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1 | 296af7c9 | Blue Swirl | /*
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2 | 296af7c9 | Blue Swirl | * QEMU System Emulator
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3 | 296af7c9 | Blue Swirl | *
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4 | 296af7c9 | Blue Swirl | * Copyright (c) 2003-2008 Fabrice Bellard
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5 | 296af7c9 | Blue Swirl | *
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6 | 296af7c9 | Blue Swirl | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 296af7c9 | Blue Swirl | * of this software and associated documentation files (the "Software"), to deal
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8 | 296af7c9 | Blue Swirl | * in the Software without restriction, including without limitation the rights
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9 | 296af7c9 | Blue Swirl | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 296af7c9 | Blue Swirl | * copies of the Software, and to permit persons to whom the Software is
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11 | 296af7c9 | Blue Swirl | * furnished to do so, subject to the following conditions:
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12 | 296af7c9 | Blue Swirl | *
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13 | 296af7c9 | Blue Swirl | * The above copyright notice and this permission notice shall be included in
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14 | 296af7c9 | Blue Swirl | * all copies or substantial portions of the Software.
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15 | 296af7c9 | Blue Swirl | *
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16 | 296af7c9 | Blue Swirl | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 296af7c9 | Blue Swirl | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 296af7c9 | Blue Swirl | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 296af7c9 | Blue Swirl | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 296af7c9 | Blue Swirl | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 296af7c9 | Blue Swirl | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 296af7c9 | Blue Swirl | * THE SOFTWARE.
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23 | 296af7c9 | Blue Swirl | */
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24 | 296af7c9 | Blue Swirl | |
25 | 296af7c9 | Blue Swirl | /* Needed early for CONFIG_BSD etc. */
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26 | 296af7c9 | Blue Swirl | #include "config-host.h" |
27 | 296af7c9 | Blue Swirl | |
28 | 83c9089e | Paolo Bonzini | #include "monitor/monitor.h" |
29 | 9c17d615 | Paolo Bonzini | #include "sysemu/sysemu.h" |
30 | 022c62cb | Paolo Bonzini | #include "exec/gdbstub.h" |
31 | 9c17d615 | Paolo Bonzini | #include "sysemu/dma.h" |
32 | 9c17d615 | Paolo Bonzini | #include "sysemu/kvm.h" |
33 | de0b36b6 | Luiz Capitulino | #include "qmp-commands.h" |
34 | 296af7c9 | Blue Swirl | |
35 | 1de7afc9 | Paolo Bonzini | #include "qemu/thread.h" |
36 | 9c17d615 | Paolo Bonzini | #include "sysemu/cpus.h" |
37 | 9c17d615 | Paolo Bonzini | #include "sysemu/qtest.h" |
38 | 1de7afc9 | Paolo Bonzini | #include "qemu/main-loop.h" |
39 | 1de7afc9 | Paolo Bonzini | #include "qemu/bitmap.h" |
40 | 0ff0fc19 | Jan Kiszka | |
41 | 0ff0fc19 | Jan Kiszka | #ifndef _WIN32
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42 | 1de7afc9 | Paolo Bonzini | #include "qemu/compatfd.h" |
43 | 0ff0fc19 | Jan Kiszka | #endif
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44 | 296af7c9 | Blue Swirl | |
45 | 6d9cb73c | Jan Kiszka | #ifdef CONFIG_LINUX
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46 | 6d9cb73c | Jan Kiszka | |
47 | 6d9cb73c | Jan Kiszka | #include <sys/prctl.h> |
48 | 6d9cb73c | Jan Kiszka | |
49 | c0532a76 | Marcelo Tosatti | #ifndef PR_MCE_KILL
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50 | c0532a76 | Marcelo Tosatti | #define PR_MCE_KILL 33 |
51 | c0532a76 | Marcelo Tosatti | #endif
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52 | c0532a76 | Marcelo Tosatti | |
53 | 6d9cb73c | Jan Kiszka | #ifndef PR_MCE_KILL_SET
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54 | 6d9cb73c | Jan Kiszka | #define PR_MCE_KILL_SET 1 |
55 | 6d9cb73c | Jan Kiszka | #endif
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56 | 6d9cb73c | Jan Kiszka | |
57 | 6d9cb73c | Jan Kiszka | #ifndef PR_MCE_KILL_EARLY
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58 | 6d9cb73c | Jan Kiszka | #define PR_MCE_KILL_EARLY 1 |
59 | 6d9cb73c | Jan Kiszka | #endif
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60 | 6d9cb73c | Jan Kiszka | |
61 | 6d9cb73c | Jan Kiszka | #endif /* CONFIG_LINUX */ |
62 | 6d9cb73c | Jan Kiszka | |
63 | 182735ef | Andreas Färber | static CPUState *next_cpu;
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64 | 296af7c9 | Blue Swirl | |
65 | 321bc0b2 | Tiejun Chen | bool cpu_is_stopped(CPUState *cpu)
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66 | 321bc0b2 | Tiejun Chen | { |
67 | 321bc0b2 | Tiejun Chen | return cpu->stopped || !runstate_is_running();
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68 | 321bc0b2 | Tiejun Chen | } |
69 | 321bc0b2 | Tiejun Chen | |
70 | a98ae1d8 | Andreas Färber | static bool cpu_thread_is_idle(CPUState *cpu) |
71 | ac873f1e | Peter Maydell | { |
72 | c64ca814 | Andreas Färber | if (cpu->stop || cpu->queued_work_first) {
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73 | ac873f1e | Peter Maydell | return false; |
74 | ac873f1e | Peter Maydell | } |
75 | 321bc0b2 | Tiejun Chen | if (cpu_is_stopped(cpu)) {
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76 | ac873f1e | Peter Maydell | return true; |
77 | ac873f1e | Peter Maydell | } |
78 | 259186a7 | Andreas Färber | if (!cpu->halted || qemu_cpu_has_work(cpu) ||
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79 | 215e79c0 | Alexander Graf | kvm_halt_in_kernel()) { |
80 | ac873f1e | Peter Maydell | return false; |
81 | ac873f1e | Peter Maydell | } |
82 | ac873f1e | Peter Maydell | return true; |
83 | ac873f1e | Peter Maydell | } |
84 | ac873f1e | Peter Maydell | |
85 | ac873f1e | Peter Maydell | static bool all_cpu_threads_idle(void) |
86 | ac873f1e | Peter Maydell | { |
87 | 182735ef | Andreas Färber | CPUState *cpu; |
88 | ac873f1e | Peter Maydell | |
89 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
90 | 182735ef | Andreas Färber | if (!cpu_thread_is_idle(cpu)) {
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91 | ac873f1e | Peter Maydell | return false; |
92 | ac873f1e | Peter Maydell | } |
93 | ac873f1e | Peter Maydell | } |
94 | ac873f1e | Peter Maydell | return true; |
95 | ac873f1e | Peter Maydell | } |
96 | ac873f1e | Peter Maydell | |
97 | 296af7c9 | Blue Swirl | /***********************************************************/
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98 | 946fb27c | Paolo Bonzini | /* guest cycle counter */
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99 | 946fb27c | Paolo Bonzini | |
100 | 946fb27c | Paolo Bonzini | /* Conversion factor from emulated instructions to virtual clock ticks. */
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101 | 946fb27c | Paolo Bonzini | static int icount_time_shift; |
102 | 946fb27c | Paolo Bonzini | /* Arbitrarily pick 1MIPS as the minimum allowable speed. */
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103 | 946fb27c | Paolo Bonzini | #define MAX_ICOUNT_SHIFT 10 |
104 | 946fb27c | Paolo Bonzini | /* Compensate for varying guest execution speed. */
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105 | 946fb27c | Paolo Bonzini | static int64_t qemu_icount_bias;
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106 | 946fb27c | Paolo Bonzini | static QEMUTimer *icount_rt_timer;
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107 | 946fb27c | Paolo Bonzini | static QEMUTimer *icount_vm_timer;
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108 | 946fb27c | Paolo Bonzini | static QEMUTimer *icount_warp_timer;
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109 | 946fb27c | Paolo Bonzini | static int64_t vm_clock_warp_start;
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110 | 946fb27c | Paolo Bonzini | static int64_t qemu_icount;
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111 | 946fb27c | Paolo Bonzini | |
112 | 946fb27c | Paolo Bonzini | typedef struct TimersState { |
113 | 946fb27c | Paolo Bonzini | int64_t cpu_ticks_prev; |
114 | 946fb27c | Paolo Bonzini | int64_t cpu_ticks_offset; |
115 | 946fb27c | Paolo Bonzini | int64_t cpu_clock_offset; |
116 | 946fb27c | Paolo Bonzini | int32_t cpu_ticks_enabled; |
117 | 946fb27c | Paolo Bonzini | int64_t dummy; |
118 | 946fb27c | Paolo Bonzini | } TimersState; |
119 | 946fb27c | Paolo Bonzini | |
120 | d9cd4007 | Liu Ping Fan | static TimersState timers_state;
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121 | 946fb27c | Paolo Bonzini | |
122 | 946fb27c | Paolo Bonzini | /* Return the virtual CPU time, based on the instruction counter. */
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123 | 946fb27c | Paolo Bonzini | int64_t cpu_get_icount(void)
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124 | 946fb27c | Paolo Bonzini | { |
125 | 946fb27c | Paolo Bonzini | int64_t icount; |
126 | 4917cf44 | Andreas Färber | CPUState *cpu = current_cpu; |
127 | 946fb27c | Paolo Bonzini | |
128 | 946fb27c | Paolo Bonzini | icount = qemu_icount; |
129 | 4917cf44 | Andreas Färber | if (cpu) {
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130 | 4917cf44 | Andreas Färber | CPUArchState *env = cpu->env_ptr; |
131 | 946fb27c | Paolo Bonzini | if (!can_do_io(env)) {
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132 | 946fb27c | Paolo Bonzini | fprintf(stderr, "Bad clock read\n");
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133 | 946fb27c | Paolo Bonzini | } |
134 | 946fb27c | Paolo Bonzini | icount -= (env->icount_decr.u16.low + env->icount_extra); |
135 | 946fb27c | Paolo Bonzini | } |
136 | 946fb27c | Paolo Bonzini | return qemu_icount_bias + (icount << icount_time_shift);
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137 | 946fb27c | Paolo Bonzini | } |
138 | 946fb27c | Paolo Bonzini | |
139 | 946fb27c | Paolo Bonzini | /* return the host CPU cycle counter and handle stop/restart */
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140 | 946fb27c | Paolo Bonzini | int64_t cpu_get_ticks(void)
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141 | 946fb27c | Paolo Bonzini | { |
142 | 946fb27c | Paolo Bonzini | if (use_icount) {
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143 | 946fb27c | Paolo Bonzini | return cpu_get_icount();
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144 | 946fb27c | Paolo Bonzini | } |
145 | 946fb27c | Paolo Bonzini | if (!timers_state.cpu_ticks_enabled) {
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146 | 946fb27c | Paolo Bonzini | return timers_state.cpu_ticks_offset;
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147 | 946fb27c | Paolo Bonzini | } else {
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148 | 946fb27c | Paolo Bonzini | int64_t ticks; |
149 | 946fb27c | Paolo Bonzini | ticks = cpu_get_real_ticks(); |
150 | 946fb27c | Paolo Bonzini | if (timers_state.cpu_ticks_prev > ticks) {
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151 | 946fb27c | Paolo Bonzini | /* Note: non increasing ticks may happen if the host uses
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152 | 946fb27c | Paolo Bonzini | software suspend */
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153 | 946fb27c | Paolo Bonzini | timers_state.cpu_ticks_offset += timers_state.cpu_ticks_prev - ticks; |
154 | 946fb27c | Paolo Bonzini | } |
155 | 946fb27c | Paolo Bonzini | timers_state.cpu_ticks_prev = ticks; |
156 | 946fb27c | Paolo Bonzini | return ticks + timers_state.cpu_ticks_offset;
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157 | 946fb27c | Paolo Bonzini | } |
158 | 946fb27c | Paolo Bonzini | } |
159 | 946fb27c | Paolo Bonzini | |
160 | 946fb27c | Paolo Bonzini | /* return the host CPU monotonic timer and handle stop/restart */
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161 | 946fb27c | Paolo Bonzini | int64_t cpu_get_clock(void)
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162 | 946fb27c | Paolo Bonzini | { |
163 | 946fb27c | Paolo Bonzini | int64_t ti; |
164 | 946fb27c | Paolo Bonzini | if (!timers_state.cpu_ticks_enabled) {
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165 | 946fb27c | Paolo Bonzini | return timers_state.cpu_clock_offset;
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166 | 946fb27c | Paolo Bonzini | } else {
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167 | 946fb27c | Paolo Bonzini | ti = get_clock(); |
168 | 946fb27c | Paolo Bonzini | return ti + timers_state.cpu_clock_offset;
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169 | 946fb27c | Paolo Bonzini | } |
170 | 946fb27c | Paolo Bonzini | } |
171 | 946fb27c | Paolo Bonzini | |
172 | 946fb27c | Paolo Bonzini | /* enable cpu_get_ticks() */
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173 | 946fb27c | Paolo Bonzini | void cpu_enable_ticks(void) |
174 | 946fb27c | Paolo Bonzini | { |
175 | 946fb27c | Paolo Bonzini | if (!timers_state.cpu_ticks_enabled) {
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176 | 946fb27c | Paolo Bonzini | timers_state.cpu_ticks_offset -= cpu_get_real_ticks(); |
177 | 946fb27c | Paolo Bonzini | timers_state.cpu_clock_offset -= get_clock(); |
178 | 946fb27c | Paolo Bonzini | timers_state.cpu_ticks_enabled = 1;
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179 | 946fb27c | Paolo Bonzini | } |
180 | 946fb27c | Paolo Bonzini | } |
181 | 946fb27c | Paolo Bonzini | |
182 | 946fb27c | Paolo Bonzini | /* disable cpu_get_ticks() : the clock is stopped. You must not call
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183 | 946fb27c | Paolo Bonzini | cpu_get_ticks() after that. */
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184 | 946fb27c | Paolo Bonzini | void cpu_disable_ticks(void) |
185 | 946fb27c | Paolo Bonzini | { |
186 | 946fb27c | Paolo Bonzini | if (timers_state.cpu_ticks_enabled) {
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187 | 946fb27c | Paolo Bonzini | timers_state.cpu_ticks_offset = cpu_get_ticks(); |
188 | 946fb27c | Paolo Bonzini | timers_state.cpu_clock_offset = cpu_get_clock(); |
189 | 946fb27c | Paolo Bonzini | timers_state.cpu_ticks_enabled = 0;
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190 | 946fb27c | Paolo Bonzini | } |
191 | 946fb27c | Paolo Bonzini | } |
192 | 946fb27c | Paolo Bonzini | |
193 | 946fb27c | Paolo Bonzini | /* Correlation between real and virtual time is always going to be
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194 | 946fb27c | Paolo Bonzini | fairly approximate, so ignore small variation.
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195 | 946fb27c | Paolo Bonzini | When the guest is idle real and virtual time will be aligned in
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196 | 946fb27c | Paolo Bonzini | the IO wait loop. */
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197 | 946fb27c | Paolo Bonzini | #define ICOUNT_WOBBLE (get_ticks_per_sec() / 10) |
198 | 946fb27c | Paolo Bonzini | |
199 | 946fb27c | Paolo Bonzini | static void icount_adjust(void) |
200 | 946fb27c | Paolo Bonzini | { |
201 | 946fb27c | Paolo Bonzini | int64_t cur_time; |
202 | 946fb27c | Paolo Bonzini | int64_t cur_icount; |
203 | 946fb27c | Paolo Bonzini | int64_t delta; |
204 | 946fb27c | Paolo Bonzini | static int64_t last_delta;
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205 | 946fb27c | Paolo Bonzini | /* If the VM is not running, then do nothing. */
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206 | 946fb27c | Paolo Bonzini | if (!runstate_is_running()) {
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207 | 946fb27c | Paolo Bonzini | return;
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208 | 946fb27c | Paolo Bonzini | } |
209 | 946fb27c | Paolo Bonzini | cur_time = cpu_get_clock(); |
210 | 40daca54 | Alex Bligh | cur_icount = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
211 | 946fb27c | Paolo Bonzini | delta = cur_icount - cur_time; |
212 | 946fb27c | Paolo Bonzini | /* FIXME: This is a very crude algorithm, somewhat prone to oscillation. */
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213 | 946fb27c | Paolo Bonzini | if (delta > 0 |
214 | 946fb27c | Paolo Bonzini | && last_delta + ICOUNT_WOBBLE < delta * 2
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215 | 946fb27c | Paolo Bonzini | && icount_time_shift > 0) {
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216 | 946fb27c | Paolo Bonzini | /* The guest is getting too far ahead. Slow time down. */
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217 | 946fb27c | Paolo Bonzini | icount_time_shift--; |
218 | 946fb27c | Paolo Bonzini | } |
219 | 946fb27c | Paolo Bonzini | if (delta < 0 |
220 | 946fb27c | Paolo Bonzini | && last_delta - ICOUNT_WOBBLE > delta * 2
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221 | 946fb27c | Paolo Bonzini | && icount_time_shift < MAX_ICOUNT_SHIFT) { |
222 | 946fb27c | Paolo Bonzini | /* The guest is getting too far behind. Speed time up. */
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223 | 946fb27c | Paolo Bonzini | icount_time_shift++; |
224 | 946fb27c | Paolo Bonzini | } |
225 | 946fb27c | Paolo Bonzini | last_delta = delta; |
226 | 946fb27c | Paolo Bonzini | qemu_icount_bias = cur_icount - (qemu_icount << icount_time_shift); |
227 | 946fb27c | Paolo Bonzini | } |
228 | 946fb27c | Paolo Bonzini | |
229 | 946fb27c | Paolo Bonzini | static void icount_adjust_rt(void *opaque) |
230 | 946fb27c | Paolo Bonzini | { |
231 | 40daca54 | Alex Bligh | timer_mod(icount_rt_timer, |
232 | 40daca54 | Alex Bligh | qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
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233 | 946fb27c | Paolo Bonzini | icount_adjust(); |
234 | 946fb27c | Paolo Bonzini | } |
235 | 946fb27c | Paolo Bonzini | |
236 | 946fb27c | Paolo Bonzini | static void icount_adjust_vm(void *opaque) |
237 | 946fb27c | Paolo Bonzini | { |
238 | 40daca54 | Alex Bligh | timer_mod(icount_vm_timer, |
239 | 40daca54 | Alex Bligh | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + |
240 | 40daca54 | Alex Bligh | get_ticks_per_sec() / 10);
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241 | 946fb27c | Paolo Bonzini | icount_adjust(); |
242 | 946fb27c | Paolo Bonzini | } |
243 | 946fb27c | Paolo Bonzini | |
244 | 946fb27c | Paolo Bonzini | static int64_t qemu_icount_round(int64_t count)
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245 | 946fb27c | Paolo Bonzini | { |
246 | 946fb27c | Paolo Bonzini | return (count + (1 << icount_time_shift) - 1) >> icount_time_shift; |
247 | 946fb27c | Paolo Bonzini | } |
248 | 946fb27c | Paolo Bonzini | |
249 | 946fb27c | Paolo Bonzini | static void icount_warp_rt(void *opaque) |
250 | 946fb27c | Paolo Bonzini | { |
251 | 946fb27c | Paolo Bonzini | if (vm_clock_warp_start == -1) { |
252 | 946fb27c | Paolo Bonzini | return;
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253 | 946fb27c | Paolo Bonzini | } |
254 | 946fb27c | Paolo Bonzini | |
255 | 946fb27c | Paolo Bonzini | if (runstate_is_running()) {
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256 | 40daca54 | Alex Bligh | int64_t clock = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); |
257 | 946fb27c | Paolo Bonzini | int64_t warp_delta = clock - vm_clock_warp_start; |
258 | 946fb27c | Paolo Bonzini | if (use_icount == 1) { |
259 | 946fb27c | Paolo Bonzini | qemu_icount_bias += warp_delta; |
260 | 946fb27c | Paolo Bonzini | } else {
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261 | 946fb27c | Paolo Bonzini | /*
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262 | 40daca54 | Alex Bligh | * In adaptive mode, do not let QEMU_CLOCK_VIRTUAL run too
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263 | 946fb27c | Paolo Bonzini | * far ahead of real time.
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264 | 946fb27c | Paolo Bonzini | */
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265 | 946fb27c | Paolo Bonzini | int64_t cur_time = cpu_get_clock(); |
266 | 40daca54 | Alex Bligh | int64_t cur_icount = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
267 | 946fb27c | Paolo Bonzini | int64_t delta = cur_time - cur_icount; |
268 | 946fb27c | Paolo Bonzini | qemu_icount_bias += MIN(warp_delta, delta); |
269 | 946fb27c | Paolo Bonzini | } |
270 | 40daca54 | Alex Bligh | if (qemu_clock_expired(QEMU_CLOCK_VIRTUAL)) {
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271 | 40daca54 | Alex Bligh | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
272 | 946fb27c | Paolo Bonzini | } |
273 | 946fb27c | Paolo Bonzini | } |
274 | 946fb27c | Paolo Bonzini | vm_clock_warp_start = -1;
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275 | 946fb27c | Paolo Bonzini | } |
276 | 946fb27c | Paolo Bonzini | |
277 | 8156be56 | Paolo Bonzini | void qtest_clock_warp(int64_t dest)
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278 | 8156be56 | Paolo Bonzini | { |
279 | 40daca54 | Alex Bligh | int64_t clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
280 | 8156be56 | Paolo Bonzini | assert(qtest_enabled()); |
281 | 8156be56 | Paolo Bonzini | while (clock < dest) {
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282 | 40daca54 | Alex Bligh | int64_t deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
283 | 8156be56 | Paolo Bonzini | int64_t warp = MIN(dest - clock, deadline); |
284 | 8156be56 | Paolo Bonzini | qemu_icount_bias += warp; |
285 | 40daca54 | Alex Bligh | qemu_clock_run_timers(QEMU_CLOCK_VIRTUAL); |
286 | 40daca54 | Alex Bligh | clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
287 | 8156be56 | Paolo Bonzini | } |
288 | 40daca54 | Alex Bligh | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
289 | 8156be56 | Paolo Bonzini | } |
290 | 8156be56 | Paolo Bonzini | |
291 | 40daca54 | Alex Bligh | void qemu_clock_warp(QEMUClockType type)
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292 | 946fb27c | Paolo Bonzini | { |
293 | 946fb27c | Paolo Bonzini | int64_t deadline; |
294 | 946fb27c | Paolo Bonzini | |
295 | 946fb27c | Paolo Bonzini | /*
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296 | 946fb27c | Paolo Bonzini | * There are too many global variables to make the "warp" behavior
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297 | 946fb27c | Paolo Bonzini | * applicable to other clocks. But a clock argument removes the
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298 | 946fb27c | Paolo Bonzini | * need for if statements all over the place.
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299 | 946fb27c | Paolo Bonzini | */
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300 | 40daca54 | Alex Bligh | if (type != QEMU_CLOCK_VIRTUAL || !use_icount) {
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301 | 946fb27c | Paolo Bonzini | return;
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302 | 946fb27c | Paolo Bonzini | } |
303 | 946fb27c | Paolo Bonzini | |
304 | 946fb27c | Paolo Bonzini | /*
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305 | 40daca54 | Alex Bligh | * If the CPUs have been sleeping, advance QEMU_CLOCK_VIRTUAL timer now.
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306 | 40daca54 | Alex Bligh | * This ensures that the deadline for the timer is computed correctly below.
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307 | 946fb27c | Paolo Bonzini | * This also makes sure that the insn counter is synchronized before the
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308 | 946fb27c | Paolo Bonzini | * CPU starts running, in case the CPU is woken by an event other than
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309 | 40daca54 | Alex Bligh | * the earliest QEMU_CLOCK_VIRTUAL timer.
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310 | 946fb27c | Paolo Bonzini | */
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311 | 946fb27c | Paolo Bonzini | icount_warp_rt(NULL);
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312 | 40daca54 | Alex Bligh | if (!all_cpu_threads_idle() || !qemu_clock_has_timers(QEMU_CLOCK_VIRTUAL)) {
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313 | 40daca54 | Alex Bligh | timer_del(icount_warp_timer); |
314 | 946fb27c | Paolo Bonzini | return;
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315 | 946fb27c | Paolo Bonzini | } |
316 | 946fb27c | Paolo Bonzini | |
317 | 8156be56 | Paolo Bonzini | if (qtest_enabled()) {
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318 | 8156be56 | Paolo Bonzini | /* When testing, qtest commands advance icount. */
|
319 | 8156be56 | Paolo Bonzini | return;
|
320 | 8156be56 | Paolo Bonzini | } |
321 | 8156be56 | Paolo Bonzini | |
322 | 40daca54 | Alex Bligh | vm_clock_warp_start = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); |
323 | ac70aafc | Alex Bligh | /* We want to use the earliest deadline from ALL vm_clocks */
|
324 | 40daca54 | Alex Bligh | deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
325 | ac70aafc | Alex Bligh | |
326 | ac70aafc | Alex Bligh | /* Maintain prior (possibly buggy) behaviour where if no deadline
|
327 | 40daca54 | Alex Bligh | * was set (as there is no QEMU_CLOCK_VIRTUAL timer) or it is more than
|
328 | ac70aafc | Alex Bligh | * INT32_MAX nanoseconds ahead, we still use INT32_MAX
|
329 | ac70aafc | Alex Bligh | * nanoseconds.
|
330 | ac70aafc | Alex Bligh | */
|
331 | ac70aafc | Alex Bligh | if ((deadline < 0) || (deadline > INT32_MAX)) { |
332 | ac70aafc | Alex Bligh | deadline = INT32_MAX; |
333 | ac70aafc | Alex Bligh | } |
334 | ac70aafc | Alex Bligh | |
335 | 946fb27c | Paolo Bonzini | if (deadline > 0) { |
336 | 946fb27c | Paolo Bonzini | /*
|
337 | 40daca54 | Alex Bligh | * Ensure QEMU_CLOCK_VIRTUAL proceeds even when the virtual CPU goes to
|
338 | 946fb27c | Paolo Bonzini | * sleep. Otherwise, the CPU might be waiting for a future timer
|
339 | 946fb27c | Paolo Bonzini | * interrupt to wake it up, but the interrupt never comes because
|
340 | 946fb27c | Paolo Bonzini | * the vCPU isn't running any insns and thus doesn't advance the
|
341 | 40daca54 | Alex Bligh | * QEMU_CLOCK_VIRTUAL.
|
342 | 946fb27c | Paolo Bonzini | *
|
343 | 946fb27c | Paolo Bonzini | * An extreme solution for this problem would be to never let VCPUs
|
344 | 40daca54 | Alex Bligh | * sleep in icount mode if there is a pending QEMU_CLOCK_VIRTUAL
|
345 | 40daca54 | Alex Bligh | * timer; rather time could just advance to the next QEMU_CLOCK_VIRTUAL
|
346 | 40daca54 | Alex Bligh | * event. Instead, we do stop VCPUs and only advance QEMU_CLOCK_VIRTUAL
|
347 | 40daca54 | Alex Bligh | * after some e"real" time, (related to the time left until the next
|
348 | 40daca54 | Alex Bligh | * event) has passed. The QEMU_CLOCK_REALTIME timer will do this.
|
349 | 40daca54 | Alex Bligh | * This avoids that the warps are visible externally; for example,
|
350 | 40daca54 | Alex Bligh | * you will not be sending network packets continuously instead of
|
351 | 40daca54 | Alex Bligh | * every 100ms.
|
352 | 946fb27c | Paolo Bonzini | */
|
353 | 40daca54 | Alex Bligh | timer_mod(icount_warp_timer, vm_clock_warp_start + deadline); |
354 | ac70aafc | Alex Bligh | } else if (deadline == 0) { |
355 | 40daca54 | Alex Bligh | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
356 | 946fb27c | Paolo Bonzini | } |
357 | 946fb27c | Paolo Bonzini | } |
358 | 946fb27c | Paolo Bonzini | |
359 | 946fb27c | Paolo Bonzini | static const VMStateDescription vmstate_timers = { |
360 | 946fb27c | Paolo Bonzini | .name = "timer",
|
361 | 946fb27c | Paolo Bonzini | .version_id = 2,
|
362 | 946fb27c | Paolo Bonzini | .minimum_version_id = 1,
|
363 | 946fb27c | Paolo Bonzini | .minimum_version_id_old = 1,
|
364 | 946fb27c | Paolo Bonzini | .fields = (VMStateField[]) { |
365 | 946fb27c | Paolo Bonzini | VMSTATE_INT64(cpu_ticks_offset, TimersState), |
366 | 946fb27c | Paolo Bonzini | VMSTATE_INT64(dummy, TimersState), |
367 | 946fb27c | Paolo Bonzini | VMSTATE_INT64_V(cpu_clock_offset, TimersState, 2),
|
368 | 946fb27c | Paolo Bonzini | VMSTATE_END_OF_LIST() |
369 | 946fb27c | Paolo Bonzini | } |
370 | 946fb27c | Paolo Bonzini | }; |
371 | 946fb27c | Paolo Bonzini | |
372 | 946fb27c | Paolo Bonzini | void configure_icount(const char *option) |
373 | 946fb27c | Paolo Bonzini | { |
374 | 946fb27c | Paolo Bonzini | vmstate_register(NULL, 0, &vmstate_timers, &timers_state); |
375 | 946fb27c | Paolo Bonzini | if (!option) {
|
376 | 946fb27c | Paolo Bonzini | return;
|
377 | 946fb27c | Paolo Bonzini | } |
378 | 946fb27c | Paolo Bonzini | |
379 | 40daca54 | Alex Bligh | icount_warp_timer = timer_new_ns(QEMU_CLOCK_REALTIME, |
380 | 40daca54 | Alex Bligh | icount_warp_rt, NULL);
|
381 | 946fb27c | Paolo Bonzini | if (strcmp(option, "auto") != 0) { |
382 | 946fb27c | Paolo Bonzini | icount_time_shift = strtol(option, NULL, 0); |
383 | 946fb27c | Paolo Bonzini | use_icount = 1;
|
384 | 946fb27c | Paolo Bonzini | return;
|
385 | 946fb27c | Paolo Bonzini | } |
386 | 946fb27c | Paolo Bonzini | |
387 | 946fb27c | Paolo Bonzini | use_icount = 2;
|
388 | 946fb27c | Paolo Bonzini | |
389 | 946fb27c | Paolo Bonzini | /* 125MIPS seems a reasonable initial guess at the guest speed.
|
390 | 946fb27c | Paolo Bonzini | It will be corrected fairly quickly anyway. */
|
391 | 946fb27c | Paolo Bonzini | icount_time_shift = 3;
|
392 | 946fb27c | Paolo Bonzini | |
393 | 946fb27c | Paolo Bonzini | /* Have both realtime and virtual time triggers for speed adjustment.
|
394 | 946fb27c | Paolo Bonzini | The realtime trigger catches emulated time passing too slowly,
|
395 | 946fb27c | Paolo Bonzini | the virtual time trigger catches emulated time passing too fast.
|
396 | 946fb27c | Paolo Bonzini | Realtime triggers occur even when idle, so use them less frequently
|
397 | 946fb27c | Paolo Bonzini | than VM triggers. */
|
398 | 40daca54 | Alex Bligh | icount_rt_timer = timer_new_ms(QEMU_CLOCK_REALTIME, |
399 | 40daca54 | Alex Bligh | icount_adjust_rt, NULL);
|
400 | 40daca54 | Alex Bligh | timer_mod(icount_rt_timer, |
401 | 40daca54 | Alex Bligh | qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
|
402 | 40daca54 | Alex Bligh | icount_vm_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, |
403 | 40daca54 | Alex Bligh | icount_adjust_vm, NULL);
|
404 | 40daca54 | Alex Bligh | timer_mod(icount_vm_timer, |
405 | 40daca54 | Alex Bligh | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + |
406 | 40daca54 | Alex Bligh | get_ticks_per_sec() / 10);
|
407 | 946fb27c | Paolo Bonzini | } |
408 | 946fb27c | Paolo Bonzini | |
409 | 946fb27c | Paolo Bonzini | /***********************************************************/
|
410 | 296af7c9 | Blue Swirl | void hw_error(const char *fmt, ...) |
411 | 296af7c9 | Blue Swirl | { |
412 | 296af7c9 | Blue Swirl | va_list ap; |
413 | 55e5c285 | Andreas Färber | CPUState *cpu; |
414 | 296af7c9 | Blue Swirl | |
415 | 296af7c9 | Blue Swirl | va_start(ap, fmt); |
416 | 296af7c9 | Blue Swirl | fprintf(stderr, "qemu: hardware error: ");
|
417 | 296af7c9 | Blue Swirl | vfprintf(stderr, fmt, ap); |
418 | 296af7c9 | Blue Swirl | fprintf(stderr, "\n");
|
419 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
420 | 55e5c285 | Andreas Färber | fprintf(stderr, "CPU #%d:\n", cpu->cpu_index);
|
421 | 878096ee | Andreas Färber | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_FPU); |
422 | 296af7c9 | Blue Swirl | } |
423 | 296af7c9 | Blue Swirl | va_end(ap); |
424 | 296af7c9 | Blue Swirl | abort(); |
425 | 296af7c9 | Blue Swirl | } |
426 | 296af7c9 | Blue Swirl | |
427 | 296af7c9 | Blue Swirl | void cpu_synchronize_all_states(void) |
428 | 296af7c9 | Blue Swirl | { |
429 | 182735ef | Andreas Färber | CPUState *cpu; |
430 | 296af7c9 | Blue Swirl | |
431 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
432 | 182735ef | Andreas Färber | cpu_synchronize_state(cpu); |
433 | 296af7c9 | Blue Swirl | } |
434 | 296af7c9 | Blue Swirl | } |
435 | 296af7c9 | Blue Swirl | |
436 | 296af7c9 | Blue Swirl | void cpu_synchronize_all_post_reset(void) |
437 | 296af7c9 | Blue Swirl | { |
438 | 182735ef | Andreas Färber | CPUState *cpu; |
439 | 296af7c9 | Blue Swirl | |
440 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
441 | 182735ef | Andreas Färber | cpu_synchronize_post_reset(cpu); |
442 | 296af7c9 | Blue Swirl | } |
443 | 296af7c9 | Blue Swirl | } |
444 | 296af7c9 | Blue Swirl | |
445 | 296af7c9 | Blue Swirl | void cpu_synchronize_all_post_init(void) |
446 | 296af7c9 | Blue Swirl | { |
447 | 182735ef | Andreas Färber | CPUState *cpu; |
448 | 296af7c9 | Blue Swirl | |
449 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
450 | 182735ef | Andreas Färber | cpu_synchronize_post_init(cpu); |
451 | 296af7c9 | Blue Swirl | } |
452 | 296af7c9 | Blue Swirl | } |
453 | 296af7c9 | Blue Swirl | |
454 | 56983463 | Kevin Wolf | static int do_vm_stop(RunState state) |
455 | 296af7c9 | Blue Swirl | { |
456 | 56983463 | Kevin Wolf | int ret = 0; |
457 | 56983463 | Kevin Wolf | |
458 | 1354869c | Luiz Capitulino | if (runstate_is_running()) {
|
459 | 296af7c9 | Blue Swirl | cpu_disable_ticks(); |
460 | 296af7c9 | Blue Swirl | pause_all_vcpus(); |
461 | f5bbfba1 | Luiz Capitulino | runstate_set(state); |
462 | 1dfb4dd9 | Luiz Capitulino | vm_state_notify(0, state);
|
463 | 296af7c9 | Blue Swirl | monitor_protocol_event(QEVENT_STOP, NULL);
|
464 | 296af7c9 | Blue Swirl | } |
465 | 56983463 | Kevin Wolf | |
466 | 594a45ce | Kevin Wolf | bdrv_drain_all(); |
467 | 594a45ce | Kevin Wolf | ret = bdrv_flush_all(); |
468 | 594a45ce | Kevin Wolf | |
469 | 56983463 | Kevin Wolf | return ret;
|
470 | 296af7c9 | Blue Swirl | } |
471 | 296af7c9 | Blue Swirl | |
472 | a1fcaa73 | Andreas Färber | static bool cpu_can_run(CPUState *cpu) |
473 | 296af7c9 | Blue Swirl | { |
474 | 4fdeee7c | Andreas Färber | if (cpu->stop) {
|
475 | a1fcaa73 | Andreas Färber | return false; |
476 | 0ab07c62 | Jan Kiszka | } |
477 | 321bc0b2 | Tiejun Chen | if (cpu_is_stopped(cpu)) {
|
478 | a1fcaa73 | Andreas Färber | return false; |
479 | 0ab07c62 | Jan Kiszka | } |
480 | a1fcaa73 | Andreas Färber | return true; |
481 | 296af7c9 | Blue Swirl | } |
482 | 296af7c9 | Blue Swirl | |
483 | 91325046 | Andreas Färber | static void cpu_handle_guest_debug(CPUState *cpu) |
484 | 83f338f7 | Jan Kiszka | { |
485 | 64f6b346 | Andreas Färber | gdb_set_stop_cpu(cpu); |
486 | 8cf71710 | Jan Kiszka | qemu_system_debug_request(); |
487 | f324e766 | Andreas Färber | cpu->stopped = true;
|
488 | 3c638d06 | Jan Kiszka | } |
489 | 3c638d06 | Jan Kiszka | |
490 | 714bd040 | Paolo Bonzini | static void cpu_signal(int sig) |
491 | 714bd040 | Paolo Bonzini | { |
492 | 4917cf44 | Andreas Färber | if (current_cpu) {
|
493 | 4917cf44 | Andreas Färber | cpu_exit(current_cpu); |
494 | 714bd040 | Paolo Bonzini | } |
495 | 714bd040 | Paolo Bonzini | exit_request = 1;
|
496 | 714bd040 | Paolo Bonzini | } |
497 | 714bd040 | Paolo Bonzini | |
498 | 6d9cb73c | Jan Kiszka | #ifdef CONFIG_LINUX
|
499 | 6d9cb73c | Jan Kiszka | static void sigbus_reraise(void) |
500 | 6d9cb73c | Jan Kiszka | { |
501 | 6d9cb73c | Jan Kiszka | sigset_t set; |
502 | 6d9cb73c | Jan Kiszka | struct sigaction action;
|
503 | 6d9cb73c | Jan Kiszka | |
504 | 6d9cb73c | Jan Kiszka | memset(&action, 0, sizeof(action)); |
505 | 6d9cb73c | Jan Kiszka | action.sa_handler = SIG_DFL; |
506 | 6d9cb73c | Jan Kiszka | if (!sigaction(SIGBUS, &action, NULL)) { |
507 | 6d9cb73c | Jan Kiszka | raise(SIGBUS); |
508 | 6d9cb73c | Jan Kiszka | sigemptyset(&set); |
509 | 6d9cb73c | Jan Kiszka | sigaddset(&set, SIGBUS); |
510 | 6d9cb73c | Jan Kiszka | sigprocmask(SIG_UNBLOCK, &set, NULL);
|
511 | 6d9cb73c | Jan Kiszka | } |
512 | 6d9cb73c | Jan Kiszka | perror("Failed to re-raise SIGBUS!\n");
|
513 | 6d9cb73c | Jan Kiszka | abort(); |
514 | 6d9cb73c | Jan Kiszka | } |
515 | 6d9cb73c | Jan Kiszka | |
516 | 6d9cb73c | Jan Kiszka | static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo, |
517 | 6d9cb73c | Jan Kiszka | void *ctx)
|
518 | 6d9cb73c | Jan Kiszka | { |
519 | 6d9cb73c | Jan Kiszka | if (kvm_on_sigbus(siginfo->ssi_code,
|
520 | 6d9cb73c | Jan Kiszka | (void *)(intptr_t)siginfo->ssi_addr)) {
|
521 | 6d9cb73c | Jan Kiszka | sigbus_reraise(); |
522 | 6d9cb73c | Jan Kiszka | } |
523 | 6d9cb73c | Jan Kiszka | } |
524 | 6d9cb73c | Jan Kiszka | |
525 | 6d9cb73c | Jan Kiszka | static void qemu_init_sigbus(void) |
526 | 6d9cb73c | Jan Kiszka | { |
527 | 6d9cb73c | Jan Kiszka | struct sigaction action;
|
528 | 6d9cb73c | Jan Kiszka | |
529 | 6d9cb73c | Jan Kiszka | memset(&action, 0, sizeof(action)); |
530 | 6d9cb73c | Jan Kiszka | action.sa_flags = SA_SIGINFO; |
531 | 6d9cb73c | Jan Kiszka | action.sa_sigaction = (void (*)(int, siginfo_t*, void*))sigbus_handler; |
532 | 6d9cb73c | Jan Kiszka | sigaction(SIGBUS, &action, NULL);
|
533 | 6d9cb73c | Jan Kiszka | |
534 | 6d9cb73c | Jan Kiszka | prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0); |
535 | 6d9cb73c | Jan Kiszka | } |
536 | 6d9cb73c | Jan Kiszka | |
537 | 290adf38 | Andreas Färber | static void qemu_kvm_eat_signals(CPUState *cpu) |
538 | 1ab3c6c0 | Jan Kiszka | { |
539 | 1ab3c6c0 | Jan Kiszka | struct timespec ts = { 0, 0 }; |
540 | 1ab3c6c0 | Jan Kiszka | siginfo_t siginfo; |
541 | 1ab3c6c0 | Jan Kiszka | sigset_t waitset; |
542 | 1ab3c6c0 | Jan Kiszka | sigset_t chkset; |
543 | 1ab3c6c0 | Jan Kiszka | int r;
|
544 | 1ab3c6c0 | Jan Kiszka | |
545 | 1ab3c6c0 | Jan Kiszka | sigemptyset(&waitset); |
546 | 1ab3c6c0 | Jan Kiszka | sigaddset(&waitset, SIG_IPI); |
547 | 1ab3c6c0 | Jan Kiszka | sigaddset(&waitset, SIGBUS); |
548 | 1ab3c6c0 | Jan Kiszka | |
549 | 1ab3c6c0 | Jan Kiszka | do {
|
550 | 1ab3c6c0 | Jan Kiszka | r = sigtimedwait(&waitset, &siginfo, &ts); |
551 | 1ab3c6c0 | Jan Kiszka | if (r == -1 && !(errno == EAGAIN || errno == EINTR)) { |
552 | 1ab3c6c0 | Jan Kiszka | perror("sigtimedwait");
|
553 | 1ab3c6c0 | Jan Kiszka | exit(1);
|
554 | 1ab3c6c0 | Jan Kiszka | } |
555 | 1ab3c6c0 | Jan Kiszka | |
556 | 1ab3c6c0 | Jan Kiszka | switch (r) {
|
557 | 1ab3c6c0 | Jan Kiszka | case SIGBUS:
|
558 | 290adf38 | Andreas Färber | if (kvm_on_sigbus_vcpu(cpu, siginfo.si_code, siginfo.si_addr)) {
|
559 | 1ab3c6c0 | Jan Kiszka | sigbus_reraise(); |
560 | 1ab3c6c0 | Jan Kiszka | } |
561 | 1ab3c6c0 | Jan Kiszka | break;
|
562 | 1ab3c6c0 | Jan Kiszka | default:
|
563 | 1ab3c6c0 | Jan Kiszka | break;
|
564 | 1ab3c6c0 | Jan Kiszka | } |
565 | 1ab3c6c0 | Jan Kiszka | |
566 | 1ab3c6c0 | Jan Kiszka | r = sigpending(&chkset); |
567 | 1ab3c6c0 | Jan Kiszka | if (r == -1) { |
568 | 1ab3c6c0 | Jan Kiszka | perror("sigpending");
|
569 | 1ab3c6c0 | Jan Kiszka | exit(1);
|
570 | 1ab3c6c0 | Jan Kiszka | } |
571 | 1ab3c6c0 | Jan Kiszka | } while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS));
|
572 | 1ab3c6c0 | Jan Kiszka | } |
573 | 1ab3c6c0 | Jan Kiszka | |
574 | 6d9cb73c | Jan Kiszka | #else /* !CONFIG_LINUX */ |
575 | 6d9cb73c | Jan Kiszka | |
576 | 6d9cb73c | Jan Kiszka | static void qemu_init_sigbus(void) |
577 | 6d9cb73c | Jan Kiszka | { |
578 | 6d9cb73c | Jan Kiszka | } |
579 | 1ab3c6c0 | Jan Kiszka | |
580 | 290adf38 | Andreas Färber | static void qemu_kvm_eat_signals(CPUState *cpu) |
581 | 1ab3c6c0 | Jan Kiszka | { |
582 | 1ab3c6c0 | Jan Kiszka | } |
583 | 6d9cb73c | Jan Kiszka | #endif /* !CONFIG_LINUX */ |
584 | 6d9cb73c | Jan Kiszka | |
585 | 296af7c9 | Blue Swirl | #ifndef _WIN32
|
586 | 55f8d6ac | Jan Kiszka | static void dummy_signal(int sig) |
587 | 55f8d6ac | Jan Kiszka | { |
588 | 55f8d6ac | Jan Kiszka | } |
589 | 55f8d6ac | Jan Kiszka | |
590 | 13618e05 | Andreas Färber | static void qemu_kvm_init_cpu_signals(CPUState *cpu) |
591 | 714bd040 | Paolo Bonzini | { |
592 | 714bd040 | Paolo Bonzini | int r;
|
593 | 714bd040 | Paolo Bonzini | sigset_t set; |
594 | 714bd040 | Paolo Bonzini | struct sigaction sigact;
|
595 | 714bd040 | Paolo Bonzini | |
596 | 714bd040 | Paolo Bonzini | memset(&sigact, 0, sizeof(sigact)); |
597 | 714bd040 | Paolo Bonzini | sigact.sa_handler = dummy_signal; |
598 | 714bd040 | Paolo Bonzini | sigaction(SIG_IPI, &sigact, NULL);
|
599 | 714bd040 | Paolo Bonzini | |
600 | 714bd040 | Paolo Bonzini | pthread_sigmask(SIG_BLOCK, NULL, &set);
|
601 | 714bd040 | Paolo Bonzini | sigdelset(&set, SIG_IPI); |
602 | 714bd040 | Paolo Bonzini | sigdelset(&set, SIGBUS); |
603 | 491d6e80 | Andreas Färber | r = kvm_set_signal_mask(cpu, &set); |
604 | 714bd040 | Paolo Bonzini | if (r) {
|
605 | 714bd040 | Paolo Bonzini | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r));
|
606 | 714bd040 | Paolo Bonzini | exit(1);
|
607 | 714bd040 | Paolo Bonzini | } |
608 | 714bd040 | Paolo Bonzini | } |
609 | 714bd040 | Paolo Bonzini | |
610 | 714bd040 | Paolo Bonzini | static void qemu_tcg_init_cpu_signals(void) |
611 | 714bd040 | Paolo Bonzini | { |
612 | 714bd040 | Paolo Bonzini | sigset_t set; |
613 | 714bd040 | Paolo Bonzini | struct sigaction sigact;
|
614 | 714bd040 | Paolo Bonzini | |
615 | 714bd040 | Paolo Bonzini | memset(&sigact, 0, sizeof(sigact)); |
616 | 714bd040 | Paolo Bonzini | sigact.sa_handler = cpu_signal; |
617 | 714bd040 | Paolo Bonzini | sigaction(SIG_IPI, &sigact, NULL);
|
618 | 714bd040 | Paolo Bonzini | |
619 | 714bd040 | Paolo Bonzini | sigemptyset(&set); |
620 | 714bd040 | Paolo Bonzini | sigaddset(&set, SIG_IPI); |
621 | 714bd040 | Paolo Bonzini | pthread_sigmask(SIG_UNBLOCK, &set, NULL);
|
622 | 714bd040 | Paolo Bonzini | } |
623 | 714bd040 | Paolo Bonzini | |
624 | 55f8d6ac | Jan Kiszka | #else /* _WIN32 */ |
625 | 13618e05 | Andreas Färber | static void qemu_kvm_init_cpu_signals(CPUState *cpu) |
626 | ff48eb5f | Jan Kiszka | { |
627 | 714bd040 | Paolo Bonzini | abort(); |
628 | 714bd040 | Paolo Bonzini | } |
629 | ff48eb5f | Jan Kiszka | |
630 | 714bd040 | Paolo Bonzini | static void qemu_tcg_init_cpu_signals(void) |
631 | 714bd040 | Paolo Bonzini | { |
632 | ff48eb5f | Jan Kiszka | } |
633 | 714bd040 | Paolo Bonzini | #endif /* _WIN32 */ |
634 | ff48eb5f | Jan Kiszka | |
635 | b2532d88 | Stefan Weil | static QemuMutex qemu_global_mutex;
|
636 | 46daff13 | Paolo Bonzini | static QemuCond qemu_io_proceeded_cond;
|
637 | 46daff13 | Paolo Bonzini | static bool iothread_requesting_mutex; |
638 | 296af7c9 | Blue Swirl | |
639 | 296af7c9 | Blue Swirl | static QemuThread io_thread;
|
640 | 296af7c9 | Blue Swirl | |
641 | 296af7c9 | Blue Swirl | static QemuThread *tcg_cpu_thread;
|
642 | 296af7c9 | Blue Swirl | static QemuCond *tcg_halt_cond;
|
643 | 296af7c9 | Blue Swirl | |
644 | 296af7c9 | Blue Swirl | /* cpu creation */
|
645 | 296af7c9 | Blue Swirl | static QemuCond qemu_cpu_cond;
|
646 | 296af7c9 | Blue Swirl | /* system init */
|
647 | 296af7c9 | Blue Swirl | static QemuCond qemu_pause_cond;
|
648 | e82bcec2 | Marcelo Tosatti | static QemuCond qemu_work_cond;
|
649 | 296af7c9 | Blue Swirl | |
650 | d3b12f5d | Paolo Bonzini | void qemu_init_cpu_loop(void) |
651 | 296af7c9 | Blue Swirl | { |
652 | 6d9cb73c | Jan Kiszka | qemu_init_sigbus(); |
653 | ed94592b | Anthony Liguori | qemu_cond_init(&qemu_cpu_cond); |
654 | ed94592b | Anthony Liguori | qemu_cond_init(&qemu_pause_cond); |
655 | ed94592b | Anthony Liguori | qemu_cond_init(&qemu_work_cond); |
656 | 46daff13 | Paolo Bonzini | qemu_cond_init(&qemu_io_proceeded_cond); |
657 | 296af7c9 | Blue Swirl | qemu_mutex_init(&qemu_global_mutex); |
658 | 296af7c9 | Blue Swirl | |
659 | b7680cb6 | Jan Kiszka | qemu_thread_get_self(&io_thread); |
660 | 296af7c9 | Blue Swirl | } |
661 | 296af7c9 | Blue Swirl | |
662 | f100f0b3 | Andreas Färber | void run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data) |
663 | e82bcec2 | Marcelo Tosatti | { |
664 | e82bcec2 | Marcelo Tosatti | struct qemu_work_item wi;
|
665 | e82bcec2 | Marcelo Tosatti | |
666 | 60e82579 | Andreas Färber | if (qemu_cpu_is_self(cpu)) {
|
667 | e82bcec2 | Marcelo Tosatti | func(data); |
668 | e82bcec2 | Marcelo Tosatti | return;
|
669 | e82bcec2 | Marcelo Tosatti | } |
670 | e82bcec2 | Marcelo Tosatti | |
671 | e82bcec2 | Marcelo Tosatti | wi.func = func; |
672 | e82bcec2 | Marcelo Tosatti | wi.data = data; |
673 | 3c02270d | Chegu Vinod | wi.free = false;
|
674 | c64ca814 | Andreas Färber | if (cpu->queued_work_first == NULL) { |
675 | c64ca814 | Andreas Färber | cpu->queued_work_first = &wi; |
676 | 0ab07c62 | Jan Kiszka | } else {
|
677 | c64ca814 | Andreas Färber | cpu->queued_work_last->next = &wi; |
678 | 0ab07c62 | Jan Kiszka | } |
679 | c64ca814 | Andreas Färber | cpu->queued_work_last = &wi; |
680 | e82bcec2 | Marcelo Tosatti | wi.next = NULL;
|
681 | e82bcec2 | Marcelo Tosatti | wi.done = false;
|
682 | e82bcec2 | Marcelo Tosatti | |
683 | c08d7424 | Andreas Färber | qemu_cpu_kick(cpu); |
684 | e82bcec2 | Marcelo Tosatti | while (!wi.done) {
|
685 | 4917cf44 | Andreas Färber | CPUState *self_cpu = current_cpu; |
686 | e82bcec2 | Marcelo Tosatti | |
687 | e82bcec2 | Marcelo Tosatti | qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex); |
688 | 4917cf44 | Andreas Färber | current_cpu = self_cpu; |
689 | e82bcec2 | Marcelo Tosatti | } |
690 | e82bcec2 | Marcelo Tosatti | } |
691 | e82bcec2 | Marcelo Tosatti | |
692 | 3c02270d | Chegu Vinod | void async_run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data) |
693 | 3c02270d | Chegu Vinod | { |
694 | 3c02270d | Chegu Vinod | struct qemu_work_item *wi;
|
695 | 3c02270d | Chegu Vinod | |
696 | 3c02270d | Chegu Vinod | if (qemu_cpu_is_self(cpu)) {
|
697 | 3c02270d | Chegu Vinod | func(data); |
698 | 3c02270d | Chegu Vinod | return;
|
699 | 3c02270d | Chegu Vinod | } |
700 | 3c02270d | Chegu Vinod | |
701 | 3c02270d | Chegu Vinod | wi = g_malloc0(sizeof(struct qemu_work_item)); |
702 | 3c02270d | Chegu Vinod | wi->func = func; |
703 | 3c02270d | Chegu Vinod | wi->data = data; |
704 | 3c02270d | Chegu Vinod | wi->free = true;
|
705 | 3c02270d | Chegu Vinod | if (cpu->queued_work_first == NULL) { |
706 | 3c02270d | Chegu Vinod | cpu->queued_work_first = wi; |
707 | 3c02270d | Chegu Vinod | } else {
|
708 | 3c02270d | Chegu Vinod | cpu->queued_work_last->next = wi; |
709 | 3c02270d | Chegu Vinod | } |
710 | 3c02270d | Chegu Vinod | cpu->queued_work_last = wi; |
711 | 3c02270d | Chegu Vinod | wi->next = NULL;
|
712 | 3c02270d | Chegu Vinod | wi->done = false;
|
713 | 3c02270d | Chegu Vinod | |
714 | 3c02270d | Chegu Vinod | qemu_cpu_kick(cpu); |
715 | 3c02270d | Chegu Vinod | } |
716 | 3c02270d | Chegu Vinod | |
717 | 6d45b109 | Andreas Färber | static void flush_queued_work(CPUState *cpu) |
718 | e82bcec2 | Marcelo Tosatti | { |
719 | e82bcec2 | Marcelo Tosatti | struct qemu_work_item *wi;
|
720 | e82bcec2 | Marcelo Tosatti | |
721 | c64ca814 | Andreas Färber | if (cpu->queued_work_first == NULL) { |
722 | e82bcec2 | Marcelo Tosatti | return;
|
723 | 0ab07c62 | Jan Kiszka | } |
724 | e82bcec2 | Marcelo Tosatti | |
725 | c64ca814 | Andreas Färber | while ((wi = cpu->queued_work_first)) {
|
726 | c64ca814 | Andreas Färber | cpu->queued_work_first = wi->next; |
727 | e82bcec2 | Marcelo Tosatti | wi->func(wi->data); |
728 | e82bcec2 | Marcelo Tosatti | wi->done = true;
|
729 | 3c02270d | Chegu Vinod | if (wi->free) {
|
730 | 3c02270d | Chegu Vinod | g_free(wi); |
731 | 3c02270d | Chegu Vinod | } |
732 | e82bcec2 | Marcelo Tosatti | } |
733 | c64ca814 | Andreas Färber | cpu->queued_work_last = NULL;
|
734 | e82bcec2 | Marcelo Tosatti | qemu_cond_broadcast(&qemu_work_cond); |
735 | e82bcec2 | Marcelo Tosatti | } |
736 | e82bcec2 | Marcelo Tosatti | |
737 | 509a0d78 | Andreas Färber | static void qemu_wait_io_event_common(CPUState *cpu) |
738 | 296af7c9 | Blue Swirl | { |
739 | 4fdeee7c | Andreas Färber | if (cpu->stop) {
|
740 | 4fdeee7c | Andreas Färber | cpu->stop = false;
|
741 | f324e766 | Andreas Färber | cpu->stopped = true;
|
742 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_pause_cond); |
743 | 296af7c9 | Blue Swirl | } |
744 | 6d45b109 | Andreas Färber | flush_queued_work(cpu); |
745 | 216fc9a4 | Andreas Färber | cpu->thread_kicked = false;
|
746 | 296af7c9 | Blue Swirl | } |
747 | 296af7c9 | Blue Swirl | |
748 | 6cabe1f3 | Jan Kiszka | static void qemu_tcg_wait_io_event(void) |
749 | 296af7c9 | Blue Swirl | { |
750 | 182735ef | Andreas Färber | CPUState *cpu; |
751 | 6cabe1f3 | Jan Kiszka | |
752 | 16400322 | Jan Kiszka | while (all_cpu_threads_idle()) {
|
753 | ab33fcda | Paolo Bonzini | /* Start accounting real time to the virtual clock if the CPUs
|
754 | ab33fcda | Paolo Bonzini | are idle. */
|
755 | 40daca54 | Alex Bligh | qemu_clock_warp(QEMU_CLOCK_VIRTUAL); |
756 | 9705fbb5 | Paolo Bonzini | qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); |
757 | 16400322 | Jan Kiszka | } |
758 | 296af7c9 | Blue Swirl | |
759 | 46daff13 | Paolo Bonzini | while (iothread_requesting_mutex) {
|
760 | 46daff13 | Paolo Bonzini | qemu_cond_wait(&qemu_io_proceeded_cond, &qemu_global_mutex); |
761 | 46daff13 | Paolo Bonzini | } |
762 | 6cabe1f3 | Jan Kiszka | |
763 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
764 | 182735ef | Andreas Färber | qemu_wait_io_event_common(cpu); |
765 | 6cabe1f3 | Jan Kiszka | } |
766 | 296af7c9 | Blue Swirl | } |
767 | 296af7c9 | Blue Swirl | |
768 | fd529e8f | Andreas Färber | static void qemu_kvm_wait_io_event(CPUState *cpu) |
769 | 296af7c9 | Blue Swirl | { |
770 | a98ae1d8 | Andreas Färber | while (cpu_thread_is_idle(cpu)) {
|
771 | f5c121b8 | Andreas Färber | qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex); |
772 | 16400322 | Jan Kiszka | } |
773 | 296af7c9 | Blue Swirl | |
774 | 290adf38 | Andreas Färber | qemu_kvm_eat_signals(cpu); |
775 | 509a0d78 | Andreas Färber | qemu_wait_io_event_common(cpu); |
776 | 296af7c9 | Blue Swirl | } |
777 | 296af7c9 | Blue Swirl | |
778 | 7e97cd88 | Jan Kiszka | static void *qemu_kvm_cpu_thread_fn(void *arg) |
779 | 296af7c9 | Blue Swirl | { |
780 | 48a106bd | Andreas Färber | CPUState *cpu = arg; |
781 | 84b4915d | Jan Kiszka | int r;
|
782 | 296af7c9 | Blue Swirl | |
783 | 6164e6d6 | Marcelo Tosatti | qemu_mutex_lock(&qemu_global_mutex); |
784 | 814e612e | Andreas Färber | qemu_thread_get_self(cpu->thread); |
785 | 9f09e18a | Andreas Färber | cpu->thread_id = qemu_get_thread_id(); |
786 | 4917cf44 | Andreas Färber | current_cpu = cpu; |
787 | 296af7c9 | Blue Swirl | |
788 | 504134d2 | Andreas Färber | r = kvm_init_vcpu(cpu); |
789 | 84b4915d | Jan Kiszka | if (r < 0) { |
790 | 84b4915d | Jan Kiszka | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r));
|
791 | 84b4915d | Jan Kiszka | exit(1);
|
792 | 84b4915d | Jan Kiszka | } |
793 | 296af7c9 | Blue Swirl | |
794 | 13618e05 | Andreas Färber | qemu_kvm_init_cpu_signals(cpu); |
795 | 296af7c9 | Blue Swirl | |
796 | 296af7c9 | Blue Swirl | /* signal CPU creation */
|
797 | 61a46217 | Andreas Färber | cpu->created = true;
|
798 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_cpu_cond); |
799 | 296af7c9 | Blue Swirl | |
800 | 296af7c9 | Blue Swirl | while (1) { |
801 | a1fcaa73 | Andreas Färber | if (cpu_can_run(cpu)) {
|
802 | 1458c363 | Andreas Färber | r = kvm_cpu_exec(cpu); |
803 | 83f338f7 | Jan Kiszka | if (r == EXCP_DEBUG) {
|
804 | 91325046 | Andreas Färber | cpu_handle_guest_debug(cpu); |
805 | 83f338f7 | Jan Kiszka | } |
806 | 0ab07c62 | Jan Kiszka | } |
807 | fd529e8f | Andreas Färber | qemu_kvm_wait_io_event(cpu); |
808 | 296af7c9 | Blue Swirl | } |
809 | 296af7c9 | Blue Swirl | |
810 | 296af7c9 | Blue Swirl | return NULL; |
811 | 296af7c9 | Blue Swirl | } |
812 | 296af7c9 | Blue Swirl | |
813 | c7f0f3b1 | Anthony Liguori | static void *qemu_dummy_cpu_thread_fn(void *arg) |
814 | c7f0f3b1 | Anthony Liguori | { |
815 | c7f0f3b1 | Anthony Liguori | #ifdef _WIN32
|
816 | c7f0f3b1 | Anthony Liguori | fprintf(stderr, "qtest is not supported under Windows\n");
|
817 | c7f0f3b1 | Anthony Liguori | exit(1);
|
818 | c7f0f3b1 | Anthony Liguori | #else
|
819 | 10a9021d | Andreas Färber | CPUState *cpu = arg; |
820 | c7f0f3b1 | Anthony Liguori | sigset_t waitset; |
821 | c7f0f3b1 | Anthony Liguori | int r;
|
822 | c7f0f3b1 | Anthony Liguori | |
823 | c7f0f3b1 | Anthony Liguori | qemu_mutex_lock_iothread(); |
824 | 814e612e | Andreas Färber | qemu_thread_get_self(cpu->thread); |
825 | 9f09e18a | Andreas Färber | cpu->thread_id = qemu_get_thread_id(); |
826 | c7f0f3b1 | Anthony Liguori | |
827 | c7f0f3b1 | Anthony Liguori | sigemptyset(&waitset); |
828 | c7f0f3b1 | Anthony Liguori | sigaddset(&waitset, SIG_IPI); |
829 | c7f0f3b1 | Anthony Liguori | |
830 | c7f0f3b1 | Anthony Liguori | /* signal CPU creation */
|
831 | 61a46217 | Andreas Färber | cpu->created = true;
|
832 | c7f0f3b1 | Anthony Liguori | qemu_cond_signal(&qemu_cpu_cond); |
833 | c7f0f3b1 | Anthony Liguori | |
834 | 4917cf44 | Andreas Färber | current_cpu = cpu; |
835 | c7f0f3b1 | Anthony Liguori | while (1) { |
836 | 4917cf44 | Andreas Färber | current_cpu = NULL;
|
837 | c7f0f3b1 | Anthony Liguori | qemu_mutex_unlock_iothread(); |
838 | c7f0f3b1 | Anthony Liguori | do {
|
839 | c7f0f3b1 | Anthony Liguori | int sig;
|
840 | c7f0f3b1 | Anthony Liguori | r = sigwait(&waitset, &sig); |
841 | c7f0f3b1 | Anthony Liguori | } while (r == -1 && (errno == EAGAIN || errno == EINTR)); |
842 | c7f0f3b1 | Anthony Liguori | if (r == -1) { |
843 | c7f0f3b1 | Anthony Liguori | perror("sigwait");
|
844 | c7f0f3b1 | Anthony Liguori | exit(1);
|
845 | c7f0f3b1 | Anthony Liguori | } |
846 | c7f0f3b1 | Anthony Liguori | qemu_mutex_lock_iothread(); |
847 | 4917cf44 | Andreas Färber | current_cpu = cpu; |
848 | 509a0d78 | Andreas Färber | qemu_wait_io_event_common(cpu); |
849 | c7f0f3b1 | Anthony Liguori | } |
850 | c7f0f3b1 | Anthony Liguori | |
851 | c7f0f3b1 | Anthony Liguori | return NULL; |
852 | c7f0f3b1 | Anthony Liguori | #endif
|
853 | c7f0f3b1 | Anthony Liguori | } |
854 | c7f0f3b1 | Anthony Liguori | |
855 | bdb7ca67 | Jan Kiszka | static void tcg_exec_all(void); |
856 | bdb7ca67 | Jan Kiszka | |
857 | 7e97cd88 | Jan Kiszka | static void *qemu_tcg_cpu_thread_fn(void *arg) |
858 | 296af7c9 | Blue Swirl | { |
859 | c3586ba7 | Andreas Färber | CPUState *cpu = arg; |
860 | 296af7c9 | Blue Swirl | |
861 | 55f8d6ac | Jan Kiszka | qemu_tcg_init_cpu_signals(); |
862 | 814e612e | Andreas Färber | qemu_thread_get_self(cpu->thread); |
863 | 296af7c9 | Blue Swirl | |
864 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
865 | 38fcbd3f | Andreas Färber | CPU_FOREACH(cpu) { |
866 | 38fcbd3f | Andreas Färber | cpu->thread_id = qemu_get_thread_id(); |
867 | 38fcbd3f | Andreas Färber | cpu->created = true;
|
868 | 38fcbd3f | Andreas Färber | } |
869 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_cpu_cond); |
870 | 296af7c9 | Blue Swirl | |
871 | fa7d1867 | Jan Kiszka | /* wait for initial kick-off after machine start */
|
872 | bdc44640 | Andreas Färber | while (QTAILQ_FIRST(&cpus)->stopped) {
|
873 | fa7d1867 | Jan Kiszka | qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); |
874 | 8e564b4e | Jan Kiszka | |
875 | 8e564b4e | Jan Kiszka | /* process any pending work */
|
876 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
877 | 182735ef | Andreas Färber | qemu_wait_io_event_common(cpu); |
878 | 8e564b4e | Jan Kiszka | } |
879 | 0ab07c62 | Jan Kiszka | } |
880 | 296af7c9 | Blue Swirl | |
881 | 296af7c9 | Blue Swirl | while (1) { |
882 | bdb7ca67 | Jan Kiszka | tcg_exec_all(); |
883 | ac70aafc | Alex Bligh | |
884 | ac70aafc | Alex Bligh | if (use_icount) {
|
885 | 40daca54 | Alex Bligh | int64_t deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
886 | ac70aafc | Alex Bligh | |
887 | ac70aafc | Alex Bligh | if (deadline == 0) { |
888 | 40daca54 | Alex Bligh | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
889 | ac70aafc | Alex Bligh | } |
890 | 3b2319a3 | Paolo Bonzini | } |
891 | 6cabe1f3 | Jan Kiszka | qemu_tcg_wait_io_event(); |
892 | 296af7c9 | Blue Swirl | } |
893 | 296af7c9 | Blue Swirl | |
894 | 296af7c9 | Blue Swirl | return NULL; |
895 | 296af7c9 | Blue Swirl | } |
896 | 296af7c9 | Blue Swirl | |
897 | 2ff09a40 | Andreas Färber | static void qemu_cpu_kick_thread(CPUState *cpu) |
898 | cc015e9a | Paolo Bonzini | { |
899 | cc015e9a | Paolo Bonzini | #ifndef _WIN32
|
900 | cc015e9a | Paolo Bonzini | int err;
|
901 | cc015e9a | Paolo Bonzini | |
902 | 814e612e | Andreas Färber | err = pthread_kill(cpu->thread->thread, SIG_IPI); |
903 | cc015e9a | Paolo Bonzini | if (err) {
|
904 | cc015e9a | Paolo Bonzini | fprintf(stderr, "qemu:%s: %s", __func__, strerror(err));
|
905 | cc015e9a | Paolo Bonzini | exit(1);
|
906 | cc015e9a | Paolo Bonzini | } |
907 | cc015e9a | Paolo Bonzini | #else /* _WIN32 */ |
908 | 60e82579 | Andreas Färber | if (!qemu_cpu_is_self(cpu)) {
|
909 | ed9164a3 | Olivier Hainque | CONTEXT tcgContext; |
910 | ed9164a3 | Olivier Hainque | |
911 | ed9164a3 | Olivier Hainque | if (SuspendThread(cpu->hThread) == (DWORD)-1) { |
912 | 7f1721df | Stefan Weil | fprintf(stderr, "qemu:%s: GetLastError:%lu\n", __func__,
|
913 | ed9164a3 | Olivier Hainque | GetLastError()); |
914 | ed9164a3 | Olivier Hainque | exit(1);
|
915 | ed9164a3 | Olivier Hainque | } |
916 | ed9164a3 | Olivier Hainque | |
917 | ed9164a3 | Olivier Hainque | /* On multi-core systems, we are not sure that the thread is actually
|
918 | ed9164a3 | Olivier Hainque | * suspended until we can get the context.
|
919 | ed9164a3 | Olivier Hainque | */
|
920 | ed9164a3 | Olivier Hainque | tcgContext.ContextFlags = CONTEXT_CONTROL; |
921 | ed9164a3 | Olivier Hainque | while (GetThreadContext(cpu->hThread, &tcgContext) != 0) { |
922 | ed9164a3 | Olivier Hainque | continue;
|
923 | ed9164a3 | Olivier Hainque | } |
924 | ed9164a3 | Olivier Hainque | |
925 | cc015e9a | Paolo Bonzini | cpu_signal(0);
|
926 | ed9164a3 | Olivier Hainque | |
927 | ed9164a3 | Olivier Hainque | if (ResumeThread(cpu->hThread) == (DWORD)-1) { |
928 | 7f1721df | Stefan Weil | fprintf(stderr, "qemu:%s: GetLastError:%lu\n", __func__,
|
929 | ed9164a3 | Olivier Hainque | GetLastError()); |
930 | ed9164a3 | Olivier Hainque | exit(1);
|
931 | ed9164a3 | Olivier Hainque | } |
932 | cc015e9a | Paolo Bonzini | } |
933 | cc015e9a | Paolo Bonzini | #endif
|
934 | cc015e9a | Paolo Bonzini | } |
935 | cc015e9a | Paolo Bonzini | |
936 | c08d7424 | Andreas Färber | void qemu_cpu_kick(CPUState *cpu)
|
937 | 296af7c9 | Blue Swirl | { |
938 | f5c121b8 | Andreas Färber | qemu_cond_broadcast(cpu->halt_cond); |
939 | 216fc9a4 | Andreas Färber | if (!tcg_enabled() && !cpu->thread_kicked) {
|
940 | 2ff09a40 | Andreas Färber | qemu_cpu_kick_thread(cpu); |
941 | 216fc9a4 | Andreas Färber | cpu->thread_kicked = true;
|
942 | aa2c364b | Jan Kiszka | } |
943 | 296af7c9 | Blue Swirl | } |
944 | 296af7c9 | Blue Swirl | |
945 | 46d62fac | Jan Kiszka | void qemu_cpu_kick_self(void) |
946 | 296af7c9 | Blue Swirl | { |
947 | b55c22c6 | Paolo Bonzini | #ifndef _WIN32
|
948 | 4917cf44 | Andreas Färber | assert(current_cpu); |
949 | 296af7c9 | Blue Swirl | |
950 | 4917cf44 | Andreas Färber | if (!current_cpu->thread_kicked) {
|
951 | 4917cf44 | Andreas Färber | qemu_cpu_kick_thread(current_cpu); |
952 | 4917cf44 | Andreas Färber | current_cpu->thread_kicked = true;
|
953 | 296af7c9 | Blue Swirl | } |
954 | b55c22c6 | Paolo Bonzini | #else
|
955 | b55c22c6 | Paolo Bonzini | abort(); |
956 | b55c22c6 | Paolo Bonzini | #endif
|
957 | 296af7c9 | Blue Swirl | } |
958 | 296af7c9 | Blue Swirl | |
959 | 60e82579 | Andreas Färber | bool qemu_cpu_is_self(CPUState *cpu)
|
960 | 296af7c9 | Blue Swirl | { |
961 | 814e612e | Andreas Färber | return qemu_thread_is_self(cpu->thread);
|
962 | 296af7c9 | Blue Swirl | } |
963 | 296af7c9 | Blue Swirl | |
964 | aa723c23 | Juan Quintela | static bool qemu_in_vcpu_thread(void) |
965 | aa723c23 | Juan Quintela | { |
966 | 4917cf44 | Andreas Färber | return current_cpu && qemu_cpu_is_self(current_cpu);
|
967 | aa723c23 | Juan Quintela | } |
968 | aa723c23 | Juan Quintela | |
969 | 296af7c9 | Blue Swirl | void qemu_mutex_lock_iothread(void) |
970 | 296af7c9 | Blue Swirl | { |
971 | c7f0f3b1 | Anthony Liguori | if (!tcg_enabled()) {
|
972 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
973 | 1a28cac3 | Marcelo Tosatti | } else {
|
974 | 46daff13 | Paolo Bonzini | iothread_requesting_mutex = true;
|
975 | 1a28cac3 | Marcelo Tosatti | if (qemu_mutex_trylock(&qemu_global_mutex)) {
|
976 | 182735ef | Andreas Färber | qemu_cpu_kick_thread(first_cpu); |
977 | 1a28cac3 | Marcelo Tosatti | qemu_mutex_lock(&qemu_global_mutex); |
978 | 1a28cac3 | Marcelo Tosatti | } |
979 | 46daff13 | Paolo Bonzini | iothread_requesting_mutex = false;
|
980 | 46daff13 | Paolo Bonzini | qemu_cond_broadcast(&qemu_io_proceeded_cond); |
981 | 1a28cac3 | Marcelo Tosatti | } |
982 | 296af7c9 | Blue Swirl | } |
983 | 296af7c9 | Blue Swirl | |
984 | 296af7c9 | Blue Swirl | void qemu_mutex_unlock_iothread(void) |
985 | 296af7c9 | Blue Swirl | { |
986 | 296af7c9 | Blue Swirl | qemu_mutex_unlock(&qemu_global_mutex); |
987 | 296af7c9 | Blue Swirl | } |
988 | 296af7c9 | Blue Swirl | |
989 | 296af7c9 | Blue Swirl | static int all_vcpus_paused(void) |
990 | 296af7c9 | Blue Swirl | { |
991 | bdc44640 | Andreas Färber | CPUState *cpu; |
992 | 296af7c9 | Blue Swirl | |
993 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
994 | 182735ef | Andreas Färber | if (!cpu->stopped) {
|
995 | 296af7c9 | Blue Swirl | return 0; |
996 | 0ab07c62 | Jan Kiszka | } |
997 | 296af7c9 | Blue Swirl | } |
998 | 296af7c9 | Blue Swirl | |
999 | 296af7c9 | Blue Swirl | return 1; |
1000 | 296af7c9 | Blue Swirl | } |
1001 | 296af7c9 | Blue Swirl | |
1002 | 296af7c9 | Blue Swirl | void pause_all_vcpus(void) |
1003 | 296af7c9 | Blue Swirl | { |
1004 | bdc44640 | Andreas Färber | CPUState *cpu; |
1005 | 296af7c9 | Blue Swirl | |
1006 | 40daca54 | Alex Bligh | qemu_clock_enable(QEMU_CLOCK_VIRTUAL, false);
|
1007 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1008 | 182735ef | Andreas Färber | cpu->stop = true;
|
1009 | 182735ef | Andreas Färber | qemu_cpu_kick(cpu); |
1010 | 296af7c9 | Blue Swirl | } |
1011 | 296af7c9 | Blue Swirl | |
1012 | aa723c23 | Juan Quintela | if (qemu_in_vcpu_thread()) {
|
1013 | d798e974 | Jan Kiszka | cpu_stop_current(); |
1014 | d798e974 | Jan Kiszka | if (!kvm_enabled()) {
|
1015 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1016 | 182735ef | Andreas Färber | cpu->stop = false;
|
1017 | 182735ef | Andreas Färber | cpu->stopped = true;
|
1018 | d798e974 | Jan Kiszka | } |
1019 | d798e974 | Jan Kiszka | return;
|
1020 | d798e974 | Jan Kiszka | } |
1021 | d798e974 | Jan Kiszka | } |
1022 | d798e974 | Jan Kiszka | |
1023 | 296af7c9 | Blue Swirl | while (!all_vcpus_paused()) {
|
1024 | be7d6c57 | Paolo Bonzini | qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex); |
1025 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1026 | 182735ef | Andreas Färber | qemu_cpu_kick(cpu); |
1027 | 296af7c9 | Blue Swirl | } |
1028 | 296af7c9 | Blue Swirl | } |
1029 | 296af7c9 | Blue Swirl | } |
1030 | 296af7c9 | Blue Swirl | |
1031 | 2993683b | Igor Mammedov | void cpu_resume(CPUState *cpu)
|
1032 | 2993683b | Igor Mammedov | { |
1033 | 2993683b | Igor Mammedov | cpu->stop = false;
|
1034 | 2993683b | Igor Mammedov | cpu->stopped = false;
|
1035 | 2993683b | Igor Mammedov | qemu_cpu_kick(cpu); |
1036 | 2993683b | Igor Mammedov | } |
1037 | 2993683b | Igor Mammedov | |
1038 | 296af7c9 | Blue Swirl | void resume_all_vcpus(void) |
1039 | 296af7c9 | Blue Swirl | { |
1040 | bdc44640 | Andreas Färber | CPUState *cpu; |
1041 | 296af7c9 | Blue Swirl | |
1042 | 40daca54 | Alex Bligh | qemu_clock_enable(QEMU_CLOCK_VIRTUAL, true);
|
1043 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1044 | 182735ef | Andreas Färber | cpu_resume(cpu); |
1045 | 296af7c9 | Blue Swirl | } |
1046 | 296af7c9 | Blue Swirl | } |
1047 | 296af7c9 | Blue Swirl | |
1048 | e5ab30a2 | Andreas Färber | static void qemu_tcg_init_vcpu(CPUState *cpu) |
1049 | 296af7c9 | Blue Swirl | { |
1050 | 296af7c9 | Blue Swirl | /* share a single thread for all cpus with TCG */
|
1051 | 296af7c9 | Blue Swirl | if (!tcg_cpu_thread) {
|
1052 | 814e612e | Andreas Färber | cpu->thread = g_malloc0(sizeof(QemuThread));
|
1053 | f5c121b8 | Andreas Färber | cpu->halt_cond = g_malloc0(sizeof(QemuCond));
|
1054 | f5c121b8 | Andreas Färber | qemu_cond_init(cpu->halt_cond); |
1055 | f5c121b8 | Andreas Färber | tcg_halt_cond = cpu->halt_cond; |
1056 | c3586ba7 | Andreas Färber | qemu_thread_create(cpu->thread, qemu_tcg_cpu_thread_fn, cpu, |
1057 | 1ecf47bf | Paolo Bonzini | QEMU_THREAD_JOINABLE); |
1058 | 1ecf47bf | Paolo Bonzini | #ifdef _WIN32
|
1059 | 814e612e | Andreas Färber | cpu->hThread = qemu_thread_get_handle(cpu->thread); |
1060 | 1ecf47bf | Paolo Bonzini | #endif
|
1061 | 61a46217 | Andreas Färber | while (!cpu->created) {
|
1062 | 18a85728 | Paolo Bonzini | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
1063 | 0ab07c62 | Jan Kiszka | } |
1064 | 814e612e | Andreas Färber | tcg_cpu_thread = cpu->thread; |
1065 | 296af7c9 | Blue Swirl | } else {
|
1066 | 814e612e | Andreas Färber | cpu->thread = tcg_cpu_thread; |
1067 | f5c121b8 | Andreas Färber | cpu->halt_cond = tcg_halt_cond; |
1068 | 296af7c9 | Blue Swirl | } |
1069 | 296af7c9 | Blue Swirl | } |
1070 | 296af7c9 | Blue Swirl | |
1071 | 48a106bd | Andreas Färber | static void qemu_kvm_start_vcpu(CPUState *cpu) |
1072 | 296af7c9 | Blue Swirl | { |
1073 | 814e612e | Andreas Färber | cpu->thread = g_malloc0(sizeof(QemuThread));
|
1074 | f5c121b8 | Andreas Färber | cpu->halt_cond = g_malloc0(sizeof(QemuCond));
|
1075 | f5c121b8 | Andreas Färber | qemu_cond_init(cpu->halt_cond); |
1076 | 48a106bd | Andreas Färber | qemu_thread_create(cpu->thread, qemu_kvm_cpu_thread_fn, cpu, |
1077 | 1ecf47bf | Paolo Bonzini | QEMU_THREAD_JOINABLE); |
1078 | 61a46217 | Andreas Färber | while (!cpu->created) {
|
1079 | 18a85728 | Paolo Bonzini | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
1080 | 0ab07c62 | Jan Kiszka | } |
1081 | 296af7c9 | Blue Swirl | } |
1082 | 296af7c9 | Blue Swirl | |
1083 | 10a9021d | Andreas Färber | static void qemu_dummy_start_vcpu(CPUState *cpu) |
1084 | c7f0f3b1 | Anthony Liguori | { |
1085 | 814e612e | Andreas Färber | cpu->thread = g_malloc0(sizeof(QemuThread));
|
1086 | f5c121b8 | Andreas Färber | cpu->halt_cond = g_malloc0(sizeof(QemuCond));
|
1087 | f5c121b8 | Andreas Färber | qemu_cond_init(cpu->halt_cond); |
1088 | 10a9021d | Andreas Färber | qemu_thread_create(cpu->thread, qemu_dummy_cpu_thread_fn, cpu, |
1089 | c7f0f3b1 | Anthony Liguori | QEMU_THREAD_JOINABLE); |
1090 | 61a46217 | Andreas Färber | while (!cpu->created) {
|
1091 | c7f0f3b1 | Anthony Liguori | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
1092 | c7f0f3b1 | Anthony Liguori | } |
1093 | c7f0f3b1 | Anthony Liguori | } |
1094 | c7f0f3b1 | Anthony Liguori | |
1095 | c643bed9 | Andreas Färber | void qemu_init_vcpu(CPUState *cpu)
|
1096 | 296af7c9 | Blue Swirl | { |
1097 | ce3960eb | Andreas Färber | cpu->nr_cores = smp_cores; |
1098 | ce3960eb | Andreas Färber | cpu->nr_threads = smp_threads; |
1099 | f324e766 | Andreas Färber | cpu->stopped = true;
|
1100 | 0ab07c62 | Jan Kiszka | if (kvm_enabled()) {
|
1101 | 48a106bd | Andreas Färber | qemu_kvm_start_vcpu(cpu); |
1102 | c7f0f3b1 | Anthony Liguori | } else if (tcg_enabled()) { |
1103 | e5ab30a2 | Andreas Färber | qemu_tcg_init_vcpu(cpu); |
1104 | c7f0f3b1 | Anthony Liguori | } else {
|
1105 | 10a9021d | Andreas Färber | qemu_dummy_start_vcpu(cpu); |
1106 | 0ab07c62 | Jan Kiszka | } |
1107 | 296af7c9 | Blue Swirl | } |
1108 | 296af7c9 | Blue Swirl | |
1109 | b4a3d965 | Jan Kiszka | void cpu_stop_current(void) |
1110 | 296af7c9 | Blue Swirl | { |
1111 | 4917cf44 | Andreas Färber | if (current_cpu) {
|
1112 | 4917cf44 | Andreas Färber | current_cpu->stop = false;
|
1113 | 4917cf44 | Andreas Färber | current_cpu->stopped = true;
|
1114 | 4917cf44 | Andreas Färber | cpu_exit(current_cpu); |
1115 | 67bb172f | Paolo Bonzini | qemu_cond_signal(&qemu_pause_cond); |
1116 | b4a3d965 | Jan Kiszka | } |
1117 | 296af7c9 | Blue Swirl | } |
1118 | 296af7c9 | Blue Swirl | |
1119 | 56983463 | Kevin Wolf | int vm_stop(RunState state)
|
1120 | 296af7c9 | Blue Swirl | { |
1121 | aa723c23 | Juan Quintela | if (qemu_in_vcpu_thread()) {
|
1122 | 1dfb4dd9 | Luiz Capitulino | qemu_system_vmstop_request(state); |
1123 | 296af7c9 | Blue Swirl | /*
|
1124 | 296af7c9 | Blue Swirl | * FIXME: should not return to device code in case
|
1125 | 296af7c9 | Blue Swirl | * vm_stop() has been requested.
|
1126 | 296af7c9 | Blue Swirl | */
|
1127 | b4a3d965 | Jan Kiszka | cpu_stop_current(); |
1128 | 56983463 | Kevin Wolf | return 0; |
1129 | 296af7c9 | Blue Swirl | } |
1130 | 56983463 | Kevin Wolf | |
1131 | 56983463 | Kevin Wolf | return do_vm_stop(state);
|
1132 | 296af7c9 | Blue Swirl | } |
1133 | 296af7c9 | Blue Swirl | |
1134 | 8a9236f1 | Luiz Capitulino | /* does a state transition even if the VM is already stopped,
|
1135 | 8a9236f1 | Luiz Capitulino | current state is forgotten forever */
|
1136 | 56983463 | Kevin Wolf | int vm_stop_force_state(RunState state)
|
1137 | 8a9236f1 | Luiz Capitulino | { |
1138 | 8a9236f1 | Luiz Capitulino | if (runstate_is_running()) {
|
1139 | 56983463 | Kevin Wolf | return vm_stop(state);
|
1140 | 8a9236f1 | Luiz Capitulino | } else {
|
1141 | 8a9236f1 | Luiz Capitulino | runstate_set(state); |
1142 | 594a45ce | Kevin Wolf | /* Make sure to return an error if the flush in a previous vm_stop()
|
1143 | 594a45ce | Kevin Wolf | * failed. */
|
1144 | 594a45ce | Kevin Wolf | return bdrv_flush_all();
|
1145 | 8a9236f1 | Luiz Capitulino | } |
1146 | 8a9236f1 | Luiz Capitulino | } |
1147 | 8a9236f1 | Luiz Capitulino | |
1148 | 9349b4f9 | Andreas Färber | static int tcg_cpu_exec(CPUArchState *env) |
1149 | 296af7c9 | Blue Swirl | { |
1150 | 296af7c9 | Blue Swirl | int ret;
|
1151 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
1152 | 296af7c9 | Blue Swirl | int64_t ti; |
1153 | 296af7c9 | Blue Swirl | #endif
|
1154 | 296af7c9 | Blue Swirl | |
1155 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
1156 | 296af7c9 | Blue Swirl | ti = profile_getclock(); |
1157 | 296af7c9 | Blue Swirl | #endif
|
1158 | 296af7c9 | Blue Swirl | if (use_icount) {
|
1159 | 296af7c9 | Blue Swirl | int64_t count; |
1160 | ac70aafc | Alex Bligh | int64_t deadline; |
1161 | 296af7c9 | Blue Swirl | int decr;
|
1162 | 296af7c9 | Blue Swirl | qemu_icount -= (env->icount_decr.u16.low + env->icount_extra); |
1163 | 296af7c9 | Blue Swirl | env->icount_decr.u16.low = 0;
|
1164 | 296af7c9 | Blue Swirl | env->icount_extra = 0;
|
1165 | 40daca54 | Alex Bligh | deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
1166 | ac70aafc | Alex Bligh | |
1167 | ac70aafc | Alex Bligh | /* Maintain prior (possibly buggy) behaviour where if no deadline
|
1168 | 40daca54 | Alex Bligh | * was set (as there is no QEMU_CLOCK_VIRTUAL timer) or it is more than
|
1169 | ac70aafc | Alex Bligh | * INT32_MAX nanoseconds ahead, we still use INT32_MAX
|
1170 | ac70aafc | Alex Bligh | * nanoseconds.
|
1171 | ac70aafc | Alex Bligh | */
|
1172 | ac70aafc | Alex Bligh | if ((deadline < 0) || (deadline > INT32_MAX)) { |
1173 | ac70aafc | Alex Bligh | deadline = INT32_MAX; |
1174 | ac70aafc | Alex Bligh | } |
1175 | ac70aafc | Alex Bligh | |
1176 | ac70aafc | Alex Bligh | count = qemu_icount_round(deadline); |
1177 | 296af7c9 | Blue Swirl | qemu_icount += count; |
1178 | 296af7c9 | Blue Swirl | decr = (count > 0xffff) ? 0xffff : count; |
1179 | 296af7c9 | Blue Swirl | count -= decr; |
1180 | 296af7c9 | Blue Swirl | env->icount_decr.u16.low = decr; |
1181 | 296af7c9 | Blue Swirl | env->icount_extra = count; |
1182 | 296af7c9 | Blue Swirl | } |
1183 | 296af7c9 | Blue Swirl | ret = cpu_exec(env); |
1184 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
1185 | 296af7c9 | Blue Swirl | qemu_time += profile_getclock() - ti; |
1186 | 296af7c9 | Blue Swirl | #endif
|
1187 | 296af7c9 | Blue Swirl | if (use_icount) {
|
1188 | 296af7c9 | Blue Swirl | /* Fold pending instructions back into the
|
1189 | 296af7c9 | Blue Swirl | instruction counter, and clear the interrupt flag. */
|
1190 | 296af7c9 | Blue Swirl | qemu_icount -= (env->icount_decr.u16.low |
1191 | 296af7c9 | Blue Swirl | + env->icount_extra); |
1192 | 296af7c9 | Blue Swirl | env->icount_decr.u32 = 0;
|
1193 | 296af7c9 | Blue Swirl | env->icount_extra = 0;
|
1194 | 296af7c9 | Blue Swirl | } |
1195 | 296af7c9 | Blue Swirl | return ret;
|
1196 | 296af7c9 | Blue Swirl | } |
1197 | 296af7c9 | Blue Swirl | |
1198 | bdb7ca67 | Jan Kiszka | static void tcg_exec_all(void) |
1199 | 296af7c9 | Blue Swirl | { |
1200 | 9a36085b | Jan Kiszka | int r;
|
1201 | 9a36085b | Jan Kiszka | |
1202 | 40daca54 | Alex Bligh | /* Account partial waits to QEMU_CLOCK_VIRTUAL. */
|
1203 | 40daca54 | Alex Bligh | qemu_clock_warp(QEMU_CLOCK_VIRTUAL); |
1204 | ab33fcda | Paolo Bonzini | |
1205 | 0ab07c62 | Jan Kiszka | if (next_cpu == NULL) { |
1206 | 296af7c9 | Blue Swirl | next_cpu = first_cpu; |
1207 | 0ab07c62 | Jan Kiszka | } |
1208 | bdc44640 | Andreas Färber | for (; next_cpu != NULL && !exit_request; next_cpu = CPU_NEXT(next_cpu)) { |
1209 | 182735ef | Andreas Färber | CPUState *cpu = next_cpu; |
1210 | 182735ef | Andreas Färber | CPUArchState *env = cpu->env_ptr; |
1211 | 296af7c9 | Blue Swirl | |
1212 | 40daca54 | Alex Bligh | qemu_clock_enable(QEMU_CLOCK_VIRTUAL, |
1213 | ed2803da | Andreas Färber | (cpu->singlestep_enabled & SSTEP_NOTIMER) == 0);
|
1214 | 296af7c9 | Blue Swirl | |
1215 | a1fcaa73 | Andreas Färber | if (cpu_can_run(cpu)) {
|
1216 | bdb7ca67 | Jan Kiszka | r = tcg_cpu_exec(env); |
1217 | 9a36085b | Jan Kiszka | if (r == EXCP_DEBUG) {
|
1218 | 91325046 | Andreas Färber | cpu_handle_guest_debug(cpu); |
1219 | 3c638d06 | Jan Kiszka | break;
|
1220 | 3c638d06 | Jan Kiszka | } |
1221 | f324e766 | Andreas Färber | } else if (cpu->stop || cpu->stopped) { |
1222 | 296af7c9 | Blue Swirl | break;
|
1223 | 296af7c9 | Blue Swirl | } |
1224 | 296af7c9 | Blue Swirl | } |
1225 | c629a4bc | Jan Kiszka | exit_request = 0;
|
1226 | 296af7c9 | Blue Swirl | } |
1227 | 296af7c9 | Blue Swirl | |
1228 | 296af7c9 | Blue Swirl | void set_numa_modes(void) |
1229 | 296af7c9 | Blue Swirl | { |
1230 | 1b1ed8dc | Andreas Färber | CPUState *cpu; |
1231 | 296af7c9 | Blue Swirl | int i;
|
1232 | 296af7c9 | Blue Swirl | |
1233 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1234 | 296af7c9 | Blue Swirl | for (i = 0; i < nb_numa_nodes; i++) { |
1235 | 55e5c285 | Andreas Färber | if (test_bit(cpu->cpu_index, node_cpumask[i])) {
|
1236 | 1b1ed8dc | Andreas Färber | cpu->numa_node = i; |
1237 | 296af7c9 | Blue Swirl | } |
1238 | 296af7c9 | Blue Swirl | } |
1239 | 296af7c9 | Blue Swirl | } |
1240 | 296af7c9 | Blue Swirl | } |
1241 | 296af7c9 | Blue Swirl | |
1242 | 9a78eead | Stefan Weil | void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg) |
1243 | 262353cb | Blue Swirl | { |
1244 | 262353cb | Blue Swirl | /* XXX: implement xxx_cpu_list for targets that still miss it */
|
1245 | e916cbf8 | Peter Maydell | #if defined(cpu_list)
|
1246 | e916cbf8 | Peter Maydell | cpu_list(f, cpu_fprintf); |
1247 | 262353cb | Blue Swirl | #endif
|
1248 | 262353cb | Blue Swirl | } |
1249 | de0b36b6 | Luiz Capitulino | |
1250 | de0b36b6 | Luiz Capitulino | CpuInfoList *qmp_query_cpus(Error **errp) |
1251 | de0b36b6 | Luiz Capitulino | { |
1252 | de0b36b6 | Luiz Capitulino | CpuInfoList *head = NULL, *cur_item = NULL; |
1253 | 182735ef | Andreas Färber | CPUState *cpu; |
1254 | de0b36b6 | Luiz Capitulino | |
1255 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1256 | de0b36b6 | Luiz Capitulino | CpuInfoList *info; |
1257 | 182735ef | Andreas Färber | #if defined(TARGET_I386)
|
1258 | 182735ef | Andreas Färber | X86CPU *x86_cpu = X86_CPU(cpu); |
1259 | 182735ef | Andreas Färber | CPUX86State *env = &x86_cpu->env; |
1260 | 182735ef | Andreas Färber | #elif defined(TARGET_PPC)
|
1261 | 182735ef | Andreas Färber | PowerPCCPU *ppc_cpu = POWERPC_CPU(cpu); |
1262 | 182735ef | Andreas Färber | CPUPPCState *env = &ppc_cpu->env; |
1263 | 182735ef | Andreas Färber | #elif defined(TARGET_SPARC)
|
1264 | 182735ef | Andreas Färber | SPARCCPU *sparc_cpu = SPARC_CPU(cpu); |
1265 | 182735ef | Andreas Färber | CPUSPARCState *env = &sparc_cpu->env; |
1266 | 182735ef | Andreas Färber | #elif defined(TARGET_MIPS)
|
1267 | 182735ef | Andreas Färber | MIPSCPU *mips_cpu = MIPS_CPU(cpu); |
1268 | 182735ef | Andreas Färber | CPUMIPSState *env = &mips_cpu->env; |
1269 | 182735ef | Andreas Färber | #endif
|
1270 | de0b36b6 | Luiz Capitulino | |
1271 | cb446eca | Andreas Färber | cpu_synchronize_state(cpu); |
1272 | de0b36b6 | Luiz Capitulino | |
1273 | de0b36b6 | Luiz Capitulino | info = g_malloc0(sizeof(*info));
|
1274 | de0b36b6 | Luiz Capitulino | info->value = g_malloc0(sizeof(*info->value));
|
1275 | 55e5c285 | Andreas Färber | info->value->CPU = cpu->cpu_index; |
1276 | 182735ef | Andreas Färber | info->value->current = (cpu == first_cpu); |
1277 | 259186a7 | Andreas Färber | info->value->halted = cpu->halted; |
1278 | 9f09e18a | Andreas Färber | info->value->thread_id = cpu->thread_id; |
1279 | de0b36b6 | Luiz Capitulino | #if defined(TARGET_I386)
|
1280 | de0b36b6 | Luiz Capitulino | info->value->has_pc = true;
|
1281 | de0b36b6 | Luiz Capitulino | info->value->pc = env->eip + env->segs[R_CS].base; |
1282 | de0b36b6 | Luiz Capitulino | #elif defined(TARGET_PPC)
|
1283 | de0b36b6 | Luiz Capitulino | info->value->has_nip = true;
|
1284 | de0b36b6 | Luiz Capitulino | info->value->nip = env->nip; |
1285 | de0b36b6 | Luiz Capitulino | #elif defined(TARGET_SPARC)
|
1286 | de0b36b6 | Luiz Capitulino | info->value->has_pc = true;
|
1287 | de0b36b6 | Luiz Capitulino | info->value->pc = env->pc; |
1288 | de0b36b6 | Luiz Capitulino | info->value->has_npc = true;
|
1289 | de0b36b6 | Luiz Capitulino | info->value->npc = env->npc; |
1290 | de0b36b6 | Luiz Capitulino | #elif defined(TARGET_MIPS)
|
1291 | de0b36b6 | Luiz Capitulino | info->value->has_PC = true;
|
1292 | de0b36b6 | Luiz Capitulino | info->value->PC = env->active_tc.PC; |
1293 | de0b36b6 | Luiz Capitulino | #endif
|
1294 | de0b36b6 | Luiz Capitulino | |
1295 | de0b36b6 | Luiz Capitulino | /* XXX: waiting for the qapi to support GSList */
|
1296 | de0b36b6 | Luiz Capitulino | if (!cur_item) {
|
1297 | de0b36b6 | Luiz Capitulino | head = cur_item = info; |
1298 | de0b36b6 | Luiz Capitulino | } else {
|
1299 | de0b36b6 | Luiz Capitulino | cur_item->next = info; |
1300 | de0b36b6 | Luiz Capitulino | cur_item = info; |
1301 | de0b36b6 | Luiz Capitulino | } |
1302 | de0b36b6 | Luiz Capitulino | } |
1303 | de0b36b6 | Luiz Capitulino | |
1304 | de0b36b6 | Luiz Capitulino | return head;
|
1305 | de0b36b6 | Luiz Capitulino | } |
1306 | 0cfd6a9a | Luiz Capitulino | |
1307 | 0cfd6a9a | Luiz Capitulino | void qmp_memsave(int64_t addr, int64_t size, const char *filename, |
1308 | 0cfd6a9a | Luiz Capitulino | bool has_cpu, int64_t cpu_index, Error **errp)
|
1309 | 0cfd6a9a | Luiz Capitulino | { |
1310 | 0cfd6a9a | Luiz Capitulino | FILE *f; |
1311 | 0cfd6a9a | Luiz Capitulino | uint32_t l; |
1312 | 55e5c285 | Andreas Färber | CPUState *cpu; |
1313 | 0cfd6a9a | Luiz Capitulino | uint8_t buf[1024];
|
1314 | 0cfd6a9a | Luiz Capitulino | |
1315 | 0cfd6a9a | Luiz Capitulino | if (!has_cpu) {
|
1316 | 0cfd6a9a | Luiz Capitulino | cpu_index = 0;
|
1317 | 0cfd6a9a | Luiz Capitulino | } |
1318 | 0cfd6a9a | Luiz Capitulino | |
1319 | 151d1322 | Andreas Färber | cpu = qemu_get_cpu(cpu_index); |
1320 | 151d1322 | Andreas Färber | if (cpu == NULL) { |
1321 | 0cfd6a9a | Luiz Capitulino | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
|
1322 | 0cfd6a9a | Luiz Capitulino | "a CPU number");
|
1323 | 0cfd6a9a | Luiz Capitulino | return;
|
1324 | 0cfd6a9a | Luiz Capitulino | } |
1325 | 0cfd6a9a | Luiz Capitulino | |
1326 | 0cfd6a9a | Luiz Capitulino | f = fopen(filename, "wb");
|
1327 | 0cfd6a9a | Luiz Capitulino | if (!f) {
|
1328 | 618da851 | Luiz Capitulino | error_setg_file_open(errp, errno, filename); |
1329 | 0cfd6a9a | Luiz Capitulino | return;
|
1330 | 0cfd6a9a | Luiz Capitulino | } |
1331 | 0cfd6a9a | Luiz Capitulino | |
1332 | 0cfd6a9a | Luiz Capitulino | while (size != 0) { |
1333 | 0cfd6a9a | Luiz Capitulino | l = sizeof(buf);
|
1334 | 0cfd6a9a | Luiz Capitulino | if (l > size)
|
1335 | 0cfd6a9a | Luiz Capitulino | l = size; |
1336 | f17ec444 | Andreas Färber | cpu_memory_rw_debug(cpu, addr, buf, l, 0);
|
1337 | 0cfd6a9a | Luiz Capitulino | if (fwrite(buf, 1, l, f) != l) { |
1338 | 0cfd6a9a | Luiz Capitulino | error_set(errp, QERR_IO_ERROR); |
1339 | 0cfd6a9a | Luiz Capitulino | goto exit;
|
1340 | 0cfd6a9a | Luiz Capitulino | } |
1341 | 0cfd6a9a | Luiz Capitulino | addr += l; |
1342 | 0cfd6a9a | Luiz Capitulino | size -= l; |
1343 | 0cfd6a9a | Luiz Capitulino | } |
1344 | 0cfd6a9a | Luiz Capitulino | |
1345 | 0cfd6a9a | Luiz Capitulino | exit:
|
1346 | 0cfd6a9a | Luiz Capitulino | fclose(f); |
1347 | 0cfd6a9a | Luiz Capitulino | } |
1348 | 6d3962bf | Luiz Capitulino | |
1349 | 6d3962bf | Luiz Capitulino | void qmp_pmemsave(int64_t addr, int64_t size, const char *filename, |
1350 | 6d3962bf | Luiz Capitulino | Error **errp) |
1351 | 6d3962bf | Luiz Capitulino | { |
1352 | 6d3962bf | Luiz Capitulino | FILE *f; |
1353 | 6d3962bf | Luiz Capitulino | uint32_t l; |
1354 | 6d3962bf | Luiz Capitulino | uint8_t buf[1024];
|
1355 | 6d3962bf | Luiz Capitulino | |
1356 | 6d3962bf | Luiz Capitulino | f = fopen(filename, "wb");
|
1357 | 6d3962bf | Luiz Capitulino | if (!f) {
|
1358 | 618da851 | Luiz Capitulino | error_setg_file_open(errp, errno, filename); |
1359 | 6d3962bf | Luiz Capitulino | return;
|
1360 | 6d3962bf | Luiz Capitulino | } |
1361 | 6d3962bf | Luiz Capitulino | |
1362 | 6d3962bf | Luiz Capitulino | while (size != 0) { |
1363 | 6d3962bf | Luiz Capitulino | l = sizeof(buf);
|
1364 | 6d3962bf | Luiz Capitulino | if (l > size)
|
1365 | 6d3962bf | Luiz Capitulino | l = size; |
1366 | 6d3962bf | Luiz Capitulino | cpu_physical_memory_rw(addr, buf, l, 0);
|
1367 | 6d3962bf | Luiz Capitulino | if (fwrite(buf, 1, l, f) != l) { |
1368 | 6d3962bf | Luiz Capitulino | error_set(errp, QERR_IO_ERROR); |
1369 | 6d3962bf | Luiz Capitulino | goto exit;
|
1370 | 6d3962bf | Luiz Capitulino | } |
1371 | 6d3962bf | Luiz Capitulino | addr += l; |
1372 | 6d3962bf | Luiz Capitulino | size -= l; |
1373 | 6d3962bf | Luiz Capitulino | } |
1374 | 6d3962bf | Luiz Capitulino | |
1375 | 6d3962bf | Luiz Capitulino | exit:
|
1376 | 6d3962bf | Luiz Capitulino | fclose(f); |
1377 | 6d3962bf | Luiz Capitulino | } |
1378 | ab49ab5c | Luiz Capitulino | |
1379 | ab49ab5c | Luiz Capitulino | void qmp_inject_nmi(Error **errp)
|
1380 | ab49ab5c | Luiz Capitulino | { |
1381 | ab49ab5c | Luiz Capitulino | #if defined(TARGET_I386)
|
1382 | 182735ef | Andreas Färber | CPUState *cs; |
1383 | 182735ef | Andreas Färber | |
1384 | bdc44640 | Andreas Färber | CPU_FOREACH(cs) { |
1385 | 182735ef | Andreas Färber | X86CPU *cpu = X86_CPU(cs); |
1386 | 182735ef | Andreas Färber | CPUX86State *env = &cpu->env; |
1387 | ab49ab5c | Luiz Capitulino | |
1388 | 02c09195 | Jan Kiszka | if (!env->apic_state) {
|
1389 | 182735ef | Andreas Färber | cpu_interrupt(cs, CPU_INTERRUPT_NMI); |
1390 | 02c09195 | Jan Kiszka | } else {
|
1391 | 02c09195 | Jan Kiszka | apic_deliver_nmi(env->apic_state); |
1392 | 02c09195 | Jan Kiszka | } |
1393 | ab49ab5c | Luiz Capitulino | } |
1394 | 7f7f9752 | Eugene (jno) Dvurechenski | #elif defined(TARGET_S390X)
|
1395 | 7f7f9752 | Eugene (jno) Dvurechenski | CPUState *cs; |
1396 | 7f7f9752 | Eugene (jno) Dvurechenski | S390CPU *cpu; |
1397 | 7f7f9752 | Eugene (jno) Dvurechenski | |
1398 | bdc44640 | Andreas Färber | CPU_FOREACH(cs) { |
1399 | 7f7f9752 | Eugene (jno) Dvurechenski | cpu = S390_CPU(cs); |
1400 | 7f7f9752 | Eugene (jno) Dvurechenski | if (cpu->env.cpu_num == monitor_get_cpu_index()) {
|
1401 | 7f7f9752 | Eugene (jno) Dvurechenski | if (s390_cpu_restart(S390_CPU(cs)) == -1) { |
1402 | 7f7f9752 | Eugene (jno) Dvurechenski | error_set(errp, QERR_UNSUPPORTED); |
1403 | 7f7f9752 | Eugene (jno) Dvurechenski | return;
|
1404 | 7f7f9752 | Eugene (jno) Dvurechenski | } |
1405 | 7f7f9752 | Eugene (jno) Dvurechenski | break;
|
1406 | 7f7f9752 | Eugene (jno) Dvurechenski | } |
1407 | 7f7f9752 | Eugene (jno) Dvurechenski | } |
1408 | ab49ab5c | Luiz Capitulino | #else
|
1409 | ab49ab5c | Luiz Capitulino | error_set(errp, QERR_UNSUPPORTED); |
1410 | ab49ab5c | Luiz Capitulino | #endif
|
1411 | ab49ab5c | Luiz Capitulino | } |