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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 | 296af7c9 | Blue Swirl | #include "monitor.h" |
29 | 296af7c9 | Blue Swirl | #include "sysemu.h" |
30 | 296af7c9 | Blue Swirl | #include "gdbstub.h" |
31 | 296af7c9 | Blue Swirl | #include "dma.h" |
32 | 296af7c9 | Blue Swirl | #include "kvm.h" |
33 | 262ea18e | Jan Kiszka | #include "exec-all.h" |
34 | 296af7c9 | Blue Swirl | |
35 | 296af7c9 | Blue Swirl | #include "cpus.h" |
36 | a8486bc9 | Marcelo Tosatti | #include "compatfd.h" |
37 | 296af7c9 | Blue Swirl | |
38 | 7277e027 | Blue Swirl | #ifdef SIGRTMIN
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39 | 7277e027 | Blue Swirl | #define SIG_IPI (SIGRTMIN+4) |
40 | 7277e027 | Blue Swirl | #else
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41 | 7277e027 | Blue Swirl | #define SIG_IPI SIGUSR1
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42 | 7277e027 | Blue Swirl | #endif
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43 | 7277e027 | Blue Swirl | |
44 | 6d9cb73c | Jan Kiszka | #ifdef CONFIG_LINUX
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45 | 6d9cb73c | Jan Kiszka | |
46 | 6d9cb73c | Jan Kiszka | #include <sys/prctl.h> |
47 | 6d9cb73c | Jan Kiszka | |
48 | c0532a76 | Marcelo Tosatti | #ifndef PR_MCE_KILL
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49 | c0532a76 | Marcelo Tosatti | #define PR_MCE_KILL 33 |
50 | c0532a76 | Marcelo Tosatti | #endif
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51 | c0532a76 | Marcelo Tosatti | |
52 | 6d9cb73c | Jan Kiszka | #ifndef PR_MCE_KILL_SET
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53 | 6d9cb73c | Jan Kiszka | #define PR_MCE_KILL_SET 1 |
54 | 6d9cb73c | Jan Kiszka | #endif
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55 | 6d9cb73c | Jan Kiszka | |
56 | 6d9cb73c | Jan Kiszka | #ifndef PR_MCE_KILL_EARLY
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57 | 6d9cb73c | Jan Kiszka | #define PR_MCE_KILL_EARLY 1 |
58 | 6d9cb73c | Jan Kiszka | #endif
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59 | 6d9cb73c | Jan Kiszka | |
60 | 6d9cb73c | Jan Kiszka | #endif /* CONFIG_LINUX */ |
61 | 6d9cb73c | Jan Kiszka | |
62 | 296af7c9 | Blue Swirl | static CPUState *next_cpu;
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63 | 296af7c9 | Blue Swirl | |
64 | 296af7c9 | Blue Swirl | /***********************************************************/
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65 | 296af7c9 | Blue Swirl | void hw_error(const char *fmt, ...) |
66 | 296af7c9 | Blue Swirl | { |
67 | 296af7c9 | Blue Swirl | va_list ap; |
68 | 296af7c9 | Blue Swirl | CPUState *env; |
69 | 296af7c9 | Blue Swirl | |
70 | 296af7c9 | Blue Swirl | va_start(ap, fmt); |
71 | 296af7c9 | Blue Swirl | fprintf(stderr, "qemu: hardware error: ");
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72 | 296af7c9 | Blue Swirl | vfprintf(stderr, fmt, ap); |
73 | 296af7c9 | Blue Swirl | fprintf(stderr, "\n");
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74 | 296af7c9 | Blue Swirl | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
75 | 296af7c9 | Blue Swirl | fprintf(stderr, "CPU #%d:\n", env->cpu_index);
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76 | 296af7c9 | Blue Swirl | #ifdef TARGET_I386
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77 | 296af7c9 | Blue Swirl | cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU); |
78 | 296af7c9 | Blue Swirl | #else
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79 | 296af7c9 | Blue Swirl | cpu_dump_state(env, stderr, fprintf, 0);
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80 | 296af7c9 | Blue Swirl | #endif
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81 | 296af7c9 | Blue Swirl | } |
82 | 296af7c9 | Blue Swirl | va_end(ap); |
83 | 296af7c9 | Blue Swirl | abort(); |
84 | 296af7c9 | Blue Swirl | } |
85 | 296af7c9 | Blue Swirl | |
86 | 296af7c9 | Blue Swirl | void cpu_synchronize_all_states(void) |
87 | 296af7c9 | Blue Swirl | { |
88 | 296af7c9 | Blue Swirl | CPUState *cpu; |
89 | 296af7c9 | Blue Swirl | |
90 | 296af7c9 | Blue Swirl | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
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91 | 296af7c9 | Blue Swirl | cpu_synchronize_state(cpu); |
92 | 296af7c9 | Blue Swirl | } |
93 | 296af7c9 | Blue Swirl | } |
94 | 296af7c9 | Blue Swirl | |
95 | 296af7c9 | Blue Swirl | void cpu_synchronize_all_post_reset(void) |
96 | 296af7c9 | Blue Swirl | { |
97 | 296af7c9 | Blue Swirl | CPUState *cpu; |
98 | 296af7c9 | Blue Swirl | |
99 | 296af7c9 | Blue Swirl | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
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100 | 296af7c9 | Blue Swirl | cpu_synchronize_post_reset(cpu); |
101 | 296af7c9 | Blue Swirl | } |
102 | 296af7c9 | Blue Swirl | } |
103 | 296af7c9 | Blue Swirl | |
104 | 296af7c9 | Blue Swirl | void cpu_synchronize_all_post_init(void) |
105 | 296af7c9 | Blue Swirl | { |
106 | 296af7c9 | Blue Swirl | CPUState *cpu; |
107 | 296af7c9 | Blue Swirl | |
108 | 296af7c9 | Blue Swirl | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
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109 | 296af7c9 | Blue Swirl | cpu_synchronize_post_init(cpu); |
110 | 296af7c9 | Blue Swirl | } |
111 | 296af7c9 | Blue Swirl | } |
112 | 296af7c9 | Blue Swirl | |
113 | 3ae9501c | Marcelo Tosatti | int cpu_is_stopped(CPUState *env)
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114 | 3ae9501c | Marcelo Tosatti | { |
115 | 3ae9501c | Marcelo Tosatti | return !vm_running || env->stopped;
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116 | 3ae9501c | Marcelo Tosatti | } |
117 | 3ae9501c | Marcelo Tosatti | |
118 | 296af7c9 | Blue Swirl | static void do_vm_stop(int reason) |
119 | 296af7c9 | Blue Swirl | { |
120 | 296af7c9 | Blue Swirl | if (vm_running) {
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121 | 296af7c9 | Blue Swirl | cpu_disable_ticks(); |
122 | 296af7c9 | Blue Swirl | vm_running = 0;
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123 | 296af7c9 | Blue Swirl | pause_all_vcpus(); |
124 | 296af7c9 | Blue Swirl | vm_state_notify(0, reason);
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125 | 55df6f33 | Michael S. Tsirkin | qemu_aio_flush(); |
126 | 55df6f33 | Michael S. Tsirkin | bdrv_flush_all(); |
127 | 296af7c9 | Blue Swirl | monitor_protocol_event(QEVENT_STOP, NULL);
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128 | 296af7c9 | Blue Swirl | } |
129 | 296af7c9 | Blue Swirl | } |
130 | 296af7c9 | Blue Swirl | |
131 | 296af7c9 | Blue Swirl | static int cpu_can_run(CPUState *env) |
132 | 296af7c9 | Blue Swirl | { |
133 | 296af7c9 | Blue Swirl | if (env->stop)
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134 | 296af7c9 | Blue Swirl | return 0; |
135 | 55274a30 | Paolo Bonzini | if (env->stopped || !vm_running)
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136 | 296af7c9 | Blue Swirl | return 0; |
137 | 296af7c9 | Blue Swirl | return 1; |
138 | 296af7c9 | Blue Swirl | } |
139 | 296af7c9 | Blue Swirl | |
140 | 296af7c9 | Blue Swirl | static int cpu_has_work(CPUState *env) |
141 | 296af7c9 | Blue Swirl | { |
142 | 296af7c9 | Blue Swirl | if (env->stop)
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143 | 296af7c9 | Blue Swirl | return 1; |
144 | e82bcec2 | Marcelo Tosatti | if (env->queued_work_first)
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145 | e82bcec2 | Marcelo Tosatti | return 1; |
146 | 55274a30 | Paolo Bonzini | if (env->stopped || !vm_running)
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147 | 296af7c9 | Blue Swirl | return 0; |
148 | 296af7c9 | Blue Swirl | if (!env->halted)
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149 | 296af7c9 | Blue Swirl | return 1; |
150 | 296af7c9 | Blue Swirl | if (qemu_cpu_has_work(env))
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151 | 296af7c9 | Blue Swirl | return 1; |
152 | 296af7c9 | Blue Swirl | return 0; |
153 | 296af7c9 | Blue Swirl | } |
154 | 296af7c9 | Blue Swirl | |
155 | 472fb0c4 | Jan Kiszka | static int any_cpu_has_work(void) |
156 | 296af7c9 | Blue Swirl | { |
157 | 296af7c9 | Blue Swirl | CPUState *env; |
158 | 296af7c9 | Blue Swirl | |
159 | 296af7c9 | Blue Swirl | for (env = first_cpu; env != NULL; env = env->next_cpu) |
160 | 296af7c9 | Blue Swirl | if (cpu_has_work(env))
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161 | 296af7c9 | Blue Swirl | return 1; |
162 | 296af7c9 | Blue Swirl | return 0; |
163 | 296af7c9 | Blue Swirl | } |
164 | 296af7c9 | Blue Swirl | |
165 | 3c638d06 | Jan Kiszka | static void cpu_debug_handler(CPUState *env) |
166 | 3c638d06 | Jan Kiszka | { |
167 | 3c638d06 | Jan Kiszka | gdb_set_stop_cpu(env); |
168 | 3c638d06 | Jan Kiszka | debug_requested = EXCP_DEBUG; |
169 | 3c638d06 | Jan Kiszka | vm_stop(EXCP_DEBUG); |
170 | 3c638d06 | Jan Kiszka | } |
171 | 3c638d06 | Jan Kiszka | |
172 | 6d9cb73c | Jan Kiszka | #ifdef CONFIG_LINUX
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173 | 6d9cb73c | Jan Kiszka | static void sigbus_reraise(void) |
174 | 6d9cb73c | Jan Kiszka | { |
175 | 6d9cb73c | Jan Kiszka | sigset_t set; |
176 | 6d9cb73c | Jan Kiszka | struct sigaction action;
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177 | 6d9cb73c | Jan Kiszka | |
178 | 6d9cb73c | Jan Kiszka | memset(&action, 0, sizeof(action)); |
179 | 6d9cb73c | Jan Kiszka | action.sa_handler = SIG_DFL; |
180 | 6d9cb73c | Jan Kiszka | if (!sigaction(SIGBUS, &action, NULL)) { |
181 | 6d9cb73c | Jan Kiszka | raise(SIGBUS); |
182 | 6d9cb73c | Jan Kiszka | sigemptyset(&set); |
183 | 6d9cb73c | Jan Kiszka | sigaddset(&set, SIGBUS); |
184 | 6d9cb73c | Jan Kiszka | sigprocmask(SIG_UNBLOCK, &set, NULL);
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185 | 6d9cb73c | Jan Kiszka | } |
186 | 6d9cb73c | Jan Kiszka | perror("Failed to re-raise SIGBUS!\n");
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187 | 6d9cb73c | Jan Kiszka | abort(); |
188 | 6d9cb73c | Jan Kiszka | } |
189 | 6d9cb73c | Jan Kiszka | |
190 | 6d9cb73c | Jan Kiszka | static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo, |
191 | 6d9cb73c | Jan Kiszka | void *ctx)
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192 | 6d9cb73c | Jan Kiszka | { |
193 | 6d9cb73c | Jan Kiszka | if (kvm_on_sigbus(siginfo->ssi_code,
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194 | 6d9cb73c | Jan Kiszka | (void *)(intptr_t)siginfo->ssi_addr)) {
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195 | 6d9cb73c | Jan Kiszka | sigbus_reraise(); |
196 | 6d9cb73c | Jan Kiszka | } |
197 | 6d9cb73c | Jan Kiszka | } |
198 | 6d9cb73c | Jan Kiszka | |
199 | 6d9cb73c | Jan Kiszka | static void qemu_init_sigbus(void) |
200 | 6d9cb73c | Jan Kiszka | { |
201 | 6d9cb73c | Jan Kiszka | struct sigaction action;
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202 | 6d9cb73c | Jan Kiszka | |
203 | 6d9cb73c | Jan Kiszka | memset(&action, 0, sizeof(action)); |
204 | 6d9cb73c | Jan Kiszka | action.sa_flags = SA_SIGINFO; |
205 | 6d9cb73c | Jan Kiszka | action.sa_sigaction = (void (*)(int, siginfo_t*, void*))sigbus_handler; |
206 | 6d9cb73c | Jan Kiszka | sigaction(SIGBUS, &action, NULL);
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207 | 6d9cb73c | Jan Kiszka | |
208 | 6d9cb73c | Jan Kiszka | prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0); |
209 | 6d9cb73c | Jan Kiszka | } |
210 | 6d9cb73c | Jan Kiszka | |
211 | 6d9cb73c | Jan Kiszka | #else /* !CONFIG_LINUX */ |
212 | 6d9cb73c | Jan Kiszka | |
213 | 6d9cb73c | Jan Kiszka | static void qemu_init_sigbus(void) |
214 | 6d9cb73c | Jan Kiszka | { |
215 | 6d9cb73c | Jan Kiszka | } |
216 | 6d9cb73c | Jan Kiszka | #endif /* !CONFIG_LINUX */ |
217 | 6d9cb73c | Jan Kiszka | |
218 | 296af7c9 | Blue Swirl | #ifndef _WIN32
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219 | 296af7c9 | Blue Swirl | static int io_thread_fd = -1; |
220 | 296af7c9 | Blue Swirl | |
221 | 296af7c9 | Blue Swirl | static void qemu_event_increment(void) |
222 | 296af7c9 | Blue Swirl | { |
223 | 296af7c9 | Blue Swirl | /* Write 8 bytes to be compatible with eventfd. */
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224 | 26a82330 | Blue Swirl | static const uint64_t val = 1; |
225 | 296af7c9 | Blue Swirl | ssize_t ret; |
226 | 296af7c9 | Blue Swirl | |
227 | 296af7c9 | Blue Swirl | if (io_thread_fd == -1) |
228 | 296af7c9 | Blue Swirl | return;
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229 | 296af7c9 | Blue Swirl | |
230 | 296af7c9 | Blue Swirl | do {
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231 | 296af7c9 | Blue Swirl | ret = write(io_thread_fd, &val, sizeof(val));
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232 | 296af7c9 | Blue Swirl | } while (ret < 0 && errno == EINTR); |
233 | 296af7c9 | Blue Swirl | |
234 | 296af7c9 | Blue Swirl | /* EAGAIN is fine, a read must be pending. */
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235 | 296af7c9 | Blue Swirl | if (ret < 0 && errno != EAGAIN) { |
236 | 296af7c9 | Blue Swirl | fprintf(stderr, "qemu_event_increment: write() filed: %s\n",
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237 | 296af7c9 | Blue Swirl | strerror(errno)); |
238 | 296af7c9 | Blue Swirl | exit (1);
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239 | 296af7c9 | Blue Swirl | } |
240 | 296af7c9 | Blue Swirl | } |
241 | 296af7c9 | Blue Swirl | |
242 | 296af7c9 | Blue Swirl | static void qemu_event_read(void *opaque) |
243 | 296af7c9 | Blue Swirl | { |
244 | 296af7c9 | Blue Swirl | int fd = (unsigned long)opaque; |
245 | 296af7c9 | Blue Swirl | ssize_t len; |
246 | 296af7c9 | Blue Swirl | char buffer[512]; |
247 | 296af7c9 | Blue Swirl | |
248 | 296af7c9 | Blue Swirl | /* Drain the notify pipe. For eventfd, only 8 bytes will be read. */
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249 | 296af7c9 | Blue Swirl | do {
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250 | 296af7c9 | Blue Swirl | len = read(fd, buffer, sizeof(buffer));
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251 | 296af7c9 | Blue Swirl | } while ((len == -1 && errno == EINTR) || len == sizeof(buffer)); |
252 | 296af7c9 | Blue Swirl | } |
253 | 296af7c9 | Blue Swirl | |
254 | 296af7c9 | Blue Swirl | static int qemu_event_init(void) |
255 | 296af7c9 | Blue Swirl | { |
256 | 296af7c9 | Blue Swirl | int err;
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257 | 296af7c9 | Blue Swirl | int fds[2]; |
258 | 296af7c9 | Blue Swirl | |
259 | 296af7c9 | Blue Swirl | err = qemu_eventfd(fds); |
260 | 296af7c9 | Blue Swirl | if (err == -1) |
261 | 296af7c9 | Blue Swirl | return -errno;
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262 | 296af7c9 | Blue Swirl | |
263 | 296af7c9 | Blue Swirl | err = fcntl_setfl(fds[0], O_NONBLOCK);
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264 | 296af7c9 | Blue Swirl | if (err < 0) |
265 | 296af7c9 | Blue Swirl | goto fail;
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266 | 296af7c9 | Blue Swirl | |
267 | 296af7c9 | Blue Swirl | err = fcntl_setfl(fds[1], O_NONBLOCK);
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268 | 296af7c9 | Blue Swirl | if (err < 0) |
269 | 296af7c9 | Blue Swirl | goto fail;
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270 | 296af7c9 | Blue Swirl | |
271 | 296af7c9 | Blue Swirl | qemu_set_fd_handler2(fds[0], NULL, qemu_event_read, NULL, |
272 | 296af7c9 | Blue Swirl | (void *)(unsigned long)fds[0]); |
273 | 296af7c9 | Blue Swirl | |
274 | 296af7c9 | Blue Swirl | io_thread_fd = fds[1];
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275 | 296af7c9 | Blue Swirl | return 0; |
276 | 296af7c9 | Blue Swirl | |
277 | 296af7c9 | Blue Swirl | fail:
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278 | 296af7c9 | Blue Swirl | close(fds[0]);
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279 | 296af7c9 | Blue Swirl | close(fds[1]);
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280 | 296af7c9 | Blue Swirl | return err;
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281 | 296af7c9 | Blue Swirl | } |
282 | 55f8d6ac | Jan Kiszka | |
283 | 55f8d6ac | Jan Kiszka | static void dummy_signal(int sig) |
284 | 55f8d6ac | Jan Kiszka | { |
285 | 55f8d6ac | Jan Kiszka | } |
286 | 55f8d6ac | Jan Kiszka | |
287 | d0f294ce | Jan Kiszka | /* If we have signalfd, we mask out the signals we want to handle and then
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288 | d0f294ce | Jan Kiszka | * use signalfd to listen for them. We rely on whatever the current signal
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289 | d0f294ce | Jan Kiszka | * handler is to dispatch the signals when we receive them.
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290 | d0f294ce | Jan Kiszka | */
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291 | d0f294ce | Jan Kiszka | static void sigfd_handler(void *opaque) |
292 | d0f294ce | Jan Kiszka | { |
293 | d0f294ce | Jan Kiszka | int fd = (unsigned long) opaque; |
294 | d0f294ce | Jan Kiszka | struct qemu_signalfd_siginfo info;
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295 | d0f294ce | Jan Kiszka | struct sigaction action;
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296 | d0f294ce | Jan Kiszka | ssize_t len; |
297 | d0f294ce | Jan Kiszka | |
298 | d0f294ce | Jan Kiszka | while (1) { |
299 | d0f294ce | Jan Kiszka | do {
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300 | d0f294ce | Jan Kiszka | len = read(fd, &info, sizeof(info));
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301 | d0f294ce | Jan Kiszka | } while (len == -1 && errno == EINTR); |
302 | d0f294ce | Jan Kiszka | |
303 | d0f294ce | Jan Kiszka | if (len == -1 && errno == EAGAIN) { |
304 | d0f294ce | Jan Kiszka | break;
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305 | d0f294ce | Jan Kiszka | } |
306 | d0f294ce | Jan Kiszka | |
307 | d0f294ce | Jan Kiszka | if (len != sizeof(info)) { |
308 | d0f294ce | Jan Kiszka | printf("read from sigfd returned %zd: %m\n", len);
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309 | d0f294ce | Jan Kiszka | return;
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310 | d0f294ce | Jan Kiszka | } |
311 | d0f294ce | Jan Kiszka | |
312 | d0f294ce | Jan Kiszka | sigaction(info.ssi_signo, NULL, &action);
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313 | d0f294ce | Jan Kiszka | if ((action.sa_flags & SA_SIGINFO) && action.sa_sigaction) {
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314 | d0f294ce | Jan Kiszka | action.sa_sigaction(info.ssi_signo, |
315 | d0f294ce | Jan Kiszka | (siginfo_t *)&info, NULL);
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316 | d0f294ce | Jan Kiszka | } else if (action.sa_handler) { |
317 | d0f294ce | Jan Kiszka | action.sa_handler(info.ssi_signo); |
318 | d0f294ce | Jan Kiszka | } |
319 | d0f294ce | Jan Kiszka | } |
320 | d0f294ce | Jan Kiszka | } |
321 | d0f294ce | Jan Kiszka | |
322 | d0f294ce | Jan Kiszka | static int qemu_signalfd_init(sigset_t mask) |
323 | d0f294ce | Jan Kiszka | { |
324 | d0f294ce | Jan Kiszka | int sigfd;
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325 | d0f294ce | Jan Kiszka | |
326 | d0f294ce | Jan Kiszka | sigfd = qemu_signalfd(&mask); |
327 | d0f294ce | Jan Kiszka | if (sigfd == -1) { |
328 | d0f294ce | Jan Kiszka | fprintf(stderr, "failed to create signalfd\n");
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329 | d0f294ce | Jan Kiszka | return -errno;
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330 | d0f294ce | Jan Kiszka | } |
331 | d0f294ce | Jan Kiszka | |
332 | d0f294ce | Jan Kiszka | fcntl_setfl(sigfd, O_NONBLOCK); |
333 | d0f294ce | Jan Kiszka | |
334 | d0f294ce | Jan Kiszka | qemu_set_fd_handler2(sigfd, NULL, sigfd_handler, NULL, |
335 | d0f294ce | Jan Kiszka | (void *)(unsigned long) sigfd); |
336 | d0f294ce | Jan Kiszka | |
337 | d0f294ce | Jan Kiszka | return 0; |
338 | d0f294ce | Jan Kiszka | } |
339 | d0f294ce | Jan Kiszka | |
340 | 9a36085b | Jan Kiszka | static void qemu_kvm_eat_signals(CPUState *env) |
341 | 9a36085b | Jan Kiszka | { |
342 | 9a36085b | Jan Kiszka | struct timespec ts = { 0, 0 }; |
343 | 9a36085b | Jan Kiszka | siginfo_t siginfo; |
344 | 9a36085b | Jan Kiszka | sigset_t waitset; |
345 | 9a36085b | Jan Kiszka | sigset_t chkset; |
346 | 9a36085b | Jan Kiszka | int r;
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347 | 9a36085b | Jan Kiszka | |
348 | 9a36085b | Jan Kiszka | sigemptyset(&waitset); |
349 | 9a36085b | Jan Kiszka | sigaddset(&waitset, SIG_IPI); |
350 | 9a36085b | Jan Kiszka | sigaddset(&waitset, SIGBUS); |
351 | 9a36085b | Jan Kiszka | |
352 | 9a36085b | Jan Kiszka | do {
|
353 | 9a36085b | Jan Kiszka | r = sigtimedwait(&waitset, &siginfo, &ts); |
354 | 9a36085b | Jan Kiszka | if (r == -1 && !(errno == EAGAIN || errno == EINTR)) { |
355 | 9a36085b | Jan Kiszka | perror("sigtimedwait");
|
356 | 9a36085b | Jan Kiszka | exit(1);
|
357 | 9a36085b | Jan Kiszka | } |
358 | 9a36085b | Jan Kiszka | |
359 | 9a36085b | Jan Kiszka | switch (r) {
|
360 | 9a36085b | Jan Kiszka | case SIGBUS:
|
361 | 9a36085b | Jan Kiszka | if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr)) {
|
362 | 9a36085b | Jan Kiszka | sigbus_reraise(); |
363 | 9a36085b | Jan Kiszka | } |
364 | 9a36085b | Jan Kiszka | break;
|
365 | 9a36085b | Jan Kiszka | default:
|
366 | 9a36085b | Jan Kiszka | break;
|
367 | 9a36085b | Jan Kiszka | } |
368 | 9a36085b | Jan Kiszka | |
369 | 9a36085b | Jan Kiszka | r = sigpending(&chkset); |
370 | 9a36085b | Jan Kiszka | if (r == -1) { |
371 | 9a36085b | Jan Kiszka | perror("sigpending");
|
372 | 9a36085b | Jan Kiszka | exit(1);
|
373 | 9a36085b | Jan Kiszka | } |
374 | 9a36085b | Jan Kiszka | } while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS));
|
375 | de758970 | Jan Kiszka | |
376 | de758970 | Jan Kiszka | #ifndef CONFIG_IOTHREAD
|
377 | de758970 | Jan Kiszka | if (sigismember(&chkset, SIGIO) || sigismember(&chkset, SIGALRM)) {
|
378 | de758970 | Jan Kiszka | qemu_notify_event(); |
379 | de758970 | Jan Kiszka | } |
380 | de758970 | Jan Kiszka | #endif
|
381 | 9a36085b | Jan Kiszka | } |
382 | 9a36085b | Jan Kiszka | |
383 | 55f8d6ac | Jan Kiszka | #else /* _WIN32 */ |
384 | 55f8d6ac | Jan Kiszka | |
385 | 296af7c9 | Blue Swirl | HANDLE qemu_event_handle; |
386 | 296af7c9 | Blue Swirl | |
387 | 296af7c9 | Blue Swirl | static void dummy_event_handler(void *opaque) |
388 | 296af7c9 | Blue Swirl | { |
389 | 296af7c9 | Blue Swirl | } |
390 | 296af7c9 | Blue Swirl | |
391 | 296af7c9 | Blue Swirl | static int qemu_event_init(void) |
392 | 296af7c9 | Blue Swirl | { |
393 | 296af7c9 | Blue Swirl | qemu_event_handle = CreateEvent(NULL, FALSE, FALSE, NULL); |
394 | 296af7c9 | Blue Swirl | if (!qemu_event_handle) {
|
395 | 296af7c9 | Blue Swirl | fprintf(stderr, "Failed CreateEvent: %ld\n", GetLastError());
|
396 | 296af7c9 | Blue Swirl | return -1; |
397 | 296af7c9 | Blue Swirl | } |
398 | 296af7c9 | Blue Swirl | qemu_add_wait_object(qemu_event_handle, dummy_event_handler, NULL);
|
399 | 296af7c9 | Blue Swirl | return 0; |
400 | 296af7c9 | Blue Swirl | } |
401 | 296af7c9 | Blue Swirl | |
402 | 296af7c9 | Blue Swirl | static void qemu_event_increment(void) |
403 | 296af7c9 | Blue Swirl | { |
404 | 296af7c9 | Blue Swirl | if (!SetEvent(qemu_event_handle)) {
|
405 | 296af7c9 | Blue Swirl | fprintf(stderr, "qemu_event_increment: SetEvent failed: %ld\n",
|
406 | 296af7c9 | Blue Swirl | GetLastError()); |
407 | 296af7c9 | Blue Swirl | exit (1);
|
408 | 296af7c9 | Blue Swirl | } |
409 | 296af7c9 | Blue Swirl | } |
410 | 9a36085b | Jan Kiszka | |
411 | 9a36085b | Jan Kiszka | static void qemu_kvm_eat_signals(CPUState *env) |
412 | 9a36085b | Jan Kiszka | { |
413 | 9a36085b | Jan Kiszka | } |
414 | 55f8d6ac | Jan Kiszka | #endif /* _WIN32 */ |
415 | 296af7c9 | Blue Swirl | |
416 | 296af7c9 | Blue Swirl | #ifndef CONFIG_IOTHREAD
|
417 | ff48eb5f | Jan Kiszka | static void qemu_kvm_init_cpu_signals(CPUState *env) |
418 | ff48eb5f | Jan Kiszka | { |
419 | ff48eb5f | Jan Kiszka | #ifndef _WIN32
|
420 | ff48eb5f | Jan Kiszka | int r;
|
421 | ff48eb5f | Jan Kiszka | sigset_t set; |
422 | ff48eb5f | Jan Kiszka | struct sigaction sigact;
|
423 | ff48eb5f | Jan Kiszka | |
424 | ff48eb5f | Jan Kiszka | memset(&sigact, 0, sizeof(sigact)); |
425 | ff48eb5f | Jan Kiszka | sigact.sa_handler = dummy_signal; |
426 | ff48eb5f | Jan Kiszka | sigaction(SIG_IPI, &sigact, NULL);
|
427 | ff48eb5f | Jan Kiszka | |
428 | ff48eb5f | Jan Kiszka | sigemptyset(&set); |
429 | ff48eb5f | Jan Kiszka | sigaddset(&set, SIG_IPI); |
430 | de758970 | Jan Kiszka | sigaddset(&set, SIGIO); |
431 | de758970 | Jan Kiszka | sigaddset(&set, SIGALRM); |
432 | ff48eb5f | Jan Kiszka | pthread_sigmask(SIG_BLOCK, &set, NULL);
|
433 | ff48eb5f | Jan Kiszka | |
434 | ff48eb5f | Jan Kiszka | pthread_sigmask(SIG_BLOCK, NULL, &set);
|
435 | ff48eb5f | Jan Kiszka | sigdelset(&set, SIG_IPI); |
436 | ff48eb5f | Jan Kiszka | sigdelset(&set, SIGBUS); |
437 | de758970 | Jan Kiszka | sigdelset(&set, SIGIO); |
438 | de758970 | Jan Kiszka | sigdelset(&set, SIGALRM); |
439 | ff48eb5f | Jan Kiszka | r = kvm_set_signal_mask(env, &set); |
440 | ff48eb5f | Jan Kiszka | if (r) {
|
441 | ff48eb5f | Jan Kiszka | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r));
|
442 | ff48eb5f | Jan Kiszka | exit(1);
|
443 | ff48eb5f | Jan Kiszka | } |
444 | ff48eb5f | Jan Kiszka | #endif
|
445 | ff48eb5f | Jan Kiszka | } |
446 | ff48eb5f | Jan Kiszka | |
447 | de758970 | Jan Kiszka | #ifndef _WIN32
|
448 | de758970 | Jan Kiszka | static sigset_t block_synchronous_signals(void) |
449 | de758970 | Jan Kiszka | { |
450 | de758970 | Jan Kiszka | sigset_t set; |
451 | de758970 | Jan Kiszka | |
452 | de758970 | Jan Kiszka | sigemptyset(&set); |
453 | 6d9cb73c | Jan Kiszka | sigaddset(&set, SIGBUS); |
454 | de758970 | Jan Kiszka | if (kvm_enabled()) {
|
455 | de758970 | Jan Kiszka | /*
|
456 | de758970 | Jan Kiszka | * We need to process timer signals synchronously to avoid a race
|
457 | de758970 | Jan Kiszka | * between exit_request check and KVM vcpu entry.
|
458 | de758970 | Jan Kiszka | */
|
459 | de758970 | Jan Kiszka | sigaddset(&set, SIGIO); |
460 | de758970 | Jan Kiszka | sigaddset(&set, SIGALRM); |
461 | de758970 | Jan Kiszka | } |
462 | de758970 | Jan Kiszka | |
463 | de758970 | Jan Kiszka | return set;
|
464 | de758970 | Jan Kiszka | } |
465 | de758970 | Jan Kiszka | #endif
|
466 | de758970 | Jan Kiszka | |
467 | 296af7c9 | Blue Swirl | int qemu_init_main_loop(void) |
468 | 296af7c9 | Blue Swirl | { |
469 | d0f294ce | Jan Kiszka | #ifndef _WIN32
|
470 | d0f294ce | Jan Kiszka | sigset_t blocked_signals; |
471 | d0f294ce | Jan Kiszka | int ret;
|
472 | d0f294ce | Jan Kiszka | |
473 | de758970 | Jan Kiszka | blocked_signals = block_synchronous_signals(); |
474 | d0f294ce | Jan Kiszka | |
475 | d0f294ce | Jan Kiszka | ret = qemu_signalfd_init(blocked_signals); |
476 | d0f294ce | Jan Kiszka | if (ret) {
|
477 | d0f294ce | Jan Kiszka | return ret;
|
478 | d0f294ce | Jan Kiszka | } |
479 | d0f294ce | Jan Kiszka | #endif
|
480 | 3c638d06 | Jan Kiszka | cpu_set_debug_excp_handler(cpu_debug_handler); |
481 | 3c638d06 | Jan Kiszka | |
482 | 6d9cb73c | Jan Kiszka | qemu_init_sigbus(); |
483 | 6d9cb73c | Jan Kiszka | |
484 | 296af7c9 | Blue Swirl | return qemu_event_init();
|
485 | 296af7c9 | Blue Swirl | } |
486 | 296af7c9 | Blue Swirl | |
487 | 7277e027 | Blue Swirl | void qemu_main_loop_start(void) |
488 | 7277e027 | Blue Swirl | { |
489 | 7277e027 | Blue Swirl | } |
490 | 7277e027 | Blue Swirl | |
491 | 296af7c9 | Blue Swirl | void qemu_init_vcpu(void *_env) |
492 | 296af7c9 | Blue Swirl | { |
493 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
494 | 84b4915d | Jan Kiszka | int r;
|
495 | 296af7c9 | Blue Swirl | |
496 | 296af7c9 | Blue Swirl | env->nr_cores = smp_cores; |
497 | 296af7c9 | Blue Swirl | env->nr_threads = smp_threads; |
498 | 84b4915d | Jan Kiszka | |
499 | 84b4915d | Jan Kiszka | if (kvm_enabled()) {
|
500 | 84b4915d | Jan Kiszka | r = kvm_init_vcpu(env); |
501 | 84b4915d | Jan Kiszka | if (r < 0) { |
502 | 84b4915d | Jan Kiszka | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r));
|
503 | 84b4915d | Jan Kiszka | exit(1);
|
504 | 84b4915d | Jan Kiszka | } |
505 | ff48eb5f | Jan Kiszka | qemu_kvm_init_cpu_signals(env); |
506 | 84b4915d | Jan Kiszka | } |
507 | 296af7c9 | Blue Swirl | } |
508 | 296af7c9 | Blue Swirl | |
509 | 296af7c9 | Blue Swirl | int qemu_cpu_self(void *env) |
510 | 296af7c9 | Blue Swirl | { |
511 | 296af7c9 | Blue Swirl | return 1; |
512 | 296af7c9 | Blue Swirl | } |
513 | 296af7c9 | Blue Swirl | |
514 | e82bcec2 | Marcelo Tosatti | void run_on_cpu(CPUState *env, void (*func)(void *data), void *data) |
515 | e82bcec2 | Marcelo Tosatti | { |
516 | e82bcec2 | Marcelo Tosatti | func(data); |
517 | e82bcec2 | Marcelo Tosatti | } |
518 | e82bcec2 | Marcelo Tosatti | |
519 | 296af7c9 | Blue Swirl | void resume_all_vcpus(void) |
520 | 296af7c9 | Blue Swirl | { |
521 | 296af7c9 | Blue Swirl | } |
522 | 296af7c9 | Blue Swirl | |
523 | 296af7c9 | Blue Swirl | void pause_all_vcpus(void) |
524 | 296af7c9 | Blue Swirl | { |
525 | 296af7c9 | Blue Swirl | } |
526 | 296af7c9 | Blue Swirl | |
527 | 296af7c9 | Blue Swirl | void qemu_cpu_kick(void *env) |
528 | 296af7c9 | Blue Swirl | { |
529 | 296af7c9 | Blue Swirl | return;
|
530 | 296af7c9 | Blue Swirl | } |
531 | 296af7c9 | Blue Swirl | |
532 | 46d62fac | Jan Kiszka | void qemu_cpu_kick_self(void) |
533 | 46d62fac | Jan Kiszka | { |
534 | 46d62fac | Jan Kiszka | #ifndef _WIN32
|
535 | 46d62fac | Jan Kiszka | assert(cpu_single_env); |
536 | 46d62fac | Jan Kiszka | |
537 | 46d62fac | Jan Kiszka | raise(SIG_IPI); |
538 | 46d62fac | Jan Kiszka | #else
|
539 | 46d62fac | Jan Kiszka | abort(); |
540 | 46d62fac | Jan Kiszka | #endif
|
541 | 46d62fac | Jan Kiszka | } |
542 | 46d62fac | Jan Kiszka | |
543 | 296af7c9 | Blue Swirl | void qemu_notify_event(void) |
544 | 296af7c9 | Blue Swirl | { |
545 | 296af7c9 | Blue Swirl | CPUState *env = cpu_single_env; |
546 | 296af7c9 | Blue Swirl | |
547 | 296af7c9 | Blue Swirl | qemu_event_increment (); |
548 | 296af7c9 | Blue Swirl | if (env) {
|
549 | 296af7c9 | Blue Swirl | cpu_exit(env); |
550 | 296af7c9 | Blue Swirl | } |
551 | 296af7c9 | Blue Swirl | if (next_cpu && env != next_cpu) {
|
552 | 296af7c9 | Blue Swirl | cpu_exit(next_cpu); |
553 | 296af7c9 | Blue Swirl | } |
554 | 38145df2 | Jan Kiszka | exit_request = 1;
|
555 | 296af7c9 | Blue Swirl | } |
556 | 296af7c9 | Blue Swirl | |
557 | 296af7c9 | Blue Swirl | void qemu_mutex_lock_iothread(void) {} |
558 | 296af7c9 | Blue Swirl | void qemu_mutex_unlock_iothread(void) {} |
559 | 296af7c9 | Blue Swirl | |
560 | b4a3d965 | Jan Kiszka | void cpu_stop_current(void) |
561 | b4a3d965 | Jan Kiszka | { |
562 | b4a3d965 | Jan Kiszka | } |
563 | b4a3d965 | Jan Kiszka | |
564 | 296af7c9 | Blue Swirl | void vm_stop(int reason) |
565 | 296af7c9 | Blue Swirl | { |
566 | 296af7c9 | Blue Swirl | do_vm_stop(reason); |
567 | 296af7c9 | Blue Swirl | } |
568 | 296af7c9 | Blue Swirl | |
569 | 296af7c9 | Blue Swirl | #else /* CONFIG_IOTHREAD */ |
570 | 296af7c9 | Blue Swirl | |
571 | 296af7c9 | Blue Swirl | #include "qemu-thread.h" |
572 | 296af7c9 | Blue Swirl | |
573 | 296af7c9 | Blue Swirl | QemuMutex qemu_global_mutex; |
574 | 296af7c9 | Blue Swirl | static QemuMutex qemu_fair_mutex;
|
575 | 296af7c9 | Blue Swirl | |
576 | 296af7c9 | Blue Swirl | static QemuThread io_thread;
|
577 | 296af7c9 | Blue Swirl | |
578 | 296af7c9 | Blue Swirl | static QemuThread *tcg_cpu_thread;
|
579 | 296af7c9 | Blue Swirl | static QemuCond *tcg_halt_cond;
|
580 | 296af7c9 | Blue Swirl | |
581 | 296af7c9 | Blue Swirl | static int qemu_system_ready; |
582 | 296af7c9 | Blue Swirl | /* cpu creation */
|
583 | 296af7c9 | Blue Swirl | static QemuCond qemu_cpu_cond;
|
584 | 296af7c9 | Blue Swirl | /* system init */
|
585 | 296af7c9 | Blue Swirl | static QemuCond qemu_system_cond;
|
586 | 296af7c9 | Blue Swirl | static QemuCond qemu_pause_cond;
|
587 | e82bcec2 | Marcelo Tosatti | static QemuCond qemu_work_cond;
|
588 | 296af7c9 | Blue Swirl | |
589 | 55f8d6ac | Jan Kiszka | static void cpu_signal(int sig) |
590 | 55f8d6ac | Jan Kiszka | { |
591 | 55f8d6ac | Jan Kiszka | if (cpu_single_env) {
|
592 | 55f8d6ac | Jan Kiszka | cpu_exit(cpu_single_env); |
593 | 55f8d6ac | Jan Kiszka | } |
594 | 55f8d6ac | Jan Kiszka | exit_request = 1;
|
595 | 55f8d6ac | Jan Kiszka | } |
596 | 55f8d6ac | Jan Kiszka | |
597 | 55f8d6ac | Jan Kiszka | static void qemu_kvm_init_cpu_signals(CPUState *env) |
598 | 55f8d6ac | Jan Kiszka | { |
599 | 55f8d6ac | Jan Kiszka | int r;
|
600 | 55f8d6ac | Jan Kiszka | sigset_t set; |
601 | 55f8d6ac | Jan Kiszka | struct sigaction sigact;
|
602 | 55f8d6ac | Jan Kiszka | |
603 | 55f8d6ac | Jan Kiszka | memset(&sigact, 0, sizeof(sigact)); |
604 | 55f8d6ac | Jan Kiszka | sigact.sa_handler = dummy_signal; |
605 | 55f8d6ac | Jan Kiszka | sigaction(SIG_IPI, &sigact, NULL);
|
606 | 55f8d6ac | Jan Kiszka | |
607 | 55f8d6ac | Jan Kiszka | pthread_sigmask(SIG_BLOCK, NULL, &set);
|
608 | 55f8d6ac | Jan Kiszka | sigdelset(&set, SIG_IPI); |
609 | 55f8d6ac | Jan Kiszka | sigdelset(&set, SIGBUS); |
610 | 55f8d6ac | Jan Kiszka | r = kvm_set_signal_mask(env, &set); |
611 | 55f8d6ac | Jan Kiszka | if (r) {
|
612 | 55f8d6ac | Jan Kiszka | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r));
|
613 | 55f8d6ac | Jan Kiszka | exit(1);
|
614 | 55f8d6ac | Jan Kiszka | } |
615 | 55f8d6ac | Jan Kiszka | } |
616 | 55f8d6ac | Jan Kiszka | |
617 | 55f8d6ac | Jan Kiszka | static void qemu_tcg_init_cpu_signals(void) |
618 | 55f8d6ac | Jan Kiszka | { |
619 | 55f8d6ac | Jan Kiszka | sigset_t set; |
620 | 55f8d6ac | Jan Kiszka | struct sigaction sigact;
|
621 | 55f8d6ac | Jan Kiszka | |
622 | 55f8d6ac | Jan Kiszka | memset(&sigact, 0, sizeof(sigact)); |
623 | 55f8d6ac | Jan Kiszka | sigact.sa_handler = cpu_signal; |
624 | 55f8d6ac | Jan Kiszka | sigaction(SIG_IPI, &sigact, NULL);
|
625 | 55f8d6ac | Jan Kiszka | |
626 | 55f8d6ac | Jan Kiszka | sigemptyset(&set); |
627 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIG_IPI); |
628 | 55f8d6ac | Jan Kiszka | pthread_sigmask(SIG_UNBLOCK, &set, NULL);
|
629 | 55f8d6ac | Jan Kiszka | } |
630 | 55f8d6ac | Jan Kiszka | |
631 | 55f8d6ac | Jan Kiszka | static sigset_t block_io_signals(void) |
632 | 55f8d6ac | Jan Kiszka | { |
633 | 55f8d6ac | Jan Kiszka | sigset_t set; |
634 | 55f8d6ac | Jan Kiszka | |
635 | 55f8d6ac | Jan Kiszka | /* SIGUSR2 used by posix-aio-compat.c */
|
636 | 55f8d6ac | Jan Kiszka | sigemptyset(&set); |
637 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIGUSR2); |
638 | 55f8d6ac | Jan Kiszka | pthread_sigmask(SIG_UNBLOCK, &set, NULL);
|
639 | 55f8d6ac | Jan Kiszka | |
640 | 55f8d6ac | Jan Kiszka | sigemptyset(&set); |
641 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIGIO); |
642 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIGALRM); |
643 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIG_IPI); |
644 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIGBUS); |
645 | 55f8d6ac | Jan Kiszka | pthread_sigmask(SIG_BLOCK, &set, NULL);
|
646 | 55f8d6ac | Jan Kiszka | |
647 | 55f8d6ac | Jan Kiszka | return set;
|
648 | 55f8d6ac | Jan Kiszka | } |
649 | 55f8d6ac | Jan Kiszka | |
650 | 296af7c9 | Blue Swirl | int qemu_init_main_loop(void) |
651 | 296af7c9 | Blue Swirl | { |
652 | 296af7c9 | Blue Swirl | int ret;
|
653 | a8486bc9 | Marcelo Tosatti | sigset_t blocked_signals; |
654 | 296af7c9 | Blue Swirl | |
655 | 3c638d06 | Jan Kiszka | cpu_set_debug_excp_handler(cpu_debug_handler); |
656 | 3c638d06 | Jan Kiszka | |
657 | 6d9cb73c | Jan Kiszka | qemu_init_sigbus(); |
658 | 6d9cb73c | Jan Kiszka | |
659 | a8486bc9 | Marcelo Tosatti | blocked_signals = block_io_signals(); |
660 | a8486bc9 | Marcelo Tosatti | |
661 | a8486bc9 | Marcelo Tosatti | ret = qemu_signalfd_init(blocked_signals); |
662 | a8486bc9 | Marcelo Tosatti | if (ret)
|
663 | a8486bc9 | Marcelo Tosatti | return ret;
|
664 | a8486bc9 | Marcelo Tosatti | |
665 | a8486bc9 | Marcelo Tosatti | /* Note eventfd must be drained before signalfd handlers run */
|
666 | 296af7c9 | Blue Swirl | ret = qemu_event_init(); |
667 | 296af7c9 | Blue Swirl | if (ret)
|
668 | 296af7c9 | Blue Swirl | return ret;
|
669 | 296af7c9 | Blue Swirl | |
670 | 296af7c9 | Blue Swirl | qemu_cond_init(&qemu_pause_cond); |
671 | f8ca7b43 | Jan Kiszka | qemu_cond_init(&qemu_system_cond); |
672 | 296af7c9 | Blue Swirl | qemu_mutex_init(&qemu_fair_mutex); |
673 | 296af7c9 | Blue Swirl | qemu_mutex_init(&qemu_global_mutex); |
674 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
675 | 296af7c9 | Blue Swirl | |
676 | 296af7c9 | Blue Swirl | qemu_thread_self(&io_thread); |
677 | 296af7c9 | Blue Swirl | |
678 | 296af7c9 | Blue Swirl | return 0; |
679 | 296af7c9 | Blue Swirl | } |
680 | 296af7c9 | Blue Swirl | |
681 | 7277e027 | Blue Swirl | void qemu_main_loop_start(void) |
682 | 7277e027 | Blue Swirl | { |
683 | 7277e027 | Blue Swirl | qemu_system_ready = 1;
|
684 | 7277e027 | Blue Swirl | qemu_cond_broadcast(&qemu_system_cond); |
685 | 7277e027 | Blue Swirl | } |
686 | 7277e027 | Blue Swirl | |
687 | e82bcec2 | Marcelo Tosatti | void run_on_cpu(CPUState *env, void (*func)(void *data), void *data) |
688 | e82bcec2 | Marcelo Tosatti | { |
689 | e82bcec2 | Marcelo Tosatti | struct qemu_work_item wi;
|
690 | e82bcec2 | Marcelo Tosatti | |
691 | e82bcec2 | Marcelo Tosatti | if (qemu_cpu_self(env)) {
|
692 | e82bcec2 | Marcelo Tosatti | func(data); |
693 | e82bcec2 | Marcelo Tosatti | return;
|
694 | e82bcec2 | Marcelo Tosatti | } |
695 | e82bcec2 | Marcelo Tosatti | |
696 | e82bcec2 | Marcelo Tosatti | wi.func = func; |
697 | e82bcec2 | Marcelo Tosatti | wi.data = data; |
698 | e82bcec2 | Marcelo Tosatti | if (!env->queued_work_first)
|
699 | e82bcec2 | Marcelo Tosatti | env->queued_work_first = &wi; |
700 | e82bcec2 | Marcelo Tosatti | else
|
701 | e82bcec2 | Marcelo Tosatti | env->queued_work_last->next = &wi; |
702 | e82bcec2 | Marcelo Tosatti | env->queued_work_last = &wi; |
703 | e82bcec2 | Marcelo Tosatti | wi.next = NULL;
|
704 | e82bcec2 | Marcelo Tosatti | wi.done = false;
|
705 | e82bcec2 | Marcelo Tosatti | |
706 | e82bcec2 | Marcelo Tosatti | qemu_cpu_kick(env); |
707 | e82bcec2 | Marcelo Tosatti | while (!wi.done) {
|
708 | e82bcec2 | Marcelo Tosatti | CPUState *self_env = cpu_single_env; |
709 | e82bcec2 | Marcelo Tosatti | |
710 | e82bcec2 | Marcelo Tosatti | qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex); |
711 | e82bcec2 | Marcelo Tosatti | cpu_single_env = self_env; |
712 | e82bcec2 | Marcelo Tosatti | } |
713 | e82bcec2 | Marcelo Tosatti | } |
714 | e82bcec2 | Marcelo Tosatti | |
715 | e82bcec2 | Marcelo Tosatti | static void flush_queued_work(CPUState *env) |
716 | e82bcec2 | Marcelo Tosatti | { |
717 | e82bcec2 | Marcelo Tosatti | struct qemu_work_item *wi;
|
718 | e82bcec2 | Marcelo Tosatti | |
719 | e82bcec2 | Marcelo Tosatti | if (!env->queued_work_first)
|
720 | e82bcec2 | Marcelo Tosatti | return;
|
721 | e82bcec2 | Marcelo Tosatti | |
722 | e82bcec2 | Marcelo Tosatti | while ((wi = env->queued_work_first)) {
|
723 | e82bcec2 | Marcelo Tosatti | env->queued_work_first = wi->next; |
724 | e82bcec2 | Marcelo Tosatti | wi->func(wi->data); |
725 | e82bcec2 | Marcelo Tosatti | wi->done = true;
|
726 | e82bcec2 | Marcelo Tosatti | } |
727 | e82bcec2 | Marcelo Tosatti | env->queued_work_last = NULL;
|
728 | e82bcec2 | Marcelo Tosatti | qemu_cond_broadcast(&qemu_work_cond); |
729 | e82bcec2 | Marcelo Tosatti | } |
730 | e82bcec2 | Marcelo Tosatti | |
731 | 296af7c9 | Blue Swirl | static void qemu_wait_io_event_common(CPUState *env) |
732 | 296af7c9 | Blue Swirl | { |
733 | 296af7c9 | Blue Swirl | if (env->stop) {
|
734 | 296af7c9 | Blue Swirl | env->stop = 0;
|
735 | 296af7c9 | Blue Swirl | env->stopped = 1;
|
736 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_pause_cond); |
737 | 296af7c9 | Blue Swirl | } |
738 | e82bcec2 | Marcelo Tosatti | flush_queued_work(env); |
739 | aa2c364b | Jan Kiszka | env->thread_kicked = false;
|
740 | 296af7c9 | Blue Swirl | } |
741 | 296af7c9 | Blue Swirl | |
742 | 6cabe1f3 | Jan Kiszka | static void qemu_tcg_wait_io_event(void) |
743 | 296af7c9 | Blue Swirl | { |
744 | 6cabe1f3 | Jan Kiszka | CPUState *env; |
745 | 6cabe1f3 | Jan Kiszka | |
746 | 472fb0c4 | Jan Kiszka | while (!any_cpu_has_work())
|
747 | 6cabe1f3 | Jan Kiszka | qemu_cond_timedwait(tcg_halt_cond, &qemu_global_mutex, 1000);
|
748 | 296af7c9 | Blue Swirl | |
749 | 296af7c9 | Blue Swirl | qemu_mutex_unlock(&qemu_global_mutex); |
750 | 296af7c9 | Blue Swirl | |
751 | 296af7c9 | Blue Swirl | /*
|
752 | 296af7c9 | Blue Swirl | * Users of qemu_global_mutex can be starved, having no chance
|
753 | 296af7c9 | Blue Swirl | * to acquire it since this path will get to it first.
|
754 | 296af7c9 | Blue Swirl | * So use another lock to provide fairness.
|
755 | 296af7c9 | Blue Swirl | */
|
756 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_fair_mutex); |
757 | 296af7c9 | Blue Swirl | qemu_mutex_unlock(&qemu_fair_mutex); |
758 | 296af7c9 | Blue Swirl | |
759 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
760 | 6cabe1f3 | Jan Kiszka | |
761 | 6cabe1f3 | Jan Kiszka | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
762 | 6cabe1f3 | Jan Kiszka | qemu_wait_io_event_common(env); |
763 | 6cabe1f3 | Jan Kiszka | } |
764 | 296af7c9 | Blue Swirl | } |
765 | 296af7c9 | Blue Swirl | |
766 | 296af7c9 | Blue Swirl | static void qemu_kvm_wait_io_event(CPUState *env) |
767 | 296af7c9 | Blue Swirl | { |
768 | 296af7c9 | Blue Swirl | while (!cpu_has_work(env))
|
769 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(env->halt_cond, &qemu_global_mutex, 1000);
|
770 | 296af7c9 | Blue Swirl | |
771 | 5db5bdac | Jan Kiszka | qemu_kvm_eat_signals(env); |
772 | 296af7c9 | Blue Swirl | qemu_wait_io_event_common(env); |
773 | 296af7c9 | Blue Swirl | } |
774 | 296af7c9 | Blue Swirl | |
775 | 296af7c9 | Blue Swirl | static int qemu_cpu_exec(CPUState *env); |
776 | 296af7c9 | Blue Swirl | |
777 | 296af7c9 | Blue Swirl | static void *kvm_cpu_thread_fn(void *arg) |
778 | 296af7c9 | Blue Swirl | { |
779 | 296af7c9 | Blue Swirl | CPUState *env = arg; |
780 | 84b4915d | Jan Kiszka | int r;
|
781 | 296af7c9 | Blue Swirl | |
782 | 6164e6d6 | Marcelo Tosatti | qemu_mutex_lock(&qemu_global_mutex); |
783 | 296af7c9 | Blue Swirl | qemu_thread_self(env->thread); |
784 | d31ae052 | Jan Kiszka | |
785 | 84b4915d | Jan Kiszka | r = kvm_init_vcpu(env); |
786 | 84b4915d | Jan Kiszka | if (r < 0) { |
787 | 84b4915d | Jan Kiszka | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r));
|
788 | 84b4915d | Jan Kiszka | exit(1);
|
789 | 84b4915d | Jan Kiszka | } |
790 | 296af7c9 | Blue Swirl | |
791 | 55f8d6ac | Jan Kiszka | qemu_kvm_init_cpu_signals(env); |
792 | 296af7c9 | Blue Swirl | |
793 | 296af7c9 | Blue Swirl | /* signal CPU creation */
|
794 | 296af7c9 | Blue Swirl | env->created = 1;
|
795 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_cpu_cond); |
796 | 296af7c9 | Blue Swirl | |
797 | 296af7c9 | Blue Swirl | /* and wait for machine initialization */
|
798 | 296af7c9 | Blue Swirl | while (!qemu_system_ready)
|
799 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_system_cond, &qemu_global_mutex, 100);
|
800 | 296af7c9 | Blue Swirl | |
801 | 296af7c9 | Blue Swirl | while (1) { |
802 | 296af7c9 | Blue Swirl | if (cpu_can_run(env))
|
803 | 296af7c9 | Blue Swirl | qemu_cpu_exec(env); |
804 | 296af7c9 | Blue Swirl | qemu_kvm_wait_io_event(env); |
805 | 296af7c9 | Blue Swirl | } |
806 | 296af7c9 | Blue Swirl | |
807 | 296af7c9 | Blue Swirl | return NULL; |
808 | 296af7c9 | Blue Swirl | } |
809 | 296af7c9 | Blue Swirl | |
810 | 296af7c9 | Blue Swirl | static void *tcg_cpu_thread_fn(void *arg) |
811 | 296af7c9 | Blue Swirl | { |
812 | 296af7c9 | Blue Swirl | CPUState *env = arg; |
813 | 296af7c9 | Blue Swirl | |
814 | 55f8d6ac | Jan Kiszka | qemu_tcg_init_cpu_signals(); |
815 | 296af7c9 | Blue Swirl | qemu_thread_self(env->thread); |
816 | 296af7c9 | Blue Swirl | |
817 | 296af7c9 | Blue Swirl | /* signal CPU creation */
|
818 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
819 | 296af7c9 | Blue Swirl | for (env = first_cpu; env != NULL; env = env->next_cpu) |
820 | 296af7c9 | Blue Swirl | env->created = 1;
|
821 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_cpu_cond); |
822 | 296af7c9 | Blue Swirl | |
823 | 296af7c9 | Blue Swirl | /* and wait for machine initialization */
|
824 | 296af7c9 | Blue Swirl | while (!qemu_system_ready)
|
825 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_system_cond, &qemu_global_mutex, 100);
|
826 | 296af7c9 | Blue Swirl | |
827 | 296af7c9 | Blue Swirl | while (1) { |
828 | 472fb0c4 | Jan Kiszka | cpu_exec_all(); |
829 | 6cabe1f3 | Jan Kiszka | qemu_tcg_wait_io_event(); |
830 | 296af7c9 | Blue Swirl | } |
831 | 296af7c9 | Blue Swirl | |
832 | 296af7c9 | Blue Swirl | return NULL; |
833 | 296af7c9 | Blue Swirl | } |
834 | 296af7c9 | Blue Swirl | |
835 | 296af7c9 | Blue Swirl | void qemu_cpu_kick(void *_env) |
836 | 296af7c9 | Blue Swirl | { |
837 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
838 | 296af7c9 | Blue Swirl | qemu_cond_broadcast(env->halt_cond); |
839 | aa2c364b | Jan Kiszka | if (!env->thread_kicked) {
|
840 | aa2c364b | Jan Kiszka | qemu_thread_signal(env->thread, SIG_IPI); |
841 | aa2c364b | Jan Kiszka | env->thread_kicked = true;
|
842 | aa2c364b | Jan Kiszka | } |
843 | 296af7c9 | Blue Swirl | } |
844 | 296af7c9 | Blue Swirl | |
845 | 46d62fac | Jan Kiszka | void qemu_cpu_kick_self(void) |
846 | 46d62fac | Jan Kiszka | { |
847 | 46d62fac | Jan Kiszka | assert(cpu_single_env); |
848 | 46d62fac | Jan Kiszka | |
849 | 46d62fac | Jan Kiszka | if (!cpu_single_env->thread_kicked) {
|
850 | 46d62fac | Jan Kiszka | qemu_thread_signal(cpu_single_env->thread, SIG_IPI); |
851 | 46d62fac | Jan Kiszka | cpu_single_env->thread_kicked = true;
|
852 | 46d62fac | Jan Kiszka | } |
853 | 46d62fac | Jan Kiszka | } |
854 | 46d62fac | Jan Kiszka | |
855 | 296af7c9 | Blue Swirl | int qemu_cpu_self(void *_env) |
856 | 296af7c9 | Blue Swirl | { |
857 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
858 | 296af7c9 | Blue Swirl | QemuThread this; |
859 | 296af7c9 | Blue Swirl | |
860 | 296af7c9 | Blue Swirl | qemu_thread_self(&this); |
861 | 296af7c9 | Blue Swirl | |
862 | 296af7c9 | Blue Swirl | return qemu_thread_equal(&this, env->thread);
|
863 | 296af7c9 | Blue Swirl | } |
864 | 296af7c9 | Blue Swirl | |
865 | 296af7c9 | Blue Swirl | void qemu_mutex_lock_iothread(void) |
866 | 296af7c9 | Blue Swirl | { |
867 | 296af7c9 | Blue Swirl | if (kvm_enabled()) {
|
868 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
869 | 1a28cac3 | Marcelo Tosatti | } else {
|
870 | 1a28cac3 | Marcelo Tosatti | qemu_mutex_lock(&qemu_fair_mutex); |
871 | 1a28cac3 | Marcelo Tosatti | if (qemu_mutex_trylock(&qemu_global_mutex)) {
|
872 | 1a28cac3 | Marcelo Tosatti | qemu_thread_signal(tcg_cpu_thread, SIG_IPI); |
873 | 1a28cac3 | Marcelo Tosatti | qemu_mutex_lock(&qemu_global_mutex); |
874 | 1a28cac3 | Marcelo Tosatti | } |
875 | 1a28cac3 | Marcelo Tosatti | qemu_mutex_unlock(&qemu_fair_mutex); |
876 | 1a28cac3 | Marcelo Tosatti | } |
877 | 296af7c9 | Blue Swirl | } |
878 | 296af7c9 | Blue Swirl | |
879 | 296af7c9 | Blue Swirl | void qemu_mutex_unlock_iothread(void) |
880 | 296af7c9 | Blue Swirl | { |
881 | 296af7c9 | Blue Swirl | qemu_mutex_unlock(&qemu_global_mutex); |
882 | 296af7c9 | Blue Swirl | } |
883 | 296af7c9 | Blue Swirl | |
884 | 296af7c9 | Blue Swirl | static int all_vcpus_paused(void) |
885 | 296af7c9 | Blue Swirl | { |
886 | 296af7c9 | Blue Swirl | CPUState *penv = first_cpu; |
887 | 296af7c9 | Blue Swirl | |
888 | 296af7c9 | Blue Swirl | while (penv) {
|
889 | 296af7c9 | Blue Swirl | if (!penv->stopped)
|
890 | 296af7c9 | Blue Swirl | return 0; |
891 | 296af7c9 | Blue Swirl | penv = (CPUState *)penv->next_cpu; |
892 | 296af7c9 | Blue Swirl | } |
893 | 296af7c9 | Blue Swirl | |
894 | 296af7c9 | Blue Swirl | return 1; |
895 | 296af7c9 | Blue Swirl | } |
896 | 296af7c9 | Blue Swirl | |
897 | 296af7c9 | Blue Swirl | void pause_all_vcpus(void) |
898 | 296af7c9 | Blue Swirl | { |
899 | 296af7c9 | Blue Swirl | CPUState *penv = first_cpu; |
900 | 296af7c9 | Blue Swirl | |
901 | 296af7c9 | Blue Swirl | while (penv) {
|
902 | 296af7c9 | Blue Swirl | penv->stop = 1;
|
903 | 296af7c9 | Blue Swirl | qemu_cpu_kick(penv); |
904 | 296af7c9 | Blue Swirl | penv = (CPUState *)penv->next_cpu; |
905 | 296af7c9 | Blue Swirl | } |
906 | 296af7c9 | Blue Swirl | |
907 | 296af7c9 | Blue Swirl | while (!all_vcpus_paused()) {
|
908 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_pause_cond, &qemu_global_mutex, 100);
|
909 | 296af7c9 | Blue Swirl | penv = first_cpu; |
910 | 296af7c9 | Blue Swirl | while (penv) {
|
911 | 1fbb22e5 | Marcelo Tosatti | qemu_cpu_kick(penv); |
912 | 296af7c9 | Blue Swirl | penv = (CPUState *)penv->next_cpu; |
913 | 296af7c9 | Blue Swirl | } |
914 | 296af7c9 | Blue Swirl | } |
915 | 296af7c9 | Blue Swirl | } |
916 | 296af7c9 | Blue Swirl | |
917 | 296af7c9 | Blue Swirl | void resume_all_vcpus(void) |
918 | 296af7c9 | Blue Swirl | { |
919 | 296af7c9 | Blue Swirl | CPUState *penv = first_cpu; |
920 | 296af7c9 | Blue Swirl | |
921 | 296af7c9 | Blue Swirl | while (penv) {
|
922 | 296af7c9 | Blue Swirl | penv->stop = 0;
|
923 | 296af7c9 | Blue Swirl | penv->stopped = 0;
|
924 | 296af7c9 | Blue Swirl | qemu_cpu_kick(penv); |
925 | 296af7c9 | Blue Swirl | penv = (CPUState *)penv->next_cpu; |
926 | 296af7c9 | Blue Swirl | } |
927 | 296af7c9 | Blue Swirl | } |
928 | 296af7c9 | Blue Swirl | |
929 | 296af7c9 | Blue Swirl | static void tcg_init_vcpu(void *_env) |
930 | 296af7c9 | Blue Swirl | { |
931 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
932 | 296af7c9 | Blue Swirl | /* share a single thread for all cpus with TCG */
|
933 | 296af7c9 | Blue Swirl | if (!tcg_cpu_thread) {
|
934 | 296af7c9 | Blue Swirl | env->thread = qemu_mallocz(sizeof(QemuThread));
|
935 | 296af7c9 | Blue Swirl | env->halt_cond = qemu_mallocz(sizeof(QemuCond));
|
936 | 296af7c9 | Blue Swirl | qemu_cond_init(env->halt_cond); |
937 | 296af7c9 | Blue Swirl | qemu_thread_create(env->thread, tcg_cpu_thread_fn, env); |
938 | 296af7c9 | Blue Swirl | while (env->created == 0) |
939 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
|
940 | 296af7c9 | Blue Swirl | tcg_cpu_thread = env->thread; |
941 | 296af7c9 | Blue Swirl | tcg_halt_cond = env->halt_cond; |
942 | 296af7c9 | Blue Swirl | } else {
|
943 | 296af7c9 | Blue Swirl | env->thread = tcg_cpu_thread; |
944 | 296af7c9 | Blue Swirl | env->halt_cond = tcg_halt_cond; |
945 | 296af7c9 | Blue Swirl | } |
946 | 296af7c9 | Blue Swirl | } |
947 | 296af7c9 | Blue Swirl | |
948 | 296af7c9 | Blue Swirl | static void kvm_start_vcpu(CPUState *env) |
949 | 296af7c9 | Blue Swirl | { |
950 | 296af7c9 | Blue Swirl | env->thread = qemu_mallocz(sizeof(QemuThread));
|
951 | 296af7c9 | Blue Swirl | env->halt_cond = qemu_mallocz(sizeof(QemuCond));
|
952 | 296af7c9 | Blue Swirl | qemu_cond_init(env->halt_cond); |
953 | 296af7c9 | Blue Swirl | qemu_thread_create(env->thread, kvm_cpu_thread_fn, env); |
954 | 296af7c9 | Blue Swirl | while (env->created == 0) |
955 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
|
956 | 296af7c9 | Blue Swirl | } |
957 | 296af7c9 | Blue Swirl | |
958 | 296af7c9 | Blue Swirl | void qemu_init_vcpu(void *_env) |
959 | 296af7c9 | Blue Swirl | { |
960 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
961 | 296af7c9 | Blue Swirl | |
962 | 296af7c9 | Blue Swirl | env->nr_cores = smp_cores; |
963 | 296af7c9 | Blue Swirl | env->nr_threads = smp_threads; |
964 | 296af7c9 | Blue Swirl | if (kvm_enabled())
|
965 | 296af7c9 | Blue Swirl | kvm_start_vcpu(env); |
966 | 296af7c9 | Blue Swirl | else
|
967 | 296af7c9 | Blue Swirl | tcg_init_vcpu(env); |
968 | 296af7c9 | Blue Swirl | } |
969 | 296af7c9 | Blue Swirl | |
970 | 296af7c9 | Blue Swirl | void qemu_notify_event(void) |
971 | 296af7c9 | Blue Swirl | { |
972 | 296af7c9 | Blue Swirl | qemu_event_increment(); |
973 | 296af7c9 | Blue Swirl | } |
974 | 296af7c9 | Blue Swirl | |
975 | 296af7c9 | Blue Swirl | static void qemu_system_vmstop_request(int reason) |
976 | 296af7c9 | Blue Swirl | { |
977 | 296af7c9 | Blue Swirl | vmstop_requested = reason; |
978 | 296af7c9 | Blue Swirl | qemu_notify_event(); |
979 | 296af7c9 | Blue Swirl | } |
980 | 296af7c9 | Blue Swirl | |
981 | b4a3d965 | Jan Kiszka | void cpu_stop_current(void) |
982 | b4a3d965 | Jan Kiszka | { |
983 | b4a3d965 | Jan Kiszka | if (cpu_single_env) {
|
984 | b4a3d965 | Jan Kiszka | cpu_single_env->stopped = 1;
|
985 | b4a3d965 | Jan Kiszka | cpu_exit(cpu_single_env); |
986 | b4a3d965 | Jan Kiszka | } |
987 | b4a3d965 | Jan Kiszka | } |
988 | b4a3d965 | Jan Kiszka | |
989 | 296af7c9 | Blue Swirl | void vm_stop(int reason) |
990 | 296af7c9 | Blue Swirl | { |
991 | 296af7c9 | Blue Swirl | QemuThread me; |
992 | 296af7c9 | Blue Swirl | qemu_thread_self(&me); |
993 | 296af7c9 | Blue Swirl | |
994 | 296af7c9 | Blue Swirl | if (!qemu_thread_equal(&me, &io_thread)) {
|
995 | 296af7c9 | Blue Swirl | qemu_system_vmstop_request(reason); |
996 | 296af7c9 | Blue Swirl | /*
|
997 | 296af7c9 | Blue Swirl | * FIXME: should not return to device code in case
|
998 | 296af7c9 | Blue Swirl | * vm_stop() has been requested.
|
999 | 296af7c9 | Blue Swirl | */
|
1000 | b4a3d965 | Jan Kiszka | cpu_stop_current(); |
1001 | 296af7c9 | Blue Swirl | return;
|
1002 | 296af7c9 | Blue Swirl | } |
1003 | 296af7c9 | Blue Swirl | do_vm_stop(reason); |
1004 | 296af7c9 | Blue Swirl | } |
1005 | 296af7c9 | Blue Swirl | |
1006 | 296af7c9 | Blue Swirl | #endif
|
1007 | 296af7c9 | Blue Swirl | |
1008 | 296af7c9 | Blue Swirl | static int qemu_cpu_exec(CPUState *env) |
1009 | 296af7c9 | Blue Swirl | { |
1010 | 296af7c9 | Blue Swirl | int ret;
|
1011 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
1012 | 296af7c9 | Blue Swirl | int64_t ti; |
1013 | 296af7c9 | Blue Swirl | #endif
|
1014 | 296af7c9 | Blue Swirl | |
1015 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
1016 | 296af7c9 | Blue Swirl | ti = profile_getclock(); |
1017 | 296af7c9 | Blue Swirl | #endif
|
1018 | 296af7c9 | Blue Swirl | if (use_icount) {
|
1019 | 296af7c9 | Blue Swirl | int64_t count; |
1020 | 296af7c9 | Blue Swirl | int decr;
|
1021 | 296af7c9 | Blue Swirl | qemu_icount -= (env->icount_decr.u16.low + env->icount_extra); |
1022 | 296af7c9 | Blue Swirl | env->icount_decr.u16.low = 0;
|
1023 | 296af7c9 | Blue Swirl | env->icount_extra = 0;
|
1024 | 296af7c9 | Blue Swirl | count = qemu_icount_round (qemu_next_deadline()); |
1025 | 296af7c9 | Blue Swirl | qemu_icount += count; |
1026 | 296af7c9 | Blue Swirl | decr = (count > 0xffff) ? 0xffff : count; |
1027 | 296af7c9 | Blue Swirl | count -= decr; |
1028 | 296af7c9 | Blue Swirl | env->icount_decr.u16.low = decr; |
1029 | 296af7c9 | Blue Swirl | env->icount_extra = count; |
1030 | 296af7c9 | Blue Swirl | } |
1031 | 296af7c9 | Blue Swirl | ret = cpu_exec(env); |
1032 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
1033 | 296af7c9 | Blue Swirl | qemu_time += profile_getclock() - ti; |
1034 | 296af7c9 | Blue Swirl | #endif
|
1035 | 296af7c9 | Blue Swirl | if (use_icount) {
|
1036 | 296af7c9 | Blue Swirl | /* Fold pending instructions back into the
|
1037 | 296af7c9 | Blue Swirl | instruction counter, and clear the interrupt flag. */
|
1038 | 296af7c9 | Blue Swirl | qemu_icount -= (env->icount_decr.u16.low |
1039 | 296af7c9 | Blue Swirl | + env->icount_extra); |
1040 | 296af7c9 | Blue Swirl | env->icount_decr.u32 = 0;
|
1041 | 296af7c9 | Blue Swirl | env->icount_extra = 0;
|
1042 | 296af7c9 | Blue Swirl | } |
1043 | 296af7c9 | Blue Swirl | return ret;
|
1044 | 296af7c9 | Blue Swirl | } |
1045 | 296af7c9 | Blue Swirl | |
1046 | 472fb0c4 | Jan Kiszka | bool cpu_exec_all(void) |
1047 | 296af7c9 | Blue Swirl | { |
1048 | 9a36085b | Jan Kiszka | int r;
|
1049 | 9a36085b | Jan Kiszka | |
1050 | 296af7c9 | Blue Swirl | if (next_cpu == NULL) |
1051 | 296af7c9 | Blue Swirl | next_cpu = first_cpu; |
1052 | c629a4bc | Jan Kiszka | for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu) { |
1053 | 345f4426 | Jan Kiszka | CPUState *env = next_cpu; |
1054 | 296af7c9 | Blue Swirl | |
1055 | 296af7c9 | Blue Swirl | qemu_clock_enable(vm_clock, |
1056 | 345f4426 | Jan Kiszka | (env->singlestep_enabled & SSTEP_NOTIMER) == 0);
|
1057 | 296af7c9 | Blue Swirl | |
1058 | 296af7c9 | Blue Swirl | if (qemu_alarm_pending())
|
1059 | 296af7c9 | Blue Swirl | break;
|
1060 | 3c638d06 | Jan Kiszka | if (cpu_can_run(env)) {
|
1061 | 9a36085b | Jan Kiszka | r = qemu_cpu_exec(env); |
1062 | 9a36085b | Jan Kiszka | if (kvm_enabled()) {
|
1063 | 9a36085b | Jan Kiszka | qemu_kvm_eat_signals(env); |
1064 | 9a36085b | Jan Kiszka | } |
1065 | 9a36085b | Jan Kiszka | if (r == EXCP_DEBUG) {
|
1066 | 3c638d06 | Jan Kiszka | break;
|
1067 | 3c638d06 | Jan Kiszka | } |
1068 | 3c638d06 | Jan Kiszka | } else if (env->stop) { |
1069 | 296af7c9 | Blue Swirl | break;
|
1070 | 296af7c9 | Blue Swirl | } |
1071 | 296af7c9 | Blue Swirl | } |
1072 | c629a4bc | Jan Kiszka | exit_request = 0;
|
1073 | 472fb0c4 | Jan Kiszka | return any_cpu_has_work();
|
1074 | 296af7c9 | Blue Swirl | } |
1075 | 296af7c9 | Blue Swirl | |
1076 | 296af7c9 | Blue Swirl | void set_numa_modes(void) |
1077 | 296af7c9 | Blue Swirl | { |
1078 | 296af7c9 | Blue Swirl | CPUState *env; |
1079 | 296af7c9 | Blue Swirl | int i;
|
1080 | 296af7c9 | Blue Swirl | |
1081 | 296af7c9 | Blue Swirl | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1082 | 296af7c9 | Blue Swirl | for (i = 0; i < nb_numa_nodes; i++) { |
1083 | 296af7c9 | Blue Swirl | if (node_cpumask[i] & (1 << env->cpu_index)) { |
1084 | 296af7c9 | Blue Swirl | env->numa_node = i; |
1085 | 296af7c9 | Blue Swirl | } |
1086 | 296af7c9 | Blue Swirl | } |
1087 | 296af7c9 | Blue Swirl | } |
1088 | 296af7c9 | Blue Swirl | } |
1089 | 296af7c9 | Blue Swirl | |
1090 | 296af7c9 | Blue Swirl | void set_cpu_log(const char *optarg) |
1091 | 296af7c9 | Blue Swirl | { |
1092 | 296af7c9 | Blue Swirl | int mask;
|
1093 | 296af7c9 | Blue Swirl | const CPULogItem *item;
|
1094 | 296af7c9 | Blue Swirl | |
1095 | 296af7c9 | Blue Swirl | mask = cpu_str_to_log_mask(optarg); |
1096 | 296af7c9 | Blue Swirl | if (!mask) {
|
1097 | 296af7c9 | Blue Swirl | printf("Log items (comma separated):\n");
|
1098 | 296af7c9 | Blue Swirl | for (item = cpu_log_items; item->mask != 0; item++) { |
1099 | 296af7c9 | Blue Swirl | printf("%-10s %s\n", item->name, item->help);
|
1100 | 296af7c9 | Blue Swirl | } |
1101 | 296af7c9 | Blue Swirl | exit(1);
|
1102 | 296af7c9 | Blue Swirl | } |
1103 | 296af7c9 | Blue Swirl | cpu_set_log(mask); |
1104 | 296af7c9 | Blue Swirl | } |
1105 | 29e922b6 | Blue Swirl | |
1106 | 29e922b6 | Blue Swirl | /* Return the virtual CPU time, based on the instruction counter. */
|
1107 | 29e922b6 | Blue Swirl | int64_t cpu_get_icount(void)
|
1108 | 29e922b6 | Blue Swirl | { |
1109 | 29e922b6 | Blue Swirl | int64_t icount; |
1110 | 29e922b6 | Blue Swirl | CPUState *env = cpu_single_env;; |
1111 | 29e922b6 | Blue Swirl | |
1112 | 29e922b6 | Blue Swirl | icount = qemu_icount; |
1113 | 29e922b6 | Blue Swirl | if (env) {
|
1114 | 29e922b6 | Blue Swirl | if (!can_do_io(env)) {
|
1115 | 29e922b6 | Blue Swirl | fprintf(stderr, "Bad clock read\n");
|
1116 | 29e922b6 | Blue Swirl | } |
1117 | 29e922b6 | Blue Swirl | icount -= (env->icount_decr.u16.low + env->icount_extra); |
1118 | 29e922b6 | Blue Swirl | } |
1119 | 29e922b6 | Blue Swirl | return qemu_icount_bias + (icount << icount_time_shift);
|
1120 | 29e922b6 | Blue Swirl | } |
1121 | 262353cb | Blue Swirl | |
1122 | 9a78eead | Stefan Weil | void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg) |
1123 | 262353cb | Blue Swirl | { |
1124 | 262353cb | Blue Swirl | /* XXX: implement xxx_cpu_list for targets that still miss it */
|
1125 | 262353cb | Blue Swirl | #if defined(cpu_list_id)
|
1126 | 262353cb | Blue Swirl | cpu_list_id(f, cpu_fprintf, optarg); |
1127 | 262353cb | Blue Swirl | #elif defined(cpu_list)
|
1128 | 262353cb | Blue Swirl | cpu_list(f, cpu_fprintf); /* deprecated */
|
1129 | 262353cb | Blue Swirl | #endif
|
1130 | 262353cb | Blue Swirl | } |