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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 | cb365646 | Liu Ping Fan | #include "qemu/seqlock.h" |
41 | 0ff0fc19 | Jan Kiszka | |
42 | 0ff0fc19 | Jan Kiszka | #ifndef _WIN32
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43 | 1de7afc9 | Paolo Bonzini | #include "qemu/compatfd.h" |
44 | 0ff0fc19 | Jan Kiszka | #endif
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45 | 296af7c9 | Blue Swirl | |
46 | 6d9cb73c | Jan Kiszka | #ifdef CONFIG_LINUX
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47 | 6d9cb73c | Jan Kiszka | |
48 | 6d9cb73c | Jan Kiszka | #include <sys/prctl.h> |
49 | 6d9cb73c | Jan Kiszka | |
50 | c0532a76 | Marcelo Tosatti | #ifndef PR_MCE_KILL
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51 | c0532a76 | Marcelo Tosatti | #define PR_MCE_KILL 33 |
52 | c0532a76 | Marcelo Tosatti | #endif
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53 | c0532a76 | Marcelo Tosatti | |
54 | 6d9cb73c | Jan Kiszka | #ifndef PR_MCE_KILL_SET
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55 | 6d9cb73c | Jan Kiszka | #define PR_MCE_KILL_SET 1 |
56 | 6d9cb73c | Jan Kiszka | #endif
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57 | 6d9cb73c | Jan Kiszka | |
58 | 6d9cb73c | Jan Kiszka | #ifndef PR_MCE_KILL_EARLY
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59 | 6d9cb73c | Jan Kiszka | #define PR_MCE_KILL_EARLY 1 |
60 | 6d9cb73c | Jan Kiszka | #endif
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61 | 6d9cb73c | Jan Kiszka | |
62 | 6d9cb73c | Jan Kiszka | #endif /* CONFIG_LINUX */ |
63 | 6d9cb73c | Jan Kiszka | |
64 | 182735ef | Andreas Färber | static CPUState *next_cpu;
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65 | 296af7c9 | Blue Swirl | |
66 | 321bc0b2 | Tiejun Chen | bool cpu_is_stopped(CPUState *cpu)
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67 | 321bc0b2 | Tiejun Chen | { |
68 | 321bc0b2 | Tiejun Chen | return cpu->stopped || !runstate_is_running();
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69 | 321bc0b2 | Tiejun Chen | } |
70 | 321bc0b2 | Tiejun Chen | |
71 | a98ae1d8 | Andreas Färber | static bool cpu_thread_is_idle(CPUState *cpu) |
72 | ac873f1e | Peter Maydell | { |
73 | c64ca814 | Andreas Färber | if (cpu->stop || cpu->queued_work_first) {
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74 | ac873f1e | Peter Maydell | return false; |
75 | ac873f1e | Peter Maydell | } |
76 | 321bc0b2 | Tiejun Chen | if (cpu_is_stopped(cpu)) {
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77 | ac873f1e | Peter Maydell | return true; |
78 | ac873f1e | Peter Maydell | } |
79 | 259186a7 | Andreas Färber | if (!cpu->halted || qemu_cpu_has_work(cpu) ||
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80 | 215e79c0 | Alexander Graf | kvm_halt_in_kernel()) { |
81 | ac873f1e | Peter Maydell | return false; |
82 | ac873f1e | Peter Maydell | } |
83 | ac873f1e | Peter Maydell | return true; |
84 | ac873f1e | Peter Maydell | } |
85 | ac873f1e | Peter Maydell | |
86 | ac873f1e | Peter Maydell | static bool all_cpu_threads_idle(void) |
87 | ac873f1e | Peter Maydell | { |
88 | 182735ef | Andreas Färber | CPUState *cpu; |
89 | ac873f1e | Peter Maydell | |
90 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
91 | 182735ef | Andreas Färber | if (!cpu_thread_is_idle(cpu)) {
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92 | ac873f1e | Peter Maydell | return false; |
93 | ac873f1e | Peter Maydell | } |
94 | ac873f1e | Peter Maydell | } |
95 | ac873f1e | Peter Maydell | return true; |
96 | ac873f1e | Peter Maydell | } |
97 | ac873f1e | Peter Maydell | |
98 | 296af7c9 | Blue Swirl | /***********************************************************/
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99 | 946fb27c | Paolo Bonzini | /* guest cycle counter */
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100 | 946fb27c | Paolo Bonzini | |
101 | 946fb27c | Paolo Bonzini | /* Conversion factor from emulated instructions to virtual clock ticks. */
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102 | 946fb27c | Paolo Bonzini | static int icount_time_shift; |
103 | 946fb27c | Paolo Bonzini | /* Arbitrarily pick 1MIPS as the minimum allowable speed. */
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104 | 946fb27c | Paolo Bonzini | #define MAX_ICOUNT_SHIFT 10 |
105 | 946fb27c | Paolo Bonzini | /* Compensate for varying guest execution speed. */
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106 | 946fb27c | Paolo Bonzini | static int64_t qemu_icount_bias;
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107 | 946fb27c | Paolo Bonzini | static QEMUTimer *icount_rt_timer;
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108 | 946fb27c | Paolo Bonzini | static QEMUTimer *icount_vm_timer;
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109 | 946fb27c | Paolo Bonzini | static QEMUTimer *icount_warp_timer;
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110 | 946fb27c | Paolo Bonzini | static int64_t vm_clock_warp_start;
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111 | 946fb27c | Paolo Bonzini | static int64_t qemu_icount;
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112 | 946fb27c | Paolo Bonzini | |
113 | 946fb27c | Paolo Bonzini | typedef struct TimersState { |
114 | cb365646 | Liu Ping Fan | /* Protected by BQL. */
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115 | 946fb27c | Paolo Bonzini | int64_t cpu_ticks_prev; |
116 | 946fb27c | Paolo Bonzini | int64_t cpu_ticks_offset; |
117 | cb365646 | Liu Ping Fan | |
118 | cb365646 | Liu Ping Fan | /* cpu_clock_offset can be read out of BQL, so protect it with
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119 | cb365646 | Liu Ping Fan | * this lock.
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120 | cb365646 | Liu Ping Fan | */
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121 | cb365646 | Liu Ping Fan | QemuSeqLock vm_clock_seqlock; |
122 | 946fb27c | Paolo Bonzini | int64_t cpu_clock_offset; |
123 | 946fb27c | Paolo Bonzini | int32_t cpu_ticks_enabled; |
124 | 946fb27c | Paolo Bonzini | int64_t dummy; |
125 | 946fb27c | Paolo Bonzini | } TimersState; |
126 | 946fb27c | Paolo Bonzini | |
127 | d9cd4007 | Liu Ping Fan | static TimersState timers_state;
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128 | 946fb27c | Paolo Bonzini | |
129 | 946fb27c | Paolo Bonzini | /* Return the virtual CPU time, based on the instruction counter. */
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130 | 946fb27c | Paolo Bonzini | int64_t cpu_get_icount(void)
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131 | 946fb27c | Paolo Bonzini | { |
132 | 946fb27c | Paolo Bonzini | int64_t icount; |
133 | 4917cf44 | Andreas Färber | CPUState *cpu = current_cpu; |
134 | 946fb27c | Paolo Bonzini | |
135 | 946fb27c | Paolo Bonzini | icount = qemu_icount; |
136 | 4917cf44 | Andreas Färber | if (cpu) {
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137 | 4917cf44 | Andreas Färber | CPUArchState *env = cpu->env_ptr; |
138 | 946fb27c | Paolo Bonzini | if (!can_do_io(env)) {
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139 | 946fb27c | Paolo Bonzini | fprintf(stderr, "Bad clock read\n");
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140 | 946fb27c | Paolo Bonzini | } |
141 | 946fb27c | Paolo Bonzini | icount -= (env->icount_decr.u16.low + env->icount_extra); |
142 | 946fb27c | Paolo Bonzini | } |
143 | 946fb27c | Paolo Bonzini | return qemu_icount_bias + (icount << icount_time_shift);
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144 | 946fb27c | Paolo Bonzini | } |
145 | 946fb27c | Paolo Bonzini | |
146 | 946fb27c | Paolo Bonzini | /* return the host CPU cycle counter and handle stop/restart */
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147 | cb365646 | Liu Ping Fan | /* Caller must hold the BQL */
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148 | 946fb27c | Paolo Bonzini | int64_t cpu_get_ticks(void)
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149 | 946fb27c | Paolo Bonzini | { |
150 | 946fb27c | Paolo Bonzini | if (use_icount) {
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151 | 946fb27c | Paolo Bonzini | return cpu_get_icount();
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152 | 946fb27c | Paolo Bonzini | } |
153 | 946fb27c | Paolo Bonzini | if (!timers_state.cpu_ticks_enabled) {
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154 | 946fb27c | Paolo Bonzini | return timers_state.cpu_ticks_offset;
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155 | 946fb27c | Paolo Bonzini | } else {
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156 | 946fb27c | Paolo Bonzini | int64_t ticks; |
157 | 946fb27c | Paolo Bonzini | ticks = cpu_get_real_ticks(); |
158 | 946fb27c | Paolo Bonzini | if (timers_state.cpu_ticks_prev > ticks) {
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159 | 946fb27c | Paolo Bonzini | /* Note: non increasing ticks may happen if the host uses
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160 | 946fb27c | Paolo Bonzini | software suspend */
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161 | 946fb27c | Paolo Bonzini | timers_state.cpu_ticks_offset += timers_state.cpu_ticks_prev - ticks; |
162 | 946fb27c | Paolo Bonzini | } |
163 | 946fb27c | Paolo Bonzini | timers_state.cpu_ticks_prev = ticks; |
164 | 946fb27c | Paolo Bonzini | return ticks + timers_state.cpu_ticks_offset;
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165 | 946fb27c | Paolo Bonzini | } |
166 | 946fb27c | Paolo Bonzini | } |
167 | 946fb27c | Paolo Bonzini | |
168 | cb365646 | Liu Ping Fan | static int64_t cpu_get_clock_locked(void) |
169 | 946fb27c | Paolo Bonzini | { |
170 | 946fb27c | Paolo Bonzini | int64_t ti; |
171 | cb365646 | Liu Ping Fan | |
172 | 946fb27c | Paolo Bonzini | if (!timers_state.cpu_ticks_enabled) {
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173 | cb365646 | Liu Ping Fan | ti = timers_state.cpu_clock_offset; |
174 | 946fb27c | Paolo Bonzini | } else {
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175 | 946fb27c | Paolo Bonzini | ti = get_clock(); |
176 | cb365646 | Liu Ping Fan | ti += timers_state.cpu_clock_offset; |
177 | 946fb27c | Paolo Bonzini | } |
178 | cb365646 | Liu Ping Fan | |
179 | cb365646 | Liu Ping Fan | return ti;
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180 | cb365646 | Liu Ping Fan | } |
181 | cb365646 | Liu Ping Fan | |
182 | cb365646 | Liu Ping Fan | /* return the host CPU monotonic timer and handle stop/restart */
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183 | cb365646 | Liu Ping Fan | int64_t cpu_get_clock(void)
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184 | cb365646 | Liu Ping Fan | { |
185 | cb365646 | Liu Ping Fan | int64_t ti; |
186 | cb365646 | Liu Ping Fan | unsigned start;
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187 | cb365646 | Liu Ping Fan | |
188 | cb365646 | Liu Ping Fan | do {
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189 | cb365646 | Liu Ping Fan | start = seqlock_read_begin(&timers_state.vm_clock_seqlock); |
190 | cb365646 | Liu Ping Fan | ti = cpu_get_clock_locked(); |
191 | cb365646 | Liu Ping Fan | } while (seqlock_read_retry(&timers_state.vm_clock_seqlock, start));
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192 | cb365646 | Liu Ping Fan | |
193 | cb365646 | Liu Ping Fan | return ti;
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194 | 946fb27c | Paolo Bonzini | } |
195 | 946fb27c | Paolo Bonzini | |
196 | cb365646 | Liu Ping Fan | /* enable cpu_get_ticks()
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197 | cb365646 | Liu Ping Fan | * Caller must hold BQL which server as mutex for vm_clock_seqlock.
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198 | cb365646 | Liu Ping Fan | */
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199 | 946fb27c | Paolo Bonzini | void cpu_enable_ticks(void) |
200 | 946fb27c | Paolo Bonzini | { |
201 | cb365646 | Liu Ping Fan | /* Here, the really thing protected by seqlock is cpu_clock_offset. */
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202 | cb365646 | Liu Ping Fan | seqlock_write_lock(&timers_state.vm_clock_seqlock); |
203 | 946fb27c | Paolo Bonzini | if (!timers_state.cpu_ticks_enabled) {
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204 | 946fb27c | Paolo Bonzini | timers_state.cpu_ticks_offset -= cpu_get_real_ticks(); |
205 | 946fb27c | Paolo Bonzini | timers_state.cpu_clock_offset -= get_clock(); |
206 | 946fb27c | Paolo Bonzini | timers_state.cpu_ticks_enabled = 1;
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207 | 946fb27c | Paolo Bonzini | } |
208 | cb365646 | Liu Ping Fan | seqlock_write_unlock(&timers_state.vm_clock_seqlock); |
209 | 946fb27c | Paolo Bonzini | } |
210 | 946fb27c | Paolo Bonzini | |
211 | 946fb27c | Paolo Bonzini | /* disable cpu_get_ticks() : the clock is stopped. You must not call
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212 | cb365646 | Liu Ping Fan | * cpu_get_ticks() after that.
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213 | cb365646 | Liu Ping Fan | * Caller must hold BQL which server as mutex for vm_clock_seqlock.
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214 | cb365646 | Liu Ping Fan | */
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215 | 946fb27c | Paolo Bonzini | void cpu_disable_ticks(void) |
216 | 946fb27c | Paolo Bonzini | { |
217 | cb365646 | Liu Ping Fan | /* Here, the really thing protected by seqlock is cpu_clock_offset. */
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218 | cb365646 | Liu Ping Fan | seqlock_write_lock(&timers_state.vm_clock_seqlock); |
219 | 946fb27c | Paolo Bonzini | if (timers_state.cpu_ticks_enabled) {
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220 | 946fb27c | Paolo Bonzini | timers_state.cpu_ticks_offset = cpu_get_ticks(); |
221 | cb365646 | Liu Ping Fan | timers_state.cpu_clock_offset = cpu_get_clock_locked(); |
222 | 946fb27c | Paolo Bonzini | timers_state.cpu_ticks_enabled = 0;
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223 | 946fb27c | Paolo Bonzini | } |
224 | cb365646 | Liu Ping Fan | seqlock_write_unlock(&timers_state.vm_clock_seqlock); |
225 | 946fb27c | Paolo Bonzini | } |
226 | 946fb27c | Paolo Bonzini | |
227 | 946fb27c | Paolo Bonzini | /* Correlation between real and virtual time is always going to be
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228 | 946fb27c | Paolo Bonzini | fairly approximate, so ignore small variation.
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229 | 946fb27c | Paolo Bonzini | When the guest is idle real and virtual time will be aligned in
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230 | 946fb27c | Paolo Bonzini | the IO wait loop. */
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231 | 946fb27c | Paolo Bonzini | #define ICOUNT_WOBBLE (get_ticks_per_sec() / 10) |
232 | 946fb27c | Paolo Bonzini | |
233 | 946fb27c | Paolo Bonzini | static void icount_adjust(void) |
234 | 946fb27c | Paolo Bonzini | { |
235 | 946fb27c | Paolo Bonzini | int64_t cur_time; |
236 | 946fb27c | Paolo Bonzini | int64_t cur_icount; |
237 | 946fb27c | Paolo Bonzini | int64_t delta; |
238 | 946fb27c | Paolo Bonzini | static int64_t last_delta;
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239 | 468cc7cf | Paolo Bonzini | |
240 | 946fb27c | Paolo Bonzini | /* If the VM is not running, then do nothing. */
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241 | 946fb27c | Paolo Bonzini | if (!runstate_is_running()) {
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242 | 946fb27c | Paolo Bonzini | return;
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243 | 946fb27c | Paolo Bonzini | } |
244 | 468cc7cf | Paolo Bonzini | |
245 | 946fb27c | Paolo Bonzini | cur_time = cpu_get_clock(); |
246 | 468cc7cf | Paolo Bonzini | cur_icount = cpu_get_icount(); |
247 | 468cc7cf | Paolo Bonzini | |
248 | 946fb27c | Paolo Bonzini | delta = cur_icount - cur_time; |
249 | 946fb27c | Paolo Bonzini | /* FIXME: This is a very crude algorithm, somewhat prone to oscillation. */
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250 | 946fb27c | Paolo Bonzini | if (delta > 0 |
251 | 946fb27c | Paolo Bonzini | && last_delta + ICOUNT_WOBBLE < delta * 2
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252 | 946fb27c | Paolo Bonzini | && icount_time_shift > 0) {
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253 | 946fb27c | Paolo Bonzini | /* The guest is getting too far ahead. Slow time down. */
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254 | 946fb27c | Paolo Bonzini | icount_time_shift--; |
255 | 946fb27c | Paolo Bonzini | } |
256 | 946fb27c | Paolo Bonzini | if (delta < 0 |
257 | 946fb27c | Paolo Bonzini | && last_delta - ICOUNT_WOBBLE > delta * 2
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258 | 946fb27c | Paolo Bonzini | && icount_time_shift < MAX_ICOUNT_SHIFT) { |
259 | 946fb27c | Paolo Bonzini | /* The guest is getting too far behind. Speed time up. */
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260 | 946fb27c | Paolo Bonzini | icount_time_shift++; |
261 | 946fb27c | Paolo Bonzini | } |
262 | 946fb27c | Paolo Bonzini | last_delta = delta; |
263 | 946fb27c | Paolo Bonzini | qemu_icount_bias = cur_icount - (qemu_icount << icount_time_shift); |
264 | 946fb27c | Paolo Bonzini | } |
265 | 946fb27c | Paolo Bonzini | |
266 | 946fb27c | Paolo Bonzini | static void icount_adjust_rt(void *opaque) |
267 | 946fb27c | Paolo Bonzini | { |
268 | 40daca54 | Alex Bligh | timer_mod(icount_rt_timer, |
269 | 40daca54 | Alex Bligh | qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
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270 | 946fb27c | Paolo Bonzini | icount_adjust(); |
271 | 946fb27c | Paolo Bonzini | } |
272 | 946fb27c | Paolo Bonzini | |
273 | 946fb27c | Paolo Bonzini | static void icount_adjust_vm(void *opaque) |
274 | 946fb27c | Paolo Bonzini | { |
275 | 40daca54 | Alex Bligh | timer_mod(icount_vm_timer, |
276 | 40daca54 | Alex Bligh | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + |
277 | 40daca54 | Alex Bligh | get_ticks_per_sec() / 10);
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278 | 946fb27c | Paolo Bonzini | icount_adjust(); |
279 | 946fb27c | Paolo Bonzini | } |
280 | 946fb27c | Paolo Bonzini | |
281 | 946fb27c | Paolo Bonzini | static int64_t qemu_icount_round(int64_t count)
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282 | 946fb27c | Paolo Bonzini | { |
283 | 946fb27c | Paolo Bonzini | return (count + (1 << icount_time_shift) - 1) >> icount_time_shift; |
284 | 946fb27c | Paolo Bonzini | } |
285 | 946fb27c | Paolo Bonzini | |
286 | 946fb27c | Paolo Bonzini | static void icount_warp_rt(void *opaque) |
287 | 946fb27c | Paolo Bonzini | { |
288 | 946fb27c | Paolo Bonzini | if (vm_clock_warp_start == -1) { |
289 | 946fb27c | Paolo Bonzini | return;
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290 | 946fb27c | Paolo Bonzini | } |
291 | 946fb27c | Paolo Bonzini | |
292 | 946fb27c | Paolo Bonzini | if (runstate_is_running()) {
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293 | 40daca54 | Alex Bligh | int64_t clock = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); |
294 | 8ed961d9 | Paolo Bonzini | int64_t warp_delta; |
295 | 8ed961d9 | Paolo Bonzini | |
296 | 8ed961d9 | Paolo Bonzini | warp_delta = clock - vm_clock_warp_start; |
297 | 8ed961d9 | Paolo Bonzini | if (use_icount == 2) { |
298 | 946fb27c | Paolo Bonzini | /*
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299 | 40daca54 | Alex Bligh | * In adaptive mode, do not let QEMU_CLOCK_VIRTUAL run too
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300 | 946fb27c | Paolo Bonzini | * far ahead of real time.
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301 | 946fb27c | Paolo Bonzini | */
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302 | 946fb27c | Paolo Bonzini | int64_t cur_time = cpu_get_clock(); |
303 | 468cc7cf | Paolo Bonzini | int64_t cur_icount = cpu_get_icount(); |
304 | 946fb27c | Paolo Bonzini | int64_t delta = cur_time - cur_icount; |
305 | 8ed961d9 | Paolo Bonzini | warp_delta = MIN(warp_delta, delta); |
306 | 946fb27c | Paolo Bonzini | } |
307 | 8ed961d9 | Paolo Bonzini | qemu_icount_bias += warp_delta; |
308 | 946fb27c | Paolo Bonzini | } |
309 | 946fb27c | Paolo Bonzini | vm_clock_warp_start = -1;
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310 | 8ed961d9 | Paolo Bonzini | |
311 | 8ed961d9 | Paolo Bonzini | if (qemu_clock_expired(QEMU_CLOCK_VIRTUAL)) {
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312 | 8ed961d9 | Paolo Bonzini | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
313 | 8ed961d9 | Paolo Bonzini | } |
314 | 946fb27c | Paolo Bonzini | } |
315 | 946fb27c | Paolo Bonzini | |
316 | 8156be56 | Paolo Bonzini | void qtest_clock_warp(int64_t dest)
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317 | 8156be56 | Paolo Bonzini | { |
318 | 40daca54 | Alex Bligh | int64_t clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
319 | 8156be56 | Paolo Bonzini | assert(qtest_enabled()); |
320 | 8156be56 | Paolo Bonzini | while (clock < dest) {
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321 | 40daca54 | Alex Bligh | int64_t deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
322 | 8156be56 | Paolo Bonzini | int64_t warp = MIN(dest - clock, deadline); |
323 | 8156be56 | Paolo Bonzini | qemu_icount_bias += warp; |
324 | 40daca54 | Alex Bligh | qemu_clock_run_timers(QEMU_CLOCK_VIRTUAL); |
325 | 40daca54 | Alex Bligh | clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
326 | 8156be56 | Paolo Bonzini | } |
327 | 40daca54 | Alex Bligh | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
328 | 8156be56 | Paolo Bonzini | } |
329 | 8156be56 | Paolo Bonzini | |
330 | 40daca54 | Alex Bligh | void qemu_clock_warp(QEMUClockType type)
|
331 | 946fb27c | Paolo Bonzini | { |
332 | 946fb27c | Paolo Bonzini | int64_t deadline; |
333 | 946fb27c | Paolo Bonzini | |
334 | 946fb27c | Paolo Bonzini | /*
|
335 | 946fb27c | Paolo Bonzini | * There are too many global variables to make the "warp" behavior
|
336 | 946fb27c | Paolo Bonzini | * applicable to other clocks. But a clock argument removes the
|
337 | 946fb27c | Paolo Bonzini | * need for if statements all over the place.
|
338 | 946fb27c | Paolo Bonzini | */
|
339 | 40daca54 | Alex Bligh | if (type != QEMU_CLOCK_VIRTUAL || !use_icount) {
|
340 | 946fb27c | Paolo Bonzini | return;
|
341 | 946fb27c | Paolo Bonzini | } |
342 | 946fb27c | Paolo Bonzini | |
343 | 946fb27c | Paolo Bonzini | /*
|
344 | 40daca54 | Alex Bligh | * If the CPUs have been sleeping, advance QEMU_CLOCK_VIRTUAL timer now.
|
345 | 40daca54 | Alex Bligh | * This ensures that the deadline for the timer is computed correctly below.
|
346 | 946fb27c | Paolo Bonzini | * This also makes sure that the insn counter is synchronized before the
|
347 | 946fb27c | Paolo Bonzini | * CPU starts running, in case the CPU is woken by an event other than
|
348 | 40daca54 | Alex Bligh | * the earliest QEMU_CLOCK_VIRTUAL timer.
|
349 | 946fb27c | Paolo Bonzini | */
|
350 | 946fb27c | Paolo Bonzini | icount_warp_rt(NULL);
|
351 | 40daca54 | Alex Bligh | if (!all_cpu_threads_idle() || !qemu_clock_has_timers(QEMU_CLOCK_VIRTUAL)) {
|
352 | 40daca54 | Alex Bligh | timer_del(icount_warp_timer); |
353 | 946fb27c | Paolo Bonzini | return;
|
354 | 946fb27c | Paolo Bonzini | } |
355 | 946fb27c | Paolo Bonzini | |
356 | 8156be56 | Paolo Bonzini | if (qtest_enabled()) {
|
357 | 8156be56 | Paolo Bonzini | /* When testing, qtest commands advance icount. */
|
358 | 8156be56 | Paolo Bonzini | return;
|
359 | 8156be56 | Paolo Bonzini | } |
360 | 8156be56 | Paolo Bonzini | |
361 | 40daca54 | Alex Bligh | vm_clock_warp_start = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); |
362 | ac70aafc | Alex Bligh | /* We want to use the earliest deadline from ALL vm_clocks */
|
363 | 40daca54 | Alex Bligh | deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
364 | ac70aafc | Alex Bligh | |
365 | ac70aafc | Alex Bligh | /* Maintain prior (possibly buggy) behaviour where if no deadline
|
366 | 40daca54 | Alex Bligh | * was set (as there is no QEMU_CLOCK_VIRTUAL timer) or it is more than
|
367 | ac70aafc | Alex Bligh | * INT32_MAX nanoseconds ahead, we still use INT32_MAX
|
368 | ac70aafc | Alex Bligh | * nanoseconds.
|
369 | ac70aafc | Alex Bligh | */
|
370 | ac70aafc | Alex Bligh | if ((deadline < 0) || (deadline > INT32_MAX)) { |
371 | ac70aafc | Alex Bligh | deadline = INT32_MAX; |
372 | ac70aafc | Alex Bligh | } |
373 | ac70aafc | Alex Bligh | |
374 | 946fb27c | Paolo Bonzini | if (deadline > 0) { |
375 | 946fb27c | Paolo Bonzini | /*
|
376 | 40daca54 | Alex Bligh | * Ensure QEMU_CLOCK_VIRTUAL proceeds even when the virtual CPU goes to
|
377 | 946fb27c | Paolo Bonzini | * sleep. Otherwise, the CPU might be waiting for a future timer
|
378 | 946fb27c | Paolo Bonzini | * interrupt to wake it up, but the interrupt never comes because
|
379 | 946fb27c | Paolo Bonzini | * the vCPU isn't running any insns and thus doesn't advance the
|
380 | 40daca54 | Alex Bligh | * QEMU_CLOCK_VIRTUAL.
|
381 | 946fb27c | Paolo Bonzini | *
|
382 | 946fb27c | Paolo Bonzini | * An extreme solution for this problem would be to never let VCPUs
|
383 | 40daca54 | Alex Bligh | * sleep in icount mode if there is a pending QEMU_CLOCK_VIRTUAL
|
384 | 40daca54 | Alex Bligh | * timer; rather time could just advance to the next QEMU_CLOCK_VIRTUAL
|
385 | 40daca54 | Alex Bligh | * event. Instead, we do stop VCPUs and only advance QEMU_CLOCK_VIRTUAL
|
386 | 40daca54 | Alex Bligh | * after some e"real" time, (related to the time left until the next
|
387 | 40daca54 | Alex Bligh | * event) has passed. The QEMU_CLOCK_REALTIME timer will do this.
|
388 | 40daca54 | Alex Bligh | * This avoids that the warps are visible externally; for example,
|
389 | 40daca54 | Alex Bligh | * you will not be sending network packets continuously instead of
|
390 | 40daca54 | Alex Bligh | * every 100ms.
|
391 | 946fb27c | Paolo Bonzini | */
|
392 | 40daca54 | Alex Bligh | timer_mod(icount_warp_timer, vm_clock_warp_start + deadline); |
393 | ac70aafc | Alex Bligh | } else if (deadline == 0) { |
394 | 40daca54 | Alex Bligh | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
395 | 946fb27c | Paolo Bonzini | } |
396 | 946fb27c | Paolo Bonzini | } |
397 | 946fb27c | Paolo Bonzini | |
398 | 946fb27c | Paolo Bonzini | static const VMStateDescription vmstate_timers = { |
399 | 946fb27c | Paolo Bonzini | .name = "timer",
|
400 | 946fb27c | Paolo Bonzini | .version_id = 2,
|
401 | 946fb27c | Paolo Bonzini | .minimum_version_id = 1,
|
402 | 946fb27c | Paolo Bonzini | .minimum_version_id_old = 1,
|
403 | 946fb27c | Paolo Bonzini | .fields = (VMStateField[]) { |
404 | 946fb27c | Paolo Bonzini | VMSTATE_INT64(cpu_ticks_offset, TimersState), |
405 | 946fb27c | Paolo Bonzini | VMSTATE_INT64(dummy, TimersState), |
406 | 946fb27c | Paolo Bonzini | VMSTATE_INT64_V(cpu_clock_offset, TimersState, 2),
|
407 | 946fb27c | Paolo Bonzini | VMSTATE_END_OF_LIST() |
408 | 946fb27c | Paolo Bonzini | } |
409 | 946fb27c | Paolo Bonzini | }; |
410 | 946fb27c | Paolo Bonzini | |
411 | 946fb27c | Paolo Bonzini | void configure_icount(const char *option) |
412 | 946fb27c | Paolo Bonzini | { |
413 | cb365646 | Liu Ping Fan | seqlock_init(&timers_state.vm_clock_seqlock, NULL);
|
414 | 946fb27c | Paolo Bonzini | vmstate_register(NULL, 0, &vmstate_timers, &timers_state); |
415 | 946fb27c | Paolo Bonzini | if (!option) {
|
416 | 946fb27c | Paolo Bonzini | return;
|
417 | 946fb27c | Paolo Bonzini | } |
418 | 946fb27c | Paolo Bonzini | |
419 | 40daca54 | Alex Bligh | icount_warp_timer = timer_new_ns(QEMU_CLOCK_REALTIME, |
420 | 40daca54 | Alex Bligh | icount_warp_rt, NULL);
|
421 | 946fb27c | Paolo Bonzini | if (strcmp(option, "auto") != 0) { |
422 | 946fb27c | Paolo Bonzini | icount_time_shift = strtol(option, NULL, 0); |
423 | 946fb27c | Paolo Bonzini | use_icount = 1;
|
424 | 946fb27c | Paolo Bonzini | return;
|
425 | 946fb27c | Paolo Bonzini | } |
426 | 946fb27c | Paolo Bonzini | |
427 | 946fb27c | Paolo Bonzini | use_icount = 2;
|
428 | 946fb27c | Paolo Bonzini | |
429 | 946fb27c | Paolo Bonzini | /* 125MIPS seems a reasonable initial guess at the guest speed.
|
430 | 946fb27c | Paolo Bonzini | It will be corrected fairly quickly anyway. */
|
431 | 946fb27c | Paolo Bonzini | icount_time_shift = 3;
|
432 | 946fb27c | Paolo Bonzini | |
433 | 946fb27c | Paolo Bonzini | /* Have both realtime and virtual time triggers for speed adjustment.
|
434 | 946fb27c | Paolo Bonzini | The realtime trigger catches emulated time passing too slowly,
|
435 | 946fb27c | Paolo Bonzini | the virtual time trigger catches emulated time passing too fast.
|
436 | 946fb27c | Paolo Bonzini | Realtime triggers occur even when idle, so use them less frequently
|
437 | 946fb27c | Paolo Bonzini | than VM triggers. */
|
438 | 40daca54 | Alex Bligh | icount_rt_timer = timer_new_ms(QEMU_CLOCK_REALTIME, |
439 | 40daca54 | Alex Bligh | icount_adjust_rt, NULL);
|
440 | 40daca54 | Alex Bligh | timer_mod(icount_rt_timer, |
441 | 40daca54 | Alex Bligh | qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
|
442 | 40daca54 | Alex Bligh | icount_vm_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, |
443 | 40daca54 | Alex Bligh | icount_adjust_vm, NULL);
|
444 | 40daca54 | Alex Bligh | timer_mod(icount_vm_timer, |
445 | 40daca54 | Alex Bligh | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + |
446 | 40daca54 | Alex Bligh | get_ticks_per_sec() / 10);
|
447 | 946fb27c | Paolo Bonzini | } |
448 | 946fb27c | Paolo Bonzini | |
449 | 946fb27c | Paolo Bonzini | /***********************************************************/
|
450 | 296af7c9 | Blue Swirl | void hw_error(const char *fmt, ...) |
451 | 296af7c9 | Blue Swirl | { |
452 | 296af7c9 | Blue Swirl | va_list ap; |
453 | 55e5c285 | Andreas Färber | CPUState *cpu; |
454 | 296af7c9 | Blue Swirl | |
455 | 296af7c9 | Blue Swirl | va_start(ap, fmt); |
456 | 296af7c9 | Blue Swirl | fprintf(stderr, "qemu: hardware error: ");
|
457 | 296af7c9 | Blue Swirl | vfprintf(stderr, fmt, ap); |
458 | 296af7c9 | Blue Swirl | fprintf(stderr, "\n");
|
459 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
460 | 55e5c285 | Andreas Färber | fprintf(stderr, "CPU #%d:\n", cpu->cpu_index);
|
461 | 878096ee | Andreas Färber | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_FPU); |
462 | 296af7c9 | Blue Swirl | } |
463 | 296af7c9 | Blue Swirl | va_end(ap); |
464 | 296af7c9 | Blue Swirl | abort(); |
465 | 296af7c9 | Blue Swirl | } |
466 | 296af7c9 | Blue Swirl | |
467 | 296af7c9 | Blue Swirl | void cpu_synchronize_all_states(void) |
468 | 296af7c9 | Blue Swirl | { |
469 | 182735ef | Andreas Färber | CPUState *cpu; |
470 | 296af7c9 | Blue Swirl | |
471 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
472 | 182735ef | Andreas Färber | cpu_synchronize_state(cpu); |
473 | 296af7c9 | Blue Swirl | } |
474 | 296af7c9 | Blue Swirl | } |
475 | 296af7c9 | Blue Swirl | |
476 | 296af7c9 | Blue Swirl | void cpu_synchronize_all_post_reset(void) |
477 | 296af7c9 | Blue Swirl | { |
478 | 182735ef | Andreas Färber | CPUState *cpu; |
479 | 296af7c9 | Blue Swirl | |
480 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
481 | 182735ef | Andreas Färber | cpu_synchronize_post_reset(cpu); |
482 | 296af7c9 | Blue Swirl | } |
483 | 296af7c9 | Blue Swirl | } |
484 | 296af7c9 | Blue Swirl | |
485 | 296af7c9 | Blue Swirl | void cpu_synchronize_all_post_init(void) |
486 | 296af7c9 | Blue Swirl | { |
487 | 182735ef | Andreas Färber | CPUState *cpu; |
488 | 296af7c9 | Blue Swirl | |
489 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
490 | 182735ef | Andreas Färber | cpu_synchronize_post_init(cpu); |
491 | 296af7c9 | Blue Swirl | } |
492 | 296af7c9 | Blue Swirl | } |
493 | 296af7c9 | Blue Swirl | |
494 | 56983463 | Kevin Wolf | static int do_vm_stop(RunState state) |
495 | 296af7c9 | Blue Swirl | { |
496 | 56983463 | Kevin Wolf | int ret = 0; |
497 | 56983463 | Kevin Wolf | |
498 | 1354869c | Luiz Capitulino | if (runstate_is_running()) {
|
499 | 296af7c9 | Blue Swirl | cpu_disable_ticks(); |
500 | 296af7c9 | Blue Swirl | pause_all_vcpus(); |
501 | f5bbfba1 | Luiz Capitulino | runstate_set(state); |
502 | 1dfb4dd9 | Luiz Capitulino | vm_state_notify(0, state);
|
503 | 296af7c9 | Blue Swirl | monitor_protocol_event(QEVENT_STOP, NULL);
|
504 | 296af7c9 | Blue Swirl | } |
505 | 56983463 | Kevin Wolf | |
506 | 594a45ce | Kevin Wolf | bdrv_drain_all(); |
507 | 594a45ce | Kevin Wolf | ret = bdrv_flush_all(); |
508 | 594a45ce | Kevin Wolf | |
509 | 56983463 | Kevin Wolf | return ret;
|
510 | 296af7c9 | Blue Swirl | } |
511 | 296af7c9 | Blue Swirl | |
512 | a1fcaa73 | Andreas Färber | static bool cpu_can_run(CPUState *cpu) |
513 | 296af7c9 | Blue Swirl | { |
514 | 4fdeee7c | Andreas Färber | if (cpu->stop) {
|
515 | a1fcaa73 | Andreas Färber | return false; |
516 | 0ab07c62 | Jan Kiszka | } |
517 | 321bc0b2 | Tiejun Chen | if (cpu_is_stopped(cpu)) {
|
518 | a1fcaa73 | Andreas Färber | return false; |
519 | 0ab07c62 | Jan Kiszka | } |
520 | a1fcaa73 | Andreas Färber | return true; |
521 | 296af7c9 | Blue Swirl | } |
522 | 296af7c9 | Blue Swirl | |
523 | 91325046 | Andreas Färber | static void cpu_handle_guest_debug(CPUState *cpu) |
524 | 83f338f7 | Jan Kiszka | { |
525 | 64f6b346 | Andreas Färber | gdb_set_stop_cpu(cpu); |
526 | 8cf71710 | Jan Kiszka | qemu_system_debug_request(); |
527 | f324e766 | Andreas Färber | cpu->stopped = true;
|
528 | 3c638d06 | Jan Kiszka | } |
529 | 3c638d06 | Jan Kiszka | |
530 | 714bd040 | Paolo Bonzini | static void cpu_signal(int sig) |
531 | 714bd040 | Paolo Bonzini | { |
532 | 4917cf44 | Andreas Färber | if (current_cpu) {
|
533 | 4917cf44 | Andreas Färber | cpu_exit(current_cpu); |
534 | 714bd040 | Paolo Bonzini | } |
535 | 714bd040 | Paolo Bonzini | exit_request = 1;
|
536 | 714bd040 | Paolo Bonzini | } |
537 | 714bd040 | Paolo Bonzini | |
538 | 6d9cb73c | Jan Kiszka | #ifdef CONFIG_LINUX
|
539 | 6d9cb73c | Jan Kiszka | static void sigbus_reraise(void) |
540 | 6d9cb73c | Jan Kiszka | { |
541 | 6d9cb73c | Jan Kiszka | sigset_t set; |
542 | 6d9cb73c | Jan Kiszka | struct sigaction action;
|
543 | 6d9cb73c | Jan Kiszka | |
544 | 6d9cb73c | Jan Kiszka | memset(&action, 0, sizeof(action)); |
545 | 6d9cb73c | Jan Kiszka | action.sa_handler = SIG_DFL; |
546 | 6d9cb73c | Jan Kiszka | if (!sigaction(SIGBUS, &action, NULL)) { |
547 | 6d9cb73c | Jan Kiszka | raise(SIGBUS); |
548 | 6d9cb73c | Jan Kiszka | sigemptyset(&set); |
549 | 6d9cb73c | Jan Kiszka | sigaddset(&set, SIGBUS); |
550 | 6d9cb73c | Jan Kiszka | sigprocmask(SIG_UNBLOCK, &set, NULL);
|
551 | 6d9cb73c | Jan Kiszka | } |
552 | 6d9cb73c | Jan Kiszka | perror("Failed to re-raise SIGBUS!\n");
|
553 | 6d9cb73c | Jan Kiszka | abort(); |
554 | 6d9cb73c | Jan Kiszka | } |
555 | 6d9cb73c | Jan Kiszka | |
556 | 6d9cb73c | Jan Kiszka | static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo, |
557 | 6d9cb73c | Jan Kiszka | void *ctx)
|
558 | 6d9cb73c | Jan Kiszka | { |
559 | 6d9cb73c | Jan Kiszka | if (kvm_on_sigbus(siginfo->ssi_code,
|
560 | 6d9cb73c | Jan Kiszka | (void *)(intptr_t)siginfo->ssi_addr)) {
|
561 | 6d9cb73c | Jan Kiszka | sigbus_reraise(); |
562 | 6d9cb73c | Jan Kiszka | } |
563 | 6d9cb73c | Jan Kiszka | } |
564 | 6d9cb73c | Jan Kiszka | |
565 | 6d9cb73c | Jan Kiszka | static void qemu_init_sigbus(void) |
566 | 6d9cb73c | Jan Kiszka | { |
567 | 6d9cb73c | Jan Kiszka | struct sigaction action;
|
568 | 6d9cb73c | Jan Kiszka | |
569 | 6d9cb73c | Jan Kiszka | memset(&action, 0, sizeof(action)); |
570 | 6d9cb73c | Jan Kiszka | action.sa_flags = SA_SIGINFO; |
571 | 6d9cb73c | Jan Kiszka | action.sa_sigaction = (void (*)(int, siginfo_t*, void*))sigbus_handler; |
572 | 6d9cb73c | Jan Kiszka | sigaction(SIGBUS, &action, NULL);
|
573 | 6d9cb73c | Jan Kiszka | |
574 | 6d9cb73c | Jan Kiszka | prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0); |
575 | 6d9cb73c | Jan Kiszka | } |
576 | 6d9cb73c | Jan Kiszka | |
577 | 290adf38 | Andreas Färber | static void qemu_kvm_eat_signals(CPUState *cpu) |
578 | 1ab3c6c0 | Jan Kiszka | { |
579 | 1ab3c6c0 | Jan Kiszka | struct timespec ts = { 0, 0 }; |
580 | 1ab3c6c0 | Jan Kiszka | siginfo_t siginfo; |
581 | 1ab3c6c0 | Jan Kiszka | sigset_t waitset; |
582 | 1ab3c6c0 | Jan Kiszka | sigset_t chkset; |
583 | 1ab3c6c0 | Jan Kiszka | int r;
|
584 | 1ab3c6c0 | Jan Kiszka | |
585 | 1ab3c6c0 | Jan Kiszka | sigemptyset(&waitset); |
586 | 1ab3c6c0 | Jan Kiszka | sigaddset(&waitset, SIG_IPI); |
587 | 1ab3c6c0 | Jan Kiszka | sigaddset(&waitset, SIGBUS); |
588 | 1ab3c6c0 | Jan Kiszka | |
589 | 1ab3c6c0 | Jan Kiszka | do {
|
590 | 1ab3c6c0 | Jan Kiszka | r = sigtimedwait(&waitset, &siginfo, &ts); |
591 | 1ab3c6c0 | Jan Kiszka | if (r == -1 && !(errno == EAGAIN || errno == EINTR)) { |
592 | 1ab3c6c0 | Jan Kiszka | perror("sigtimedwait");
|
593 | 1ab3c6c0 | Jan Kiszka | exit(1);
|
594 | 1ab3c6c0 | Jan Kiszka | } |
595 | 1ab3c6c0 | Jan Kiszka | |
596 | 1ab3c6c0 | Jan Kiszka | switch (r) {
|
597 | 1ab3c6c0 | Jan Kiszka | case SIGBUS:
|
598 | 290adf38 | Andreas Färber | if (kvm_on_sigbus_vcpu(cpu, siginfo.si_code, siginfo.si_addr)) {
|
599 | 1ab3c6c0 | Jan Kiszka | sigbus_reraise(); |
600 | 1ab3c6c0 | Jan Kiszka | } |
601 | 1ab3c6c0 | Jan Kiszka | break;
|
602 | 1ab3c6c0 | Jan Kiszka | default:
|
603 | 1ab3c6c0 | Jan Kiszka | break;
|
604 | 1ab3c6c0 | Jan Kiszka | } |
605 | 1ab3c6c0 | Jan Kiszka | |
606 | 1ab3c6c0 | Jan Kiszka | r = sigpending(&chkset); |
607 | 1ab3c6c0 | Jan Kiszka | if (r == -1) { |
608 | 1ab3c6c0 | Jan Kiszka | perror("sigpending");
|
609 | 1ab3c6c0 | Jan Kiszka | exit(1);
|
610 | 1ab3c6c0 | Jan Kiszka | } |
611 | 1ab3c6c0 | Jan Kiszka | } while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS));
|
612 | 1ab3c6c0 | Jan Kiszka | } |
613 | 1ab3c6c0 | Jan Kiszka | |
614 | 6d9cb73c | Jan Kiszka | #else /* !CONFIG_LINUX */ |
615 | 6d9cb73c | Jan Kiszka | |
616 | 6d9cb73c | Jan Kiszka | static void qemu_init_sigbus(void) |
617 | 6d9cb73c | Jan Kiszka | { |
618 | 6d9cb73c | Jan Kiszka | } |
619 | 1ab3c6c0 | Jan Kiszka | |
620 | 290adf38 | Andreas Färber | static void qemu_kvm_eat_signals(CPUState *cpu) |
621 | 1ab3c6c0 | Jan Kiszka | { |
622 | 1ab3c6c0 | Jan Kiszka | } |
623 | 6d9cb73c | Jan Kiszka | #endif /* !CONFIG_LINUX */ |
624 | 6d9cb73c | Jan Kiszka | |
625 | 296af7c9 | Blue Swirl | #ifndef _WIN32
|
626 | 55f8d6ac | Jan Kiszka | static void dummy_signal(int sig) |
627 | 55f8d6ac | Jan Kiszka | { |
628 | 55f8d6ac | Jan Kiszka | } |
629 | 55f8d6ac | Jan Kiszka | |
630 | 13618e05 | Andreas Färber | static void qemu_kvm_init_cpu_signals(CPUState *cpu) |
631 | 714bd040 | Paolo Bonzini | { |
632 | 714bd040 | Paolo Bonzini | int r;
|
633 | 714bd040 | Paolo Bonzini | sigset_t set; |
634 | 714bd040 | Paolo Bonzini | struct sigaction sigact;
|
635 | 714bd040 | Paolo Bonzini | |
636 | 714bd040 | Paolo Bonzini | memset(&sigact, 0, sizeof(sigact)); |
637 | 714bd040 | Paolo Bonzini | sigact.sa_handler = dummy_signal; |
638 | 714bd040 | Paolo Bonzini | sigaction(SIG_IPI, &sigact, NULL);
|
639 | 714bd040 | Paolo Bonzini | |
640 | 714bd040 | Paolo Bonzini | pthread_sigmask(SIG_BLOCK, NULL, &set);
|
641 | 714bd040 | Paolo Bonzini | sigdelset(&set, SIG_IPI); |
642 | 714bd040 | Paolo Bonzini | sigdelset(&set, SIGBUS); |
643 | 491d6e80 | Andreas Färber | r = kvm_set_signal_mask(cpu, &set); |
644 | 714bd040 | Paolo Bonzini | if (r) {
|
645 | 714bd040 | Paolo Bonzini | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r));
|
646 | 714bd040 | Paolo Bonzini | exit(1);
|
647 | 714bd040 | Paolo Bonzini | } |
648 | 714bd040 | Paolo Bonzini | } |
649 | 714bd040 | Paolo Bonzini | |
650 | 714bd040 | Paolo Bonzini | static void qemu_tcg_init_cpu_signals(void) |
651 | 714bd040 | Paolo Bonzini | { |
652 | 714bd040 | Paolo Bonzini | sigset_t set; |
653 | 714bd040 | Paolo Bonzini | struct sigaction sigact;
|
654 | 714bd040 | Paolo Bonzini | |
655 | 714bd040 | Paolo Bonzini | memset(&sigact, 0, sizeof(sigact)); |
656 | 714bd040 | Paolo Bonzini | sigact.sa_handler = cpu_signal; |
657 | 714bd040 | Paolo Bonzini | sigaction(SIG_IPI, &sigact, NULL);
|
658 | 714bd040 | Paolo Bonzini | |
659 | 714bd040 | Paolo Bonzini | sigemptyset(&set); |
660 | 714bd040 | Paolo Bonzini | sigaddset(&set, SIG_IPI); |
661 | 714bd040 | Paolo Bonzini | pthread_sigmask(SIG_UNBLOCK, &set, NULL);
|
662 | 714bd040 | Paolo Bonzini | } |
663 | 714bd040 | Paolo Bonzini | |
664 | 55f8d6ac | Jan Kiszka | #else /* _WIN32 */ |
665 | 13618e05 | Andreas Färber | static void qemu_kvm_init_cpu_signals(CPUState *cpu) |
666 | ff48eb5f | Jan Kiszka | { |
667 | 714bd040 | Paolo Bonzini | abort(); |
668 | 714bd040 | Paolo Bonzini | } |
669 | ff48eb5f | Jan Kiszka | |
670 | 714bd040 | Paolo Bonzini | static void qemu_tcg_init_cpu_signals(void) |
671 | 714bd040 | Paolo Bonzini | { |
672 | ff48eb5f | Jan Kiszka | } |
673 | 714bd040 | Paolo Bonzini | #endif /* _WIN32 */ |
674 | ff48eb5f | Jan Kiszka | |
675 | b2532d88 | Stefan Weil | static QemuMutex qemu_global_mutex;
|
676 | 46daff13 | Paolo Bonzini | static QemuCond qemu_io_proceeded_cond;
|
677 | 46daff13 | Paolo Bonzini | static bool iothread_requesting_mutex; |
678 | 296af7c9 | Blue Swirl | |
679 | 296af7c9 | Blue Swirl | static QemuThread io_thread;
|
680 | 296af7c9 | Blue Swirl | |
681 | 296af7c9 | Blue Swirl | static QemuThread *tcg_cpu_thread;
|
682 | 296af7c9 | Blue Swirl | static QemuCond *tcg_halt_cond;
|
683 | 296af7c9 | Blue Swirl | |
684 | 296af7c9 | Blue Swirl | /* cpu creation */
|
685 | 296af7c9 | Blue Swirl | static QemuCond qemu_cpu_cond;
|
686 | 296af7c9 | Blue Swirl | /* system init */
|
687 | 296af7c9 | Blue Swirl | static QemuCond qemu_pause_cond;
|
688 | e82bcec2 | Marcelo Tosatti | static QemuCond qemu_work_cond;
|
689 | 296af7c9 | Blue Swirl | |
690 | d3b12f5d | Paolo Bonzini | void qemu_init_cpu_loop(void) |
691 | 296af7c9 | Blue Swirl | { |
692 | 6d9cb73c | Jan Kiszka | qemu_init_sigbus(); |
693 | ed94592b | Anthony Liguori | qemu_cond_init(&qemu_cpu_cond); |
694 | ed94592b | Anthony Liguori | qemu_cond_init(&qemu_pause_cond); |
695 | ed94592b | Anthony Liguori | qemu_cond_init(&qemu_work_cond); |
696 | 46daff13 | Paolo Bonzini | qemu_cond_init(&qemu_io_proceeded_cond); |
697 | 296af7c9 | Blue Swirl | qemu_mutex_init(&qemu_global_mutex); |
698 | 296af7c9 | Blue Swirl | |
699 | b7680cb6 | Jan Kiszka | qemu_thread_get_self(&io_thread); |
700 | 296af7c9 | Blue Swirl | } |
701 | 296af7c9 | Blue Swirl | |
702 | f100f0b3 | Andreas Färber | void run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data) |
703 | e82bcec2 | Marcelo Tosatti | { |
704 | e82bcec2 | Marcelo Tosatti | struct qemu_work_item wi;
|
705 | e82bcec2 | Marcelo Tosatti | |
706 | 60e82579 | Andreas Färber | if (qemu_cpu_is_self(cpu)) {
|
707 | e82bcec2 | Marcelo Tosatti | func(data); |
708 | e82bcec2 | Marcelo Tosatti | return;
|
709 | e82bcec2 | Marcelo Tosatti | } |
710 | e82bcec2 | Marcelo Tosatti | |
711 | e82bcec2 | Marcelo Tosatti | wi.func = func; |
712 | e82bcec2 | Marcelo Tosatti | wi.data = data; |
713 | 3c02270d | Chegu Vinod | wi.free = false;
|
714 | c64ca814 | Andreas Färber | if (cpu->queued_work_first == NULL) { |
715 | c64ca814 | Andreas Färber | cpu->queued_work_first = &wi; |
716 | 0ab07c62 | Jan Kiszka | } else {
|
717 | c64ca814 | Andreas Färber | cpu->queued_work_last->next = &wi; |
718 | 0ab07c62 | Jan Kiszka | } |
719 | c64ca814 | Andreas Färber | cpu->queued_work_last = &wi; |
720 | e82bcec2 | Marcelo Tosatti | wi.next = NULL;
|
721 | e82bcec2 | Marcelo Tosatti | wi.done = false;
|
722 | e82bcec2 | Marcelo Tosatti | |
723 | c08d7424 | Andreas Färber | qemu_cpu_kick(cpu); |
724 | e82bcec2 | Marcelo Tosatti | while (!wi.done) {
|
725 | 4917cf44 | Andreas Färber | CPUState *self_cpu = current_cpu; |
726 | e82bcec2 | Marcelo Tosatti | |
727 | e82bcec2 | Marcelo Tosatti | qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex); |
728 | 4917cf44 | Andreas Färber | current_cpu = self_cpu; |
729 | e82bcec2 | Marcelo Tosatti | } |
730 | e82bcec2 | Marcelo Tosatti | } |
731 | e82bcec2 | Marcelo Tosatti | |
732 | 3c02270d | Chegu Vinod | void async_run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data) |
733 | 3c02270d | Chegu Vinod | { |
734 | 3c02270d | Chegu Vinod | struct qemu_work_item *wi;
|
735 | 3c02270d | Chegu Vinod | |
736 | 3c02270d | Chegu Vinod | if (qemu_cpu_is_self(cpu)) {
|
737 | 3c02270d | Chegu Vinod | func(data); |
738 | 3c02270d | Chegu Vinod | return;
|
739 | 3c02270d | Chegu Vinod | } |
740 | 3c02270d | Chegu Vinod | |
741 | 3c02270d | Chegu Vinod | wi = g_malloc0(sizeof(struct qemu_work_item)); |
742 | 3c02270d | Chegu Vinod | wi->func = func; |
743 | 3c02270d | Chegu Vinod | wi->data = data; |
744 | 3c02270d | Chegu Vinod | wi->free = true;
|
745 | 3c02270d | Chegu Vinod | if (cpu->queued_work_first == NULL) { |
746 | 3c02270d | Chegu Vinod | cpu->queued_work_first = wi; |
747 | 3c02270d | Chegu Vinod | } else {
|
748 | 3c02270d | Chegu Vinod | cpu->queued_work_last->next = wi; |
749 | 3c02270d | Chegu Vinod | } |
750 | 3c02270d | Chegu Vinod | cpu->queued_work_last = wi; |
751 | 3c02270d | Chegu Vinod | wi->next = NULL;
|
752 | 3c02270d | Chegu Vinod | wi->done = false;
|
753 | 3c02270d | Chegu Vinod | |
754 | 3c02270d | Chegu Vinod | qemu_cpu_kick(cpu); |
755 | 3c02270d | Chegu Vinod | } |
756 | 3c02270d | Chegu Vinod | |
757 | 6d45b109 | Andreas Färber | static void flush_queued_work(CPUState *cpu) |
758 | e82bcec2 | Marcelo Tosatti | { |
759 | e82bcec2 | Marcelo Tosatti | struct qemu_work_item *wi;
|
760 | e82bcec2 | Marcelo Tosatti | |
761 | c64ca814 | Andreas Färber | if (cpu->queued_work_first == NULL) { |
762 | e82bcec2 | Marcelo Tosatti | return;
|
763 | 0ab07c62 | Jan Kiszka | } |
764 | e82bcec2 | Marcelo Tosatti | |
765 | c64ca814 | Andreas Färber | while ((wi = cpu->queued_work_first)) {
|
766 | c64ca814 | Andreas Färber | cpu->queued_work_first = wi->next; |
767 | e82bcec2 | Marcelo Tosatti | wi->func(wi->data); |
768 | e82bcec2 | Marcelo Tosatti | wi->done = true;
|
769 | 3c02270d | Chegu Vinod | if (wi->free) {
|
770 | 3c02270d | Chegu Vinod | g_free(wi); |
771 | 3c02270d | Chegu Vinod | } |
772 | e82bcec2 | Marcelo Tosatti | } |
773 | c64ca814 | Andreas Färber | cpu->queued_work_last = NULL;
|
774 | e82bcec2 | Marcelo Tosatti | qemu_cond_broadcast(&qemu_work_cond); |
775 | e82bcec2 | Marcelo Tosatti | } |
776 | e82bcec2 | Marcelo Tosatti | |
777 | 509a0d78 | Andreas Färber | static void qemu_wait_io_event_common(CPUState *cpu) |
778 | 296af7c9 | Blue Swirl | { |
779 | 4fdeee7c | Andreas Färber | if (cpu->stop) {
|
780 | 4fdeee7c | Andreas Färber | cpu->stop = false;
|
781 | f324e766 | Andreas Färber | cpu->stopped = true;
|
782 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_pause_cond); |
783 | 296af7c9 | Blue Swirl | } |
784 | 6d45b109 | Andreas Färber | flush_queued_work(cpu); |
785 | 216fc9a4 | Andreas Färber | cpu->thread_kicked = false;
|
786 | 296af7c9 | Blue Swirl | } |
787 | 296af7c9 | Blue Swirl | |
788 | 6cabe1f3 | Jan Kiszka | static void qemu_tcg_wait_io_event(void) |
789 | 296af7c9 | Blue Swirl | { |
790 | 182735ef | Andreas Färber | CPUState *cpu; |
791 | 6cabe1f3 | Jan Kiszka | |
792 | 16400322 | Jan Kiszka | while (all_cpu_threads_idle()) {
|
793 | ab33fcda | Paolo Bonzini | /* Start accounting real time to the virtual clock if the CPUs
|
794 | ab33fcda | Paolo Bonzini | are idle. */
|
795 | 40daca54 | Alex Bligh | qemu_clock_warp(QEMU_CLOCK_VIRTUAL); |
796 | 9705fbb5 | Paolo Bonzini | qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); |
797 | 16400322 | Jan Kiszka | } |
798 | 296af7c9 | Blue Swirl | |
799 | 46daff13 | Paolo Bonzini | while (iothread_requesting_mutex) {
|
800 | 46daff13 | Paolo Bonzini | qemu_cond_wait(&qemu_io_proceeded_cond, &qemu_global_mutex); |
801 | 46daff13 | Paolo Bonzini | } |
802 | 6cabe1f3 | Jan Kiszka | |
803 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
804 | 182735ef | Andreas Färber | qemu_wait_io_event_common(cpu); |
805 | 6cabe1f3 | Jan Kiszka | } |
806 | 296af7c9 | Blue Swirl | } |
807 | 296af7c9 | Blue Swirl | |
808 | fd529e8f | Andreas Färber | static void qemu_kvm_wait_io_event(CPUState *cpu) |
809 | 296af7c9 | Blue Swirl | { |
810 | a98ae1d8 | Andreas Färber | while (cpu_thread_is_idle(cpu)) {
|
811 | f5c121b8 | Andreas Färber | qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex); |
812 | 16400322 | Jan Kiszka | } |
813 | 296af7c9 | Blue Swirl | |
814 | 290adf38 | Andreas Färber | qemu_kvm_eat_signals(cpu); |
815 | 509a0d78 | Andreas Färber | qemu_wait_io_event_common(cpu); |
816 | 296af7c9 | Blue Swirl | } |
817 | 296af7c9 | Blue Swirl | |
818 | 7e97cd88 | Jan Kiszka | static void *qemu_kvm_cpu_thread_fn(void *arg) |
819 | 296af7c9 | Blue Swirl | { |
820 | 48a106bd | Andreas Färber | CPUState *cpu = arg; |
821 | 84b4915d | Jan Kiszka | int r;
|
822 | 296af7c9 | Blue Swirl | |
823 | 6164e6d6 | Marcelo Tosatti | qemu_mutex_lock(&qemu_global_mutex); |
824 | 814e612e | Andreas Färber | qemu_thread_get_self(cpu->thread); |
825 | 9f09e18a | Andreas Färber | cpu->thread_id = qemu_get_thread_id(); |
826 | 4917cf44 | Andreas Färber | current_cpu = cpu; |
827 | 296af7c9 | Blue Swirl | |
828 | 504134d2 | Andreas Färber | r = kvm_init_vcpu(cpu); |
829 | 84b4915d | Jan Kiszka | if (r < 0) { |
830 | 84b4915d | Jan Kiszka | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r));
|
831 | 84b4915d | Jan Kiszka | exit(1);
|
832 | 84b4915d | Jan Kiszka | } |
833 | 296af7c9 | Blue Swirl | |
834 | 13618e05 | Andreas Färber | qemu_kvm_init_cpu_signals(cpu); |
835 | 296af7c9 | Blue Swirl | |
836 | 296af7c9 | Blue Swirl | /* signal CPU creation */
|
837 | 61a46217 | Andreas Färber | cpu->created = true;
|
838 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_cpu_cond); |
839 | 296af7c9 | Blue Swirl | |
840 | 296af7c9 | Blue Swirl | while (1) { |
841 | a1fcaa73 | Andreas Färber | if (cpu_can_run(cpu)) {
|
842 | 1458c363 | Andreas Färber | r = kvm_cpu_exec(cpu); |
843 | 83f338f7 | Jan Kiszka | if (r == EXCP_DEBUG) {
|
844 | 91325046 | Andreas Färber | cpu_handle_guest_debug(cpu); |
845 | 83f338f7 | Jan Kiszka | } |
846 | 0ab07c62 | Jan Kiszka | } |
847 | fd529e8f | Andreas Färber | qemu_kvm_wait_io_event(cpu); |
848 | 296af7c9 | Blue Swirl | } |
849 | 296af7c9 | Blue Swirl | |
850 | 296af7c9 | Blue Swirl | return NULL; |
851 | 296af7c9 | Blue Swirl | } |
852 | 296af7c9 | Blue Swirl | |
853 | c7f0f3b1 | Anthony Liguori | static void *qemu_dummy_cpu_thread_fn(void *arg) |
854 | c7f0f3b1 | Anthony Liguori | { |
855 | c7f0f3b1 | Anthony Liguori | #ifdef _WIN32
|
856 | c7f0f3b1 | Anthony Liguori | fprintf(stderr, "qtest is not supported under Windows\n");
|
857 | c7f0f3b1 | Anthony Liguori | exit(1);
|
858 | c7f0f3b1 | Anthony Liguori | #else
|
859 | 10a9021d | Andreas Färber | CPUState *cpu = arg; |
860 | c7f0f3b1 | Anthony Liguori | sigset_t waitset; |
861 | c7f0f3b1 | Anthony Liguori | int r;
|
862 | c7f0f3b1 | Anthony Liguori | |
863 | c7f0f3b1 | Anthony Liguori | qemu_mutex_lock_iothread(); |
864 | 814e612e | Andreas Färber | qemu_thread_get_self(cpu->thread); |
865 | 9f09e18a | Andreas Färber | cpu->thread_id = qemu_get_thread_id(); |
866 | c7f0f3b1 | Anthony Liguori | |
867 | c7f0f3b1 | Anthony Liguori | sigemptyset(&waitset); |
868 | c7f0f3b1 | Anthony Liguori | sigaddset(&waitset, SIG_IPI); |
869 | c7f0f3b1 | Anthony Liguori | |
870 | c7f0f3b1 | Anthony Liguori | /* signal CPU creation */
|
871 | 61a46217 | Andreas Färber | cpu->created = true;
|
872 | c7f0f3b1 | Anthony Liguori | qemu_cond_signal(&qemu_cpu_cond); |
873 | c7f0f3b1 | Anthony Liguori | |
874 | 4917cf44 | Andreas Färber | current_cpu = cpu; |
875 | c7f0f3b1 | Anthony Liguori | while (1) { |
876 | 4917cf44 | Andreas Färber | current_cpu = NULL;
|
877 | c7f0f3b1 | Anthony Liguori | qemu_mutex_unlock_iothread(); |
878 | c7f0f3b1 | Anthony Liguori | do {
|
879 | c7f0f3b1 | Anthony Liguori | int sig;
|
880 | c7f0f3b1 | Anthony Liguori | r = sigwait(&waitset, &sig); |
881 | c7f0f3b1 | Anthony Liguori | } while (r == -1 && (errno == EAGAIN || errno == EINTR)); |
882 | c7f0f3b1 | Anthony Liguori | if (r == -1) { |
883 | c7f0f3b1 | Anthony Liguori | perror("sigwait");
|
884 | c7f0f3b1 | Anthony Liguori | exit(1);
|
885 | c7f0f3b1 | Anthony Liguori | } |
886 | c7f0f3b1 | Anthony Liguori | qemu_mutex_lock_iothread(); |
887 | 4917cf44 | Andreas Färber | current_cpu = cpu; |
888 | 509a0d78 | Andreas Färber | qemu_wait_io_event_common(cpu); |
889 | c7f0f3b1 | Anthony Liguori | } |
890 | c7f0f3b1 | Anthony Liguori | |
891 | c7f0f3b1 | Anthony Liguori | return NULL; |
892 | c7f0f3b1 | Anthony Liguori | #endif
|
893 | c7f0f3b1 | Anthony Liguori | } |
894 | c7f0f3b1 | Anthony Liguori | |
895 | bdb7ca67 | Jan Kiszka | static void tcg_exec_all(void); |
896 | bdb7ca67 | Jan Kiszka | |
897 | 7e97cd88 | Jan Kiszka | static void *qemu_tcg_cpu_thread_fn(void *arg) |
898 | 296af7c9 | Blue Swirl | { |
899 | c3586ba7 | Andreas Färber | CPUState *cpu = arg; |
900 | 296af7c9 | Blue Swirl | |
901 | 55f8d6ac | Jan Kiszka | qemu_tcg_init_cpu_signals(); |
902 | 814e612e | Andreas Färber | qemu_thread_get_self(cpu->thread); |
903 | 296af7c9 | Blue Swirl | |
904 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
905 | 38fcbd3f | Andreas Färber | CPU_FOREACH(cpu) { |
906 | 38fcbd3f | Andreas Färber | cpu->thread_id = qemu_get_thread_id(); |
907 | 38fcbd3f | Andreas Färber | cpu->created = true;
|
908 | 38fcbd3f | Andreas Färber | } |
909 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_cpu_cond); |
910 | 296af7c9 | Blue Swirl | |
911 | fa7d1867 | Jan Kiszka | /* wait for initial kick-off after machine start */
|
912 | bdc44640 | Andreas Färber | while (QTAILQ_FIRST(&cpus)->stopped) {
|
913 | fa7d1867 | Jan Kiszka | qemu_cond_wait(tcg_halt_cond, &qemu_global_mutex); |
914 | 8e564b4e | Jan Kiszka | |
915 | 8e564b4e | Jan Kiszka | /* process any pending work */
|
916 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
917 | 182735ef | Andreas Färber | qemu_wait_io_event_common(cpu); |
918 | 8e564b4e | Jan Kiszka | } |
919 | 0ab07c62 | Jan Kiszka | } |
920 | 296af7c9 | Blue Swirl | |
921 | 296af7c9 | Blue Swirl | while (1) { |
922 | bdb7ca67 | Jan Kiszka | tcg_exec_all(); |
923 | ac70aafc | Alex Bligh | |
924 | ac70aafc | Alex Bligh | if (use_icount) {
|
925 | 40daca54 | Alex Bligh | int64_t deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
926 | ac70aafc | Alex Bligh | |
927 | ac70aafc | Alex Bligh | if (deadline == 0) { |
928 | 40daca54 | Alex Bligh | qemu_clock_notify(QEMU_CLOCK_VIRTUAL); |
929 | ac70aafc | Alex Bligh | } |
930 | 3b2319a3 | Paolo Bonzini | } |
931 | 6cabe1f3 | Jan Kiszka | qemu_tcg_wait_io_event(); |
932 | 296af7c9 | Blue Swirl | } |
933 | 296af7c9 | Blue Swirl | |
934 | 296af7c9 | Blue Swirl | return NULL; |
935 | 296af7c9 | Blue Swirl | } |
936 | 296af7c9 | Blue Swirl | |
937 | 2ff09a40 | Andreas Färber | static void qemu_cpu_kick_thread(CPUState *cpu) |
938 | cc015e9a | Paolo Bonzini | { |
939 | cc015e9a | Paolo Bonzini | #ifndef _WIN32
|
940 | cc015e9a | Paolo Bonzini | int err;
|
941 | cc015e9a | Paolo Bonzini | |
942 | 814e612e | Andreas Färber | err = pthread_kill(cpu->thread->thread, SIG_IPI); |
943 | cc015e9a | Paolo Bonzini | if (err) {
|
944 | cc015e9a | Paolo Bonzini | fprintf(stderr, "qemu:%s: %s", __func__, strerror(err));
|
945 | cc015e9a | Paolo Bonzini | exit(1);
|
946 | cc015e9a | Paolo Bonzini | } |
947 | cc015e9a | Paolo Bonzini | #else /* _WIN32 */ |
948 | 60e82579 | Andreas Färber | if (!qemu_cpu_is_self(cpu)) {
|
949 | ed9164a3 | Olivier Hainque | CONTEXT tcgContext; |
950 | ed9164a3 | Olivier Hainque | |
951 | ed9164a3 | Olivier Hainque | if (SuspendThread(cpu->hThread) == (DWORD)-1) { |
952 | 7f1721df | Stefan Weil | fprintf(stderr, "qemu:%s: GetLastError:%lu\n", __func__,
|
953 | ed9164a3 | Olivier Hainque | GetLastError()); |
954 | ed9164a3 | Olivier Hainque | exit(1);
|
955 | ed9164a3 | Olivier Hainque | } |
956 | ed9164a3 | Olivier Hainque | |
957 | ed9164a3 | Olivier Hainque | /* On multi-core systems, we are not sure that the thread is actually
|
958 | ed9164a3 | Olivier Hainque | * suspended until we can get the context.
|
959 | ed9164a3 | Olivier Hainque | */
|
960 | ed9164a3 | Olivier Hainque | tcgContext.ContextFlags = CONTEXT_CONTROL; |
961 | ed9164a3 | Olivier Hainque | while (GetThreadContext(cpu->hThread, &tcgContext) != 0) { |
962 | ed9164a3 | Olivier Hainque | continue;
|
963 | ed9164a3 | Olivier Hainque | } |
964 | ed9164a3 | Olivier Hainque | |
965 | cc015e9a | Paolo Bonzini | cpu_signal(0);
|
966 | ed9164a3 | Olivier Hainque | |
967 | ed9164a3 | Olivier Hainque | if (ResumeThread(cpu->hThread) == (DWORD)-1) { |
968 | 7f1721df | Stefan Weil | fprintf(stderr, "qemu:%s: GetLastError:%lu\n", __func__,
|
969 | ed9164a3 | Olivier Hainque | GetLastError()); |
970 | ed9164a3 | Olivier Hainque | exit(1);
|
971 | ed9164a3 | Olivier Hainque | } |
972 | cc015e9a | Paolo Bonzini | } |
973 | cc015e9a | Paolo Bonzini | #endif
|
974 | cc015e9a | Paolo Bonzini | } |
975 | cc015e9a | Paolo Bonzini | |
976 | c08d7424 | Andreas Färber | void qemu_cpu_kick(CPUState *cpu)
|
977 | 296af7c9 | Blue Swirl | { |
978 | f5c121b8 | Andreas Färber | qemu_cond_broadcast(cpu->halt_cond); |
979 | 216fc9a4 | Andreas Färber | if (!tcg_enabled() && !cpu->thread_kicked) {
|
980 | 2ff09a40 | Andreas Färber | qemu_cpu_kick_thread(cpu); |
981 | 216fc9a4 | Andreas Färber | cpu->thread_kicked = true;
|
982 | aa2c364b | Jan Kiszka | } |
983 | 296af7c9 | Blue Swirl | } |
984 | 296af7c9 | Blue Swirl | |
985 | 46d62fac | Jan Kiszka | void qemu_cpu_kick_self(void) |
986 | 296af7c9 | Blue Swirl | { |
987 | b55c22c6 | Paolo Bonzini | #ifndef _WIN32
|
988 | 4917cf44 | Andreas Färber | assert(current_cpu); |
989 | 296af7c9 | Blue Swirl | |
990 | 4917cf44 | Andreas Färber | if (!current_cpu->thread_kicked) {
|
991 | 4917cf44 | Andreas Färber | qemu_cpu_kick_thread(current_cpu); |
992 | 4917cf44 | Andreas Färber | current_cpu->thread_kicked = true;
|
993 | 296af7c9 | Blue Swirl | } |
994 | b55c22c6 | Paolo Bonzini | #else
|
995 | b55c22c6 | Paolo Bonzini | abort(); |
996 | b55c22c6 | Paolo Bonzini | #endif
|
997 | 296af7c9 | Blue Swirl | } |
998 | 296af7c9 | Blue Swirl | |
999 | 60e82579 | Andreas Färber | bool qemu_cpu_is_self(CPUState *cpu)
|
1000 | 296af7c9 | Blue Swirl | { |
1001 | 814e612e | Andreas Färber | return qemu_thread_is_self(cpu->thread);
|
1002 | 296af7c9 | Blue Swirl | } |
1003 | 296af7c9 | Blue Swirl | |
1004 | aa723c23 | Juan Quintela | static bool qemu_in_vcpu_thread(void) |
1005 | aa723c23 | Juan Quintela | { |
1006 | 4917cf44 | Andreas Färber | return current_cpu && qemu_cpu_is_self(current_cpu);
|
1007 | aa723c23 | Juan Quintela | } |
1008 | aa723c23 | Juan Quintela | |
1009 | 296af7c9 | Blue Swirl | void qemu_mutex_lock_iothread(void) |
1010 | 296af7c9 | Blue Swirl | { |
1011 | c7f0f3b1 | Anthony Liguori | if (!tcg_enabled()) {
|
1012 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
1013 | 1a28cac3 | Marcelo Tosatti | } else {
|
1014 | 46daff13 | Paolo Bonzini | iothread_requesting_mutex = true;
|
1015 | 1a28cac3 | Marcelo Tosatti | if (qemu_mutex_trylock(&qemu_global_mutex)) {
|
1016 | 182735ef | Andreas Färber | qemu_cpu_kick_thread(first_cpu); |
1017 | 1a28cac3 | Marcelo Tosatti | qemu_mutex_lock(&qemu_global_mutex); |
1018 | 1a28cac3 | Marcelo Tosatti | } |
1019 | 46daff13 | Paolo Bonzini | iothread_requesting_mutex = false;
|
1020 | 46daff13 | Paolo Bonzini | qemu_cond_broadcast(&qemu_io_proceeded_cond); |
1021 | 1a28cac3 | Marcelo Tosatti | } |
1022 | 296af7c9 | Blue Swirl | } |
1023 | 296af7c9 | Blue Swirl | |
1024 | 296af7c9 | Blue Swirl | void qemu_mutex_unlock_iothread(void) |
1025 | 296af7c9 | Blue Swirl | { |
1026 | 296af7c9 | Blue Swirl | qemu_mutex_unlock(&qemu_global_mutex); |
1027 | 296af7c9 | Blue Swirl | } |
1028 | 296af7c9 | Blue Swirl | |
1029 | 296af7c9 | Blue Swirl | static int all_vcpus_paused(void) |
1030 | 296af7c9 | Blue Swirl | { |
1031 | bdc44640 | Andreas Färber | CPUState *cpu; |
1032 | 296af7c9 | Blue Swirl | |
1033 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1034 | 182735ef | Andreas Färber | if (!cpu->stopped) {
|
1035 | 296af7c9 | Blue Swirl | return 0; |
1036 | 0ab07c62 | Jan Kiszka | } |
1037 | 296af7c9 | Blue Swirl | } |
1038 | 296af7c9 | Blue Swirl | |
1039 | 296af7c9 | Blue Swirl | return 1; |
1040 | 296af7c9 | Blue Swirl | } |
1041 | 296af7c9 | Blue Swirl | |
1042 | 296af7c9 | Blue Swirl | void pause_all_vcpus(void) |
1043 | 296af7c9 | Blue Swirl | { |
1044 | bdc44640 | Andreas Färber | CPUState *cpu; |
1045 | 296af7c9 | Blue Swirl | |
1046 | 40daca54 | Alex Bligh | qemu_clock_enable(QEMU_CLOCK_VIRTUAL, false);
|
1047 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1048 | 182735ef | Andreas Färber | cpu->stop = true;
|
1049 | 182735ef | Andreas Färber | qemu_cpu_kick(cpu); |
1050 | 296af7c9 | Blue Swirl | } |
1051 | 296af7c9 | Blue Swirl | |
1052 | aa723c23 | Juan Quintela | if (qemu_in_vcpu_thread()) {
|
1053 | d798e974 | Jan Kiszka | cpu_stop_current(); |
1054 | d798e974 | Jan Kiszka | if (!kvm_enabled()) {
|
1055 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1056 | 182735ef | Andreas Färber | cpu->stop = false;
|
1057 | 182735ef | Andreas Färber | cpu->stopped = true;
|
1058 | d798e974 | Jan Kiszka | } |
1059 | d798e974 | Jan Kiszka | return;
|
1060 | d798e974 | Jan Kiszka | } |
1061 | d798e974 | Jan Kiszka | } |
1062 | d798e974 | Jan Kiszka | |
1063 | 296af7c9 | Blue Swirl | while (!all_vcpus_paused()) {
|
1064 | be7d6c57 | Paolo Bonzini | qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex); |
1065 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1066 | 182735ef | Andreas Färber | qemu_cpu_kick(cpu); |
1067 | 296af7c9 | Blue Swirl | } |
1068 | 296af7c9 | Blue Swirl | } |
1069 | 296af7c9 | Blue Swirl | } |
1070 | 296af7c9 | Blue Swirl | |
1071 | 2993683b | Igor Mammedov | void cpu_resume(CPUState *cpu)
|
1072 | 2993683b | Igor Mammedov | { |
1073 | 2993683b | Igor Mammedov | cpu->stop = false;
|
1074 | 2993683b | Igor Mammedov | cpu->stopped = false;
|
1075 | 2993683b | Igor Mammedov | qemu_cpu_kick(cpu); |
1076 | 2993683b | Igor Mammedov | } |
1077 | 2993683b | Igor Mammedov | |
1078 | 296af7c9 | Blue Swirl | void resume_all_vcpus(void) |
1079 | 296af7c9 | Blue Swirl | { |
1080 | bdc44640 | Andreas Färber | CPUState *cpu; |
1081 | 296af7c9 | Blue Swirl | |
1082 | 40daca54 | Alex Bligh | qemu_clock_enable(QEMU_CLOCK_VIRTUAL, true);
|
1083 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1084 | 182735ef | Andreas Färber | cpu_resume(cpu); |
1085 | 296af7c9 | Blue Swirl | } |
1086 | 296af7c9 | Blue Swirl | } |
1087 | 296af7c9 | Blue Swirl | |
1088 | e5ab30a2 | Andreas Färber | static void qemu_tcg_init_vcpu(CPUState *cpu) |
1089 | 296af7c9 | Blue Swirl | { |
1090 | 296af7c9 | Blue Swirl | /* share a single thread for all cpus with TCG */
|
1091 | 296af7c9 | Blue Swirl | if (!tcg_cpu_thread) {
|
1092 | 814e612e | Andreas Färber | cpu->thread = g_malloc0(sizeof(QemuThread));
|
1093 | f5c121b8 | Andreas Färber | cpu->halt_cond = g_malloc0(sizeof(QemuCond));
|
1094 | f5c121b8 | Andreas Färber | qemu_cond_init(cpu->halt_cond); |
1095 | f5c121b8 | Andreas Färber | tcg_halt_cond = cpu->halt_cond; |
1096 | c3586ba7 | Andreas Färber | qemu_thread_create(cpu->thread, qemu_tcg_cpu_thread_fn, cpu, |
1097 | 1ecf47bf | Paolo Bonzini | QEMU_THREAD_JOINABLE); |
1098 | 1ecf47bf | Paolo Bonzini | #ifdef _WIN32
|
1099 | 814e612e | Andreas Färber | cpu->hThread = qemu_thread_get_handle(cpu->thread); |
1100 | 1ecf47bf | Paolo Bonzini | #endif
|
1101 | 61a46217 | Andreas Färber | while (!cpu->created) {
|
1102 | 18a85728 | Paolo Bonzini | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
1103 | 0ab07c62 | Jan Kiszka | } |
1104 | 814e612e | Andreas Färber | tcg_cpu_thread = cpu->thread; |
1105 | 296af7c9 | Blue Swirl | } else {
|
1106 | 814e612e | Andreas Färber | cpu->thread = tcg_cpu_thread; |
1107 | f5c121b8 | Andreas Färber | cpu->halt_cond = tcg_halt_cond; |
1108 | 296af7c9 | Blue Swirl | } |
1109 | 296af7c9 | Blue Swirl | } |
1110 | 296af7c9 | Blue Swirl | |
1111 | 48a106bd | Andreas Färber | static void qemu_kvm_start_vcpu(CPUState *cpu) |
1112 | 296af7c9 | Blue Swirl | { |
1113 | 814e612e | Andreas Färber | cpu->thread = g_malloc0(sizeof(QemuThread));
|
1114 | f5c121b8 | Andreas Färber | cpu->halt_cond = g_malloc0(sizeof(QemuCond));
|
1115 | f5c121b8 | Andreas Färber | qemu_cond_init(cpu->halt_cond); |
1116 | 48a106bd | Andreas Färber | qemu_thread_create(cpu->thread, qemu_kvm_cpu_thread_fn, cpu, |
1117 | 1ecf47bf | Paolo Bonzini | QEMU_THREAD_JOINABLE); |
1118 | 61a46217 | Andreas Färber | while (!cpu->created) {
|
1119 | 18a85728 | Paolo Bonzini | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
1120 | 0ab07c62 | Jan Kiszka | } |
1121 | 296af7c9 | Blue Swirl | } |
1122 | 296af7c9 | Blue Swirl | |
1123 | 10a9021d | Andreas Färber | static void qemu_dummy_start_vcpu(CPUState *cpu) |
1124 | c7f0f3b1 | Anthony Liguori | { |
1125 | 814e612e | Andreas Färber | cpu->thread = g_malloc0(sizeof(QemuThread));
|
1126 | f5c121b8 | Andreas Färber | cpu->halt_cond = g_malloc0(sizeof(QemuCond));
|
1127 | f5c121b8 | Andreas Färber | qemu_cond_init(cpu->halt_cond); |
1128 | 10a9021d | Andreas Färber | qemu_thread_create(cpu->thread, qemu_dummy_cpu_thread_fn, cpu, |
1129 | c7f0f3b1 | Anthony Liguori | QEMU_THREAD_JOINABLE); |
1130 | 61a46217 | Andreas Färber | while (!cpu->created) {
|
1131 | c7f0f3b1 | Anthony Liguori | qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); |
1132 | c7f0f3b1 | Anthony Liguori | } |
1133 | c7f0f3b1 | Anthony Liguori | } |
1134 | c7f0f3b1 | Anthony Liguori | |
1135 | c643bed9 | Andreas Färber | void qemu_init_vcpu(CPUState *cpu)
|
1136 | 296af7c9 | Blue Swirl | { |
1137 | ce3960eb | Andreas Färber | cpu->nr_cores = smp_cores; |
1138 | ce3960eb | Andreas Färber | cpu->nr_threads = smp_threads; |
1139 | f324e766 | Andreas Färber | cpu->stopped = true;
|
1140 | 0ab07c62 | Jan Kiszka | if (kvm_enabled()) {
|
1141 | 48a106bd | Andreas Färber | qemu_kvm_start_vcpu(cpu); |
1142 | c7f0f3b1 | Anthony Liguori | } else if (tcg_enabled()) { |
1143 | e5ab30a2 | Andreas Färber | qemu_tcg_init_vcpu(cpu); |
1144 | c7f0f3b1 | Anthony Liguori | } else {
|
1145 | 10a9021d | Andreas Färber | qemu_dummy_start_vcpu(cpu); |
1146 | 0ab07c62 | Jan Kiszka | } |
1147 | 296af7c9 | Blue Swirl | } |
1148 | 296af7c9 | Blue Swirl | |
1149 | b4a3d965 | Jan Kiszka | void cpu_stop_current(void) |
1150 | 296af7c9 | Blue Swirl | { |
1151 | 4917cf44 | Andreas Färber | if (current_cpu) {
|
1152 | 4917cf44 | Andreas Färber | current_cpu->stop = false;
|
1153 | 4917cf44 | Andreas Färber | current_cpu->stopped = true;
|
1154 | 4917cf44 | Andreas Färber | cpu_exit(current_cpu); |
1155 | 67bb172f | Paolo Bonzini | qemu_cond_signal(&qemu_pause_cond); |
1156 | b4a3d965 | Jan Kiszka | } |
1157 | 296af7c9 | Blue Swirl | } |
1158 | 296af7c9 | Blue Swirl | |
1159 | 56983463 | Kevin Wolf | int vm_stop(RunState state)
|
1160 | 296af7c9 | Blue Swirl | { |
1161 | aa723c23 | Juan Quintela | if (qemu_in_vcpu_thread()) {
|
1162 | 1dfb4dd9 | Luiz Capitulino | qemu_system_vmstop_request(state); |
1163 | 296af7c9 | Blue Swirl | /*
|
1164 | 296af7c9 | Blue Swirl | * FIXME: should not return to device code in case
|
1165 | 296af7c9 | Blue Swirl | * vm_stop() has been requested.
|
1166 | 296af7c9 | Blue Swirl | */
|
1167 | b4a3d965 | Jan Kiszka | cpu_stop_current(); |
1168 | 56983463 | Kevin Wolf | return 0; |
1169 | 296af7c9 | Blue Swirl | } |
1170 | 56983463 | Kevin Wolf | |
1171 | 56983463 | Kevin Wolf | return do_vm_stop(state);
|
1172 | 296af7c9 | Blue Swirl | } |
1173 | 296af7c9 | Blue Swirl | |
1174 | 8a9236f1 | Luiz Capitulino | /* does a state transition even if the VM is already stopped,
|
1175 | 8a9236f1 | Luiz Capitulino | current state is forgotten forever */
|
1176 | 56983463 | Kevin Wolf | int vm_stop_force_state(RunState state)
|
1177 | 8a9236f1 | Luiz Capitulino | { |
1178 | 8a9236f1 | Luiz Capitulino | if (runstate_is_running()) {
|
1179 | 56983463 | Kevin Wolf | return vm_stop(state);
|
1180 | 8a9236f1 | Luiz Capitulino | } else {
|
1181 | 8a9236f1 | Luiz Capitulino | runstate_set(state); |
1182 | 594a45ce | Kevin Wolf | /* Make sure to return an error if the flush in a previous vm_stop()
|
1183 | 594a45ce | Kevin Wolf | * failed. */
|
1184 | 594a45ce | Kevin Wolf | return bdrv_flush_all();
|
1185 | 8a9236f1 | Luiz Capitulino | } |
1186 | 8a9236f1 | Luiz Capitulino | } |
1187 | 8a9236f1 | Luiz Capitulino | |
1188 | 9349b4f9 | Andreas Färber | static int tcg_cpu_exec(CPUArchState *env) |
1189 | 296af7c9 | Blue Swirl | { |
1190 | 296af7c9 | Blue Swirl | int ret;
|
1191 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
1192 | 296af7c9 | Blue Swirl | int64_t ti; |
1193 | 296af7c9 | Blue Swirl | #endif
|
1194 | 296af7c9 | Blue Swirl | |
1195 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
1196 | 296af7c9 | Blue Swirl | ti = profile_getclock(); |
1197 | 296af7c9 | Blue Swirl | #endif
|
1198 | 296af7c9 | Blue Swirl | if (use_icount) {
|
1199 | 296af7c9 | Blue Swirl | int64_t count; |
1200 | ac70aafc | Alex Bligh | int64_t deadline; |
1201 | 296af7c9 | Blue Swirl | int decr;
|
1202 | 296af7c9 | Blue Swirl | qemu_icount -= (env->icount_decr.u16.low + env->icount_extra); |
1203 | 296af7c9 | Blue Swirl | env->icount_decr.u16.low = 0;
|
1204 | 296af7c9 | Blue Swirl | env->icount_extra = 0;
|
1205 | 40daca54 | Alex Bligh | deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL); |
1206 | ac70aafc | Alex Bligh | |
1207 | ac70aafc | Alex Bligh | /* Maintain prior (possibly buggy) behaviour where if no deadline
|
1208 | 40daca54 | Alex Bligh | * was set (as there is no QEMU_CLOCK_VIRTUAL timer) or it is more than
|
1209 | ac70aafc | Alex Bligh | * INT32_MAX nanoseconds ahead, we still use INT32_MAX
|
1210 | ac70aafc | Alex Bligh | * nanoseconds.
|
1211 | ac70aafc | Alex Bligh | */
|
1212 | ac70aafc | Alex Bligh | if ((deadline < 0) || (deadline > INT32_MAX)) { |
1213 | ac70aafc | Alex Bligh | deadline = INT32_MAX; |
1214 | ac70aafc | Alex Bligh | } |
1215 | ac70aafc | Alex Bligh | |
1216 | ac70aafc | Alex Bligh | count = qemu_icount_round(deadline); |
1217 | 296af7c9 | Blue Swirl | qemu_icount += count; |
1218 | 296af7c9 | Blue Swirl | decr = (count > 0xffff) ? 0xffff : count; |
1219 | 296af7c9 | Blue Swirl | count -= decr; |
1220 | 296af7c9 | Blue Swirl | env->icount_decr.u16.low = decr; |
1221 | 296af7c9 | Blue Swirl | env->icount_extra = count; |
1222 | 296af7c9 | Blue Swirl | } |
1223 | 296af7c9 | Blue Swirl | ret = cpu_exec(env); |
1224 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
1225 | 296af7c9 | Blue Swirl | qemu_time += profile_getclock() - ti; |
1226 | 296af7c9 | Blue Swirl | #endif
|
1227 | 296af7c9 | Blue Swirl | if (use_icount) {
|
1228 | 296af7c9 | Blue Swirl | /* Fold pending instructions back into the
|
1229 | 296af7c9 | Blue Swirl | instruction counter, and clear the interrupt flag. */
|
1230 | 296af7c9 | Blue Swirl | qemu_icount -= (env->icount_decr.u16.low |
1231 | 296af7c9 | Blue Swirl | + env->icount_extra); |
1232 | 296af7c9 | Blue Swirl | env->icount_decr.u32 = 0;
|
1233 | 296af7c9 | Blue Swirl | env->icount_extra = 0;
|
1234 | 296af7c9 | Blue Swirl | } |
1235 | 296af7c9 | Blue Swirl | return ret;
|
1236 | 296af7c9 | Blue Swirl | } |
1237 | 296af7c9 | Blue Swirl | |
1238 | bdb7ca67 | Jan Kiszka | static void tcg_exec_all(void) |
1239 | 296af7c9 | Blue Swirl | { |
1240 | 9a36085b | Jan Kiszka | int r;
|
1241 | 9a36085b | Jan Kiszka | |
1242 | 40daca54 | Alex Bligh | /* Account partial waits to QEMU_CLOCK_VIRTUAL. */
|
1243 | 40daca54 | Alex Bligh | qemu_clock_warp(QEMU_CLOCK_VIRTUAL); |
1244 | ab33fcda | Paolo Bonzini | |
1245 | 0ab07c62 | Jan Kiszka | if (next_cpu == NULL) { |
1246 | 296af7c9 | Blue Swirl | next_cpu = first_cpu; |
1247 | 0ab07c62 | Jan Kiszka | } |
1248 | bdc44640 | Andreas Färber | for (; next_cpu != NULL && !exit_request; next_cpu = CPU_NEXT(next_cpu)) { |
1249 | 182735ef | Andreas Färber | CPUState *cpu = next_cpu; |
1250 | 182735ef | Andreas Färber | CPUArchState *env = cpu->env_ptr; |
1251 | 296af7c9 | Blue Swirl | |
1252 | 40daca54 | Alex Bligh | qemu_clock_enable(QEMU_CLOCK_VIRTUAL, |
1253 | ed2803da | Andreas Färber | (cpu->singlestep_enabled & SSTEP_NOTIMER) == 0);
|
1254 | 296af7c9 | Blue Swirl | |
1255 | a1fcaa73 | Andreas Färber | if (cpu_can_run(cpu)) {
|
1256 | bdb7ca67 | Jan Kiszka | r = tcg_cpu_exec(env); |
1257 | 9a36085b | Jan Kiszka | if (r == EXCP_DEBUG) {
|
1258 | 91325046 | Andreas Färber | cpu_handle_guest_debug(cpu); |
1259 | 3c638d06 | Jan Kiszka | break;
|
1260 | 3c638d06 | Jan Kiszka | } |
1261 | f324e766 | Andreas Färber | } else if (cpu->stop || cpu->stopped) { |
1262 | 296af7c9 | Blue Swirl | break;
|
1263 | 296af7c9 | Blue Swirl | } |
1264 | 296af7c9 | Blue Swirl | } |
1265 | c629a4bc | Jan Kiszka | exit_request = 0;
|
1266 | 296af7c9 | Blue Swirl | } |
1267 | 296af7c9 | Blue Swirl | |
1268 | 296af7c9 | Blue Swirl | void set_numa_modes(void) |
1269 | 296af7c9 | Blue Swirl | { |
1270 | 1b1ed8dc | Andreas Färber | CPUState *cpu; |
1271 | 296af7c9 | Blue Swirl | int i;
|
1272 | 296af7c9 | Blue Swirl | |
1273 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1274 | 296af7c9 | Blue Swirl | for (i = 0; i < nb_numa_nodes; i++) { |
1275 | 55e5c285 | Andreas Färber | if (test_bit(cpu->cpu_index, node_cpumask[i])) {
|
1276 | 1b1ed8dc | Andreas Färber | cpu->numa_node = i; |
1277 | 296af7c9 | Blue Swirl | } |
1278 | 296af7c9 | Blue Swirl | } |
1279 | 296af7c9 | Blue Swirl | } |
1280 | 296af7c9 | Blue Swirl | } |
1281 | 296af7c9 | Blue Swirl | |
1282 | 9a78eead | Stefan Weil | void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg) |
1283 | 262353cb | Blue Swirl | { |
1284 | 262353cb | Blue Swirl | /* XXX: implement xxx_cpu_list for targets that still miss it */
|
1285 | e916cbf8 | Peter Maydell | #if defined(cpu_list)
|
1286 | e916cbf8 | Peter Maydell | cpu_list(f, cpu_fprintf); |
1287 | 262353cb | Blue Swirl | #endif
|
1288 | 262353cb | Blue Swirl | } |
1289 | de0b36b6 | Luiz Capitulino | |
1290 | de0b36b6 | Luiz Capitulino | CpuInfoList *qmp_query_cpus(Error **errp) |
1291 | de0b36b6 | Luiz Capitulino | { |
1292 | de0b36b6 | Luiz Capitulino | CpuInfoList *head = NULL, *cur_item = NULL; |
1293 | 182735ef | Andreas Färber | CPUState *cpu; |
1294 | de0b36b6 | Luiz Capitulino | |
1295 | bdc44640 | Andreas Färber | CPU_FOREACH(cpu) { |
1296 | de0b36b6 | Luiz Capitulino | CpuInfoList *info; |
1297 | 182735ef | Andreas Färber | #if defined(TARGET_I386)
|
1298 | 182735ef | Andreas Färber | X86CPU *x86_cpu = X86_CPU(cpu); |
1299 | 182735ef | Andreas Färber | CPUX86State *env = &x86_cpu->env; |
1300 | 182735ef | Andreas Färber | #elif defined(TARGET_PPC)
|
1301 | 182735ef | Andreas Färber | PowerPCCPU *ppc_cpu = POWERPC_CPU(cpu); |
1302 | 182735ef | Andreas Färber | CPUPPCState *env = &ppc_cpu->env; |
1303 | 182735ef | Andreas Färber | #elif defined(TARGET_SPARC)
|
1304 | 182735ef | Andreas Färber | SPARCCPU *sparc_cpu = SPARC_CPU(cpu); |
1305 | 182735ef | Andreas Färber | CPUSPARCState *env = &sparc_cpu->env; |
1306 | 182735ef | Andreas Färber | #elif defined(TARGET_MIPS)
|
1307 | 182735ef | Andreas Färber | MIPSCPU *mips_cpu = MIPS_CPU(cpu); |
1308 | 182735ef | Andreas Färber | CPUMIPSState *env = &mips_cpu->env; |
1309 | 182735ef | Andreas Färber | #endif
|
1310 | de0b36b6 | Luiz Capitulino | |
1311 | cb446eca | Andreas Färber | cpu_synchronize_state(cpu); |
1312 | de0b36b6 | Luiz Capitulino | |
1313 | de0b36b6 | Luiz Capitulino | info = g_malloc0(sizeof(*info));
|
1314 | de0b36b6 | Luiz Capitulino | info->value = g_malloc0(sizeof(*info->value));
|
1315 | 55e5c285 | Andreas Färber | info->value->CPU = cpu->cpu_index; |
1316 | 182735ef | Andreas Färber | info->value->current = (cpu == first_cpu); |
1317 | 259186a7 | Andreas Färber | info->value->halted = cpu->halted; |
1318 | 9f09e18a | Andreas Färber | info->value->thread_id = cpu->thread_id; |
1319 | de0b36b6 | Luiz Capitulino | #if defined(TARGET_I386)
|
1320 | de0b36b6 | Luiz Capitulino | info->value->has_pc = true;
|
1321 | de0b36b6 | Luiz Capitulino | info->value->pc = env->eip + env->segs[R_CS].base; |
1322 | de0b36b6 | Luiz Capitulino | #elif defined(TARGET_PPC)
|
1323 | de0b36b6 | Luiz Capitulino | info->value->has_nip = true;
|
1324 | de0b36b6 | Luiz Capitulino | info->value->nip = env->nip; |
1325 | de0b36b6 | Luiz Capitulino | #elif defined(TARGET_SPARC)
|
1326 | de0b36b6 | Luiz Capitulino | info->value->has_pc = true;
|
1327 | de0b36b6 | Luiz Capitulino | info->value->pc = env->pc; |
1328 | de0b36b6 | Luiz Capitulino | info->value->has_npc = true;
|
1329 | de0b36b6 | Luiz Capitulino | info->value->npc = env->npc; |
1330 | de0b36b6 | Luiz Capitulino | #elif defined(TARGET_MIPS)
|
1331 | de0b36b6 | Luiz Capitulino | info->value->has_PC = true;
|
1332 | de0b36b6 | Luiz Capitulino | info->value->PC = env->active_tc.PC; |
1333 | de0b36b6 | Luiz Capitulino | #endif
|
1334 | de0b36b6 | Luiz Capitulino | |
1335 | de0b36b6 | Luiz Capitulino | /* XXX: waiting for the qapi to support GSList */
|
1336 | de0b36b6 | Luiz Capitulino | if (!cur_item) {
|
1337 | de0b36b6 | Luiz Capitulino | head = cur_item = info; |
1338 | de0b36b6 | Luiz Capitulino | } else {
|
1339 | de0b36b6 | Luiz Capitulino | cur_item->next = info; |
1340 | de0b36b6 | Luiz Capitulino | cur_item = info; |
1341 | de0b36b6 | Luiz Capitulino | } |
1342 | de0b36b6 | Luiz Capitulino | } |
1343 | de0b36b6 | Luiz Capitulino | |
1344 | de0b36b6 | Luiz Capitulino | return head;
|
1345 | de0b36b6 | Luiz Capitulino | } |
1346 | 0cfd6a9a | Luiz Capitulino | |
1347 | 0cfd6a9a | Luiz Capitulino | void qmp_memsave(int64_t addr, int64_t size, const char *filename, |
1348 | 0cfd6a9a | Luiz Capitulino | bool has_cpu, int64_t cpu_index, Error **errp)
|
1349 | 0cfd6a9a | Luiz Capitulino | { |
1350 | 0cfd6a9a | Luiz Capitulino | FILE *f; |
1351 | 0cfd6a9a | Luiz Capitulino | uint32_t l; |
1352 | 55e5c285 | Andreas Färber | CPUState *cpu; |
1353 | 0cfd6a9a | Luiz Capitulino | uint8_t buf[1024];
|
1354 | 0cfd6a9a | Luiz Capitulino | |
1355 | 0cfd6a9a | Luiz Capitulino | if (!has_cpu) {
|
1356 | 0cfd6a9a | Luiz Capitulino | cpu_index = 0;
|
1357 | 0cfd6a9a | Luiz Capitulino | } |
1358 | 0cfd6a9a | Luiz Capitulino | |
1359 | 151d1322 | Andreas Färber | cpu = qemu_get_cpu(cpu_index); |
1360 | 151d1322 | Andreas Färber | if (cpu == NULL) { |
1361 | 0cfd6a9a | Luiz Capitulino | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
|
1362 | 0cfd6a9a | Luiz Capitulino | "a CPU number");
|
1363 | 0cfd6a9a | Luiz Capitulino | return;
|
1364 | 0cfd6a9a | Luiz Capitulino | } |
1365 | 0cfd6a9a | Luiz Capitulino | |
1366 | 0cfd6a9a | Luiz Capitulino | f = fopen(filename, "wb");
|
1367 | 0cfd6a9a | Luiz Capitulino | if (!f) {
|
1368 | 618da851 | Luiz Capitulino | error_setg_file_open(errp, errno, filename); |
1369 | 0cfd6a9a | Luiz Capitulino | return;
|
1370 | 0cfd6a9a | Luiz Capitulino | } |
1371 | 0cfd6a9a | Luiz Capitulino | |
1372 | 0cfd6a9a | Luiz Capitulino | while (size != 0) { |
1373 | 0cfd6a9a | Luiz Capitulino | l = sizeof(buf);
|
1374 | 0cfd6a9a | Luiz Capitulino | if (l > size)
|
1375 | 0cfd6a9a | Luiz Capitulino | l = size; |
1376 | f17ec444 | Andreas Färber | cpu_memory_rw_debug(cpu, addr, buf, l, 0);
|
1377 | 0cfd6a9a | Luiz Capitulino | if (fwrite(buf, 1, l, f) != l) { |
1378 | 0cfd6a9a | Luiz Capitulino | error_set(errp, QERR_IO_ERROR); |
1379 | 0cfd6a9a | Luiz Capitulino | goto exit;
|
1380 | 0cfd6a9a | Luiz Capitulino | } |
1381 | 0cfd6a9a | Luiz Capitulino | addr += l; |
1382 | 0cfd6a9a | Luiz Capitulino | size -= l; |
1383 | 0cfd6a9a | Luiz Capitulino | } |
1384 | 0cfd6a9a | Luiz Capitulino | |
1385 | 0cfd6a9a | Luiz Capitulino | exit:
|
1386 | 0cfd6a9a | Luiz Capitulino | fclose(f); |
1387 | 0cfd6a9a | Luiz Capitulino | } |
1388 | 6d3962bf | Luiz Capitulino | |
1389 | 6d3962bf | Luiz Capitulino | void qmp_pmemsave(int64_t addr, int64_t size, const char *filename, |
1390 | 6d3962bf | Luiz Capitulino | Error **errp) |
1391 | 6d3962bf | Luiz Capitulino | { |
1392 | 6d3962bf | Luiz Capitulino | FILE *f; |
1393 | 6d3962bf | Luiz Capitulino | uint32_t l; |
1394 | 6d3962bf | Luiz Capitulino | uint8_t buf[1024];
|
1395 | 6d3962bf | Luiz Capitulino | |
1396 | 6d3962bf | Luiz Capitulino | f = fopen(filename, "wb");
|
1397 | 6d3962bf | Luiz Capitulino | if (!f) {
|
1398 | 618da851 | Luiz Capitulino | error_setg_file_open(errp, errno, filename); |
1399 | 6d3962bf | Luiz Capitulino | return;
|
1400 | 6d3962bf | Luiz Capitulino | } |
1401 | 6d3962bf | Luiz Capitulino | |
1402 | 6d3962bf | Luiz Capitulino | while (size != 0) { |
1403 | 6d3962bf | Luiz Capitulino | l = sizeof(buf);
|
1404 | 6d3962bf | Luiz Capitulino | if (l > size)
|
1405 | 6d3962bf | Luiz Capitulino | l = size; |
1406 | 6d3962bf | Luiz Capitulino | cpu_physical_memory_rw(addr, buf, l, 0);
|
1407 | 6d3962bf | Luiz Capitulino | if (fwrite(buf, 1, l, f) != l) { |
1408 | 6d3962bf | Luiz Capitulino | error_set(errp, QERR_IO_ERROR); |
1409 | 6d3962bf | Luiz Capitulino | goto exit;
|
1410 | 6d3962bf | Luiz Capitulino | } |
1411 | 6d3962bf | Luiz Capitulino | addr += l; |
1412 | 6d3962bf | Luiz Capitulino | size -= l; |
1413 | 6d3962bf | Luiz Capitulino | } |
1414 | 6d3962bf | Luiz Capitulino | |
1415 | 6d3962bf | Luiz Capitulino | exit:
|
1416 | 6d3962bf | Luiz Capitulino | fclose(f); |
1417 | 6d3962bf | Luiz Capitulino | } |
1418 | ab49ab5c | Luiz Capitulino | |
1419 | ab49ab5c | Luiz Capitulino | void qmp_inject_nmi(Error **errp)
|
1420 | ab49ab5c | Luiz Capitulino | { |
1421 | ab49ab5c | Luiz Capitulino | #if defined(TARGET_I386)
|
1422 | 182735ef | Andreas Färber | CPUState *cs; |
1423 | 182735ef | Andreas Färber | |
1424 | bdc44640 | Andreas Färber | CPU_FOREACH(cs) { |
1425 | 182735ef | Andreas Färber | X86CPU *cpu = X86_CPU(cs); |
1426 | 182735ef | Andreas Färber | CPUX86State *env = &cpu->env; |
1427 | ab49ab5c | Luiz Capitulino | |
1428 | 02c09195 | Jan Kiszka | if (!env->apic_state) {
|
1429 | 182735ef | Andreas Färber | cpu_interrupt(cs, CPU_INTERRUPT_NMI); |
1430 | 02c09195 | Jan Kiszka | } else {
|
1431 | 02c09195 | Jan Kiszka | apic_deliver_nmi(env->apic_state); |
1432 | 02c09195 | Jan Kiszka | } |
1433 | ab49ab5c | Luiz Capitulino | } |
1434 | 7f7f9752 | Eugene (jno) Dvurechenski | #elif defined(TARGET_S390X)
|
1435 | 7f7f9752 | Eugene (jno) Dvurechenski | CPUState *cs; |
1436 | 7f7f9752 | Eugene (jno) Dvurechenski | S390CPU *cpu; |
1437 | 7f7f9752 | Eugene (jno) Dvurechenski | |
1438 | bdc44640 | Andreas Färber | CPU_FOREACH(cs) { |
1439 | 7f7f9752 | Eugene (jno) Dvurechenski | cpu = S390_CPU(cs); |
1440 | 7f7f9752 | Eugene (jno) Dvurechenski | if (cpu->env.cpu_num == monitor_get_cpu_index()) {
|
1441 | 7f7f9752 | Eugene (jno) Dvurechenski | if (s390_cpu_restart(S390_CPU(cs)) == -1) { |
1442 | 7f7f9752 | Eugene (jno) Dvurechenski | error_set(errp, QERR_UNSUPPORTED); |
1443 | 7f7f9752 | Eugene (jno) Dvurechenski | return;
|
1444 | 7f7f9752 | Eugene (jno) Dvurechenski | } |
1445 | 7f7f9752 | Eugene (jno) Dvurechenski | break;
|
1446 | 7f7f9752 | Eugene (jno) Dvurechenski | } |
1447 | 7f7f9752 | Eugene (jno) Dvurechenski | } |
1448 | ab49ab5c | Luiz Capitulino | #else
|
1449 | ab49ab5c | Luiz Capitulino | error_set(errp, QERR_UNSUPPORTED); |
1450 | ab49ab5c | Luiz Capitulino | #endif
|
1451 | ab49ab5c | Luiz Capitulino | } |