset(&waitset); |
| 970 | sigaddset(&waitset, SIG_IPI); |
| 971 | |
| 972 | /* signal CPU creation */ |
Andreas Färber | 61a4621 | 2012-05-02 22:49:36 +0200 | [diff] [blame] | 973 | cpu->created = true; |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 974 | qemu_cond_signal(&qemu_cpu_cond); |
| 975 | |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 976 | current_cpu = cpu; |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 977 | while (1) { |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 978 | current_cpu = NULL; |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 979 | qemu_mutex_unlock_iothread(); |
| 980 | do { |
| 981 | int sig; |
| 982 | r = sigwait(&waitset, &sig); |
| 983 | } while (r == -1 && (errno == EAGAIN || errno == EINTR)); |
| 984 | if (r == -1) { |
| 985 | perror("sigwait"); |
| 986 | exit(1); |
| 987 | } |
| 988 | qemu_mutex_lock_iothread(); |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 989 | current_cpu = cpu; |
Andreas Färber | 509a0d7 | 2012-05-03 02:18:09 +0200 | [diff] [blame] | 990 | qemu_wait_io_event_common(cpu); |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 991 | } |
| 992 | |
| 993 | return NULL; |
| 994 | #endif |
| 995 | } |
| 996 | |
Jan Kiszka | bdb7ca6 | 2011-09-26 09:40:39 +0200 | [diff] [blame] | 997 | static void tcg_exec_all(void); |
| 998 | |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 999 | static void *qemu_tcg_cpu_thread_fn(void *arg) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1000 | { |
Andreas Färber | c3586ba | 2012-05-03 01:41:24 +0200 | [diff] [blame] | 1001 | CPUState *cpu = arg; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1002 | |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 1003 | qemu_tcg_init_cpu_signals(); |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1004 | qemu_thread_get_self(cpu->thread); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1005 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1006 | qemu_mutex_lock(&qemu_global_mutex); |
Andreas Färber | 38fcbd3 | 2013-07-07 19:50:23 +0200 | [diff] [blame] | 1007 | CPU_FOREACH(cpu) { |
| 1008 | cpu->thread_id = qemu_get_thread_id(); |
| 1009 | cpu->created = true; |
| 1010 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1011 | qemu_cond_signal(&qemu_cpu_cond); |
| 1012 | |
Jan Kiszka | fa7d186 | 2011-08-22 18:35:25 +0200 | [diff] [blame] | 1013 | /* wait for initial kick-off after machine start */ |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1014 | while (QTAILQ_FIRST(&cpus)->stopped) { |
Jan Kiszka | fa7d186 | 2011-08-22 18:35:25 +0200 | [diff] [blame] | 1015 | qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); |
Jan Kiszka | 8e564b4 | 2012-02-17 18:31:15 +0100 | [diff] [blame] | 1016 | |
| 1017 | /* process any pending work */ |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1018 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1019 | qemu_wait_io_event_common(cpu); |
Jan Kiszka | 8e564b4 | 2012-02-17 18:31:15 +0100 | [diff] [blame] | 1020 | } |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1021 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1022 | |
| 1023 | while (1) { |
Jan Kiszka | bdb7ca6 | 2011-09-26 09:40:39 +0200 | [diff] [blame] | 1024 | tcg_exec_all(); |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 1025 | |
| 1026 | if (use_icount) { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 1027 | int64_t deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 1028 | |
| 1029 | if (deadline == 0) { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 1030 | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 1031 | } |
Paolo Bonzini | 3b2319a | 2011-04-13 10:03:43 +0200 | [diff] [blame] | 1032 | } |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 1033 | qemu_tcg_wait_io_event(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1034 | } |
| 1035 | |
| 1036 | return NULL; |
| 1037 | } |
| 1038 | |
Andreas Färber | 2ff09a4 | 2012-05-03 00:23:30 +0200 | [diff] [blame] | 1039 | static void qemu_cpu_kick_thread(CPUState *cpu) |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 1040 | { |
| 1041 | #ifndef _WIN32 |
| 1042 | int err; |
| 1043 | |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1044 | err = pthread_kill(cpu->thread->thread, SIG_IPI); |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 1045 | if (err) { |
| 1046 | fprintf(stderr, "qemu:%s: %s", __func__, strerror(err)); |
| 1047 | exit(1); |
| 1048 | } |
| 1049 | #else /* _WIN32 */ |
Andreas Färber | 60e8257 | 2012-05-02 22:23:49 +0200 | [diff] [blame] | 1050 | if (!qemu_cpu_is_self(cpu)) { |
Olivier Hainque | ed9164a | 2013-04-09 18:06:53 +0200 | [diff] [blame] | 1051 | CONTEXT tcgContext; |
| 1052 | |
| 1053 | if (SuspendThread(cpu->hThread) == (DWORD)-1) { |
Stefan Weil | 7f1721d | 2013-04-13 22:45:50 +0200 | [diff] [blame] | 1054 | fprintf(stderr, "qemu:%s: GetLastError:%lu\n", __func__, |
Olivier Hainque | ed9164a | 2013-04-09 18:06:53 +0200 | [diff] [blame] | 1055 | GetLastError()); |
| 1056 | exit(1); |
| 1057 | } |
| 1058 | |
| 1059 | /* On multi-core systems, we are not sure that the thread is actually |
| 1060 | * suspended until we can get the context. |
| 1061 | */ |
| 1062 | tcgContext.ContextFlags = CONTEXT_CONTROL; |
| 1063 | while (GetThreadContext(cpu->hThread, &tcgContext) != 0) { |
| 1064 | continue; |
| 1065 | } |
| 1066 | |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 1067 | cpu_signal(0); |
Olivier Hainque | ed9164a | 2013-04-09 18:06:53 +0200 | [diff] [blame] | 1068 | |
| 1069 | if (ResumeThread(cpu->hThread) == (DWORD)-1) { |
Stefan Weil | 7f1721d | 2013-04-13 22:45:50 +0200 | [diff] [blame] | 1070 | fprintf(stderr, "qemu:%s: GetLastError:%lu\n", __func__, |
Olivier Hainque | ed9164a | 2013-04-09 18:06:53 +0200 | [diff] [blame] | 1071 | GetLastError()); |
| 1072 | exit(1); |
| 1073 | } |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 1074 | } |
| 1075 | #endif |
| 1076 | } |
| 1077 | |
Andreas Färber | c08d742 | 2012-05-03 04:34:15 +0200 | [diff] [blame] | 1078 | void qemu_cpu_kick(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1079 | { |
Andreas Färber | f5c121b | 2012-05-03 01:22:49 +0200 | [diff] [blame] | 1080 | qemu_cond_broadcast(cpu->halt_cond); |
Andreas Färber | 216fc9a | 2012-05-02 17:49:49 +0200 | [diff] [blame] | 1081 | if (!tcg_enabled() && !cpu->thread_kicked) { |
Andreas Färber | 2ff09a4 | 2012-05-03 00:23:30 +0200 | [diff] [blame] | 1082 | qemu_cpu_kick_thread(cpu); |
Andreas Färber | 216fc9a | 2012-05-02 17:49:49 +0200 | [diff] [blame] | 1083 | cpu->thread_kicked = true; |
Jan Kiszka | aa2c364 | 2011-02-01 22:15:42 +0100 | [diff] [blame] | 1084 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1085 | } |
| 1086 | |
Jan Kiszka | 46d62fa | 2011-02-01 22:15:59 +0100 | [diff] [blame] | 1087 | void qemu_cpu_kick_self(void) |
| 1088 | { |
Paolo Bonzini | b55c22c | 2011-03-12 17:44:07 +0100 | [diff] [blame] | 1089 | #ifndef _WIN32 |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 1090 | assert(current_cpu); |
Jan Kiszka | 46d62fa | 2011-02-01 22:15:59 +0100 | [diff] [blame] | 1091 | |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 1092 | if (!current_cpu->thread_kicked) { |
| 1093 | qemu_cpu_kick_thread(current_cpu); |
| 1094 | current_cpu->thread_kicked = true; |
Jan Kiszka | 46d62fa | 2011-02-01 22:15:59 +0100 | [diff] [blame] | 1095 | } |
Paolo Bonzini | b55c22c | 2011-03-12 17:44:07 +0100 | [diff] [blame] | 1096 | #else |
| 1097 | abort(); |
| 1098 | #endif |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1099 | } |
| 1100 | |
Andreas Färber | 60e8257 | 2012-05-02 22:23:49 +0200 | [diff] [blame] | 1101 | bool qemu_cpu_is_self(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1102 | { |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1103 | return qemu_thread_is_self(cpu->thread); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1104 | } |
| 1105 | |
Juan Quintela | aa723c2 | 2012-09-18 16:30:11 +0200 | [diff] [blame] | 1106 | static bool qemu_in_vcpu_thread(void) |
| 1107 | { |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 1108 | return current_cpu && qemu_cpu_is_self(current_cpu); |
Juan Quintela | aa723c2 | 2012-09-18 16:30:11 +0200 | [diff] [blame] | 1109 | } |
| 1110 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1111 | void qemu_mutex_lock_iothread(void) |
| 1112 | { |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1113 | if (!tcg_enabled()) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1114 | qemu_mutex_lock(&qemu_global_mutex); |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 1115 | } else { |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 1116 | iothread_requesting_mutex = true; |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 1117 | if (qemu_mutex_trylock(&qemu_global_mutex)) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1118 | qemu_cpu_kick_thread(first_cpu); |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 1119 | qemu_mutex_lock(&qemu_global_mutex); |
| 1120 | } |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 1121 | iothread_requesting_mutex = false; |
| 1122 | qemu_cond_broadcast(&qemu_io_proceeded_cond); |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 1123 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1124 | } |
| 1125 | |
| 1126 | void qemu_mutex_unlock_iothread(void) |
| 1127 | { |
| 1128 | qemu_mutex_unlock(&qemu_global_mutex); |
| 1129 | } |
| 1130 | |
| 1131 | static int all_vcpus_paused(void) |
| 1132 | { |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1133 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1134 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1135 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1136 | if (!cpu->stopped) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1137 | return 0; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1138 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1139 | } |
| 1140 | |
| 1141 | return 1; |
| 1142 | } |
| 1143 | |
| 1144 | void pause_all_vcpus(void) |
| 1145 | { |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1146 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1147 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 1148 | qemu_clock_enable(QEMU_CLOCK_VIRTUAL, false); |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1149 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1150 | cpu->stop = true; |
| 1151 | qemu_cpu_kick(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1152 | } |
| 1153 | |
Juan Quintela | aa723c2 | 2012-09-18 16:30:11 +0200 | [diff] [blame] | 1154 | if (qemu_in_vcpu_thread()) { |
Jan Kiszka | d798e97 | 2012-02-17 18:31:16 +0100 | [diff] [blame] | 1155 | cpu_stop_current(); |
| 1156 | if (!kvm_enabled()) { |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1157 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1158 | cpu->stop = false; |
| 1159 | cpu->stopped = true; |
Jan Kiszka | d798e97 | 2012-02-17 18:31:16 +0100 | [diff] [blame] | 1160 | } |
| 1161 | return; |
| 1162 | } |
| 1163 | } |
| 1164 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1165 | while (!all_vcpus_paused()) { |
Paolo Bonzini | be7d6c5 | 2011-03-12 17:44:02 +0100 | [diff] [blame] | 1166 | qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex); |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1167 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1168 | qemu_cpu_kick(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1169 | } |
| 1170 | } |
| 1171 | } |
| 1172 | |
Igor Mammedov | 2993683 | 2013-04-23 10:29:37 +0200 | [diff] [blame] | 1173 | void cpu_resume(CPUState *cpu) |
| 1174 | { |
| 1175 | cpu->stop = false; |
| 1176 | cpu->stopped = false; |
| 1177 | qemu_cpu_kick(cpu); |
| 1178 | } |
| 1179 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1180 | void resume_all_vcpus(void) |
| 1181 | { |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1182 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1183 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 1184 | qemu_clock_enable(QEMU_CLOCK_VIRTUAL, true); |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1185 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1186 | cpu_resume(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1187 | } |
| 1188 | } |
| 1189 | |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1190 | /* For temporary buffers for forming a name */ |
| 1191 | #define VCPU_THREAD_NAME_SIZE 16 |
| 1192 | |
Andreas Färber | e5ab30a | 2012-05-03 01:50:44 +0200 | [diff] [blame] | 1193 | static void qemu_tcg_init_vcpu(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1194 | { |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1195 | char thread_name[VCPU_THREAD_NAME_SIZE]; |
| 1196 | |
Edgar E. Iglesias | 09daed8 | 2013-12-17 13:06:51 +1000 | [diff] [blame] | 1197 | tcg_cpu_address_space_init(cpu, cpu->as); |
| 1198 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1199 | /* share a single thread for all cpus with TCG */ |
| 1200 | if (!tcg_cpu_thread) { |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1201 | cpu->thread = g_malloc0(sizeof(QemuThread)); |
Andreas Färber | f5c121b | 2012-05-03 01:22:49 +0200 | [diff] [blame] | 1202 | cpu->halt_cond = g_malloc0(sizeof(QemuCond)); |
| 1203 | qemu_cond_init(cpu->halt_cond); |
| 1204 | tcg_halt_cond = cpu->halt_cond; |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1205 | snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/TCG", |
| 1206 | cpu->cpu_index); |
| 1207 | qemu_thread_create(cpu->thread, thread_name, qemu_tcg_cpu_thread_fn, |
| 1208 | cpu, QEMU_THREAD_JOINABLE); |
Paolo Bonzini | 1ecf47b | 2011-12-13 13:43:52 +0100 | [diff] [blame] | 1209 | #ifdef _WIN32 |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1210 | cpu->hThread = qemu_thread_get_handle(cpu->thread); |
Paolo Bonzini | 1ecf47b | 2011-12-13 13:43:52 +0100 | [diff] [blame] | 1211 | #endif |
Andreas Färber | 61a4621 | 2012-05-02 22:49:36 +0200 | [diff] [blame] | 1212 | while (!cpu->created) { |
Paolo Bonzini | 18a8572 | 2011-03-12 17:44:03 +0100 | [diff] [blame] | 1213 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1214 | } |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1215 | tcg_cpu_thread = cpu->thread; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1216 | } else { |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1217 | cpu->thread = tcg_cpu_thread; |
Andreas Färber | f5c121b | 2012-05-03 01:22:49 +0200 | [diff] [blame] | 1218 | cpu->halt_cond = tcg_halt_cond; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1219 | } |
| 1220 | } |
| 1221 | |
Andreas Färber | 48a106b | 2013-05-27 02:20:39 +0200 | [diff] [blame] | 1222 | static void qemu_kvm_start_vcpu(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1223 | { |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1224 | char thread_name[VCPU_THREAD_NAME_SIZE]; |
| 1225 | |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1226 | cpu->thread = g_malloc0(sizeof(QemuThread)); |
Andreas Färber | f5c121b | 2012-05-03 01:22:49 +0200 | [diff] [blame] | 1227 | cpu->halt_cond = g_malloc0(sizeof(QemuCond)); |
| 1228 | qemu_cond_init(cpu->halt_cond); |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1229 | snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/KVM", |
| 1230 | cpu->cpu_index); |
| 1231 | qemu_thread_create(cpu->thread, thread_name, qemu_kvm_cpu_thread_fn, |
| 1232 | cpu, QEMU_THREAD_JOINABLE); |
Andreas Färber | 61a4621 | 2012-05-02 22:49:36 +0200 | [diff] [blame] | 1233 | while (!cpu->created) { |
Paolo Bonzini | 18a8572 | 2011-03-12 17:44:03 +0100 | [diff] [blame] | 1234 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1235 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1236 | } |
| 1237 | |
Andreas Färber | 10a9021 | 2013-05-27 02:24:35 +0200 | [diff] [blame] | 1238 | static void qemu_dummy_start_vcpu(CPUState *cpu) |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1239 | { |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1240 | char thread_name[VCPU_THREAD_NAME_SIZE]; |
| 1241 | |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1242 | cpu->thread = g_malloc0(sizeof(QemuThread)); |
Andreas Färber | f5c121b | 2012-05-03 01:22:49 +0200 | [diff] [blame] | 1243 | cpu->halt_cond = g_malloc0(sizeof(QemuCond)); |
| 1244 | qemu_cond_init(cpu->halt_cond); |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1245 | snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/DUMMY", |
| 1246 | cpu->cpu_index); |
| 1247 | qemu_thread_create(cpu->thread, thread_name, qemu_dummy_cpu_thread_fn, cpu, |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1248 | QEMU_THREAD_JOINABLE); |
Andreas Färber | 61a4621 | 2012-05-02 22:49:36 +0200 | [diff] [blame] | 1249 | while (!cpu->created) { |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1250 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
| 1251 | } |
| 1252 | } |
| 1253 | |
Andreas Färber | c643bed | 2013-05-27 03:23:24 +0200 | [diff] [blame] | 1254 | void qemu_init_vcpu(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1255 | { |
Andreas Färber | ce3960e | 2012-12-17 03:27:07 +0100 | [diff] [blame] | 1256 | cpu->nr_cores = smp_cores; |
| 1257 | cpu->nr_threads = smp_threads; |
Andreas Färber | f324e76 | 2012-05-02 23:26:21 +0200 | [diff] [blame] | 1258 | cpu->stopped = true; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1259 | if (kvm_enabled()) { |
Andreas Färber | 48a106b | 2013-05-27 02:20:39 +0200 | [diff] [blame] | 1260 | qemu_kvm_start_vcpu(cpu); |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1261 | } else if (tcg_enabled()) { |
Andreas Färber | e5ab30a | 2012-05-03 01:50:44 +0200 | [diff] [blame] | 1262 | qemu_tcg_init_vcpu(cpu); |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1263 | } else { |
Andreas Färber | 10a9021 | 2013-05-27 02:24:35 +0200 | [diff] [blame] | 1264 | qemu_dummy_start_vcpu(cpu); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1265 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1266 | } |
| 1267 | |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1268 | void cpu_stop_current(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1269 | { |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 1270 | if (current_cpu) { |
| 1271 | current_cpu->stop = false; |
| 1272 | current_cpu->stopped = true; |
| 1273 | cpu_exit(current_cpu); |
Paolo Bonzini | 67bb172 | 2011-03-12 17:43:59 +0100 | [diff] [blame] | 1274 | qemu_cond_signal(&qemu_pause_cond); |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1275 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1276 | } |
| 1277 | |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 1278 | int vm_stop(RunState state) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1279 | { |
Juan Quintela | aa723c2 | 2012-09-18 16:30:11 +0200 | [diff] [blame] | 1280 | if (qemu_in_vcpu_thread()) { |
Paolo Bonzini | 74892d2 | 2014-06-05 14:53:58 +0200 | [diff] [blame] | 1281 | qemu_system_vmstop_request_prepare(); |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 1282 | qemu_system_vmstop_request(state); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1283 | /* |
| 1284 | * FIXME: should not return to device code in case |
| 1285 | * vm_stop() has been requested. |
| 1286 | */ |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1287 | cpu_stop_current(); |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 1288 | return 0; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1289 | } |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 1290 | |
| 1291 | return do_vm_stop(state); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1292 | } |
| 1293 | |
Luiz Capitulino | 8a9236f | 2011-10-14 11:18:09 -0300 | [diff] [blame] | 1294 | /* does a state transition even if the VM is already stopped, |
| 1295 | current state is forgotten forever */ |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 1296 | int vm_stop_force_state(RunState state) |
Luiz Capitulino | 8a9236f | 2011-10-14 11:18:09 -0300 | [diff] [blame] | 1297 | { |
| 1298 | if (runstate_is_running()) { |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 1299 | return vm_stop(state); |
Luiz Capitulino | 8a9236f | 2011-10-14 11:18:09 -0300 | [diff] [blame] | 1300 | } else { |
| 1301 | runstate_set(state); |
Kevin Wolf | 594a45c | 2013-07-18 14:52:19 +0200 | [diff] [blame] | 1302 | /* Make sure to return an error if the flush in a previous vm_stop() |
| 1303 | * failed. */ |
| 1304 | return bdrv_flush_all(); |
Luiz Capitulino | 8a9236f | 2011-10-14 11:18:09 -0300 | [diff] [blame] | 1305 | } |
| 1306 | } |
| 1307 | |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 1308 | static int tcg_cpu_exec(CPUArchState *env) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1309 | { |
Andreas Färber | efee734 | 2013-08-26 05:39:29 +0200 | [diff] [blame] | 1310 | CPUState *cpu = ENV_GET_CPU(env); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1311 | int ret; |
| 1312 | #ifdef CONFIG_PROFILER |
| 1313 | int64_t ti; |
| 1314 | #endif |
| 1315 | |
| 1316 | #ifdef CONFIG_PROFILER |
| 1317 | ti = profile_getclock(); |
| 1318 | #endif |
| 1319 | if (use_icount) { |
| 1320 | int64_t count; |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 1321 | int64_t deadline; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1322 | int decr; |
KONRAD Frederic | c96778b | 2014-08-01 01:37:09 +0200 | [diff] [blame] | 1323 | timers_state.qemu_icount -= (cpu->icount_decr.u16.low |
| 1324 | + cpu->icount_extra); |
Andreas Färber | 28ecfd7 | 2013-08-26 05:51:49 +0200 | [diff] [blame] | 1325 | cpu->icount_decr.u16.low = 0; |
Andreas Färber | efee734 | 2013-08-26 05:39:29 +0200 | [diff] [blame] | 1326 | cpu->icount_extra = 0; |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 1327 | deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 1328 | |
| 1329 | /* Maintain prior (possibly buggy) behaviour where if no deadline |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 1330 | * was set (as there is no QEMU_CLOCK_VIRTUAL timer) or it is more than |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 1331 | * INT32_MAX nanoseconds ahead, we still use INT32_MAX |
| 1332 | * nanoseconds. |
| 1333 | */ |
| 1334 | if ((deadline < 0) || (deadline > INT32_MAX)) { |
| 1335 | deadline = INT32_MAX; |
| 1336 | } |
| 1337 | |
| 1338 | count = qemu_icount_round(deadline); |
KONRAD Frederic | c96778b | 2014-08-01 01:37:09 +0200 | [diff] [blame] | 1339 | timers_state.qemu_icount += count; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1340 | decr = (count > 0xffff) ? 0xffff : count; |
| 1341 | count -= decr; |
Andreas Färber | 28ecfd7 | 2013-08-26 05:51:49 +0200 | [diff] [blame] | 1342 | cpu->icount_decr.u16.low = decr; |
Andreas Färber | efee734 | 2013-08-26 05:39:29 +0200 | [diff] [blame] | 1343 | cpu->icount_extra = count; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1344 | } |
| 1345 | ret = cpu_exec(env); |
| 1346 | #ifdef CONFIG_PROFILER |
| 1347 | qemu_time += profile_getclock() - ti; |
| 1348 | #endif |
| 1349 | if (use_icount) { |
| 1350 | /* Fold pending instructions back into the |
| 1351 | instruction counter, and clear the interrupt flag. */ |
KONRAD Frederic | c96778b | 2014-08-01 01:37:09 +0200 | [diff] [blame] | 1352 | timers_state.qemu_icount -= (cpu->icount_decr.u16.low |
| 1353 | + cpu->icount_extra); |
Andreas Färber | 28ecfd7 | 2013-08-26 05:51:49 +0200 | [diff] [blame] | 1354 | cpu->icount_decr.u32 = 0; |
Andreas Färber | efee734 | 2013-08-26 05:39:29 +0200 | [diff] [blame] | 1355 | cpu->icount_extra = 0; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1356 | } |
| 1357 | return ret; |
| 1358 | } |
| 1359 | |
Jan Kiszka | bdb7ca6 | 2011-09-26 09:40:39 +0200 | [diff] [blame] | 1360 | static void tcg_exec_all(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1361 | { |
Jan Kiszka | 9a36085 | 2011-02-01 22:15:55 +0100 | [diff] [blame] | 1362 | int r; |
| 1363 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 1364 | /* Account partial waits to QEMU_CLOCK_VIRTUAL. */ |
| 1365 | qemu_clock_warp(QEMU_CLOCK_VIRTUAL); |
Paolo Bonzini | ab33fcd | 2011-04-13 10:03:44 +0200 | [diff] [blame] | 1366 | |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1367 | if (next_cpu == NULL) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1368 | next_cpu = first_cpu; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1369 | } |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1370 | for (; next_cpu != NULL && !exit_request; next_cpu = CPU_NEXT(next_cpu)) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1371 | CPUState *cpu = next_cpu; |
| 1372 | CPUArchState *env = cpu->env_ptr; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1373 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 1374 | qemu_clock_enable(QEMU_CLOCK_VIRTUAL, |
Andreas Färber | ed2803d | 2013-06-21 20:20:45 +0200 | [diff] [blame] | 1375 | (cpu->singlestep_enabled & SSTEP_NOTIMER) == 0); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1376 | |
Andreas Färber | a1fcaa7 | 2012-05-02 23:42:26 +0200 | [diff] [blame] | 1377 | if (cpu_can_run(cpu)) { |
Jan Kiszka | bdb7ca6 | 2011-09-26 09:40:39 +0200 | [diff] [blame] | 1378 | r = tcg_cpu_exec(env); |
Jan Kiszka | 9a36085 | 2011-02-01 22:15:55 +0100 | [diff] [blame] | 1379 | if (r == EXCP_DEBUG) { |
Andreas Färber | 9132504 | 2013-05-27 02:07:49 +0200 | [diff] [blame] | 1380 | cpu_handle_guest_debug(cpu); |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 1381 | break; |
| 1382 | } |
Andreas Färber | f324e76 | 2012-05-02 23:26:21 +0200 | [diff] [blame] | 1383 | } else if (cpu->stop || cpu->stopped) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1384 | break; |
| 1385 | } |
| 1386 | } |
Jan Kiszka | c629a4b | 2010-06-25 16:56:52 +0200 | [diff] [blame] | 1387 | exit_request = 0; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1388 | } |
| 1389 | |
Stefan Weil | 9a78eea | 2010-10-22 23:03:33 +0200 | [diff] [blame] | 1390 | void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg) |
Blue Swirl | 262353c | 2010-05-04 19:55:35 +0000 | [diff] [blame] | 1391 | { |
| 1392 | /* XXX: implement xxx_cpu_list for targets that still miss it */ |
Peter Maydell | e916cbf | 2012-09-05 17:41:08 -0300 | [diff] [blame] | 1393 | #if defined(cpu_list) |
| 1394 | cpu_list(f, cpu_fprintf); |
Blue Swirl | 262353c | 2010-05-04 19:55:35 +0000 | [diff] [blame] | 1395 | #endif |
| 1396 | } |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1397 | |
| 1398 | CpuInfoList *qmp_query_cpus(Error **errp) |
| 1399 | { |
| 1400 | CpuInfoList *head = NULL, *cur_item = NULL; |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1401 | CPUState *cpu; |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1402 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1403 | CPU_FOREACH(cpu) { |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1404 | CpuInfoList *info; |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1405 | #if defined(TARGET_I386) |
| 1406 | X86CPU *x86_cpu = X86_CPU(cpu); |
| 1407 | CPUX86State *env = &x86_cpu->env; |
| 1408 | #elif defined(TARGET_PPC) |
| 1409 | PowerPCCPU *ppc_cpu = POWERPC_CPU(cpu); |
| 1410 | CPUPPCState *env = &ppc_cpu->env; |
| 1411 | #elif defined(TARGET_SPARC) |
| 1412 | SPARCCPU *sparc_cpu = SPARC_CPU(cpu); |
| 1413 | CPUSPARCState *env = &sparc_cpu->env; |
| 1414 | #elif defined(TARGET_MIPS) |
| 1415 | MIPSCPU *mips_cpu = MIPS_CPU(cpu); |
| 1416 | CPUMIPSState *env = &mips_cpu->env; |
Bastian Koppelmann | 48e06fe | 2014-09-01 12:59:46 +0100 | [diff] [blame] | 1417 | #elif defined(TARGET_TRICORE) |
| 1418 | TriCoreCPU *tricore_cpu = TRICORE_CPU(cpu); |
| 1419 | CPUTriCoreState *env = &tricore_cpu->env; |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1420 | #endif |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1421 | |
Andreas Färber | cb446ec | 2013-05-01 14:24:52 +0200 | [diff] [blame] | 1422 | cpu_synchronize_state(cpu); |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1423 | |
| 1424 | info = g_malloc0(sizeof(*info)); |
| 1425 | info->value = g_malloc0(sizeof(*info->value)); |
Andreas Färber | 55e5c28 | 2012-12-17 06:18:02 +0100 | [diff] [blame] | 1426 | info->value->CPU = cpu->cpu_index; |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1427 | info->value->current = (cpu == first_cpu); |
Andreas Färber | 259186a | 2013-01-17 18:51:17 +0100 | [diff] [blame] | 1428 | info->value->halted = cpu->halted; |
Andreas Färber | 9f09e18 | 2012-05-03 06:59:07 +0200 | [diff] [blame] | 1429 | info->value->thread_id = cpu->thread_id; |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1430 | #if defined(TARGET_I386) |
| 1431 | info->value->has_pc = true; |
| 1432 | info->value->pc = env->eip + env->segs[R_CS].base; |
| 1433 | #elif defined(TARGET_PPC) |
| 1434 | info->value->has_nip = true; |
| 1435 | info->value->nip = env->nip; |
| 1436 | #elif defined(TARGET_SPARC) |
| 1437 | info->value->has_pc = true; |
| 1438 | info->value->pc = env->pc; |
| 1439 | info->value->has_npc = true; |
| 1440 | info->value->npc = env->npc; |
| 1441 | #elif defined(TARGET_MIPS) |
| 1442 | info->value->has_PC = true; |
| 1443 | info->value->PC = env->active_tc.PC; |
Bastian Koppelmann | 48e06fe | 2014-09-01 12:59:46 +0100 | [diff] [blame] | 1444 | #elif defined(TARGET_TRICORE) |
| 1445 | info->value->has_PC = true; |
| 1446 | info->value->PC = env->PC; |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1447 | #endif |
| 1448 | |
| 1449 | /* XXX: waiting for the qapi to support GSList */ |
| 1450 | if (!cur_item) { |
| 1451 | head = cur_item = info; |
| 1452 | } else { |
| 1453 | cur_item->next = info; |
| 1454 | cur_item = info; |
| 1455 | } |
| 1456 | } |
| 1457 | |
| 1458 | return head; |
| 1459 | } |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1460 | |
| 1461 | void qmp_memsave(int64_t addr, int64_t size, const char *filename, |
| 1462 | bool has_cpu, int64_t cpu_index, Error **errp) |
| 1463 | { |
| 1464 | FILE *f; |
| 1465 | uint32_t l; |
Andreas Färber | 55e5c28 | 2012-12-17 06:18:02 +0100 | [diff] [blame] | 1466 | CPUState *cpu; |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1467 | uint8_t buf[1024]; |
| 1468 | |
| 1469 | if (!has_cpu) { |
| 1470 | cpu_index = 0; |
| 1471 | } |
| 1472 | |
Andreas Färber | 151d132 | 2013-02-15 15:41:49 +0100 | [diff] [blame] | 1473 | cpu = qemu_get_cpu(cpu_index); |
| 1474 | if (cpu == NULL) { |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1475 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index", |
| 1476 | "a CPU number"); |
| 1477 | return; |
| 1478 | } |
| 1479 | |
| 1480 | f = fopen(filename, "wb"); |
| 1481 | if (!f) { |
Luiz Capitulino | 618da85 | 2013-06-07 14:35:06 -0400 | [diff] [blame] | 1482 | error_setg_file_open(errp, errno, filename); |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1483 | return; |
| 1484 | } |
| 1485 | |
| 1486 | while (size != 0) { |
| 1487 | l = sizeof(buf); |
| 1488 | if (l > size) |
| 1489 | l = size; |
Aneesh Kumar K.V | 2f4d0f5 | 2013-10-01 21:49:30 +0530 | [diff] [blame] | 1490 | if (cpu_memory_rw_debug(cpu, addr, buf, l, 0) != 0) { |
| 1491 | error_setg(errp, "Invalid addr 0x%016" PRIx64 "specified", addr); |
| 1492 | goto exit; |
| 1493 | } |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1494 | if (fwrite(buf, 1, l, f) != l) { |
| 1495 | error_set(errp, QERR_IO_ERROR); |
| 1496 | goto exit; |
| 1497 | } |
| 1498 | addr += l; |
| 1499 | size -= l; |
| 1500 | } |
| 1501 | |
| 1502 | exit: |
| 1503 | fclose(f); |
| 1504 | } |
Luiz Capitulino | 6d3962b | 2011-11-22 17:26:46 -0200 | [diff] [blame] | 1505 | |
| 1506 | void qmp_pmemsave(int64_t addr, int64_t size, const char *filename, |
| 1507 | Error **errp) |
| 1508 | { |
| 1509 | FILE *f; |
| 1510 | uint32_t l; |
| 1511 | uint8_t buf[1024]; |
| 1512 | |
| 1513 | f = fopen(filename, "wb"); |
| 1514 | if (!f) { |
Luiz Capitulino | 618da85 | 2013-06-07 14:35:06 -0400 | [diff] [blame] | 1515 | error_setg_file_open(errp, errno, filename); |
Luiz Capitulino | 6d3962b | 2011-11-22 17:26:46 -0200 | [diff] [blame] | 1516 | return; |
| 1517 | } |
| 1518 | |
| 1519 | while (size != 0) { |
| 1520 | l = sizeof(buf); |
| 1521 | if (l > size) |
| 1522 | l = size; |
Stefan Weil | eb6282f | 2014-04-07 20:28:23 +0200 | [diff] [blame] | 1523 | cpu_physical_memory_read(addr, buf, l); |
Luiz Capitulino | 6d3962b | 2011-11-22 17:26:46 -0200 | [diff] [blame] | 1524 | if (fwrite(buf, 1, l, f) != l) { |
| 1525 | error_set(errp, QERR_IO_ERROR); |
| 1526 | goto exit; |
| 1527 | } |
| 1528 | addr += l; |
| 1529 | size -= l; |
| 1530 | } |
| 1531 | |
| 1532 | exit: |
| 1533 | fclose(f); |
| 1534 | } |
Luiz Capitulino | ab49ab5 | 2011-11-23 12:55:53 -0200 | [diff] [blame] | 1535 | |
| 1536 | void qmp_inject_nmi(Error **errp) |
| 1537 | { |
| 1538 | #if defined(TARGET_I386) |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1539 | CPUState *cs; |
Luiz Capitulino | ab49ab5 | 2011-11-23 12:55:53 -0200 | [diff] [blame] | 1540 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1541 | CPU_FOREACH(cs) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1542 | X86CPU *cpu = X86_CPU(cs); |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1543 | |
Chen Fan | 02e5148 | 2013-12-23 17:04:02 +0800 | [diff] [blame] | 1544 | if (!cpu->apic_state) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1545 | cpu_interrupt(cs, CPU_INTERRUPT_NMI); |
Jan Kiszka | 02c0919 | 2011-10-18 00:00:06 +0800 | [diff] [blame] | 1546 | } else { |
Chen Fan | 02e5148 | 2013-12-23 17:04:02 +0800 | [diff] [blame] | 1547 | apic_deliver_nmi(cpu->apic_state); |
Jan Kiszka | 02c0919 | 2011-10-18 00:00:06 +0800 | [diff] [blame] | 1548 | } |
Luiz Capitulino | ab49ab5 | 2011-11-23 12:55:53 -0200 | [diff] [blame] | 1549 | } |
| 1550 | #else |
Alexey Kardashevskiy | 9cb805f | 2014-08-20 22:16:33 +1000 | [diff] [blame] | 1551 | nmi_monitor_handle(monitor_get_cpu_index(), errp); |
Luiz Capitulino | ab49ab5 | 2011-11-23 12:55:53 -0200 | [diff] [blame] | 1552 | #endif |
| 1553 | } |
Sebastian Tanase | 27498be | 2014-07-25 11:56:33 +0200 | [diff] [blame] | 1554 | |
| 1555 | void dump_drift_info(FILE *f, fprintf_function cpu_fprintf) |
| 1556 | { |
| 1557 | if (!use_icount) { |
| 1558 | return; |
| 1559 | } |
| 1560 | |
| 1561 | cpu_fprintf(f, "Host - Guest clock %"PRIi64" ms\n", |
| 1562 | (cpu_get_clock() - cpu_get_icount())/SCALE_MS); |
| 1563 | if (icount_align_option) { |
| 1564 | cpu_fprintf(f, "Max guest delay %"PRIi64" ms\n", -max_delay/SCALE_MS); |
| 1565 | cpu_fprintf(f, "Max guest advance %"PRIi64" ms\n", max_advance/SCALE_MS); |
| 1566 | } else { |
| 1567 | cpu_fprintf(f, "Max guest delay NA\n"); |
| 1568 | cpu_fprintf(f, "Max guest advance NA\n"); |
| 1569 | } |
| 1570 | } |