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. */ |
Peter Maydell | 7b31bbc | 2016-01-26 18:16:56 +0000 | [diff] [blame] | 26 | #include "qemu/osdep.h" |
Paolo Bonzini | 33c1187 | 2016-03-15 16:58:45 +0100 | [diff] [blame] | 27 | #include "qemu-common.h" |
| 28 | #include "cpu.h" |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 29 | #include "monitor/monitor.h" |
Wenchao Xia | a4e15de | 2014-06-18 08:43:36 +0200 | [diff] [blame] | 30 | #include "qapi/qmp/qerror.h" |
Markus Armbruster | d49b683 | 2015-03-17 18:29:20 +0100 | [diff] [blame] | 31 | #include "qemu/error-report.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 32 | #include "sysemu/sysemu.h" |
Max Reitz | da31d59 | 2016-03-16 19:54:32 +0100 | [diff] [blame] | 33 | #include "sysemu/block-backend.h" |
Paolo Bonzini | 022c62c | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 34 | #include "exec/gdbstub.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 35 | #include "sysemu/dma.h" |
Vincent Palatin | b394662 | 2017-01-10 11:59:55 +0100 | [diff] [blame^] | 36 | #include "sysemu/hw_accel.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 37 | #include "sysemu/kvm.h" |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 38 | #include "qmp-commands.h" |
Paolo Bonzini | 63c9155 | 2016-03-15 13:18:37 +0100 | [diff] [blame] | 39 | #include "exec/exec-all.h" |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 40 | |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 41 | #include "qemu/thread.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 42 | #include "sysemu/cpus.h" |
| 43 | #include "sysemu/qtest.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 44 | #include "qemu/main-loop.h" |
| 45 | #include "qemu/bitmap.h" |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 46 | #include "qemu/seqlock.h" |
Wenchao Xia | a4e15de | 2014-06-18 08:43:36 +0200 | [diff] [blame] | 47 | #include "qapi-event.h" |
Alexey Kardashevskiy | 9cb805f | 2014-08-20 22:16:33 +1000 | [diff] [blame] | 48 | #include "hw/nmi.h" |
Pavel Dovgalyuk | 8b42704 | 2015-09-17 19:24:05 +0300 | [diff] [blame] | 49 | #include "sysemu/replay.h" |
Jan Kiszka | 0ff0fc1 | 2011-06-23 10:15:55 +0200 | [diff] [blame] | 50 | |
| 51 | #ifndef _WIN32 |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 52 | #include "qemu/compatfd.h" |
Jan Kiszka | 0ff0fc1 | 2011-06-23 10:15:55 +0200 | [diff] [blame] | 53 | #endif |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 54 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 55 | #ifdef CONFIG_LINUX |
| 56 | |
| 57 | #include <sys/prctl.h> |
| 58 | |
Marcelo Tosatti | c0532a7 | 2010-10-11 15:31:21 -0300 | [diff] [blame] | 59 | #ifndef PR_MCE_KILL |
| 60 | #define PR_MCE_KILL 33 |
| 61 | #endif |
| 62 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 63 | #ifndef PR_MCE_KILL_SET |
| 64 | #define PR_MCE_KILL_SET 1 |
| 65 | #endif |
| 66 | |
| 67 | #ifndef PR_MCE_KILL_EARLY |
| 68 | #define PR_MCE_KILL_EARLY 1 |
| 69 | #endif |
| 70 | |
| 71 | #endif /* CONFIG_LINUX */ |
| 72 | |
Sebastian Tanase | 27498be | 2014-07-25 11:56:33 +0200 | [diff] [blame] | 73 | int64_t max_delay; |
| 74 | int64_t max_advance; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 75 | |
Jason J. Herne | 2adcc85 | 2015-09-08 13:12:33 -0400 | [diff] [blame] | 76 | /* vcpu throttling controls */ |
| 77 | static QEMUTimer *throttle_timer; |
| 78 | static unsigned int throttle_percentage; |
| 79 | |
| 80 | #define CPU_THROTTLE_PCT_MIN 1 |
| 81 | #define CPU_THROTTLE_PCT_MAX 99 |
| 82 | #define CPU_THROTTLE_TIMESLICE_NS 10000000 |
| 83 | |
Tiejun Chen | 321bc0b | 2013-08-02 09:43:09 +0800 | [diff] [blame] | 84 | bool cpu_is_stopped(CPUState *cpu) |
| 85 | { |
| 86 | return cpu->stopped || !runstate_is_running(); |
| 87 | } |
| 88 | |
Andreas Färber | a98ae1d | 2013-05-26 23:21:08 +0200 | [diff] [blame] | 89 | static bool cpu_thread_is_idle(CPUState *cpu) |
Peter Maydell | ac873f1 | 2012-07-19 16:52:27 +0100 | [diff] [blame] | 90 | { |
Andreas Färber | c64ca81 | 2012-05-03 02:11:45 +0200 | [diff] [blame] | 91 | if (cpu->stop || cpu->queued_work_first) { |
Peter Maydell | ac873f1 | 2012-07-19 16:52:27 +0100 | [diff] [blame] | 92 | return false; |
| 93 | } |
Tiejun Chen | 321bc0b | 2013-08-02 09:43:09 +0800 | [diff] [blame] | 94 | if (cpu_is_stopped(cpu)) { |
Peter Maydell | ac873f1 | 2012-07-19 16:52:27 +0100 | [diff] [blame] | 95 | return true; |
| 96 | } |
Andreas Färber | 8c2e1b0 | 2013-08-25 18:53:55 +0200 | [diff] [blame] | 97 | if (!cpu->halted || cpu_has_work(cpu) || |
Alexander Graf | 215e79c | 2013-04-24 22:24:12 +0200 | [diff] [blame] | 98 | kvm_halt_in_kernel()) { |
Peter Maydell | ac873f1 | 2012-07-19 16:52:27 +0100 | [diff] [blame] | 99 | return false; |
| 100 | } |
| 101 | return true; |
| 102 | } |
| 103 | |
| 104 | static bool all_cpu_threads_idle(void) |
| 105 | { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 106 | CPUState *cpu; |
Peter Maydell | ac873f1 | 2012-07-19 16:52:27 +0100 | [diff] [blame] | 107 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 108 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 109 | if (!cpu_thread_is_idle(cpu)) { |
Peter Maydell | ac873f1 | 2012-07-19 16:52:27 +0100 | [diff] [blame] | 110 | return false; |
| 111 | } |
| 112 | } |
| 113 | return true; |
| 114 | } |
| 115 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 116 | /***********************************************************/ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 117 | /* guest cycle counter */ |
| 118 | |
Paolo Bonzini | a3270e1 | 2013-10-07 17:18:15 +0200 | [diff] [blame] | 119 | /* Protected by TimersState seqlock */ |
| 120 | |
Victor CLEMENT | 5045e9d9 | 2015-05-29 17:14:04 +0200 | [diff] [blame] | 121 | static bool icount_sleep = true; |
Sebastian Tanase | 7146839 | 2014-07-23 11:47:50 +0200 | [diff] [blame] | 122 | static int64_t vm_clock_warp_start = -1; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 123 | /* Conversion factor from emulated instructions to virtual clock ticks. */ |
| 124 | static int icount_time_shift; |
| 125 | /* Arbitrarily pick 1MIPS as the minimum allowable speed. */ |
| 126 | #define MAX_ICOUNT_SHIFT 10 |
Paolo Bonzini | a3270e1 | 2013-10-07 17:18:15 +0200 | [diff] [blame] | 127 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 128 | static QEMUTimer *icount_rt_timer; |
| 129 | static QEMUTimer *icount_vm_timer; |
| 130 | static QEMUTimer *icount_warp_timer; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 131 | |
| 132 | typedef struct TimersState { |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 133 | /* Protected by BQL. */ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 134 | int64_t cpu_ticks_prev; |
| 135 | int64_t cpu_ticks_offset; |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 136 | |
| 137 | /* cpu_clock_offset can be read out of BQL, so protect it with |
| 138 | * this lock. |
| 139 | */ |
| 140 | QemuSeqLock vm_clock_seqlock; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 141 | int64_t cpu_clock_offset; |
| 142 | int32_t cpu_ticks_enabled; |
| 143 | int64_t dummy; |
KONRAD Frederic | c96778b | 2014-08-01 01:37:09 +0200 | [diff] [blame] | 144 | |
| 145 | /* Compensate for varying guest execution speed. */ |
| 146 | int64_t qemu_icount_bias; |
| 147 | /* Only written by TCG thread */ |
| 148 | int64_t qemu_icount; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 149 | } TimersState; |
| 150 | |
Liu Ping Fan | d9cd400 | 2013-07-21 08:43:00 +0000 | [diff] [blame] | 151 | static TimersState timers_state; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 152 | |
Pavel Dovgalyuk | 2a62914 | 2014-12-08 10:53:45 +0300 | [diff] [blame] | 153 | int64_t cpu_get_icount_raw(void) |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 154 | { |
| 155 | int64_t icount; |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 156 | CPUState *cpu = current_cpu; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 157 | |
KONRAD Frederic | c96778b | 2014-08-01 01:37:09 +0200 | [diff] [blame] | 158 | icount = timers_state.qemu_icount; |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 159 | if (cpu) { |
Paolo Bonzini | 414b15c | 2015-06-24 14:16:26 +0200 | [diff] [blame] | 160 | if (!cpu->can_do_io) { |
Pavel Dovgalyuk | 2a62914 | 2014-12-08 10:53:45 +0300 | [diff] [blame] | 161 | fprintf(stderr, "Bad icount read\n"); |
| 162 | exit(1); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 163 | } |
Andreas Färber | 28ecfd7 | 2013-08-26 05:51:49 +0200 | [diff] [blame] | 164 | icount -= (cpu->icount_decr.u16.low + cpu->icount_extra); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 165 | } |
Pavel Dovgalyuk | 2a62914 | 2014-12-08 10:53:45 +0300 | [diff] [blame] | 166 | return icount; |
| 167 | } |
| 168 | |
| 169 | /* Return the virtual CPU time, based on the instruction counter. */ |
| 170 | static int64_t cpu_get_icount_locked(void) |
| 171 | { |
| 172 | int64_t icount = cpu_get_icount_raw(); |
KONRAD Frederic | 3f03131 | 2014-08-01 01:37:15 +0200 | [diff] [blame] | 173 | return timers_state.qemu_icount_bias + cpu_icount_to_ns(icount); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 174 | } |
| 175 | |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 176 | int64_t cpu_get_icount(void) |
| 177 | { |
| 178 | int64_t icount; |
| 179 | unsigned start; |
| 180 | |
| 181 | do { |
| 182 | start = seqlock_read_begin(&timers_state.vm_clock_seqlock); |
| 183 | icount = cpu_get_icount_locked(); |
| 184 | } while (seqlock_read_retry(&timers_state.vm_clock_seqlock, start)); |
| 185 | |
| 186 | return icount; |
| 187 | } |
| 188 | |
KONRAD Frederic | 3f03131 | 2014-08-01 01:37:15 +0200 | [diff] [blame] | 189 | int64_t cpu_icount_to_ns(int64_t icount) |
| 190 | { |
| 191 | return icount << icount_time_shift; |
| 192 | } |
| 193 | |
Cao jin | d90f3cc | 2016-07-29 19:05:38 +0800 | [diff] [blame] | 194 | /* return the time elapsed in VM between vm_start and vm_stop. Unless |
| 195 | * icount is active, cpu_get_ticks() uses units of the host CPU cycle |
| 196 | * counter. |
| 197 | * |
| 198 | * Caller must hold the BQL |
| 199 | */ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 200 | int64_t cpu_get_ticks(void) |
| 201 | { |
Paolo Bonzini | 5f3e310 | 2013-10-28 17:32:18 +0100 | [diff] [blame] | 202 | int64_t ticks; |
| 203 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 204 | if (use_icount) { |
| 205 | return cpu_get_icount(); |
| 206 | } |
Paolo Bonzini | 5f3e310 | 2013-10-28 17:32:18 +0100 | [diff] [blame] | 207 | |
| 208 | ticks = timers_state.cpu_ticks_offset; |
| 209 | if (timers_state.cpu_ticks_enabled) { |
Christopher Covington | 4a7428c | 2015-09-25 10:42:21 -0400 | [diff] [blame] | 210 | ticks += cpu_get_host_ticks(); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 211 | } |
Paolo Bonzini | 5f3e310 | 2013-10-28 17:32:18 +0100 | [diff] [blame] | 212 | |
| 213 | if (timers_state.cpu_ticks_prev > ticks) { |
| 214 | /* Note: non increasing ticks may happen if the host uses |
| 215 | software suspend */ |
| 216 | timers_state.cpu_ticks_offset += timers_state.cpu_ticks_prev - ticks; |
| 217 | ticks = timers_state.cpu_ticks_prev; |
| 218 | } |
| 219 | |
| 220 | timers_state.cpu_ticks_prev = ticks; |
| 221 | return ticks; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 222 | } |
| 223 | |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 224 | static int64_t cpu_get_clock_locked(void) |
| 225 | { |
Cao jin | 1d45cea | 2016-07-29 19:05:37 +0800 | [diff] [blame] | 226 | int64_t time; |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 227 | |
Cao jin | 1d45cea | 2016-07-29 19:05:37 +0800 | [diff] [blame] | 228 | time = timers_state.cpu_clock_offset; |
Paolo Bonzini | 5f3e310 | 2013-10-28 17:32:18 +0100 | [diff] [blame] | 229 | if (timers_state.cpu_ticks_enabled) { |
Cao jin | 1d45cea | 2016-07-29 19:05:37 +0800 | [diff] [blame] | 230 | time += get_clock(); |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 231 | } |
| 232 | |
Cao jin | 1d45cea | 2016-07-29 19:05:37 +0800 | [diff] [blame] | 233 | return time; |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 234 | } |
| 235 | |
Cao jin | d90f3cc | 2016-07-29 19:05:38 +0800 | [diff] [blame] | 236 | /* Return the monotonic time elapsed in VM, i.e., |
Peter Maydell | 8212ff8 | 2016-09-15 10:24:22 +0100 | [diff] [blame] | 237 | * the time between vm_start and vm_stop |
| 238 | */ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 239 | int64_t cpu_get_clock(void) |
| 240 | { |
| 241 | int64_t ti; |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 242 | unsigned start; |
| 243 | |
| 244 | do { |
| 245 | start = seqlock_read_begin(&timers_state.vm_clock_seqlock); |
| 246 | ti = cpu_get_clock_locked(); |
| 247 | } while (seqlock_read_retry(&timers_state.vm_clock_seqlock, start)); |
| 248 | |
| 249 | return ti; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 250 | } |
| 251 | |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 252 | /* enable cpu_get_ticks() |
Cao jin | 3224e87 | 2016-07-08 18:31:37 +0800 | [diff] [blame] | 253 | * Caller must hold BQL which serves as mutex for vm_clock_seqlock. |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 254 | */ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 255 | void cpu_enable_ticks(void) |
| 256 | { |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 257 | /* Here, the really thing protected by seqlock is cpu_clock_offset. */ |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 258 | seqlock_write_begin(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 259 | if (!timers_state.cpu_ticks_enabled) { |
Christopher Covington | 4a7428c | 2015-09-25 10:42:21 -0400 | [diff] [blame] | 260 | timers_state.cpu_ticks_offset -= cpu_get_host_ticks(); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 261 | timers_state.cpu_clock_offset -= get_clock(); |
| 262 | timers_state.cpu_ticks_enabled = 1; |
| 263 | } |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 264 | seqlock_write_end(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | /* 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] | 268 | * cpu_get_ticks() after that. |
Cao jin | 3224e87 | 2016-07-08 18:31:37 +0800 | [diff] [blame] | 269 | * Caller must hold BQL which serves as mutex for vm_clock_seqlock. |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 270 | */ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 271 | void cpu_disable_ticks(void) |
| 272 | { |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 273 | /* Here, the really thing protected by seqlock is cpu_clock_offset. */ |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 274 | seqlock_write_begin(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 275 | if (timers_state.cpu_ticks_enabled) { |
Christopher Covington | 4a7428c | 2015-09-25 10:42:21 -0400 | [diff] [blame] | 276 | timers_state.cpu_ticks_offset += cpu_get_host_ticks(); |
Liu Ping Fan | cb36564 | 2013-09-25 14:20:58 +0800 | [diff] [blame] | 277 | timers_state.cpu_clock_offset = cpu_get_clock_locked(); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 278 | timers_state.cpu_ticks_enabled = 0; |
| 279 | } |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 280 | seqlock_write_end(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 281 | } |
| 282 | |
| 283 | /* Correlation between real and virtual time is always going to be |
| 284 | fairly approximate, so ignore small variation. |
| 285 | When the guest is idle real and virtual time will be aligned in |
| 286 | the IO wait loop. */ |
Rutuja Shah | 73bcb24 | 2016-03-21 21:32:30 +0530 | [diff] [blame] | 287 | #define ICOUNT_WOBBLE (NANOSECONDS_PER_SECOND / 10) |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 288 | |
| 289 | static void icount_adjust(void) |
| 290 | { |
| 291 | int64_t cur_time; |
| 292 | int64_t cur_icount; |
| 293 | int64_t delta; |
Paolo Bonzini | a3270e1 | 2013-10-07 17:18:15 +0200 | [diff] [blame] | 294 | |
| 295 | /* Protected by TimersState mutex. */ |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 296 | static int64_t last_delta; |
Paolo Bonzini | 468cc7c | 2013-10-07 17:21:51 +0200 | [diff] [blame] | 297 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 298 | /* If the VM is not running, then do nothing. */ |
| 299 | if (!runstate_is_running()) { |
| 300 | return; |
| 301 | } |
Paolo Bonzini | 468cc7c | 2013-10-07 17:21:51 +0200 | [diff] [blame] | 302 | |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 303 | seqlock_write_begin(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 304 | cur_time = cpu_get_clock_locked(); |
| 305 | cur_icount = cpu_get_icount_locked(); |
Paolo Bonzini | 468cc7c | 2013-10-07 17:21:51 +0200 | [diff] [blame] | 306 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 307 | delta = cur_icount - cur_time; |
| 308 | /* FIXME: This is a very crude algorithm, somewhat prone to oscillation. */ |
| 309 | if (delta > 0 |
| 310 | && last_delta + ICOUNT_WOBBLE < delta * 2 |
| 311 | && icount_time_shift > 0) { |
| 312 | /* The guest is getting too far ahead. Slow time down. */ |
| 313 | icount_time_shift--; |
| 314 | } |
| 315 | if (delta < 0 |
| 316 | && last_delta - ICOUNT_WOBBLE > delta * 2 |
| 317 | && icount_time_shift < MAX_ICOUNT_SHIFT) { |
| 318 | /* The guest is getting too far behind. Speed time up. */ |
| 319 | icount_time_shift++; |
| 320 | } |
| 321 | last_delta = delta; |
KONRAD Frederic | c96778b | 2014-08-01 01:37:09 +0200 | [diff] [blame] | 322 | timers_state.qemu_icount_bias = cur_icount |
| 323 | - (timers_state.qemu_icount << icount_time_shift); |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 324 | seqlock_write_end(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 325 | } |
| 326 | |
| 327 | static void icount_adjust_rt(void *opaque) |
| 328 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 329 | timer_mod(icount_rt_timer, |
Pavel Dovgalyuk | 1979b90 | 2015-01-12 15:00:43 +0300 | [diff] [blame] | 330 | qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL_RT) + 1000); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 331 | icount_adjust(); |
| 332 | } |
| 333 | |
| 334 | static void icount_adjust_vm(void *opaque) |
| 335 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 336 | timer_mod(icount_vm_timer, |
| 337 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + |
Rutuja Shah | 73bcb24 | 2016-03-21 21:32:30 +0530 | [diff] [blame] | 338 | NANOSECONDS_PER_SECOND / 10); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 339 | icount_adjust(); |
| 340 | } |
| 341 | |
| 342 | static int64_t qemu_icount_round(int64_t count) |
| 343 | { |
| 344 | return (count + (1 << icount_time_shift) - 1) >> icount_time_shift; |
| 345 | } |
| 346 | |
Pavel Dovgalyuk | efab87c | 2015-09-17 19:24:39 +0300 | [diff] [blame] | 347 | static void icount_warp_rt(void) |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 348 | { |
Alex Bennée | ccffff4 | 2016-04-04 15:35:48 +0100 | [diff] [blame] | 349 | unsigned seq; |
| 350 | int64_t warp_start; |
| 351 | |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 352 | /* The icount_warp_timer is rescheduled soon after vm_clock_warp_start |
| 353 | * changes from -1 to another value, so the race here is okay. |
| 354 | */ |
Alex Bennée | ccffff4 | 2016-04-04 15:35:48 +0100 | [diff] [blame] | 355 | do { |
| 356 | seq = seqlock_read_begin(&timers_state.vm_clock_seqlock); |
| 357 | warp_start = vm_clock_warp_start; |
| 358 | } while (seqlock_read_retry(&timers_state.vm_clock_seqlock, seq)); |
| 359 | |
| 360 | if (warp_start == -1) { |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 361 | return; |
| 362 | } |
| 363 | |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 364 | seqlock_write_begin(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 365 | if (runstate_is_running()) { |
Pavel Dovgalyuk | 8eda206 | 2015-09-17 19:24:28 +0300 | [diff] [blame] | 366 | int64_t clock = REPLAY_CLOCK(REPLAY_CLOCK_VIRTUAL_RT, |
| 367 | cpu_get_clock_locked()); |
Paolo Bonzini | 8ed961d | 2013-10-07 17:26:07 +0200 | [diff] [blame] | 368 | int64_t warp_delta; |
| 369 | |
| 370 | warp_delta = clock - vm_clock_warp_start; |
| 371 | if (use_icount == 2) { |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 372 | /* |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 373 | * In adaptive mode, do not let QEMU_CLOCK_VIRTUAL run too |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 374 | * far ahead of real time. |
| 375 | */ |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 376 | int64_t cur_icount = cpu_get_icount_locked(); |
Pavel Dovgalyuk | bf2a7dd | 2014-11-26 13:40:55 +0300 | [diff] [blame] | 377 | int64_t delta = clock - cur_icount; |
Paolo Bonzini | 8ed961d | 2013-10-07 17:26:07 +0200 | [diff] [blame] | 378 | warp_delta = MIN(warp_delta, delta); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 379 | } |
KONRAD Frederic | c96778b | 2014-08-01 01:37:09 +0200 | [diff] [blame] | 380 | timers_state.qemu_icount_bias += warp_delta; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 381 | } |
| 382 | vm_clock_warp_start = -1; |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 383 | seqlock_write_end(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 8ed961d | 2013-10-07 17:26:07 +0200 | [diff] [blame] | 384 | |
| 385 | if (qemu_clock_expired(QEMU_CLOCK_VIRTUAL)) { |
| 386 | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
| 387 | } |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 388 | } |
| 389 | |
Pavel Dovgalyuk | e76d179 | 2016-03-10 14:56:09 +0300 | [diff] [blame] | 390 | static void icount_timer_cb(void *opaque) |
Pavel Dovgalyuk | efab87c | 2015-09-17 19:24:39 +0300 | [diff] [blame] | 391 | { |
Pavel Dovgalyuk | e76d179 | 2016-03-10 14:56:09 +0300 | [diff] [blame] | 392 | /* No need for a checkpoint because the timer already synchronizes |
| 393 | * with CHECKPOINT_CLOCK_VIRTUAL_RT. |
| 394 | */ |
| 395 | icount_warp_rt(); |
Pavel Dovgalyuk | efab87c | 2015-09-17 19:24:39 +0300 | [diff] [blame] | 396 | } |
| 397 | |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 398 | void qtest_clock_warp(int64_t dest) |
| 399 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 400 | int64_t clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
Fam Zheng | efef88b | 2015-01-19 17:51:43 +0800 | [diff] [blame] | 401 | AioContext *aio_context; |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 402 | assert(qtest_enabled()); |
Fam Zheng | efef88b | 2015-01-19 17:51:43 +0800 | [diff] [blame] | 403 | aio_context = qemu_get_aio_context(); |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 404 | while (clock < dest) { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 405 | int64_t deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
Sergey Fedorov | c9299e2 | 2014-06-10 13:10:28 +0400 | [diff] [blame] | 406 | int64_t warp = qemu_soonest_timeout(dest - clock, deadline); |
Fam Zheng | efef88b | 2015-01-19 17:51:43 +0800 | [diff] [blame] | 407 | |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 408 | seqlock_write_begin(&timers_state.vm_clock_seqlock); |
KONRAD Frederic | c96778b | 2014-08-01 01:37:09 +0200 | [diff] [blame] | 409 | timers_state.qemu_icount_bias += warp; |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 410 | seqlock_write_end(&timers_state.vm_clock_seqlock); |
Paolo Bonzini | 17a15f1 | 2013-10-03 15:17:25 +0200 | [diff] [blame] | 411 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 412 | qemu_clock_run_timers(QEMU_CLOCK_VIRTUAL); |
Fam Zheng | efef88b | 2015-01-19 17:51:43 +0800 | [diff] [blame] | 413 | timerlist_run_timers(aio_context->tlg.tl[QEMU_CLOCK_VIRTUAL]); |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 414 | clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 415 | } |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 416 | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 417 | } |
| 418 | |
Pavel Dovgalyuk | e76d179 | 2016-03-10 14:56:09 +0300 | [diff] [blame] | 419 | void qemu_start_warp_timer(void) |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 420 | { |
Paolo Bonzini | ce78d18 | 2013-10-07 17:30:02 +0200 | [diff] [blame] | 421 | int64_t clock; |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 422 | int64_t deadline; |
| 423 | |
Pavel Dovgalyuk | e76d179 | 2016-03-10 14:56:09 +0300 | [diff] [blame] | 424 | if (!use_icount) { |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 425 | return; |
| 426 | } |
| 427 | |
Pavel Dovgalyuk | 8bd7f71 | 2015-09-17 19:24:44 +0300 | [diff] [blame] | 428 | /* Nothing to do if the VM is stopped: QEMU_CLOCK_VIRTUAL timers |
| 429 | * do not fire, so computing the deadline does not make sense. |
| 430 | */ |
| 431 | if (!runstate_is_running()) { |
| 432 | return; |
| 433 | } |
| 434 | |
| 435 | /* warp clock deterministically in record/replay mode */ |
Pavel Dovgalyuk | e76d179 | 2016-03-10 14:56:09 +0300 | [diff] [blame] | 436 | if (!replay_checkpoint(CHECKPOINT_CLOCK_WARP_START)) { |
Pavel Dovgalyuk | 8bd7f71 | 2015-09-17 19:24:44 +0300 | [diff] [blame] | 437 | return; |
| 438 | } |
| 439 | |
Paolo Bonzini | ce78d18 | 2013-10-07 17:30:02 +0200 | [diff] [blame] | 440 | if (!all_cpu_threads_idle()) { |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 441 | return; |
| 442 | } |
| 443 | |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 444 | if (qtest_enabled()) { |
| 445 | /* When testing, qtest commands advance icount. */ |
Pavel Dovgalyuk | e76d179 | 2016-03-10 14:56:09 +0300 | [diff] [blame] | 446 | return; |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 447 | } |
| 448 | |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 449 | /* We want to use the earliest deadline from ALL vm_clocks */ |
Pavel Dovgalyuk | bf2a7dd | 2014-11-26 13:40:55 +0300 | [diff] [blame] | 450 | clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL_RT); |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 451 | deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
Paolo Bonzini | ce78d18 | 2013-10-07 17:30:02 +0200 | [diff] [blame] | 452 | if (deadline < 0) { |
Victor CLEMENT | d7a0f71 | 2015-05-29 17:14:06 +0200 | [diff] [blame] | 453 | static bool notified; |
| 454 | if (!icount_sleep && !notified) { |
| 455 | error_report("WARNING: icount sleep disabled and no active timers"); |
| 456 | notified = true; |
| 457 | } |
Paolo Bonzini | ce78d18 | 2013-10-07 17:30:02 +0200 | [diff] [blame] | 458 | return; |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 459 | } |
| 460 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 461 | if (deadline > 0) { |
| 462 | /* |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 463 | * Ensure QEMU_CLOCK_VIRTUAL proceeds even when the virtual CPU goes to |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 464 | * sleep. Otherwise, the CPU might be waiting for a future timer |
| 465 | * interrupt to wake it up, but the interrupt never comes because |
| 466 | * 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] | 467 | * QEMU_CLOCK_VIRTUAL. |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 468 | */ |
Victor CLEMENT | 5045e9d9 | 2015-05-29 17:14:04 +0200 | [diff] [blame] | 469 | if (!icount_sleep) { |
| 470 | /* |
| 471 | * We never let VCPUs sleep in no sleep icount mode. |
| 472 | * If there is a pending QEMU_CLOCK_VIRTUAL timer we just advance |
| 473 | * to the next QEMU_CLOCK_VIRTUAL event and notify it. |
| 474 | * It is useful when we want a deterministic execution time, |
| 475 | * isolated from host latencies. |
| 476 | */ |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 477 | seqlock_write_begin(&timers_state.vm_clock_seqlock); |
Victor CLEMENT | 5045e9d9 | 2015-05-29 17:14:04 +0200 | [diff] [blame] | 478 | timers_state.qemu_icount_bias += deadline; |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 479 | seqlock_write_end(&timers_state.vm_clock_seqlock); |
Victor CLEMENT | 5045e9d9 | 2015-05-29 17:14:04 +0200 | [diff] [blame] | 480 | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
| 481 | } else { |
| 482 | /* |
| 483 | * We do stop VCPUs and only advance QEMU_CLOCK_VIRTUAL after some |
| 484 | * "real" time, (related to the time left until the next event) has |
| 485 | * passed. The QEMU_CLOCK_VIRTUAL_RT clock will do this. |
| 486 | * This avoids that the warps are visible externally; for example, |
| 487 | * you will not be sending network packets continuously instead of |
| 488 | * every 100ms. |
| 489 | */ |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 490 | seqlock_write_begin(&timers_state.vm_clock_seqlock); |
Victor CLEMENT | 5045e9d9 | 2015-05-29 17:14:04 +0200 | [diff] [blame] | 491 | if (vm_clock_warp_start == -1 || vm_clock_warp_start > clock) { |
| 492 | vm_clock_warp_start = clock; |
| 493 | } |
Emilio G. Cota | 03719e4 | 2016-06-08 14:55:21 -0400 | [diff] [blame] | 494 | seqlock_write_end(&timers_state.vm_clock_seqlock); |
Victor CLEMENT | 5045e9d9 | 2015-05-29 17:14:04 +0200 | [diff] [blame] | 495 | timer_mod_anticipate(icount_warp_timer, clock + deadline); |
Paolo Bonzini | ce78d18 | 2013-10-07 17:30:02 +0200 | [diff] [blame] | 496 | } |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 497 | } else if (deadline == 0) { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 498 | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 499 | } |
| 500 | } |
| 501 | |
Pavel Dovgalyuk | e76d179 | 2016-03-10 14:56:09 +0300 | [diff] [blame] | 502 | static void qemu_account_warp_timer(void) |
| 503 | { |
| 504 | if (!use_icount || !icount_sleep) { |
| 505 | return; |
| 506 | } |
| 507 | |
| 508 | /* Nothing to do if the VM is stopped: QEMU_CLOCK_VIRTUAL timers |
| 509 | * do not fire, so computing the deadline does not make sense. |
| 510 | */ |
| 511 | if (!runstate_is_running()) { |
| 512 | return; |
| 513 | } |
| 514 | |
| 515 | /* warp clock deterministically in record/replay mode */ |
| 516 | if (!replay_checkpoint(CHECKPOINT_CLOCK_WARP_ACCOUNT)) { |
| 517 | return; |
| 518 | } |
| 519 | |
| 520 | timer_del(icount_warp_timer); |
| 521 | icount_warp_rt(); |
| 522 | } |
| 523 | |
KONRAD Frederic | d09eae3 | 2014-08-01 01:37:10 +0200 | [diff] [blame] | 524 | static bool icount_state_needed(void *opaque) |
| 525 | { |
| 526 | return use_icount; |
| 527 | } |
| 528 | |
| 529 | /* |
| 530 | * This is a subsection for icount migration. |
| 531 | */ |
| 532 | static const VMStateDescription icount_vmstate_timers = { |
| 533 | .name = "timer/icount", |
| 534 | .version_id = 1, |
| 535 | .minimum_version_id = 1, |
Juan Quintela | 5cd8cad | 2014-09-23 14:09:54 +0200 | [diff] [blame] | 536 | .needed = icount_state_needed, |
KONRAD Frederic | d09eae3 | 2014-08-01 01:37:10 +0200 | [diff] [blame] | 537 | .fields = (VMStateField[]) { |
| 538 | VMSTATE_INT64(qemu_icount_bias, TimersState), |
| 539 | VMSTATE_INT64(qemu_icount, TimersState), |
| 540 | VMSTATE_END_OF_LIST() |
| 541 | } |
| 542 | }; |
| 543 | |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 544 | static const VMStateDescription vmstate_timers = { |
| 545 | .name = "timer", |
| 546 | .version_id = 2, |
| 547 | .minimum_version_id = 1, |
Juan Quintela | 35d0845 | 2014-04-16 16:01:33 +0200 | [diff] [blame] | 548 | .fields = (VMStateField[]) { |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 549 | VMSTATE_INT64(cpu_ticks_offset, TimersState), |
| 550 | VMSTATE_INT64(dummy, TimersState), |
| 551 | VMSTATE_INT64_V(cpu_clock_offset, TimersState, 2), |
| 552 | VMSTATE_END_OF_LIST() |
KONRAD Frederic | d09eae3 | 2014-08-01 01:37:10 +0200 | [diff] [blame] | 553 | }, |
Juan Quintela | 5cd8cad | 2014-09-23 14:09:54 +0200 | [diff] [blame] | 554 | .subsections = (const VMStateDescription*[]) { |
| 555 | &icount_vmstate_timers, |
| 556 | NULL |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 557 | } |
| 558 | }; |
| 559 | |
Paolo Bonzini | 14e6fe1 | 2016-10-31 10:36:08 +0100 | [diff] [blame] | 560 | static void cpu_throttle_thread(CPUState *cpu, run_on_cpu_data opaque) |
Jason J. Herne | 2adcc85 | 2015-09-08 13:12:33 -0400 | [diff] [blame] | 561 | { |
Jason J. Herne | 2adcc85 | 2015-09-08 13:12:33 -0400 | [diff] [blame] | 562 | double pct; |
| 563 | double throttle_ratio; |
| 564 | long sleeptime_ns; |
| 565 | |
| 566 | if (!cpu_throttle_get_percentage()) { |
| 567 | return; |
| 568 | } |
| 569 | |
| 570 | pct = (double)cpu_throttle_get_percentage()/100; |
| 571 | throttle_ratio = pct / (1 - pct); |
| 572 | sleeptime_ns = (long)(throttle_ratio * CPU_THROTTLE_TIMESLICE_NS); |
| 573 | |
| 574 | qemu_mutex_unlock_iothread(); |
| 575 | atomic_set(&cpu->throttle_thread_scheduled, 0); |
| 576 | g_usleep(sleeptime_ns / 1000); /* Convert ns to us for usleep call */ |
| 577 | qemu_mutex_lock_iothread(); |
| 578 | } |
| 579 | |
| 580 | static void cpu_throttle_timer_tick(void *opaque) |
| 581 | { |
| 582 | CPUState *cpu; |
| 583 | double pct; |
| 584 | |
| 585 | /* Stop the timer if needed */ |
| 586 | if (!cpu_throttle_get_percentage()) { |
| 587 | return; |
| 588 | } |
| 589 | CPU_FOREACH(cpu) { |
| 590 | if (!atomic_xchg(&cpu->throttle_thread_scheduled, 1)) { |
Paolo Bonzini | 14e6fe1 | 2016-10-31 10:36:08 +0100 | [diff] [blame] | 591 | async_run_on_cpu(cpu, cpu_throttle_thread, |
| 592 | RUN_ON_CPU_NULL); |
Jason J. Herne | 2adcc85 | 2015-09-08 13:12:33 -0400 | [diff] [blame] | 593 | } |
| 594 | } |
| 595 | |
| 596 | pct = (double)cpu_throttle_get_percentage()/100; |
| 597 | timer_mod(throttle_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL_RT) + |
| 598 | CPU_THROTTLE_TIMESLICE_NS / (1-pct)); |
| 599 | } |
| 600 | |
| 601 | void cpu_throttle_set(int new_throttle_pct) |
| 602 | { |
| 603 | /* Ensure throttle percentage is within valid range */ |
| 604 | new_throttle_pct = MIN(new_throttle_pct, CPU_THROTTLE_PCT_MAX); |
| 605 | new_throttle_pct = MAX(new_throttle_pct, CPU_THROTTLE_PCT_MIN); |
| 606 | |
| 607 | atomic_set(&throttle_percentage, new_throttle_pct); |
| 608 | |
| 609 | timer_mod(throttle_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL_RT) + |
| 610 | CPU_THROTTLE_TIMESLICE_NS); |
| 611 | } |
| 612 | |
| 613 | void cpu_throttle_stop(void) |
| 614 | { |
| 615 | atomic_set(&throttle_percentage, 0); |
| 616 | } |
| 617 | |
| 618 | bool cpu_throttle_active(void) |
| 619 | { |
| 620 | return (cpu_throttle_get_percentage() != 0); |
| 621 | } |
| 622 | |
| 623 | int cpu_throttle_get_percentage(void) |
| 624 | { |
| 625 | return atomic_read(&throttle_percentage); |
| 626 | } |
| 627 | |
Pavel Dovgalyuk | 4603ea0 | 2014-09-01 09:34:49 +0400 | [diff] [blame] | 628 | void cpu_ticks_init(void) |
| 629 | { |
Emilio G. Cota | ccdb3c1 | 2016-06-08 14:55:20 -0400 | [diff] [blame] | 630 | seqlock_init(&timers_state.vm_clock_seqlock); |
Pavel Dovgalyuk | 4603ea0 | 2014-09-01 09:34:49 +0400 | [diff] [blame] | 631 | vmstate_register(NULL, 0, &vmstate_timers, &timers_state); |
Jason J. Herne | 2adcc85 | 2015-09-08 13:12:33 -0400 | [diff] [blame] | 632 | throttle_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL_RT, |
| 633 | cpu_throttle_timer_tick, NULL); |
Pavel Dovgalyuk | 4603ea0 | 2014-09-01 09:34:49 +0400 | [diff] [blame] | 634 | } |
| 635 | |
Sebastian Tanase | 1ad9580 | 2014-07-25 11:56:28 +0200 | [diff] [blame] | 636 | void configure_icount(QemuOpts *opts, Error **errp) |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 637 | { |
Sebastian Tanase | 1ad9580 | 2014-07-25 11:56:28 +0200 | [diff] [blame] | 638 | const char *option; |
Sebastian Tanase | a8bfac3 | 2014-07-25 11:56:29 +0200 | [diff] [blame] | 639 | char *rem_str = NULL; |
Sebastian Tanase | 1ad9580 | 2014-07-25 11:56:28 +0200 | [diff] [blame] | 640 | |
Sebastian Tanase | 1ad9580 | 2014-07-25 11:56:28 +0200 | [diff] [blame] | 641 | option = qemu_opt_get(opts, "shift"); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 642 | if (!option) { |
Sebastian Tanase | a8bfac3 | 2014-07-25 11:56:29 +0200 | [diff] [blame] | 643 | if (qemu_opt_get(opts, "align") != NULL) { |
| 644 | error_setg(errp, "Please specify shift option when using align"); |
| 645 | } |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 646 | return; |
| 647 | } |
Victor CLEMENT | f1f4b57 | 2015-05-29 17:14:05 +0200 | [diff] [blame] | 648 | |
| 649 | icount_sleep = qemu_opt_get_bool(opts, "sleep", true); |
Victor CLEMENT | 5045e9d9 | 2015-05-29 17:14:04 +0200 | [diff] [blame] | 650 | if (icount_sleep) { |
| 651 | icount_warp_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL_RT, |
Pavel Dovgalyuk | e76d179 | 2016-03-10 14:56:09 +0300 | [diff] [blame] | 652 | icount_timer_cb, NULL); |
Victor CLEMENT | 5045e9d9 | 2015-05-29 17:14:04 +0200 | [diff] [blame] | 653 | } |
Victor CLEMENT | f1f4b57 | 2015-05-29 17:14:05 +0200 | [diff] [blame] | 654 | |
Sebastian Tanase | a8bfac3 | 2014-07-25 11:56:29 +0200 | [diff] [blame] | 655 | icount_align_option = qemu_opt_get_bool(opts, "align", false); |
Victor CLEMENT | f1f4b57 | 2015-05-29 17:14:05 +0200 | [diff] [blame] | 656 | |
| 657 | if (icount_align_option && !icount_sleep) { |
Pranith Kumar | 778d9f9 | 2016-02-26 10:16:51 -0500 | [diff] [blame] | 658 | error_setg(errp, "align=on and sleep=off are incompatible"); |
Victor CLEMENT | f1f4b57 | 2015-05-29 17:14:05 +0200 | [diff] [blame] | 659 | } |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 660 | if (strcmp(option, "auto") != 0) { |
Sebastian Tanase | a8bfac3 | 2014-07-25 11:56:29 +0200 | [diff] [blame] | 661 | errno = 0; |
| 662 | icount_time_shift = strtol(option, &rem_str, 0); |
| 663 | if (errno != 0 || *rem_str != '\0' || !strlen(option)) { |
| 664 | error_setg(errp, "icount: Invalid shift value"); |
| 665 | } |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 666 | use_icount = 1; |
| 667 | return; |
Sebastian Tanase | a8bfac3 | 2014-07-25 11:56:29 +0200 | [diff] [blame] | 668 | } else if (icount_align_option) { |
| 669 | error_setg(errp, "shift=auto and align=on are incompatible"); |
Victor CLEMENT | f1f4b57 | 2015-05-29 17:14:05 +0200 | [diff] [blame] | 670 | } else if (!icount_sleep) { |
Pranith Kumar | 778d9f9 | 2016-02-26 10:16:51 -0500 | [diff] [blame] | 671 | error_setg(errp, "shift=auto and sleep=off are incompatible"); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 672 | } |
| 673 | |
| 674 | use_icount = 2; |
| 675 | |
| 676 | /* 125MIPS seems a reasonable initial guess at the guest speed. |
| 677 | It will be corrected fairly quickly anyway. */ |
| 678 | icount_time_shift = 3; |
| 679 | |
| 680 | /* Have both realtime and virtual time triggers for speed adjustment. |
| 681 | The realtime trigger catches emulated time passing too slowly, |
| 682 | the virtual time trigger catches emulated time passing too fast. |
| 683 | Realtime triggers occur even when idle, so use them less frequently |
| 684 | than VM triggers. */ |
Pavel Dovgalyuk | bf2a7dd | 2014-11-26 13:40:55 +0300 | [diff] [blame] | 685 | icount_rt_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL_RT, |
| 686 | icount_adjust_rt, NULL); |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 687 | timer_mod(icount_rt_timer, |
Pavel Dovgalyuk | bf2a7dd | 2014-11-26 13:40:55 +0300 | [diff] [blame] | 688 | qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL_RT) + 1000); |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 689 | icount_vm_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, |
| 690 | icount_adjust_vm, NULL); |
| 691 | timer_mod(icount_vm_timer, |
| 692 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + |
Rutuja Shah | 73bcb24 | 2016-03-21 21:32:30 +0530 | [diff] [blame] | 693 | NANOSECONDS_PER_SECOND / 10); |
Paolo Bonzini | 946fb27 | 2011-09-12 13:57:37 +0200 | [diff] [blame] | 694 | } |
| 695 | |
| 696 | /***********************************************************/ |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 697 | void hw_error(const char *fmt, ...) |
| 698 | { |
| 699 | va_list ap; |
Andreas Färber | 55e5c28 | 2012-12-17 06:18:02 +0100 | [diff] [blame] | 700 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 701 | |
| 702 | va_start(ap, fmt); |
| 703 | fprintf(stderr, "qemu: hardware error: "); |
| 704 | vfprintf(stderr, fmt, ap); |
| 705 | fprintf(stderr, "\n"); |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 706 | CPU_FOREACH(cpu) { |
Andreas Färber | 55e5c28 | 2012-12-17 06:18:02 +0100 | [diff] [blame] | 707 | fprintf(stderr, "CPU #%d:\n", cpu->cpu_index); |
Andreas Färber | 878096e | 2013-05-27 01:33:50 +0200 | [diff] [blame] | 708 | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_FPU); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 709 | } |
| 710 | va_end(ap); |
| 711 | abort(); |
| 712 | } |
| 713 | |
| 714 | void cpu_synchronize_all_states(void) |
| 715 | { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 716 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 717 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 718 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 719 | cpu_synchronize_state(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 720 | } |
| 721 | } |
| 722 | |
| 723 | void cpu_synchronize_all_post_reset(void) |
| 724 | { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 725 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 726 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 727 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 728 | cpu_synchronize_post_reset(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 729 | } |
| 730 | } |
| 731 | |
| 732 | void cpu_synchronize_all_post_init(void) |
| 733 | { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 734 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 735 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 736 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 737 | cpu_synchronize_post_init(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 738 | } |
| 739 | } |
| 740 | |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 741 | static int do_vm_stop(RunState state) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 742 | { |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 743 | int ret = 0; |
| 744 | |
Luiz Capitulino | 1354869 | 2011-07-29 15:36:43 -0300 | [diff] [blame] | 745 | if (runstate_is_running()) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 746 | cpu_disable_ticks(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 747 | pause_all_vcpus(); |
Luiz Capitulino | f5bbfba | 2011-07-29 15:04:45 -0300 | [diff] [blame] | 748 | runstate_set(state); |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 749 | vm_state_notify(0, state); |
Wenchao Xia | a4e15de | 2014-06-18 08:43:36 +0200 | [diff] [blame] | 750 | qapi_event_send_stop(&error_abort); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 751 | } |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 752 | |
Kevin Wolf | 594a45c | 2013-07-18 14:52:19 +0200 | [diff] [blame] | 753 | bdrv_drain_all(); |
Pavel Dovgalyuk | 6d0ceb8 | 2016-09-26 11:08:16 +0300 | [diff] [blame] | 754 | replay_disable_events(); |
John Snow | 22af08e | 2016-09-22 21:45:51 -0400 | [diff] [blame] | 755 | ret = bdrv_flush_all(); |
Kevin Wolf | 594a45c | 2013-07-18 14:52:19 +0200 | [diff] [blame] | 756 | |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 757 | return ret; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 758 | } |
| 759 | |
Andreas Färber | a1fcaa7 | 2012-05-02 23:42:26 +0200 | [diff] [blame] | 760 | static bool cpu_can_run(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 761 | { |
Andreas Färber | 4fdeee7 | 2012-05-02 23:10:09 +0200 | [diff] [blame] | 762 | if (cpu->stop) { |
Andreas Färber | a1fcaa7 | 2012-05-02 23:42:26 +0200 | [diff] [blame] | 763 | return false; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 764 | } |
Tiejun Chen | 321bc0b | 2013-08-02 09:43:09 +0800 | [diff] [blame] | 765 | if (cpu_is_stopped(cpu)) { |
Andreas Färber | a1fcaa7 | 2012-05-02 23:42:26 +0200 | [diff] [blame] | 766 | return false; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 767 | } |
Andreas Färber | a1fcaa7 | 2012-05-02 23:42:26 +0200 | [diff] [blame] | 768 | return true; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 769 | } |
| 770 | |
Andreas Färber | 9132504 | 2013-05-27 02:07:49 +0200 | [diff] [blame] | 771 | static void cpu_handle_guest_debug(CPUState *cpu) |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 772 | { |
Andreas Färber | 64f6b34 | 2013-05-27 02:06:09 +0200 | [diff] [blame] | 773 | gdb_set_stop_cpu(cpu); |
Jan Kiszka | 8cf7171 | 2011-02-07 12:19:16 +0100 | [diff] [blame] | 774 | qemu_system_debug_request(); |
Andreas Färber | f324e76 | 2012-05-02 23:26:21 +0200 | [diff] [blame] | 775 | cpu->stopped = true; |
Jan Kiszka | 3c638d0 | 2010-06-25 16:56:56 +0200 | [diff] [blame] | 776 | } |
| 777 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 778 | #ifdef CONFIG_LINUX |
| 779 | static void sigbus_reraise(void) |
| 780 | { |
| 781 | sigset_t set; |
| 782 | struct sigaction action; |
| 783 | |
| 784 | memset(&action, 0, sizeof(action)); |
| 785 | action.sa_handler = SIG_DFL; |
| 786 | if (!sigaction(SIGBUS, &action, NULL)) { |
| 787 | raise(SIGBUS); |
| 788 | sigemptyset(&set); |
| 789 | sigaddset(&set, SIGBUS); |
Peter Maydell | a2d1761 | 2016-05-16 18:33:59 +0100 | [diff] [blame] | 790 | pthread_sigmask(SIG_UNBLOCK, &set, NULL); |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 791 | } |
| 792 | perror("Failed to re-raise SIGBUS!\n"); |
| 793 | abort(); |
| 794 | } |
| 795 | |
| 796 | static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo, |
| 797 | void *ctx) |
| 798 | { |
| 799 | if (kvm_on_sigbus(siginfo->ssi_code, |
| 800 | (void *)(intptr_t)siginfo->ssi_addr)) { |
| 801 | sigbus_reraise(); |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | static void qemu_init_sigbus(void) |
| 806 | { |
| 807 | struct sigaction action; |
| 808 | |
| 809 | memset(&action, 0, sizeof(action)); |
| 810 | action.sa_flags = SA_SIGINFO; |
| 811 | action.sa_sigaction = (void (*)(int, siginfo_t*, void*))sigbus_handler; |
| 812 | sigaction(SIGBUS, &action, NULL); |
| 813 | |
| 814 | prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0); |
| 815 | } |
| 816 | |
Andreas Färber | 290adf3 | 2013-01-17 09:30:27 +0100 | [diff] [blame] | 817 | static void qemu_kvm_eat_signals(CPUState *cpu) |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 818 | { |
| 819 | struct timespec ts = { 0, 0 }; |
| 820 | siginfo_t siginfo; |
| 821 | sigset_t waitset; |
| 822 | sigset_t chkset; |
| 823 | int r; |
| 824 | |
| 825 | sigemptyset(&waitset); |
| 826 | sigaddset(&waitset, SIG_IPI); |
| 827 | sigaddset(&waitset, SIGBUS); |
| 828 | |
| 829 | do { |
| 830 | r = sigtimedwait(&waitset, &siginfo, &ts); |
| 831 | if (r == -1 && !(errno == EAGAIN || errno == EINTR)) { |
| 832 | perror("sigtimedwait"); |
| 833 | exit(1); |
| 834 | } |
| 835 | |
| 836 | switch (r) { |
| 837 | case SIGBUS: |
Andreas Färber | 290adf3 | 2013-01-17 09:30:27 +0100 | [diff] [blame] | 838 | if (kvm_on_sigbus_vcpu(cpu, siginfo.si_code, siginfo.si_addr)) { |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 839 | sigbus_reraise(); |
| 840 | } |
| 841 | break; |
| 842 | default: |
| 843 | break; |
| 844 | } |
| 845 | |
| 846 | r = sigpending(&chkset); |
| 847 | if (r == -1) { |
| 848 | perror("sigpending"); |
| 849 | exit(1); |
| 850 | } |
| 851 | } while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS)); |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 852 | } |
| 853 | |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 854 | #else /* !CONFIG_LINUX */ |
| 855 | |
| 856 | static void qemu_init_sigbus(void) |
| 857 | { |
| 858 | } |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 859 | |
Andreas Färber | 290adf3 | 2013-01-17 09:30:27 +0100 | [diff] [blame] | 860 | static void qemu_kvm_eat_signals(CPUState *cpu) |
Jan Kiszka | 1ab3c6c | 2011-03-15 12:26:12 +0100 | [diff] [blame] | 861 | { |
| 862 | } |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 863 | #endif /* !CONFIG_LINUX */ |
| 864 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 865 | #ifndef _WIN32 |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 866 | static void dummy_signal(int sig) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 867 | { |
| 868 | } |
| 869 | |
Andreas Färber | 13618e0 | 2013-05-26 23:41:00 +0200 | [diff] [blame] | 870 | static void qemu_kvm_init_cpu_signals(CPUState *cpu) |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 871 | { |
| 872 | int r; |
| 873 | sigset_t set; |
| 874 | struct sigaction sigact; |
| 875 | |
| 876 | memset(&sigact, 0, sizeof(sigact)); |
| 877 | sigact.sa_handler = dummy_signal; |
| 878 | sigaction(SIG_IPI, &sigact, NULL); |
| 879 | |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 880 | pthread_sigmask(SIG_BLOCK, NULL, &set); |
| 881 | sigdelset(&set, SIG_IPI); |
| 882 | sigdelset(&set, SIGBUS); |
Andreas Färber | 491d6e8 | 2013-05-26 23:38:10 +0200 | [diff] [blame] | 883 | r = kvm_set_signal_mask(cpu, &set); |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 884 | if (r) { |
| 885 | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r)); |
| 886 | exit(1); |
| 887 | } |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 888 | } |
| 889 | |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 890 | #else /* _WIN32 */ |
Andreas Färber | 13618e0 | 2013-05-26 23:41:00 +0200 | [diff] [blame] | 891 | static void qemu_kvm_init_cpu_signals(CPUState *cpu) |
Paolo Bonzini | 714bd04 | 2011-03-12 17:44:06 +0100 | [diff] [blame] | 892 | { |
| 893 | abort(); |
| 894 | } |
Jan Kiszka | 55f8d6a | 2011-02-01 22:15:52 +0100 | [diff] [blame] | 895 | #endif /* _WIN32 */ |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 896 | |
Stefan Weil | b2532d8 | 2012-09-27 07:41:42 +0200 | [diff] [blame] | 897 | static QemuMutex qemu_global_mutex; |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 898 | static QemuCond qemu_io_proceeded_cond; |
Paolo Bonzini | 6b49809 | 2015-02-27 19:58:23 +0100 | [diff] [blame] | 899 | static unsigned iothread_requesting_mutex; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 900 | |
| 901 | static QemuThread io_thread; |
| 902 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 903 | /* cpu creation */ |
| 904 | static QemuCond qemu_cpu_cond; |
| 905 | /* system init */ |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 906 | static QemuCond qemu_pause_cond; |
| 907 | |
Paolo Bonzini | d3b12f5 | 2011-09-13 10:30:52 +0200 | [diff] [blame] | 908 | void qemu_init_cpu_loop(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 909 | { |
Jan Kiszka | 6d9cb73 | 2011-02-01 22:15:58 +0100 | [diff] [blame] | 910 | qemu_init_sigbus(); |
Anthony Liguori | ed94592 | 2011-02-08 18:18:18 +0100 | [diff] [blame] | 911 | qemu_cond_init(&qemu_cpu_cond); |
Anthony Liguori | ed94592 | 2011-02-08 18:18:18 +0100 | [diff] [blame] | 912 | qemu_cond_init(&qemu_pause_cond); |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 913 | qemu_cond_init(&qemu_io_proceeded_cond); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 914 | qemu_mutex_init(&qemu_global_mutex); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 915 | |
Jan Kiszka | b7680cb | 2011-03-12 17:43:51 +0100 | [diff] [blame] | 916 | qemu_thread_get_self(&io_thread); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 917 | } |
| 918 | |
Paolo Bonzini | 14e6fe1 | 2016-10-31 10:36:08 +0100 | [diff] [blame] | 919 | void run_on_cpu(CPUState *cpu, run_on_cpu_func func, run_on_cpu_data data) |
Marcelo Tosatti | e82bcec | 2010-05-04 09:45:22 -0300 | [diff] [blame] | 920 | { |
Sergey Fedorov | d148d90 | 2016-08-29 09:51:00 +0200 | [diff] [blame] | 921 | do_run_on_cpu(cpu, func, data, &qemu_global_mutex); |
Chegu Vinod | 3c02270 | 2013-06-24 03:49:41 -0600 | [diff] [blame] | 922 | } |
| 923 | |
Gu Zheng | 4c055ab | 2016-05-12 09:18:13 +0530 | [diff] [blame] | 924 | static void qemu_kvm_destroy_vcpu(CPUState *cpu) |
| 925 | { |
| 926 | if (kvm_destroy_vcpu(cpu) < 0) { |
| 927 | error_report("kvm_destroy_vcpu failed"); |
| 928 | exit(EXIT_FAILURE); |
| 929 | } |
| 930 | } |
| 931 | |
| 932 | static void qemu_tcg_destroy_vcpu(CPUState *cpu) |
| 933 | { |
| 934 | } |
| 935 | |
Andreas Färber | 509a0d7 | 2012-05-03 02:18:09 +0200 | [diff] [blame] | 936 | static void qemu_wait_io_event_common(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 937 | { |
Andreas Färber | 4fdeee7 | 2012-05-02 23:10:09 +0200 | [diff] [blame] | 938 | if (cpu->stop) { |
| 939 | cpu->stop = false; |
Andreas Färber | f324e76 | 2012-05-02 23:26:21 +0200 | [diff] [blame] | 940 | cpu->stopped = true; |
Dr. David Alan Gilbert | 96bce68 | 2016-01-25 10:08:18 +0000 | [diff] [blame] | 941 | qemu_cond_broadcast(&qemu_pause_cond); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 942 | } |
Sergey Fedorov | a5403c6 | 2016-08-02 18:27:36 +0100 | [diff] [blame] | 943 | process_queued_cpu_work(cpu); |
Andreas Färber | 216fc9a | 2012-05-02 17:49:49 +0200 | [diff] [blame] | 944 | cpu->thread_kicked = false; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 945 | } |
| 946 | |
KONRAD Frederic | d5f8d61 | 2015-08-10 17:27:06 +0200 | [diff] [blame] | 947 | static void qemu_tcg_wait_io_event(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 948 | { |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 949 | while (all_cpu_threads_idle()) { |
KONRAD Frederic | d5f8d61 | 2015-08-10 17:27:06 +0200 | [diff] [blame] | 950 | qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex); |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 951 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 952 | |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 953 | while (iothread_requesting_mutex) { |
| 954 | qemu_cond_wait(&qemu_io_proceeded_cond, &qemu_global_mutex); |
| 955 | } |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 956 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 957 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 958 | qemu_wait_io_event_common(cpu); |
Jan Kiszka | 6cabe1f | 2010-06-25 16:56:53 +0200 | [diff] [blame] | 959 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 960 | } |
| 961 | |
Andreas Färber | fd529e8 | 2013-05-26 23:24:55 +0200 | [diff] [blame] | 962 | static void qemu_kvm_wait_io_event(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 963 | { |
Andreas Färber | a98ae1d | 2013-05-26 23:21:08 +0200 | [diff] [blame] | 964 | while (cpu_thread_is_idle(cpu)) { |
Andreas Färber | f5c121b | 2012-05-03 01:22:49 +0200 | [diff] [blame] | 965 | qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex); |
Jan Kiszka | 1640032 | 2011-02-09 16:29:37 +0100 | [diff] [blame] | 966 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 967 | |
Andreas Färber | 290adf3 | 2013-01-17 09:30:27 +0100 | [diff] [blame] | 968 | qemu_kvm_eat_signals(cpu); |
Andreas Färber | 509a0d7 | 2012-05-03 02:18:09 +0200 | [diff] [blame] | 969 | qemu_wait_io_event_common(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 970 | } |
| 971 | |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 972 | static void *qemu_kvm_cpu_thread_fn(void *arg) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 973 | { |
Andreas Färber | 48a106b | 2013-05-27 02:20:39 +0200 | [diff] [blame] | 974 | CPUState *cpu = arg; |
Jan Kiszka | 84b4915 | 2011-02-01 22:15:50 +0100 | [diff] [blame] | 975 | int r; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 976 | |
Paolo Bonzini | ab28bd2 | 2015-07-09 08:55:38 +0200 | [diff] [blame] | 977 | rcu_register_thread(); |
| 978 | |
Paolo Bonzini | 2e7f7a3 | 2015-06-18 18:47:18 +0200 | [diff] [blame] | 979 | qemu_mutex_lock_iothread(); |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 980 | qemu_thread_get_self(cpu->thread); |
Andreas Färber | 9f09e18 | 2012-05-03 06:59:07 +0200 | [diff] [blame] | 981 | cpu->thread_id = qemu_get_thread_id(); |
Pavel Dovgalyuk | 626cf8f | 2014-12-08 10:53:17 +0300 | [diff] [blame] | 982 | cpu->can_do_io = 1; |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 983 | current_cpu = cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 984 | |
Andreas Färber | 504134d | 2012-12-17 06:38:45 +0100 | [diff] [blame] | 985 | r = kvm_init_vcpu(cpu); |
Jan Kiszka | 84b4915 | 2011-02-01 22:15:50 +0100 | [diff] [blame] | 986 | if (r < 0) { |
| 987 | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r)); |
| 988 | exit(1); |
| 989 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 990 | |
Andreas Färber | 13618e0 | 2013-05-26 23:41:00 +0200 | [diff] [blame] | 991 | qemu_kvm_init_cpu_signals(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 992 | |
| 993 | /* signal CPU creation */ |
Andreas Färber | 61a4621 | 2012-05-02 22:49:36 +0200 | [diff] [blame] | 994 | cpu->created = true; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 995 | qemu_cond_signal(&qemu_cpu_cond); |
| 996 | |
Gu Zheng | 4c055ab | 2016-05-12 09:18:13 +0530 | [diff] [blame] | 997 | do { |
Andreas Färber | a1fcaa7 | 2012-05-02 23:42:26 +0200 | [diff] [blame] | 998 | if (cpu_can_run(cpu)) { |
Andreas Färber | 1458c36 | 2013-05-26 23:46:55 +0200 | [diff] [blame] | 999 | r = kvm_cpu_exec(cpu); |
Jan Kiszka | 83f338f | 2011-02-07 12:19:17 +0100 | [diff] [blame] | 1000 | if (r == EXCP_DEBUG) { |
Andreas Färber | 9132504 | 2013-05-27 02:07:49 +0200 | [diff] [blame] | 1001 | cpu_handle_guest_debug(cpu); |
Jan Kiszka | 83f338f | 2011-02-07 12:19:17 +0100 | [diff] [blame] | 1002 | } |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1003 | } |
Andreas Färber | fd529e8 | 2013-05-26 23:24:55 +0200 | [diff] [blame] | 1004 | qemu_kvm_wait_io_event(cpu); |
Gu Zheng | 4c055ab | 2016-05-12 09:18:13 +0530 | [diff] [blame] | 1005 | } while (!cpu->unplug || cpu_can_run(cpu)); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1006 | |
Gu Zheng | 4c055ab | 2016-05-12 09:18:13 +0530 | [diff] [blame] | 1007 | qemu_kvm_destroy_vcpu(cpu); |
Bharata B Rao | 2c57904 | 2016-05-12 09:18:14 +0530 | [diff] [blame] | 1008 | cpu->created = false; |
| 1009 | qemu_cond_signal(&qemu_cpu_cond); |
Gu Zheng | 4c055ab | 2016-05-12 09:18:13 +0530 | [diff] [blame] | 1010 | qemu_mutex_unlock_iothread(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1011 | return NULL; |
| 1012 | } |
| 1013 | |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1014 | static void *qemu_dummy_cpu_thread_fn(void *arg) |
| 1015 | { |
| 1016 | #ifdef _WIN32 |
| 1017 | fprintf(stderr, "qtest is not supported under Windows\n"); |
| 1018 | exit(1); |
| 1019 | #else |
Andreas Färber | 10a9021 | 2013-05-27 02:24:35 +0200 | [diff] [blame] | 1020 | CPUState *cpu = arg; |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1021 | sigset_t waitset; |
| 1022 | int r; |
| 1023 | |
Paolo Bonzini | ab28bd2 | 2015-07-09 08:55:38 +0200 | [diff] [blame] | 1024 | rcu_register_thread(); |
| 1025 | |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1026 | qemu_mutex_lock_iothread(); |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1027 | qemu_thread_get_self(cpu->thread); |
Andreas Färber | 9f09e18 | 2012-05-03 06:59:07 +0200 | [diff] [blame] | 1028 | cpu->thread_id = qemu_get_thread_id(); |
Pavel Dovgalyuk | 626cf8f | 2014-12-08 10:53:17 +0300 | [diff] [blame] | 1029 | cpu->can_do_io = 1; |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1030 | |
| 1031 | sigemptyset(&waitset); |
| 1032 | sigaddset(&waitset, SIG_IPI); |
| 1033 | |
| 1034 | /* signal CPU creation */ |
Andreas Färber | 61a4621 | 2012-05-02 22:49:36 +0200 | [diff] [blame] | 1035 | cpu->created = true; |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1036 | qemu_cond_signal(&qemu_cpu_cond); |
| 1037 | |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 1038 | current_cpu = cpu; |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1039 | while (1) { |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 1040 | current_cpu = NULL; |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1041 | qemu_mutex_unlock_iothread(); |
| 1042 | do { |
| 1043 | int sig; |
| 1044 | r = sigwait(&waitset, &sig); |
| 1045 | } while (r == -1 && (errno == EAGAIN || errno == EINTR)); |
| 1046 | if (r == -1) { |
| 1047 | perror("sigwait"); |
| 1048 | exit(1); |
| 1049 | } |
| 1050 | qemu_mutex_lock_iothread(); |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 1051 | current_cpu = cpu; |
Andreas Färber | 509a0d7 | 2012-05-03 02:18:09 +0200 | [diff] [blame] | 1052 | qemu_wait_io_event_common(cpu); |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1053 | } |
| 1054 | |
| 1055 | return NULL; |
| 1056 | #endif |
| 1057 | } |
| 1058 | |
Alex Bennée | 1be7fcb | 2016-10-27 16:10:08 +0100 | [diff] [blame] | 1059 | static int64_t tcg_get_icount_limit(void) |
| 1060 | { |
| 1061 | int64_t deadline; |
| 1062 | |
| 1063 | if (replay_mode != REPLAY_MODE_PLAY) { |
| 1064 | deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
| 1065 | |
| 1066 | /* Maintain prior (possibly buggy) behaviour where if no deadline |
| 1067 | * was set (as there is no QEMU_CLOCK_VIRTUAL timer) or it is more than |
| 1068 | * INT32_MAX nanoseconds ahead, we still use INT32_MAX |
| 1069 | * nanoseconds. |
| 1070 | */ |
| 1071 | if ((deadline < 0) || (deadline > INT32_MAX)) { |
| 1072 | deadline = INT32_MAX; |
| 1073 | } |
| 1074 | |
| 1075 | return qemu_icount_round(deadline); |
| 1076 | } else { |
| 1077 | return replay_get_instructions(); |
| 1078 | } |
| 1079 | } |
| 1080 | |
Alex Bennée | 12e9700 | 2016-10-27 16:10:14 +0100 | [diff] [blame] | 1081 | static void handle_icount_deadline(void) |
| 1082 | { |
| 1083 | if (use_icount) { |
| 1084 | int64_t deadline = |
| 1085 | qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
| 1086 | |
| 1087 | if (deadline == 0) { |
| 1088 | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
| 1089 | } |
| 1090 | } |
| 1091 | } |
| 1092 | |
Alex Bennée | 1be7fcb | 2016-10-27 16:10:08 +0100 | [diff] [blame] | 1093 | static int tcg_cpu_exec(CPUState *cpu) |
| 1094 | { |
| 1095 | int ret; |
| 1096 | #ifdef CONFIG_PROFILER |
| 1097 | int64_t ti; |
| 1098 | #endif |
| 1099 | |
| 1100 | #ifdef CONFIG_PROFILER |
| 1101 | ti = profile_getclock(); |
| 1102 | #endif |
| 1103 | if (use_icount) { |
| 1104 | int64_t count; |
| 1105 | int decr; |
| 1106 | timers_state.qemu_icount -= (cpu->icount_decr.u16.low |
| 1107 | + cpu->icount_extra); |
| 1108 | cpu->icount_decr.u16.low = 0; |
| 1109 | cpu->icount_extra = 0; |
| 1110 | count = tcg_get_icount_limit(); |
| 1111 | timers_state.qemu_icount += count; |
| 1112 | decr = (count > 0xffff) ? 0xffff : count; |
| 1113 | count -= decr; |
| 1114 | cpu->icount_decr.u16.low = decr; |
| 1115 | cpu->icount_extra = count; |
| 1116 | } |
| 1117 | cpu_exec_start(cpu); |
| 1118 | ret = cpu_exec(cpu); |
| 1119 | cpu_exec_end(cpu); |
| 1120 | #ifdef CONFIG_PROFILER |
| 1121 | tcg_time += profile_getclock() - ti; |
| 1122 | #endif |
| 1123 | if (use_icount) { |
| 1124 | /* Fold pending instructions back into the |
| 1125 | instruction counter, and clear the interrupt flag. */ |
| 1126 | timers_state.qemu_icount -= (cpu->icount_decr.u16.low |
| 1127 | + cpu->icount_extra); |
| 1128 | cpu->icount_decr.u32 = 0; |
| 1129 | cpu->icount_extra = 0; |
| 1130 | replay_account_executed_instructions(); |
| 1131 | } |
| 1132 | return ret; |
| 1133 | } |
| 1134 | |
Alex Bennée | c93bbbe | 2016-10-27 16:10:09 +0100 | [diff] [blame] | 1135 | /* Destroy any remaining vCPUs which have been unplugged and have |
| 1136 | * finished running |
| 1137 | */ |
| 1138 | static void deal_with_unplugged_cpus(void) |
Alex Bennée | 1be7fcb | 2016-10-27 16:10:08 +0100 | [diff] [blame] | 1139 | { |
Alex Bennée | c93bbbe | 2016-10-27 16:10:09 +0100 | [diff] [blame] | 1140 | CPUState *cpu; |
Alex Bennée | 1be7fcb | 2016-10-27 16:10:08 +0100 | [diff] [blame] | 1141 | |
Alex Bennée | c93bbbe | 2016-10-27 16:10:09 +0100 | [diff] [blame] | 1142 | CPU_FOREACH(cpu) { |
| 1143 | if (cpu->unplug && !cpu_can_run(cpu)) { |
| 1144 | qemu_tcg_destroy_vcpu(cpu); |
| 1145 | cpu->created = false; |
| 1146 | qemu_cond_signal(&qemu_cpu_cond); |
Alex Bennée | 1be7fcb | 2016-10-27 16:10:08 +0100 | [diff] [blame] | 1147 | break; |
| 1148 | } |
| 1149 | } |
Alex Bennée | 1be7fcb | 2016-10-27 16:10:08 +0100 | [diff] [blame] | 1150 | } |
Jan Kiszka | bdb7ca6 | 2011-09-26 09:40:39 +0200 | [diff] [blame] | 1151 | |
Jan Kiszka | 7e97cd8 | 2011-02-07 12:19:12 +0100 | [diff] [blame] | 1152 | static void *qemu_tcg_cpu_thread_fn(void *arg) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1153 | { |
Andreas Färber | c3586ba | 2012-05-03 01:41:24 +0200 | [diff] [blame] | 1154 | CPUState *cpu = arg; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1155 | |
Paolo Bonzini | ab28bd2 | 2015-07-09 08:55:38 +0200 | [diff] [blame] | 1156 | rcu_register_thread(); |
| 1157 | |
Paolo Bonzini | 2e7f7a3 | 2015-06-18 18:47:18 +0200 | [diff] [blame] | 1158 | qemu_mutex_lock_iothread(); |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1159 | qemu_thread_get_self(cpu->thread); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1160 | |
Andreas Färber | 38fcbd3 | 2013-07-07 19:50:23 +0200 | [diff] [blame] | 1161 | CPU_FOREACH(cpu) { |
| 1162 | cpu->thread_id = qemu_get_thread_id(); |
| 1163 | cpu->created = true; |
Pavel Dovgalyuk | 626cf8f | 2014-12-08 10:53:17 +0300 | [diff] [blame] | 1164 | cpu->can_do_io = 1; |
Andreas Färber | 38fcbd3 | 2013-07-07 19:50:23 +0200 | [diff] [blame] | 1165 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1166 | qemu_cond_signal(&qemu_cpu_cond); |
| 1167 | |
Jan Kiszka | fa7d186 | 2011-08-22 18:35:25 +0200 | [diff] [blame] | 1168 | /* wait for initial kick-off after machine start */ |
Emilio G. Cota | c28e399 | 2015-04-27 12:45:28 -0400 | [diff] [blame] | 1169 | while (first_cpu->stopped) { |
KONRAD Frederic | d5f8d61 | 2015-08-10 17:27:06 +0200 | [diff] [blame] | 1170 | qemu_cond_wait(first_cpu->halt_cond, &qemu_global_mutex); |
Jan Kiszka | 8e564b4 | 2012-02-17 18:31:15 +0100 | [diff] [blame] | 1171 | |
| 1172 | /* process any pending work */ |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1173 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1174 | qemu_wait_io_event_common(cpu); |
Jan Kiszka | 8e564b4 | 2012-02-17 18:31:15 +0100 | [diff] [blame] | 1175 | } |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1176 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1177 | |
Paolo Bonzini | 21618b3 | 2015-02-27 20:01:03 +0100 | [diff] [blame] | 1178 | /* process any pending work */ |
Paolo Bonzini | aed807c | 2015-08-18 06:43:15 -0700 | [diff] [blame] | 1179 | atomic_mb_set(&exit_request, 1); |
Paolo Bonzini | 21618b3 | 2015-02-27 20:01:03 +0100 | [diff] [blame] | 1180 | |
Alex Bennée | c93bbbe | 2016-10-27 16:10:09 +0100 | [diff] [blame] | 1181 | cpu = first_cpu; |
| 1182 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1183 | while (1) { |
Alex Bennée | c93bbbe | 2016-10-27 16:10:09 +0100 | [diff] [blame] | 1184 | /* Account partial waits to QEMU_CLOCK_VIRTUAL. */ |
| 1185 | qemu_account_warp_timer(); |
| 1186 | |
| 1187 | if (!cpu) { |
| 1188 | cpu = first_cpu; |
| 1189 | } |
| 1190 | |
| 1191 | for (; cpu != NULL && !exit_request; cpu = CPU_NEXT(cpu)) { |
| 1192 | |
| 1193 | qemu_clock_enable(QEMU_CLOCK_VIRTUAL, |
| 1194 | (cpu->singlestep_enabled & SSTEP_NOTIMER) == 0); |
| 1195 | |
| 1196 | if (cpu_can_run(cpu)) { |
| 1197 | int r; |
| 1198 | r = tcg_cpu_exec(cpu); |
| 1199 | if (r == EXCP_DEBUG) { |
| 1200 | cpu_handle_guest_debug(cpu); |
| 1201 | break; |
| 1202 | } |
| 1203 | } else if (cpu->stop || cpu->stopped) { |
| 1204 | if (cpu->unplug) { |
| 1205 | cpu = CPU_NEXT(cpu); |
| 1206 | } |
| 1207 | break; |
| 1208 | } |
| 1209 | |
| 1210 | } /* for cpu.. */ |
| 1211 | |
| 1212 | /* Pairs with smp_wmb in qemu_cpu_kick. */ |
| 1213 | atomic_mb_set(&exit_request, 0); |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 1214 | |
Alex Bennée | 12e9700 | 2016-10-27 16:10:14 +0100 | [diff] [blame] | 1215 | handle_icount_deadline(); |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 1216 | |
KONRAD Frederic | d5f8d61 | 2015-08-10 17:27:06 +0200 | [diff] [blame] | 1217 | qemu_tcg_wait_io_event(QTAILQ_FIRST(&cpus)); |
Alex Bennée | c93bbbe | 2016-10-27 16:10:09 +0100 | [diff] [blame] | 1218 | deal_with_unplugged_cpus(); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1219 | } |
| 1220 | |
| 1221 | return NULL; |
| 1222 | } |
| 1223 | |
Andreas Färber | 2ff09a4 | 2012-05-03 00:23:30 +0200 | [diff] [blame] | 1224 | static void qemu_cpu_kick_thread(CPUState *cpu) |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 1225 | { |
| 1226 | #ifndef _WIN32 |
| 1227 | int err; |
| 1228 | |
Paolo Bonzini | e0c3821 | 2015-08-26 00:19:19 +0200 | [diff] [blame] | 1229 | if (cpu->thread_kicked) { |
| 1230 | return; |
Paolo Bonzini | 9102ded | 2015-08-18 06:52:09 -0700 | [diff] [blame] | 1231 | } |
Paolo Bonzini | e0c3821 | 2015-08-26 00:19:19 +0200 | [diff] [blame] | 1232 | cpu->thread_kicked = true; |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1233 | err = pthread_kill(cpu->thread->thread, SIG_IPI); |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 1234 | if (err) { |
| 1235 | fprintf(stderr, "qemu:%s: %s", __func__, strerror(err)); |
| 1236 | exit(1); |
| 1237 | } |
| 1238 | #else /* _WIN32 */ |
Paolo Bonzini | e0c3821 | 2015-08-26 00:19:19 +0200 | [diff] [blame] | 1239 | abort(); |
Paolo Bonzini | cc015e9 | 2011-03-12 17:44:08 +0100 | [diff] [blame] | 1240 | #endif |
| 1241 | } |
| 1242 | |
Paolo Bonzini | e0c3821 | 2015-08-26 00:19:19 +0200 | [diff] [blame] | 1243 | static void qemu_cpu_kick_no_halt(void) |
| 1244 | { |
| 1245 | CPUState *cpu; |
| 1246 | /* Ensure whatever caused the exit has reached the CPU threads before |
| 1247 | * writing exit_request. |
| 1248 | */ |
| 1249 | atomic_mb_set(&exit_request, 1); |
| 1250 | cpu = atomic_mb_read(&tcg_current_cpu); |
| 1251 | if (cpu) { |
| 1252 | cpu_exit(cpu); |
| 1253 | } |
| 1254 | } |
| 1255 | |
Andreas Färber | c08d742 | 2012-05-03 04:34:15 +0200 | [diff] [blame] | 1256 | void qemu_cpu_kick(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1257 | { |
Andreas Färber | f5c121b | 2012-05-03 01:22:49 +0200 | [diff] [blame] | 1258 | qemu_cond_broadcast(cpu->halt_cond); |
Paolo Bonzini | e0c3821 | 2015-08-26 00:19:19 +0200 | [diff] [blame] | 1259 | if (tcg_enabled()) { |
| 1260 | qemu_cpu_kick_no_halt(); |
| 1261 | } else { |
| 1262 | qemu_cpu_kick_thread(cpu); |
| 1263 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1264 | } |
| 1265 | |
Jan Kiszka | 46d62fa | 2011-02-01 22:15:59 +0100 | [diff] [blame] | 1266 | void qemu_cpu_kick_self(void) |
| 1267 | { |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 1268 | assert(current_cpu); |
Paolo Bonzini | 9102ded | 2015-08-18 06:52:09 -0700 | [diff] [blame] | 1269 | qemu_cpu_kick_thread(current_cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1270 | } |
| 1271 | |
Andreas Färber | 60e8257 | 2012-05-02 22:23:49 +0200 | [diff] [blame] | 1272 | bool qemu_cpu_is_self(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1273 | { |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1274 | return qemu_thread_is_self(cpu->thread); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1275 | } |
| 1276 | |
Paolo Bonzini | 79e2b9a | 2015-01-21 12:09:14 +0100 | [diff] [blame] | 1277 | bool qemu_in_vcpu_thread(void) |
Juan Quintela | aa723c2 | 2012-09-18 16:30:11 +0200 | [diff] [blame] | 1278 | { |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 1279 | return current_cpu && qemu_cpu_is_self(current_cpu); |
Juan Quintela | aa723c2 | 2012-09-18 16:30:11 +0200 | [diff] [blame] | 1280 | } |
| 1281 | |
Paolo Bonzini | afbe705 | 2015-06-18 18:47:19 +0200 | [diff] [blame] | 1282 | static __thread bool iothread_locked = false; |
| 1283 | |
| 1284 | bool qemu_mutex_iothread_locked(void) |
| 1285 | { |
| 1286 | return iothread_locked; |
| 1287 | } |
| 1288 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1289 | void qemu_mutex_lock_iothread(void) |
| 1290 | { |
Paolo Bonzini | 21618b3 | 2015-02-27 20:01:03 +0100 | [diff] [blame] | 1291 | atomic_inc(&iothread_requesting_mutex); |
Paolo Bonzini | 2e7f7a3 | 2015-06-18 18:47:18 +0200 | [diff] [blame] | 1292 | /* In the simple case there is no need to bump the VCPU thread out of |
| 1293 | * TCG code execution. |
| 1294 | */ |
| 1295 | if (!tcg_enabled() || qemu_in_vcpu_thread() || |
Aníbal Limón | 46036b2 | 2015-09-03 15:48:33 -0500 | [diff] [blame] | 1296 | !first_cpu || !first_cpu->created) { |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1297 | qemu_mutex_lock(&qemu_global_mutex); |
Paolo Bonzini | 21618b3 | 2015-02-27 20:01:03 +0100 | [diff] [blame] | 1298 | atomic_dec(&iothread_requesting_mutex); |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 1299 | } else { |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 1300 | if (qemu_mutex_trylock(&qemu_global_mutex)) { |
Paolo Bonzini | e0c3821 | 2015-08-26 00:19:19 +0200 | [diff] [blame] | 1301 | qemu_cpu_kick_no_halt(); |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 1302 | qemu_mutex_lock(&qemu_global_mutex); |
| 1303 | } |
Paolo Bonzini | 6b49809 | 2015-02-27 19:58:23 +0100 | [diff] [blame] | 1304 | atomic_dec(&iothread_requesting_mutex); |
Paolo Bonzini | 46daff1 | 2011-06-09 13:10:24 +0200 | [diff] [blame] | 1305 | qemu_cond_broadcast(&qemu_io_proceeded_cond); |
Marcelo Tosatti | 1a28cac | 2010-05-04 09:45:20 -0300 | [diff] [blame] | 1306 | } |
Paolo Bonzini | afbe705 | 2015-06-18 18:47:19 +0200 | [diff] [blame] | 1307 | iothread_locked = true; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1308 | } |
| 1309 | |
| 1310 | void qemu_mutex_unlock_iothread(void) |
| 1311 | { |
Paolo Bonzini | afbe705 | 2015-06-18 18:47:19 +0200 | [diff] [blame] | 1312 | iothread_locked = false; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1313 | qemu_mutex_unlock(&qemu_global_mutex); |
| 1314 | } |
| 1315 | |
Alex Bennée | e8faee0 | 2016-10-27 16:09:58 +0100 | [diff] [blame] | 1316 | static bool all_vcpus_paused(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1317 | { |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1318 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1319 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1320 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1321 | if (!cpu->stopped) { |
Alex Bennée | e8faee0 | 2016-10-27 16:09:58 +0100 | [diff] [blame] | 1322 | return false; |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1323 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1324 | } |
| 1325 | |
Alex Bennée | e8faee0 | 2016-10-27 16:09:58 +0100 | [diff] [blame] | 1326 | return true; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1327 | } |
| 1328 | |
| 1329 | void pause_all_vcpus(void) |
| 1330 | { |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1331 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1332 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 1333 | qemu_clock_enable(QEMU_CLOCK_VIRTUAL, false); |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1334 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1335 | cpu->stop = true; |
| 1336 | qemu_cpu_kick(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1337 | } |
| 1338 | |
Juan Quintela | aa723c2 | 2012-09-18 16:30:11 +0200 | [diff] [blame] | 1339 | if (qemu_in_vcpu_thread()) { |
Jan Kiszka | d798e97 | 2012-02-17 18:31:16 +0100 | [diff] [blame] | 1340 | cpu_stop_current(); |
| 1341 | if (!kvm_enabled()) { |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1342 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1343 | cpu->stop = false; |
| 1344 | cpu->stopped = true; |
Jan Kiszka | d798e97 | 2012-02-17 18:31:16 +0100 | [diff] [blame] | 1345 | } |
| 1346 | return; |
| 1347 | } |
| 1348 | } |
| 1349 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1350 | while (!all_vcpus_paused()) { |
Paolo Bonzini | be7d6c5 | 2011-03-12 17:44:02 +0100 | [diff] [blame] | 1351 | qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex); |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1352 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1353 | qemu_cpu_kick(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1354 | } |
| 1355 | } |
| 1356 | } |
| 1357 | |
Igor Mammedov | 2993683 | 2013-04-23 10:29:37 +0200 | [diff] [blame] | 1358 | void cpu_resume(CPUState *cpu) |
| 1359 | { |
| 1360 | cpu->stop = false; |
| 1361 | cpu->stopped = false; |
| 1362 | qemu_cpu_kick(cpu); |
| 1363 | } |
| 1364 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1365 | void resume_all_vcpus(void) |
| 1366 | { |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1367 | CPUState *cpu; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1368 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 1369 | qemu_clock_enable(QEMU_CLOCK_VIRTUAL, true); |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1370 | CPU_FOREACH(cpu) { |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1371 | cpu_resume(cpu); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1372 | } |
| 1373 | } |
| 1374 | |
Gu Zheng | 4c055ab | 2016-05-12 09:18:13 +0530 | [diff] [blame] | 1375 | void cpu_remove(CPUState *cpu) |
| 1376 | { |
| 1377 | cpu->stop = true; |
| 1378 | cpu->unplug = true; |
| 1379 | qemu_cpu_kick(cpu); |
| 1380 | } |
| 1381 | |
Bharata B Rao | 2c57904 | 2016-05-12 09:18:14 +0530 | [diff] [blame] | 1382 | void cpu_remove_sync(CPUState *cpu) |
| 1383 | { |
| 1384 | cpu_remove(cpu); |
| 1385 | while (cpu->created) { |
| 1386 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
| 1387 | } |
| 1388 | } |
| 1389 | |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1390 | /* For temporary buffers for forming a name */ |
| 1391 | #define VCPU_THREAD_NAME_SIZE 16 |
| 1392 | |
Andreas Färber | e5ab30a | 2012-05-03 01:50:44 +0200 | [diff] [blame] | 1393 | static void qemu_tcg_init_vcpu(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1394 | { |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1395 | char thread_name[VCPU_THREAD_NAME_SIZE]; |
KONRAD Frederic | d5f8d61 | 2015-08-10 17:27:06 +0200 | [diff] [blame] | 1396 | static QemuCond *tcg_halt_cond; |
| 1397 | static QemuThread *tcg_cpu_thread; |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1398 | |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1399 | /* share a single thread for all cpus with TCG */ |
| 1400 | if (!tcg_cpu_thread) { |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1401 | cpu->thread = g_malloc0(sizeof(QemuThread)); |
Andreas Färber | f5c121b | 2012-05-03 01:22:49 +0200 | [diff] [blame] | 1402 | cpu->halt_cond = g_malloc0(sizeof(QemuCond)); |
| 1403 | qemu_cond_init(cpu->halt_cond); |
| 1404 | tcg_halt_cond = cpu->halt_cond; |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1405 | snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/TCG", |
| 1406 | cpu->cpu_index); |
| 1407 | qemu_thread_create(cpu->thread, thread_name, qemu_tcg_cpu_thread_fn, |
| 1408 | cpu, QEMU_THREAD_JOINABLE); |
Paolo Bonzini | 1ecf47b | 2011-12-13 13:43:52 +0100 | [diff] [blame] | 1409 | #ifdef _WIN32 |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1410 | cpu->hThread = qemu_thread_get_handle(cpu->thread); |
Paolo Bonzini | 1ecf47b | 2011-12-13 13:43:52 +0100 | [diff] [blame] | 1411 | #endif |
Andreas Färber | 61a4621 | 2012-05-02 22:49:36 +0200 | [diff] [blame] | 1412 | while (!cpu->created) { |
Paolo Bonzini | 18a8572 | 2011-03-12 17:44:03 +0100 | [diff] [blame] | 1413 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1414 | } |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1415 | tcg_cpu_thread = cpu->thread; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1416 | } else { |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1417 | cpu->thread = tcg_cpu_thread; |
Andreas Färber | f5c121b | 2012-05-03 01:22:49 +0200 | [diff] [blame] | 1418 | cpu->halt_cond = tcg_halt_cond; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1419 | } |
| 1420 | } |
| 1421 | |
Andreas Färber | 48a106b | 2013-05-27 02:20:39 +0200 | [diff] [blame] | 1422 | static void qemu_kvm_start_vcpu(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1423 | { |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1424 | char thread_name[VCPU_THREAD_NAME_SIZE]; |
| 1425 | |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1426 | cpu->thread = g_malloc0(sizeof(QemuThread)); |
Andreas Färber | f5c121b | 2012-05-03 01:22:49 +0200 | [diff] [blame] | 1427 | cpu->halt_cond = g_malloc0(sizeof(QemuCond)); |
| 1428 | qemu_cond_init(cpu->halt_cond); |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1429 | snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/KVM", |
| 1430 | cpu->cpu_index); |
| 1431 | qemu_thread_create(cpu->thread, thread_name, qemu_kvm_cpu_thread_fn, |
| 1432 | cpu, QEMU_THREAD_JOINABLE); |
Andreas Färber | 61a4621 | 2012-05-02 22:49:36 +0200 | [diff] [blame] | 1433 | while (!cpu->created) { |
Paolo Bonzini | 18a8572 | 2011-03-12 17:44:03 +0100 | [diff] [blame] | 1434 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1435 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1436 | } |
| 1437 | |
Andreas Färber | 10a9021 | 2013-05-27 02:24:35 +0200 | [diff] [blame] | 1438 | static void qemu_dummy_start_vcpu(CPUState *cpu) |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1439 | { |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1440 | char thread_name[VCPU_THREAD_NAME_SIZE]; |
| 1441 | |
Andreas Färber | 814e612 | 2012-05-02 17:00:37 +0200 | [diff] [blame] | 1442 | cpu->thread = g_malloc0(sizeof(QemuThread)); |
Andreas Färber | f5c121b | 2012-05-03 01:22:49 +0200 | [diff] [blame] | 1443 | cpu->halt_cond = g_malloc0(sizeof(QemuCond)); |
| 1444 | qemu_cond_init(cpu->halt_cond); |
Dr. David Alan Gilbert | 4900116 | 2014-01-30 10:20:32 +0000 | [diff] [blame] | 1445 | snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/DUMMY", |
| 1446 | cpu->cpu_index); |
| 1447 | 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] | 1448 | QEMU_THREAD_JOINABLE); |
Andreas Färber | 61a4621 | 2012-05-02 22:49:36 +0200 | [diff] [blame] | 1449 | while (!cpu->created) { |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1450 | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
| 1451 | } |
| 1452 | } |
| 1453 | |
Andreas Färber | c643bed | 2013-05-27 03:23:24 +0200 | [diff] [blame] | 1454 | void qemu_init_vcpu(CPUState *cpu) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1455 | { |
Andreas Färber | ce3960e | 2012-12-17 03:27:07 +0100 | [diff] [blame] | 1456 | cpu->nr_cores = smp_cores; |
| 1457 | cpu->nr_threads = smp_threads; |
Andreas Färber | f324e76 | 2012-05-02 23:26:21 +0200 | [diff] [blame] | 1458 | cpu->stopped = true; |
Peter Maydell | 56943e8 | 2016-01-21 14:15:04 +0000 | [diff] [blame] | 1459 | |
| 1460 | if (!cpu->as) { |
| 1461 | /* If the target cpu hasn't set up any address spaces itself, |
| 1462 | * give it the default one. |
| 1463 | */ |
Peter Crosthwaite | 6731d86 | 2016-01-21 14:15:06 +0000 | [diff] [blame] | 1464 | AddressSpace *as = address_space_init_shareable(cpu->memory, |
| 1465 | "cpu-memory"); |
Peter Maydell | 12ebc9a | 2016-01-21 14:15:04 +0000 | [diff] [blame] | 1466 | cpu->num_ases = 1; |
Peter Crosthwaite | 6731d86 | 2016-01-21 14:15:06 +0000 | [diff] [blame] | 1467 | cpu_address_space_init(cpu, as, 0); |
Peter Maydell | 56943e8 | 2016-01-21 14:15:04 +0000 | [diff] [blame] | 1468 | } |
| 1469 | |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1470 | if (kvm_enabled()) { |
Andreas Färber | 48a106b | 2013-05-27 02:20:39 +0200 | [diff] [blame] | 1471 | qemu_kvm_start_vcpu(cpu); |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1472 | } else if (tcg_enabled()) { |
Andreas Färber | e5ab30a | 2012-05-03 01:50:44 +0200 | [diff] [blame] | 1473 | qemu_tcg_init_vcpu(cpu); |
Anthony Liguori | c7f0f3b | 2012-03-28 15:42:02 +0200 | [diff] [blame] | 1474 | } else { |
Andreas Färber | 10a9021 | 2013-05-27 02:24:35 +0200 | [diff] [blame] | 1475 | qemu_dummy_start_vcpu(cpu); |
Jan Kiszka | 0ab07c6 | 2011-02-07 12:19:14 +0100 | [diff] [blame] | 1476 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1477 | } |
| 1478 | |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1479 | void cpu_stop_current(void) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1480 | { |
Andreas Färber | 4917cf4 | 2013-05-27 05:17:50 +0200 | [diff] [blame] | 1481 | if (current_cpu) { |
| 1482 | current_cpu->stop = false; |
| 1483 | current_cpu->stopped = true; |
| 1484 | cpu_exit(current_cpu); |
Dr. David Alan Gilbert | 96bce68 | 2016-01-25 10:08:18 +0000 | [diff] [blame] | 1485 | qemu_cond_broadcast(&qemu_pause_cond); |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1486 | } |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1487 | } |
| 1488 | |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 1489 | int vm_stop(RunState state) |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1490 | { |
Juan Quintela | aa723c2 | 2012-09-18 16:30:11 +0200 | [diff] [blame] | 1491 | if (qemu_in_vcpu_thread()) { |
Paolo Bonzini | 74892d2 | 2014-06-05 14:53:58 +0200 | [diff] [blame] | 1492 | qemu_system_vmstop_request_prepare(); |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 1493 | qemu_system_vmstop_request(state); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1494 | /* |
| 1495 | * FIXME: should not return to device code in case |
| 1496 | * vm_stop() has been requested. |
| 1497 | */ |
Jan Kiszka | b4a3d96 | 2011-02-01 22:15:43 +0100 | [diff] [blame] | 1498 | cpu_stop_current(); |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 1499 | return 0; |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1500 | } |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 1501 | |
| 1502 | return do_vm_stop(state); |
Blue Swirl | 296af7c | 2010-03-29 19:23:50 +0000 | [diff] [blame] | 1503 | } |
| 1504 | |
Luiz Capitulino | 8a9236f | 2011-10-14 11:18:09 -0300 | [diff] [blame] | 1505 | /* does a state transition even if the VM is already stopped, |
| 1506 | current state is forgotten forever */ |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 1507 | int vm_stop_force_state(RunState state) |
Luiz Capitulino | 8a9236f | 2011-10-14 11:18:09 -0300 | [diff] [blame] | 1508 | { |
| 1509 | if (runstate_is_running()) { |
Kevin Wolf | 5698346 | 2013-07-05 13:49:54 +0200 | [diff] [blame] | 1510 | return vm_stop(state); |
Luiz Capitulino | 8a9236f | 2011-10-14 11:18:09 -0300 | [diff] [blame] | 1511 | } else { |
| 1512 | runstate_set(state); |
Wen Congyang | b2780d3 | 2015-11-20 17:34:38 +0800 | [diff] [blame] | 1513 | |
| 1514 | bdrv_drain_all(); |
Kevin Wolf | 594a45c | 2013-07-18 14:52:19 +0200 | [diff] [blame] | 1515 | /* Make sure to return an error if the flush in a previous vm_stop() |
| 1516 | * failed. */ |
John Snow | 22af08e | 2016-09-22 21:45:51 -0400 | [diff] [blame] | 1517 | return bdrv_flush_all(); |
Luiz Capitulino | 8a9236f | 2011-10-14 11:18:09 -0300 | [diff] [blame] | 1518 | } |
| 1519 | } |
| 1520 | |
Stefan Weil | 9a78eea | 2010-10-22 23:03:33 +0200 | [diff] [blame] | 1521 | void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg) |
Blue Swirl | 262353c | 2010-05-04 19:55:35 +0000 | [diff] [blame] | 1522 | { |
| 1523 | /* XXX: implement xxx_cpu_list for targets that still miss it */ |
Peter Maydell | e916cbf | 2012-09-05 17:41:08 -0300 | [diff] [blame] | 1524 | #if defined(cpu_list) |
| 1525 | cpu_list(f, cpu_fprintf); |
Blue Swirl | 262353c | 2010-05-04 19:55:35 +0000 | [diff] [blame] | 1526 | #endif |
| 1527 | } |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1528 | |
| 1529 | CpuInfoList *qmp_query_cpus(Error **errp) |
| 1530 | { |
| 1531 | CpuInfoList *head = NULL, *cur_item = NULL; |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1532 | CPUState *cpu; |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1533 | |
Andreas Färber | bdc4464 | 2013-06-24 23:50:24 +0200 | [diff] [blame] | 1534 | CPU_FOREACH(cpu) { |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1535 | CpuInfoList *info; |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1536 | #if defined(TARGET_I386) |
| 1537 | X86CPU *x86_cpu = X86_CPU(cpu); |
| 1538 | CPUX86State *env = &x86_cpu->env; |
| 1539 | #elif defined(TARGET_PPC) |
| 1540 | PowerPCCPU *ppc_cpu = POWERPC_CPU(cpu); |
| 1541 | CPUPPCState *env = &ppc_cpu->env; |
| 1542 | #elif defined(TARGET_SPARC) |
| 1543 | SPARCCPU *sparc_cpu = SPARC_CPU(cpu); |
| 1544 | CPUSPARCState *env = &sparc_cpu->env; |
| 1545 | #elif defined(TARGET_MIPS) |
| 1546 | MIPSCPU *mips_cpu = MIPS_CPU(cpu); |
| 1547 | CPUMIPSState *env = &mips_cpu->env; |
Bastian Koppelmann | 48e06fe | 2014-09-01 12:59:46 +0100 | [diff] [blame] | 1548 | #elif defined(TARGET_TRICORE) |
| 1549 | TriCoreCPU *tricore_cpu = TRICORE_CPU(cpu); |
| 1550 | CPUTriCoreState *env = &tricore_cpu->env; |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1551 | #endif |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1552 | |
Andreas Färber | cb446ec | 2013-05-01 14:24:52 +0200 | [diff] [blame] | 1553 | cpu_synchronize_state(cpu); |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1554 | |
| 1555 | info = g_malloc0(sizeof(*info)); |
| 1556 | info->value = g_malloc0(sizeof(*info->value)); |
Andreas Färber | 55e5c28 | 2012-12-17 06:18:02 +0100 | [diff] [blame] | 1557 | info->value->CPU = cpu->cpu_index; |
Andreas Färber | 182735e | 2013-05-29 22:29:20 +0200 | [diff] [blame] | 1558 | info->value->current = (cpu == first_cpu); |
Andreas Färber | 259186a | 2013-01-17 18:51:17 +0100 | [diff] [blame] | 1559 | info->value->halted = cpu->halted; |
Eduardo Habkost | 58f88d4 | 2015-05-08 16:04:22 -0300 | [diff] [blame] | 1560 | info->value->qom_path = object_get_canonical_path(OBJECT(cpu)); |
Andreas Färber | 9f09e18 | 2012-05-03 06:59:07 +0200 | [diff] [blame] | 1561 | info->value->thread_id = cpu->thread_id; |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1562 | #if defined(TARGET_I386) |
Eric Blake | 86f4b68 | 2015-11-18 01:52:59 -0700 | [diff] [blame] | 1563 | info->value->arch = CPU_INFO_ARCH_X86; |
Eric Blake | 544a373 | 2016-02-17 23:48:27 -0700 | [diff] [blame] | 1564 | info->value->u.x86.pc = env->eip + env->segs[R_CS].base; |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1565 | #elif defined(TARGET_PPC) |
Eric Blake | 86f4b68 | 2015-11-18 01:52:59 -0700 | [diff] [blame] | 1566 | info->value->arch = CPU_INFO_ARCH_PPC; |
Eric Blake | 544a373 | 2016-02-17 23:48:27 -0700 | [diff] [blame] | 1567 | info->value->u.ppc.nip = env->nip; |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1568 | #elif defined(TARGET_SPARC) |
Eric Blake | 86f4b68 | 2015-11-18 01:52:59 -0700 | [diff] [blame] | 1569 | info->value->arch = CPU_INFO_ARCH_SPARC; |
Eric Blake | 544a373 | 2016-02-17 23:48:27 -0700 | [diff] [blame] | 1570 | info->value->u.q_sparc.pc = env->pc; |
| 1571 | info->value->u.q_sparc.npc = env->npc; |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1572 | #elif defined(TARGET_MIPS) |
Eric Blake | 86f4b68 | 2015-11-18 01:52:59 -0700 | [diff] [blame] | 1573 | info->value->arch = CPU_INFO_ARCH_MIPS; |
Eric Blake | 544a373 | 2016-02-17 23:48:27 -0700 | [diff] [blame] | 1574 | info->value->u.q_mips.PC = env->active_tc.PC; |
Bastian Koppelmann | 48e06fe | 2014-09-01 12:59:46 +0100 | [diff] [blame] | 1575 | #elif defined(TARGET_TRICORE) |
Eric Blake | 86f4b68 | 2015-11-18 01:52:59 -0700 | [diff] [blame] | 1576 | info->value->arch = CPU_INFO_ARCH_TRICORE; |
Eric Blake | 544a373 | 2016-02-17 23:48:27 -0700 | [diff] [blame] | 1577 | info->value->u.tricore.PC = env->PC; |
Eric Blake | 86f4b68 | 2015-11-18 01:52:59 -0700 | [diff] [blame] | 1578 | #else |
| 1579 | info->value->arch = CPU_INFO_ARCH_OTHER; |
Luiz Capitulino | de0b36b | 2011-09-21 16:38:35 -0300 | [diff] [blame] | 1580 | #endif |
| 1581 | |
| 1582 | /* XXX: waiting for the qapi to support GSList */ |
| 1583 | if (!cur_item) { |
| 1584 | head = cur_item = info; |
| 1585 | } else { |
| 1586 | cur_item->next = info; |
| 1587 | cur_item = info; |
| 1588 | } |
| 1589 | } |
| 1590 | |
| 1591 | return head; |
| 1592 | } |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1593 | |
| 1594 | void qmp_memsave(int64_t addr, int64_t size, const char *filename, |
| 1595 | bool has_cpu, int64_t cpu_index, Error **errp) |
| 1596 | { |
| 1597 | FILE *f; |
| 1598 | uint32_t l; |
Andreas Färber | 55e5c28 | 2012-12-17 06:18:02 +0100 | [diff] [blame] | 1599 | CPUState *cpu; |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1600 | uint8_t buf[1024]; |
Borislav Petkov | 0dc9daf | 2015-02-08 13:14:38 +0100 | [diff] [blame] | 1601 | int64_t orig_addr = addr, orig_size = size; |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1602 | |
| 1603 | if (!has_cpu) { |
| 1604 | cpu_index = 0; |
| 1605 | } |
| 1606 | |
Andreas Färber | 151d132 | 2013-02-15 15:41:49 +0100 | [diff] [blame] | 1607 | cpu = qemu_get_cpu(cpu_index); |
| 1608 | if (cpu == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1609 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index", |
| 1610 | "a CPU number"); |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1611 | return; |
| 1612 | } |
| 1613 | |
| 1614 | f = fopen(filename, "wb"); |
| 1615 | if (!f) { |
Luiz Capitulino | 618da85 | 2013-06-07 14:35:06 -0400 | [diff] [blame] | 1616 | error_setg_file_open(errp, errno, filename); |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1617 | return; |
| 1618 | } |
| 1619 | |
| 1620 | while (size != 0) { |
| 1621 | l = sizeof(buf); |
| 1622 | if (l > size) |
| 1623 | l = size; |
Aneesh Kumar K.V | 2f4d0f5 | 2013-10-01 21:49:30 +0530 | [diff] [blame] | 1624 | if (cpu_memory_rw_debug(cpu, addr, buf, l, 0) != 0) { |
Borislav Petkov | 0dc9daf | 2015-02-08 13:14:38 +0100 | [diff] [blame] | 1625 | error_setg(errp, "Invalid addr 0x%016" PRIx64 "/size %" PRId64 |
| 1626 | " specified", orig_addr, orig_size); |
Aneesh Kumar K.V | 2f4d0f5 | 2013-10-01 21:49:30 +0530 | [diff] [blame] | 1627 | goto exit; |
| 1628 | } |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1629 | if (fwrite(buf, 1, l, f) != l) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1630 | error_setg(errp, QERR_IO_ERROR); |
Luiz Capitulino | 0cfd6a9 | 2011-11-22 16:32:37 -0200 | [diff] [blame] | 1631 | goto exit; |
| 1632 | } |
| 1633 | addr += l; |
| 1634 | size -= l; |
| 1635 | } |
| 1636 | |
| 1637 | exit: |
| 1638 | fclose(f); |
| 1639 | } |
Luiz Capitulino | 6d3962b | 2011-11-22 17:26:46 -0200 | [diff] [blame] | 1640 | |
| 1641 | void qmp_pmemsave(int64_t addr, int64_t size, const char *filename, |
| 1642 | Error **errp) |
| 1643 | { |
| 1644 | FILE *f; |
| 1645 | uint32_t l; |
| 1646 | uint8_t buf[1024]; |
| 1647 | |
| 1648 | f = fopen(filename, "wb"); |
| 1649 | if (!f) { |
Luiz Capitulino | 618da85 | 2013-06-07 14:35:06 -0400 | [diff] [blame] | 1650 | error_setg_file_open(errp, errno, filename); |
Luiz Capitulino | 6d3962b | 2011-11-22 17:26:46 -0200 | [diff] [blame] | 1651 | return; |
| 1652 | } |
| 1653 | |
| 1654 | while (size != 0) { |
| 1655 | l = sizeof(buf); |
| 1656 | if (l > size) |
| 1657 | l = size; |
Stefan Weil | eb6282f | 2014-04-07 20:28:23 +0200 | [diff] [blame] | 1658 | cpu_physical_memory_read(addr, buf, l); |
Luiz Capitulino | 6d3962b | 2011-11-22 17:26:46 -0200 | [diff] [blame] | 1659 | if (fwrite(buf, 1, l, f) != l) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1660 | error_setg(errp, QERR_IO_ERROR); |
Luiz Capitulino | 6d3962b | 2011-11-22 17:26:46 -0200 | [diff] [blame] | 1661 | goto exit; |
| 1662 | } |
| 1663 | addr += l; |
| 1664 | size -= l; |
| 1665 | } |
| 1666 | |
| 1667 | exit: |
| 1668 | fclose(f); |
| 1669 | } |
Luiz Capitulino | ab49ab5 | 2011-11-23 12:55:53 -0200 | [diff] [blame] | 1670 | |
| 1671 | void qmp_inject_nmi(Error **errp) |
| 1672 | { |
Alexey Kardashevskiy | 9cb805f | 2014-08-20 22:16:33 +1000 | [diff] [blame] | 1673 | nmi_monitor_handle(monitor_get_cpu_index(), errp); |
Luiz Capitulino | ab49ab5 | 2011-11-23 12:55:53 -0200 | [diff] [blame] | 1674 | } |
Sebastian Tanase | 27498be | 2014-07-25 11:56:33 +0200 | [diff] [blame] | 1675 | |
| 1676 | void dump_drift_info(FILE *f, fprintf_function cpu_fprintf) |
| 1677 | { |
| 1678 | if (!use_icount) { |
| 1679 | return; |
| 1680 | } |
| 1681 | |
| 1682 | cpu_fprintf(f, "Host - Guest clock %"PRIi64" ms\n", |
| 1683 | (cpu_get_clock() - cpu_get_icount())/SCALE_MS); |
| 1684 | if (icount_align_option) { |
| 1685 | cpu_fprintf(f, "Max guest delay %"PRIi64" ms\n", -max_delay/SCALE_MS); |
| 1686 | cpu_fprintf(f, "Max guest advance %"PRIi64" ms\n", max_advance/SCALE_MS); |
| 1687 | } else { |
| 1688 | cpu_fprintf(f, "Max guest delay NA\n"); |
| 1689 | cpu_fprintf(f, "Max guest advance NA\n"); |
| 1690 | } |
| 1691 | } |