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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 | 0ab07c62 | Jan Kiszka | if (env->stop) {
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134 | 296af7c9 | Blue Swirl | return 0; |
135 | 0ab07c62 | Jan Kiszka | } |
136 | 0ab07c62 | Jan Kiszka | if (env->stopped || !vm_running) {
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137 | 296af7c9 | Blue Swirl | return 0; |
138 | 0ab07c62 | Jan Kiszka | } |
139 | 296af7c9 | Blue Swirl | return 1; |
140 | 296af7c9 | Blue Swirl | } |
141 | 296af7c9 | Blue Swirl | |
142 | 16400322 | Jan Kiszka | static bool cpu_thread_is_idle(CPUState *env) |
143 | 296af7c9 | Blue Swirl | { |
144 | 16400322 | Jan Kiszka | if (env->stop || env->queued_work_first) {
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145 | 16400322 | Jan Kiszka | return false; |
146 | 16400322 | Jan Kiszka | } |
147 | 16400322 | Jan Kiszka | if (env->stopped || !vm_running) {
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148 | 16400322 | Jan Kiszka | return true; |
149 | 16400322 | Jan Kiszka | } |
150 | 16400322 | Jan Kiszka | if (!env->halted || qemu_cpu_has_work(env)) {
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151 | 16400322 | Jan Kiszka | return false; |
152 | 16400322 | Jan Kiszka | } |
153 | 16400322 | Jan Kiszka | return true; |
154 | 296af7c9 | Blue Swirl | } |
155 | 296af7c9 | Blue Swirl | |
156 | 16400322 | Jan Kiszka | static bool all_cpu_threads_idle(void) |
157 | 296af7c9 | Blue Swirl | { |
158 | 296af7c9 | Blue Swirl | CPUState *env; |
159 | 296af7c9 | Blue Swirl | |
160 | 16400322 | Jan Kiszka | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
161 | 16400322 | Jan Kiszka | if (!cpu_thread_is_idle(env)) {
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162 | 16400322 | Jan Kiszka | return false; |
163 | 16400322 | Jan Kiszka | } |
164 | 16400322 | Jan Kiszka | } |
165 | 16400322 | Jan Kiszka | return true; |
166 | 296af7c9 | Blue Swirl | } |
167 | 296af7c9 | Blue Swirl | |
168 | 3c638d06 | Jan Kiszka | static void cpu_debug_handler(CPUState *env) |
169 | 3c638d06 | Jan Kiszka | { |
170 | 3c638d06 | Jan Kiszka | gdb_set_stop_cpu(env); |
171 | 8cf71710 | Jan Kiszka | qemu_system_debug_request(); |
172 | 3c638d06 | Jan Kiszka | } |
173 | 3c638d06 | Jan Kiszka | |
174 | 6d9cb73c | Jan Kiszka | #ifdef CONFIG_LINUX
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175 | 6d9cb73c | Jan Kiszka | static void sigbus_reraise(void) |
176 | 6d9cb73c | Jan Kiszka | { |
177 | 6d9cb73c | Jan Kiszka | sigset_t set; |
178 | 6d9cb73c | Jan Kiszka | struct sigaction action;
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179 | 6d9cb73c | Jan Kiszka | |
180 | 6d9cb73c | Jan Kiszka | memset(&action, 0, sizeof(action)); |
181 | 6d9cb73c | Jan Kiszka | action.sa_handler = SIG_DFL; |
182 | 6d9cb73c | Jan Kiszka | if (!sigaction(SIGBUS, &action, NULL)) { |
183 | 6d9cb73c | Jan Kiszka | raise(SIGBUS); |
184 | 6d9cb73c | Jan Kiszka | sigemptyset(&set); |
185 | 6d9cb73c | Jan Kiszka | sigaddset(&set, SIGBUS); |
186 | 6d9cb73c | Jan Kiszka | sigprocmask(SIG_UNBLOCK, &set, NULL);
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187 | 6d9cb73c | Jan Kiszka | } |
188 | 6d9cb73c | Jan Kiszka | perror("Failed to re-raise SIGBUS!\n");
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189 | 6d9cb73c | Jan Kiszka | abort(); |
190 | 6d9cb73c | Jan Kiszka | } |
191 | 6d9cb73c | Jan Kiszka | |
192 | 6d9cb73c | Jan Kiszka | static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo, |
193 | 6d9cb73c | Jan Kiszka | void *ctx)
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194 | 6d9cb73c | Jan Kiszka | { |
195 | 6d9cb73c | Jan Kiszka | if (kvm_on_sigbus(siginfo->ssi_code,
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196 | 6d9cb73c | Jan Kiszka | (void *)(intptr_t)siginfo->ssi_addr)) {
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197 | 6d9cb73c | Jan Kiszka | sigbus_reraise(); |
198 | 6d9cb73c | Jan Kiszka | } |
199 | 6d9cb73c | Jan Kiszka | } |
200 | 6d9cb73c | Jan Kiszka | |
201 | 6d9cb73c | Jan Kiszka | static void qemu_init_sigbus(void) |
202 | 6d9cb73c | Jan Kiszka | { |
203 | 6d9cb73c | Jan Kiszka | struct sigaction action;
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204 | 6d9cb73c | Jan Kiszka | |
205 | 6d9cb73c | Jan Kiszka | memset(&action, 0, sizeof(action)); |
206 | 6d9cb73c | Jan Kiszka | action.sa_flags = SA_SIGINFO; |
207 | 6d9cb73c | Jan Kiszka | action.sa_sigaction = (void (*)(int, siginfo_t*, void*))sigbus_handler; |
208 | 6d9cb73c | Jan Kiszka | sigaction(SIGBUS, &action, NULL);
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209 | 6d9cb73c | Jan Kiszka | |
210 | 6d9cb73c | Jan Kiszka | prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0); |
211 | 6d9cb73c | Jan Kiszka | } |
212 | 6d9cb73c | Jan Kiszka | |
213 | 6d9cb73c | Jan Kiszka | #else /* !CONFIG_LINUX */ |
214 | 6d9cb73c | Jan Kiszka | |
215 | 6d9cb73c | Jan Kiszka | static void qemu_init_sigbus(void) |
216 | 6d9cb73c | Jan Kiszka | { |
217 | 6d9cb73c | Jan Kiszka | } |
218 | 6d9cb73c | Jan Kiszka | #endif /* !CONFIG_LINUX */ |
219 | 6d9cb73c | Jan Kiszka | |
220 | 296af7c9 | Blue Swirl | #ifndef _WIN32
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221 | 296af7c9 | Blue Swirl | static int io_thread_fd = -1; |
222 | 296af7c9 | Blue Swirl | |
223 | 296af7c9 | Blue Swirl | static void qemu_event_increment(void) |
224 | 296af7c9 | Blue Swirl | { |
225 | 296af7c9 | Blue Swirl | /* Write 8 bytes to be compatible with eventfd. */
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226 | 26a82330 | Blue Swirl | static const uint64_t val = 1; |
227 | 296af7c9 | Blue Swirl | ssize_t ret; |
228 | 296af7c9 | Blue Swirl | |
229 | 0ab07c62 | Jan Kiszka | if (io_thread_fd == -1) { |
230 | 296af7c9 | Blue Swirl | return;
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231 | 0ab07c62 | Jan Kiszka | } |
232 | 296af7c9 | Blue Swirl | do {
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233 | 296af7c9 | Blue Swirl | ret = write(io_thread_fd, &val, sizeof(val));
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234 | 296af7c9 | Blue Swirl | } while (ret < 0 && errno == EINTR); |
235 | 296af7c9 | Blue Swirl | |
236 | 296af7c9 | Blue Swirl | /* EAGAIN is fine, a read must be pending. */
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237 | 296af7c9 | Blue Swirl | if (ret < 0 && errno != EAGAIN) { |
238 | 296af7c9 | Blue Swirl | fprintf(stderr, "qemu_event_increment: write() filed: %s\n",
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239 | 296af7c9 | Blue Swirl | strerror(errno)); |
240 | 296af7c9 | Blue Swirl | exit (1);
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241 | 296af7c9 | Blue Swirl | } |
242 | 296af7c9 | Blue Swirl | } |
243 | 296af7c9 | Blue Swirl | |
244 | 296af7c9 | Blue Swirl | static void qemu_event_read(void *opaque) |
245 | 296af7c9 | Blue Swirl | { |
246 | 296af7c9 | Blue Swirl | int fd = (unsigned long)opaque; |
247 | 296af7c9 | Blue Swirl | ssize_t len; |
248 | 296af7c9 | Blue Swirl | char buffer[512]; |
249 | 296af7c9 | Blue Swirl | |
250 | 296af7c9 | Blue Swirl | /* Drain the notify pipe. For eventfd, only 8 bytes will be read. */
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251 | 296af7c9 | Blue Swirl | do {
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252 | 296af7c9 | Blue Swirl | len = read(fd, buffer, sizeof(buffer));
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253 | 296af7c9 | Blue Swirl | } while ((len == -1 && errno == EINTR) || len == sizeof(buffer)); |
254 | 296af7c9 | Blue Swirl | } |
255 | 296af7c9 | Blue Swirl | |
256 | 296af7c9 | Blue Swirl | static int qemu_event_init(void) |
257 | 296af7c9 | Blue Swirl | { |
258 | 296af7c9 | Blue Swirl | int err;
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259 | 296af7c9 | Blue Swirl | int fds[2]; |
260 | 296af7c9 | Blue Swirl | |
261 | 296af7c9 | Blue Swirl | err = qemu_eventfd(fds); |
262 | 0ab07c62 | Jan Kiszka | if (err == -1) { |
263 | 296af7c9 | Blue Swirl | return -errno;
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264 | 0ab07c62 | Jan Kiszka | } |
265 | 296af7c9 | Blue Swirl | err = fcntl_setfl(fds[0], O_NONBLOCK);
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266 | 0ab07c62 | Jan Kiszka | if (err < 0) { |
267 | 296af7c9 | Blue Swirl | goto fail;
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268 | 0ab07c62 | Jan Kiszka | } |
269 | 296af7c9 | Blue Swirl | err = fcntl_setfl(fds[1], O_NONBLOCK);
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270 | 0ab07c62 | Jan Kiszka | if (err < 0) { |
271 | 296af7c9 | Blue Swirl | goto fail;
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272 | 0ab07c62 | Jan Kiszka | } |
273 | 296af7c9 | Blue Swirl | qemu_set_fd_handler2(fds[0], NULL, qemu_event_read, NULL, |
274 | 296af7c9 | Blue Swirl | (void *)(unsigned long)fds[0]); |
275 | 296af7c9 | Blue Swirl | |
276 | 296af7c9 | Blue Swirl | io_thread_fd = fds[1];
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277 | 296af7c9 | Blue Swirl | return 0; |
278 | 296af7c9 | Blue Swirl | |
279 | 296af7c9 | Blue Swirl | fail:
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280 | 296af7c9 | Blue Swirl | close(fds[0]);
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281 | 296af7c9 | Blue Swirl | close(fds[1]);
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282 | 296af7c9 | Blue Swirl | return err;
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283 | 296af7c9 | Blue Swirl | } |
284 | 55f8d6ac | Jan Kiszka | |
285 | 55f8d6ac | Jan Kiszka | static void dummy_signal(int sig) |
286 | 55f8d6ac | Jan Kiszka | { |
287 | 55f8d6ac | Jan Kiszka | } |
288 | 55f8d6ac | Jan Kiszka | |
289 | d0f294ce | Jan Kiszka | /* If we have signalfd, we mask out the signals we want to handle and then
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290 | d0f294ce | Jan Kiszka | * use signalfd to listen for them. We rely on whatever the current signal
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291 | d0f294ce | Jan Kiszka | * handler is to dispatch the signals when we receive them.
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292 | d0f294ce | Jan Kiszka | */
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293 | d0f294ce | Jan Kiszka | static void sigfd_handler(void *opaque) |
294 | d0f294ce | Jan Kiszka | { |
295 | d0f294ce | Jan Kiszka | int fd = (unsigned long) opaque; |
296 | d0f294ce | Jan Kiszka | struct qemu_signalfd_siginfo info;
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297 | d0f294ce | Jan Kiszka | struct sigaction action;
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298 | d0f294ce | Jan Kiszka | ssize_t len; |
299 | d0f294ce | Jan Kiszka | |
300 | d0f294ce | Jan Kiszka | while (1) { |
301 | d0f294ce | Jan Kiszka | do {
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302 | d0f294ce | Jan Kiszka | len = read(fd, &info, sizeof(info));
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303 | d0f294ce | Jan Kiszka | } while (len == -1 && errno == EINTR); |
304 | d0f294ce | Jan Kiszka | |
305 | d0f294ce | Jan Kiszka | if (len == -1 && errno == EAGAIN) { |
306 | d0f294ce | Jan Kiszka | break;
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307 | d0f294ce | Jan Kiszka | } |
308 | d0f294ce | Jan Kiszka | |
309 | d0f294ce | Jan Kiszka | if (len != sizeof(info)) { |
310 | d0f294ce | Jan Kiszka | printf("read from sigfd returned %zd: %m\n", len);
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311 | d0f294ce | Jan Kiszka | return;
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312 | d0f294ce | Jan Kiszka | } |
313 | d0f294ce | Jan Kiszka | |
314 | d0f294ce | Jan Kiszka | sigaction(info.ssi_signo, NULL, &action);
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315 | d0f294ce | Jan Kiszka | if ((action.sa_flags & SA_SIGINFO) && action.sa_sigaction) {
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316 | d0f294ce | Jan Kiszka | action.sa_sigaction(info.ssi_signo, |
317 | d0f294ce | Jan Kiszka | (siginfo_t *)&info, NULL);
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318 | d0f294ce | Jan Kiszka | } else if (action.sa_handler) { |
319 | d0f294ce | Jan Kiszka | action.sa_handler(info.ssi_signo); |
320 | d0f294ce | Jan Kiszka | } |
321 | d0f294ce | Jan Kiszka | } |
322 | d0f294ce | Jan Kiszka | } |
323 | d0f294ce | Jan Kiszka | |
324 | d0f294ce | Jan Kiszka | static int qemu_signalfd_init(sigset_t mask) |
325 | d0f294ce | Jan Kiszka | { |
326 | d0f294ce | Jan Kiszka | int sigfd;
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327 | d0f294ce | Jan Kiszka | |
328 | d0f294ce | Jan Kiszka | sigfd = qemu_signalfd(&mask); |
329 | d0f294ce | Jan Kiszka | if (sigfd == -1) { |
330 | d0f294ce | Jan Kiszka | fprintf(stderr, "failed to create signalfd\n");
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331 | d0f294ce | Jan Kiszka | return -errno;
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332 | d0f294ce | Jan Kiszka | } |
333 | d0f294ce | Jan Kiszka | |
334 | d0f294ce | Jan Kiszka | fcntl_setfl(sigfd, O_NONBLOCK); |
335 | d0f294ce | Jan Kiszka | |
336 | d0f294ce | Jan Kiszka | qemu_set_fd_handler2(sigfd, NULL, sigfd_handler, NULL, |
337 | d0f294ce | Jan Kiszka | (void *)(unsigned long) sigfd); |
338 | d0f294ce | Jan Kiszka | |
339 | d0f294ce | Jan Kiszka | return 0; |
340 | d0f294ce | Jan Kiszka | } |
341 | d0f294ce | Jan Kiszka | |
342 | 9a36085b | Jan Kiszka | static void qemu_kvm_eat_signals(CPUState *env) |
343 | 9a36085b | Jan Kiszka | { |
344 | 9a36085b | Jan Kiszka | struct timespec ts = { 0, 0 }; |
345 | 9a36085b | Jan Kiszka | siginfo_t siginfo; |
346 | 9a36085b | Jan Kiszka | sigset_t waitset; |
347 | 9a36085b | Jan Kiszka | sigset_t chkset; |
348 | 9a36085b | Jan Kiszka | int r;
|
349 | 9a36085b | Jan Kiszka | |
350 | 9a36085b | Jan Kiszka | sigemptyset(&waitset); |
351 | 9a36085b | Jan Kiszka | sigaddset(&waitset, SIG_IPI); |
352 | 9a36085b | Jan Kiszka | sigaddset(&waitset, SIGBUS); |
353 | 9a36085b | Jan Kiszka | |
354 | 9a36085b | Jan Kiszka | do {
|
355 | 9a36085b | Jan Kiszka | r = sigtimedwait(&waitset, &siginfo, &ts); |
356 | 9a36085b | Jan Kiszka | if (r == -1 && !(errno == EAGAIN || errno == EINTR)) { |
357 | 9a36085b | Jan Kiszka | perror("sigtimedwait");
|
358 | 9a36085b | Jan Kiszka | exit(1);
|
359 | 9a36085b | Jan Kiszka | } |
360 | 9a36085b | Jan Kiszka | |
361 | 9a36085b | Jan Kiszka | switch (r) {
|
362 | 9a36085b | Jan Kiszka | case SIGBUS:
|
363 | 9a36085b | Jan Kiszka | if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr)) {
|
364 | 9a36085b | Jan Kiszka | sigbus_reraise(); |
365 | 9a36085b | Jan Kiszka | } |
366 | 9a36085b | Jan Kiszka | break;
|
367 | 9a36085b | Jan Kiszka | default:
|
368 | 9a36085b | Jan Kiszka | break;
|
369 | 9a36085b | Jan Kiszka | } |
370 | 9a36085b | Jan Kiszka | |
371 | 9a36085b | Jan Kiszka | r = sigpending(&chkset); |
372 | 9a36085b | Jan Kiszka | if (r == -1) { |
373 | 9a36085b | Jan Kiszka | perror("sigpending");
|
374 | 9a36085b | Jan Kiszka | exit(1);
|
375 | 9a36085b | Jan Kiszka | } |
376 | 9a36085b | Jan Kiszka | } while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS));
|
377 | de758970 | Jan Kiszka | |
378 | de758970 | Jan Kiszka | #ifndef CONFIG_IOTHREAD
|
379 | de758970 | Jan Kiszka | if (sigismember(&chkset, SIGIO) || sigismember(&chkset, SIGALRM)) {
|
380 | de758970 | Jan Kiszka | qemu_notify_event(); |
381 | de758970 | Jan Kiszka | } |
382 | de758970 | Jan Kiszka | #endif
|
383 | 9a36085b | Jan Kiszka | } |
384 | 9a36085b | Jan Kiszka | |
385 | 55f8d6ac | Jan Kiszka | #else /* _WIN32 */ |
386 | 55f8d6ac | Jan Kiszka | |
387 | 296af7c9 | Blue Swirl | HANDLE qemu_event_handle; |
388 | 296af7c9 | Blue Swirl | |
389 | 296af7c9 | Blue Swirl | static void dummy_event_handler(void *opaque) |
390 | 296af7c9 | Blue Swirl | { |
391 | 296af7c9 | Blue Swirl | } |
392 | 296af7c9 | Blue Swirl | |
393 | 296af7c9 | Blue Swirl | static int qemu_event_init(void) |
394 | 296af7c9 | Blue Swirl | { |
395 | 296af7c9 | Blue Swirl | qemu_event_handle = CreateEvent(NULL, FALSE, FALSE, NULL); |
396 | 296af7c9 | Blue Swirl | if (!qemu_event_handle) {
|
397 | 296af7c9 | Blue Swirl | fprintf(stderr, "Failed CreateEvent: %ld\n", GetLastError());
|
398 | 296af7c9 | Blue Swirl | return -1; |
399 | 296af7c9 | Blue Swirl | } |
400 | 296af7c9 | Blue Swirl | qemu_add_wait_object(qemu_event_handle, dummy_event_handler, NULL);
|
401 | 296af7c9 | Blue Swirl | return 0; |
402 | 296af7c9 | Blue Swirl | } |
403 | 296af7c9 | Blue Swirl | |
404 | 296af7c9 | Blue Swirl | static void qemu_event_increment(void) |
405 | 296af7c9 | Blue Swirl | { |
406 | 296af7c9 | Blue Swirl | if (!SetEvent(qemu_event_handle)) {
|
407 | 296af7c9 | Blue Swirl | fprintf(stderr, "qemu_event_increment: SetEvent failed: %ld\n",
|
408 | 296af7c9 | Blue Swirl | GetLastError()); |
409 | 296af7c9 | Blue Swirl | exit (1);
|
410 | 296af7c9 | Blue Swirl | } |
411 | 296af7c9 | Blue Swirl | } |
412 | 9a36085b | Jan Kiszka | |
413 | 9a36085b | Jan Kiszka | static void qemu_kvm_eat_signals(CPUState *env) |
414 | 9a36085b | Jan Kiszka | { |
415 | 9a36085b | Jan Kiszka | } |
416 | 55f8d6ac | Jan Kiszka | #endif /* _WIN32 */ |
417 | 296af7c9 | Blue Swirl | |
418 | 296af7c9 | Blue Swirl | #ifndef CONFIG_IOTHREAD
|
419 | ff48eb5f | Jan Kiszka | static void qemu_kvm_init_cpu_signals(CPUState *env) |
420 | ff48eb5f | Jan Kiszka | { |
421 | ff48eb5f | Jan Kiszka | #ifndef _WIN32
|
422 | ff48eb5f | Jan Kiszka | int r;
|
423 | ff48eb5f | Jan Kiszka | sigset_t set; |
424 | ff48eb5f | Jan Kiszka | struct sigaction sigact;
|
425 | ff48eb5f | Jan Kiszka | |
426 | ff48eb5f | Jan Kiszka | memset(&sigact, 0, sizeof(sigact)); |
427 | ff48eb5f | Jan Kiszka | sigact.sa_handler = dummy_signal; |
428 | ff48eb5f | Jan Kiszka | sigaction(SIG_IPI, &sigact, NULL);
|
429 | ff48eb5f | Jan Kiszka | |
430 | ff48eb5f | Jan Kiszka | sigemptyset(&set); |
431 | ff48eb5f | Jan Kiszka | sigaddset(&set, SIG_IPI); |
432 | de758970 | Jan Kiszka | sigaddset(&set, SIGIO); |
433 | de758970 | Jan Kiszka | sigaddset(&set, SIGALRM); |
434 | ff48eb5f | Jan Kiszka | pthread_sigmask(SIG_BLOCK, &set, NULL);
|
435 | ff48eb5f | Jan Kiszka | |
436 | ff48eb5f | Jan Kiszka | pthread_sigmask(SIG_BLOCK, NULL, &set);
|
437 | ff48eb5f | Jan Kiszka | sigdelset(&set, SIG_IPI); |
438 | ff48eb5f | Jan Kiszka | sigdelset(&set, SIGBUS); |
439 | de758970 | Jan Kiszka | sigdelset(&set, SIGIO); |
440 | de758970 | Jan Kiszka | sigdelset(&set, SIGALRM); |
441 | ff48eb5f | Jan Kiszka | r = kvm_set_signal_mask(env, &set); |
442 | ff48eb5f | Jan Kiszka | if (r) {
|
443 | ff48eb5f | Jan Kiszka | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r));
|
444 | ff48eb5f | Jan Kiszka | exit(1);
|
445 | ff48eb5f | Jan Kiszka | } |
446 | ff48eb5f | Jan Kiszka | #endif
|
447 | ff48eb5f | Jan Kiszka | } |
448 | ff48eb5f | Jan Kiszka | |
449 | de758970 | Jan Kiszka | #ifndef _WIN32
|
450 | de758970 | Jan Kiszka | static sigset_t block_synchronous_signals(void) |
451 | de758970 | Jan Kiszka | { |
452 | de758970 | Jan Kiszka | sigset_t set; |
453 | de758970 | Jan Kiszka | |
454 | de758970 | Jan Kiszka | sigemptyset(&set); |
455 | 6d9cb73c | Jan Kiszka | sigaddset(&set, SIGBUS); |
456 | de758970 | Jan Kiszka | if (kvm_enabled()) {
|
457 | de758970 | Jan Kiszka | /*
|
458 | de758970 | Jan Kiszka | * We need to process timer signals synchronously to avoid a race
|
459 | de758970 | Jan Kiszka | * between exit_request check and KVM vcpu entry.
|
460 | de758970 | Jan Kiszka | */
|
461 | de758970 | Jan Kiszka | sigaddset(&set, SIGIO); |
462 | de758970 | Jan Kiszka | sigaddset(&set, SIGALRM); |
463 | de758970 | Jan Kiszka | } |
464 | de758970 | Jan Kiszka | |
465 | de758970 | Jan Kiszka | return set;
|
466 | de758970 | Jan Kiszka | } |
467 | de758970 | Jan Kiszka | #endif
|
468 | de758970 | Jan Kiszka | |
469 | 296af7c9 | Blue Swirl | int qemu_init_main_loop(void) |
470 | 296af7c9 | Blue Swirl | { |
471 | d0f294ce | Jan Kiszka | #ifndef _WIN32
|
472 | d0f294ce | Jan Kiszka | sigset_t blocked_signals; |
473 | d0f294ce | Jan Kiszka | int ret;
|
474 | d0f294ce | Jan Kiszka | |
475 | de758970 | Jan Kiszka | blocked_signals = block_synchronous_signals(); |
476 | d0f294ce | Jan Kiszka | |
477 | d0f294ce | Jan Kiszka | ret = qemu_signalfd_init(blocked_signals); |
478 | d0f294ce | Jan Kiszka | if (ret) {
|
479 | d0f294ce | Jan Kiszka | return ret;
|
480 | d0f294ce | Jan Kiszka | } |
481 | d0f294ce | Jan Kiszka | #endif
|
482 | 3c638d06 | Jan Kiszka | cpu_set_debug_excp_handler(cpu_debug_handler); |
483 | 3c638d06 | Jan Kiszka | |
484 | 6d9cb73c | Jan Kiszka | qemu_init_sigbus(); |
485 | 6d9cb73c | Jan Kiszka | |
486 | 296af7c9 | Blue Swirl | return qemu_event_init();
|
487 | 296af7c9 | Blue Swirl | } |
488 | 296af7c9 | Blue Swirl | |
489 | 7277e027 | Blue Swirl | void qemu_main_loop_start(void) |
490 | 7277e027 | Blue Swirl | { |
491 | 7277e027 | Blue Swirl | } |
492 | 7277e027 | Blue Swirl | |
493 | 296af7c9 | Blue Swirl | void qemu_init_vcpu(void *_env) |
494 | 296af7c9 | Blue Swirl | { |
495 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
496 | 84b4915d | Jan Kiszka | int r;
|
497 | 296af7c9 | Blue Swirl | |
498 | 296af7c9 | Blue Swirl | env->nr_cores = smp_cores; |
499 | 296af7c9 | Blue Swirl | env->nr_threads = smp_threads; |
500 | 84b4915d | Jan Kiszka | |
501 | 84b4915d | Jan Kiszka | if (kvm_enabled()) {
|
502 | 84b4915d | Jan Kiszka | r = kvm_init_vcpu(env); |
503 | 84b4915d | Jan Kiszka | if (r < 0) { |
504 | 84b4915d | Jan Kiszka | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r));
|
505 | 84b4915d | Jan Kiszka | exit(1);
|
506 | 84b4915d | Jan Kiszka | } |
507 | ff48eb5f | Jan Kiszka | qemu_kvm_init_cpu_signals(env); |
508 | 84b4915d | Jan Kiszka | } |
509 | 296af7c9 | Blue Swirl | } |
510 | 296af7c9 | Blue Swirl | |
511 | 296af7c9 | Blue Swirl | int qemu_cpu_self(void *env) |
512 | 296af7c9 | Blue Swirl | { |
513 | 296af7c9 | Blue Swirl | return 1; |
514 | 296af7c9 | Blue Swirl | } |
515 | 296af7c9 | Blue Swirl | |
516 | e82bcec2 | Marcelo Tosatti | void run_on_cpu(CPUState *env, void (*func)(void *data), void *data) |
517 | e82bcec2 | Marcelo Tosatti | { |
518 | e82bcec2 | Marcelo Tosatti | func(data); |
519 | e82bcec2 | Marcelo Tosatti | } |
520 | e82bcec2 | Marcelo Tosatti | |
521 | 296af7c9 | Blue Swirl | void resume_all_vcpus(void) |
522 | 296af7c9 | Blue Swirl | { |
523 | 296af7c9 | Blue Swirl | } |
524 | 296af7c9 | Blue Swirl | |
525 | 296af7c9 | Blue Swirl | void pause_all_vcpus(void) |
526 | 296af7c9 | Blue Swirl | { |
527 | 296af7c9 | Blue Swirl | } |
528 | 296af7c9 | Blue Swirl | |
529 | 296af7c9 | Blue Swirl | void qemu_cpu_kick(void *env) |
530 | 296af7c9 | Blue Swirl | { |
531 | 296af7c9 | Blue Swirl | } |
532 | 296af7c9 | Blue Swirl | |
533 | 46d62fac | Jan Kiszka | void qemu_cpu_kick_self(void) |
534 | 46d62fac | Jan Kiszka | { |
535 | 46d62fac | Jan Kiszka | #ifndef _WIN32
|
536 | 46d62fac | Jan Kiszka | assert(cpu_single_env); |
537 | 46d62fac | Jan Kiszka | |
538 | 46d62fac | Jan Kiszka | raise(SIG_IPI); |
539 | 46d62fac | Jan Kiszka | #else
|
540 | 46d62fac | Jan Kiszka | abort(); |
541 | 46d62fac | Jan Kiszka | #endif
|
542 | 46d62fac | Jan Kiszka | } |
543 | 46d62fac | Jan Kiszka | |
544 | 296af7c9 | Blue Swirl | void qemu_notify_event(void) |
545 | 296af7c9 | Blue Swirl | { |
546 | 296af7c9 | Blue Swirl | CPUState *env = cpu_single_env; |
547 | 296af7c9 | Blue Swirl | |
548 | 296af7c9 | Blue Swirl | qemu_event_increment (); |
549 | 296af7c9 | Blue Swirl | if (env) {
|
550 | 296af7c9 | Blue Swirl | cpu_exit(env); |
551 | 296af7c9 | Blue Swirl | } |
552 | 296af7c9 | Blue Swirl | if (next_cpu && env != next_cpu) {
|
553 | 296af7c9 | Blue Swirl | cpu_exit(next_cpu); |
554 | 296af7c9 | Blue Swirl | } |
555 | 38145df2 | Jan Kiszka | exit_request = 1;
|
556 | 296af7c9 | Blue Swirl | } |
557 | 296af7c9 | Blue Swirl | |
558 | 296af7c9 | Blue Swirl | void qemu_mutex_lock_iothread(void) {} |
559 | 296af7c9 | Blue Swirl | void qemu_mutex_unlock_iothread(void) {} |
560 | 296af7c9 | Blue Swirl | |
561 | b4a3d965 | Jan Kiszka | void cpu_stop_current(void) |
562 | b4a3d965 | Jan Kiszka | { |
563 | b4a3d965 | Jan Kiszka | } |
564 | b4a3d965 | Jan Kiszka | |
565 | 296af7c9 | Blue Swirl | void vm_stop(int reason) |
566 | 296af7c9 | Blue Swirl | { |
567 | 296af7c9 | Blue Swirl | do_vm_stop(reason); |
568 | 296af7c9 | Blue Swirl | } |
569 | 296af7c9 | Blue Swirl | |
570 | 296af7c9 | Blue Swirl | #else /* CONFIG_IOTHREAD */ |
571 | 296af7c9 | Blue Swirl | |
572 | 296af7c9 | Blue Swirl | #include "qemu-thread.h" |
573 | 296af7c9 | Blue Swirl | |
574 | 296af7c9 | Blue Swirl | QemuMutex qemu_global_mutex; |
575 | 296af7c9 | Blue Swirl | static QemuMutex qemu_fair_mutex;
|
576 | 296af7c9 | Blue Swirl | |
577 | 296af7c9 | Blue Swirl | static QemuThread io_thread;
|
578 | 296af7c9 | Blue Swirl | |
579 | 296af7c9 | Blue Swirl | static QemuThread *tcg_cpu_thread;
|
580 | 296af7c9 | Blue Swirl | static QemuCond *tcg_halt_cond;
|
581 | 296af7c9 | Blue Swirl | |
582 | 296af7c9 | Blue Swirl | static int qemu_system_ready; |
583 | 296af7c9 | Blue Swirl | /* cpu creation */
|
584 | 296af7c9 | Blue Swirl | static QemuCond qemu_cpu_cond;
|
585 | 296af7c9 | Blue Swirl | /* system init */
|
586 | 296af7c9 | Blue Swirl | static QemuCond qemu_system_cond;
|
587 | 296af7c9 | Blue Swirl | static QemuCond qemu_pause_cond;
|
588 | e82bcec2 | Marcelo Tosatti | static QemuCond qemu_work_cond;
|
589 | 296af7c9 | Blue Swirl | |
590 | 55f8d6ac | Jan Kiszka | static void cpu_signal(int sig) |
591 | 55f8d6ac | Jan Kiszka | { |
592 | 55f8d6ac | Jan Kiszka | if (cpu_single_env) {
|
593 | 55f8d6ac | Jan Kiszka | cpu_exit(cpu_single_env); |
594 | 55f8d6ac | Jan Kiszka | } |
595 | 55f8d6ac | Jan Kiszka | exit_request = 1;
|
596 | 55f8d6ac | Jan Kiszka | } |
597 | 55f8d6ac | Jan Kiszka | |
598 | 55f8d6ac | Jan Kiszka | static void qemu_kvm_init_cpu_signals(CPUState *env) |
599 | 55f8d6ac | Jan Kiszka | { |
600 | 55f8d6ac | Jan Kiszka | int r;
|
601 | 55f8d6ac | Jan Kiszka | sigset_t set; |
602 | 55f8d6ac | Jan Kiszka | struct sigaction sigact;
|
603 | 55f8d6ac | Jan Kiszka | |
604 | 55f8d6ac | Jan Kiszka | memset(&sigact, 0, sizeof(sigact)); |
605 | 55f8d6ac | Jan Kiszka | sigact.sa_handler = dummy_signal; |
606 | 55f8d6ac | Jan Kiszka | sigaction(SIG_IPI, &sigact, NULL);
|
607 | 55f8d6ac | Jan Kiszka | |
608 | 55f8d6ac | Jan Kiszka | pthread_sigmask(SIG_BLOCK, NULL, &set);
|
609 | 55f8d6ac | Jan Kiszka | sigdelset(&set, SIG_IPI); |
610 | 55f8d6ac | Jan Kiszka | sigdelset(&set, SIGBUS); |
611 | 55f8d6ac | Jan Kiszka | r = kvm_set_signal_mask(env, &set); |
612 | 55f8d6ac | Jan Kiszka | if (r) {
|
613 | 55f8d6ac | Jan Kiszka | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r));
|
614 | 55f8d6ac | Jan Kiszka | exit(1);
|
615 | 55f8d6ac | Jan Kiszka | } |
616 | 55f8d6ac | Jan Kiszka | } |
617 | 55f8d6ac | Jan Kiszka | |
618 | 55f8d6ac | Jan Kiszka | static void qemu_tcg_init_cpu_signals(void) |
619 | 55f8d6ac | Jan Kiszka | { |
620 | 55f8d6ac | Jan Kiszka | sigset_t set; |
621 | 55f8d6ac | Jan Kiszka | struct sigaction sigact;
|
622 | 55f8d6ac | Jan Kiszka | |
623 | 55f8d6ac | Jan Kiszka | memset(&sigact, 0, sizeof(sigact)); |
624 | 55f8d6ac | Jan Kiszka | sigact.sa_handler = cpu_signal; |
625 | 55f8d6ac | Jan Kiszka | sigaction(SIG_IPI, &sigact, NULL);
|
626 | 55f8d6ac | Jan Kiszka | |
627 | 55f8d6ac | Jan Kiszka | sigemptyset(&set); |
628 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIG_IPI); |
629 | 55f8d6ac | Jan Kiszka | pthread_sigmask(SIG_UNBLOCK, &set, NULL);
|
630 | 55f8d6ac | Jan Kiszka | } |
631 | 55f8d6ac | Jan Kiszka | |
632 | 55f8d6ac | Jan Kiszka | static sigset_t block_io_signals(void) |
633 | 55f8d6ac | Jan Kiszka | { |
634 | 55f8d6ac | Jan Kiszka | sigset_t set; |
635 | 55f8d6ac | Jan Kiszka | |
636 | 55f8d6ac | Jan Kiszka | /* SIGUSR2 used by posix-aio-compat.c */
|
637 | 55f8d6ac | Jan Kiszka | sigemptyset(&set); |
638 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIGUSR2); |
639 | 55f8d6ac | Jan Kiszka | pthread_sigmask(SIG_UNBLOCK, &set, NULL);
|
640 | 55f8d6ac | Jan Kiszka | |
641 | 55f8d6ac | Jan Kiszka | sigemptyset(&set); |
642 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIGIO); |
643 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIGALRM); |
644 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIG_IPI); |
645 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIGBUS); |
646 | 55f8d6ac | Jan Kiszka | pthread_sigmask(SIG_BLOCK, &set, NULL);
|
647 | 55f8d6ac | Jan Kiszka | |
648 | 55f8d6ac | Jan Kiszka | return set;
|
649 | 55f8d6ac | Jan Kiszka | } |
650 | 55f8d6ac | Jan Kiszka | |
651 | 296af7c9 | Blue Swirl | int qemu_init_main_loop(void) |
652 | 296af7c9 | Blue Swirl | { |
653 | 296af7c9 | Blue Swirl | int ret;
|
654 | a8486bc9 | Marcelo Tosatti | sigset_t blocked_signals; |
655 | 296af7c9 | Blue Swirl | |
656 | 3c638d06 | Jan Kiszka | cpu_set_debug_excp_handler(cpu_debug_handler); |
657 | 3c638d06 | Jan Kiszka | |
658 | 6d9cb73c | Jan Kiszka | qemu_init_sigbus(); |
659 | 6d9cb73c | Jan Kiszka | |
660 | a8486bc9 | Marcelo Tosatti | blocked_signals = block_io_signals(); |
661 | a8486bc9 | Marcelo Tosatti | |
662 | a8486bc9 | Marcelo Tosatti | ret = qemu_signalfd_init(blocked_signals); |
663 | 0ab07c62 | Jan Kiszka | if (ret) {
|
664 | a8486bc9 | Marcelo Tosatti | return ret;
|
665 | 0ab07c62 | Jan Kiszka | } |
666 | a8486bc9 | Marcelo Tosatti | |
667 | a8486bc9 | Marcelo Tosatti | /* Note eventfd must be drained before signalfd handlers run */
|
668 | 296af7c9 | Blue Swirl | ret = qemu_event_init(); |
669 | 0ab07c62 | Jan Kiszka | if (ret) {
|
670 | 296af7c9 | Blue Swirl | return ret;
|
671 | 0ab07c62 | Jan Kiszka | } |
672 | 296af7c9 | Blue Swirl | |
673 | 296af7c9 | Blue Swirl | qemu_cond_init(&qemu_pause_cond); |
674 | f8ca7b43 | Jan Kiszka | qemu_cond_init(&qemu_system_cond); |
675 | 296af7c9 | Blue Swirl | qemu_mutex_init(&qemu_fair_mutex); |
676 | 296af7c9 | Blue Swirl | qemu_mutex_init(&qemu_global_mutex); |
677 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
678 | 296af7c9 | Blue Swirl | |
679 | 296af7c9 | Blue Swirl | qemu_thread_self(&io_thread); |
680 | 296af7c9 | Blue Swirl | |
681 | 296af7c9 | Blue Swirl | return 0; |
682 | 296af7c9 | Blue Swirl | } |
683 | 296af7c9 | Blue Swirl | |
684 | 7277e027 | Blue Swirl | void qemu_main_loop_start(void) |
685 | 7277e027 | Blue Swirl | { |
686 | 7277e027 | Blue Swirl | qemu_system_ready = 1;
|
687 | 7277e027 | Blue Swirl | qemu_cond_broadcast(&qemu_system_cond); |
688 | 7277e027 | Blue Swirl | } |
689 | 7277e027 | Blue Swirl | |
690 | e82bcec2 | Marcelo Tosatti | void run_on_cpu(CPUState *env, void (*func)(void *data), void *data) |
691 | e82bcec2 | Marcelo Tosatti | { |
692 | e82bcec2 | Marcelo Tosatti | struct qemu_work_item wi;
|
693 | e82bcec2 | Marcelo Tosatti | |
694 | e82bcec2 | Marcelo Tosatti | if (qemu_cpu_self(env)) {
|
695 | e82bcec2 | Marcelo Tosatti | func(data); |
696 | e82bcec2 | Marcelo Tosatti | return;
|
697 | e82bcec2 | Marcelo Tosatti | } |
698 | e82bcec2 | Marcelo Tosatti | |
699 | e82bcec2 | Marcelo Tosatti | wi.func = func; |
700 | e82bcec2 | Marcelo Tosatti | wi.data = data; |
701 | 0ab07c62 | Jan Kiszka | if (!env->queued_work_first) {
|
702 | e82bcec2 | Marcelo Tosatti | env->queued_work_first = &wi; |
703 | 0ab07c62 | Jan Kiszka | } else {
|
704 | e82bcec2 | Marcelo Tosatti | env->queued_work_last->next = &wi; |
705 | 0ab07c62 | Jan Kiszka | } |
706 | e82bcec2 | Marcelo Tosatti | env->queued_work_last = &wi; |
707 | e82bcec2 | Marcelo Tosatti | wi.next = NULL;
|
708 | e82bcec2 | Marcelo Tosatti | wi.done = false;
|
709 | e82bcec2 | Marcelo Tosatti | |
710 | e82bcec2 | Marcelo Tosatti | qemu_cpu_kick(env); |
711 | e82bcec2 | Marcelo Tosatti | while (!wi.done) {
|
712 | e82bcec2 | Marcelo Tosatti | CPUState *self_env = cpu_single_env; |
713 | e82bcec2 | Marcelo Tosatti | |
714 | e82bcec2 | Marcelo Tosatti | qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex); |
715 | e82bcec2 | Marcelo Tosatti | cpu_single_env = self_env; |
716 | e82bcec2 | Marcelo Tosatti | } |
717 | e82bcec2 | Marcelo Tosatti | } |
718 | e82bcec2 | Marcelo Tosatti | |
719 | e82bcec2 | Marcelo Tosatti | static void flush_queued_work(CPUState *env) |
720 | e82bcec2 | Marcelo Tosatti | { |
721 | e82bcec2 | Marcelo Tosatti | struct qemu_work_item *wi;
|
722 | e82bcec2 | Marcelo Tosatti | |
723 | 0ab07c62 | Jan Kiszka | if (!env->queued_work_first) {
|
724 | e82bcec2 | Marcelo Tosatti | return;
|
725 | 0ab07c62 | Jan Kiszka | } |
726 | e82bcec2 | Marcelo Tosatti | |
727 | e82bcec2 | Marcelo Tosatti | while ((wi = env->queued_work_first)) {
|
728 | e82bcec2 | Marcelo Tosatti | env->queued_work_first = wi->next; |
729 | e82bcec2 | Marcelo Tosatti | wi->func(wi->data); |
730 | e82bcec2 | Marcelo Tosatti | wi->done = true;
|
731 | e82bcec2 | Marcelo Tosatti | } |
732 | e82bcec2 | Marcelo Tosatti | env->queued_work_last = NULL;
|
733 | e82bcec2 | Marcelo Tosatti | qemu_cond_broadcast(&qemu_work_cond); |
734 | e82bcec2 | Marcelo Tosatti | } |
735 | e82bcec2 | Marcelo Tosatti | |
736 | 296af7c9 | Blue Swirl | static void qemu_wait_io_event_common(CPUState *env) |
737 | 296af7c9 | Blue Swirl | { |
738 | 296af7c9 | Blue Swirl | if (env->stop) {
|
739 | 296af7c9 | Blue Swirl | env->stop = 0;
|
740 | 296af7c9 | Blue Swirl | env->stopped = 1;
|
741 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_pause_cond); |
742 | 296af7c9 | Blue Swirl | } |
743 | e82bcec2 | Marcelo Tosatti | flush_queued_work(env); |
744 | aa2c364b | Jan Kiszka | env->thread_kicked = false;
|
745 | 296af7c9 | Blue Swirl | } |
746 | 296af7c9 | Blue Swirl | |
747 | 6cabe1f3 | Jan Kiszka | static void qemu_tcg_wait_io_event(void) |
748 | 296af7c9 | Blue Swirl | { |
749 | 6cabe1f3 | Jan Kiszka | CPUState *env; |
750 | 6cabe1f3 | Jan Kiszka | |
751 | 16400322 | Jan Kiszka | while (all_cpu_threads_idle()) {
|
752 | 6cabe1f3 | Jan Kiszka | qemu_cond_timedwait(tcg_halt_cond, &qemu_global_mutex, 1000);
|
753 | 16400322 | Jan Kiszka | } |
754 | 296af7c9 | Blue Swirl | |
755 | 296af7c9 | Blue Swirl | qemu_mutex_unlock(&qemu_global_mutex); |
756 | 296af7c9 | Blue Swirl | |
757 | 296af7c9 | Blue Swirl | /*
|
758 | 296af7c9 | Blue Swirl | * Users of qemu_global_mutex can be starved, having no chance
|
759 | 296af7c9 | Blue Swirl | * to acquire it since this path will get to it first.
|
760 | 296af7c9 | Blue Swirl | * So use another lock to provide fairness.
|
761 | 296af7c9 | Blue Swirl | */
|
762 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_fair_mutex); |
763 | 296af7c9 | Blue Swirl | qemu_mutex_unlock(&qemu_fair_mutex); |
764 | 296af7c9 | Blue Swirl | |
765 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
766 | 6cabe1f3 | Jan Kiszka | |
767 | 6cabe1f3 | Jan Kiszka | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
768 | 6cabe1f3 | Jan Kiszka | qemu_wait_io_event_common(env); |
769 | 6cabe1f3 | Jan Kiszka | } |
770 | 296af7c9 | Blue Swirl | } |
771 | 296af7c9 | Blue Swirl | |
772 | 296af7c9 | Blue Swirl | static void qemu_kvm_wait_io_event(CPUState *env) |
773 | 296af7c9 | Blue Swirl | { |
774 | 16400322 | Jan Kiszka | while (cpu_thread_is_idle(env)) {
|
775 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(env->halt_cond, &qemu_global_mutex, 1000);
|
776 | 16400322 | Jan Kiszka | } |
777 | 296af7c9 | Blue Swirl | |
778 | 5db5bdac | Jan Kiszka | qemu_kvm_eat_signals(env); |
779 | 296af7c9 | Blue Swirl | qemu_wait_io_event_common(env); |
780 | 296af7c9 | Blue Swirl | } |
781 | 296af7c9 | Blue Swirl | |
782 | 296af7c9 | Blue Swirl | static int qemu_cpu_exec(CPUState *env); |
783 | 296af7c9 | Blue Swirl | |
784 | 7e97cd88 | Jan Kiszka | static void *qemu_kvm_cpu_thread_fn(void *arg) |
785 | 296af7c9 | Blue Swirl | { |
786 | 296af7c9 | Blue Swirl | CPUState *env = arg; |
787 | 84b4915d | Jan Kiszka | int r;
|
788 | 296af7c9 | Blue Swirl | |
789 | 6164e6d6 | Marcelo Tosatti | qemu_mutex_lock(&qemu_global_mutex); |
790 | 296af7c9 | Blue Swirl | qemu_thread_self(env->thread); |
791 | d31ae052 | Jan Kiszka | |
792 | 84b4915d | Jan Kiszka | r = kvm_init_vcpu(env); |
793 | 84b4915d | Jan Kiszka | if (r < 0) { |
794 | 84b4915d | Jan Kiszka | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r));
|
795 | 84b4915d | Jan Kiszka | exit(1);
|
796 | 84b4915d | Jan Kiszka | } |
797 | 296af7c9 | Blue Swirl | |
798 | 55f8d6ac | Jan Kiszka | qemu_kvm_init_cpu_signals(env); |
799 | 296af7c9 | Blue Swirl | |
800 | 296af7c9 | Blue Swirl | /* signal CPU creation */
|
801 | 296af7c9 | Blue Swirl | env->created = 1;
|
802 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_cpu_cond); |
803 | 296af7c9 | Blue Swirl | |
804 | 296af7c9 | Blue Swirl | /* and wait for machine initialization */
|
805 | 0ab07c62 | Jan Kiszka | while (!qemu_system_ready) {
|
806 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_system_cond, &qemu_global_mutex, 100);
|
807 | 0ab07c62 | Jan Kiszka | } |
808 | 296af7c9 | Blue Swirl | |
809 | 296af7c9 | Blue Swirl | while (1) { |
810 | 0ab07c62 | Jan Kiszka | if (cpu_can_run(env)) {
|
811 | 296af7c9 | Blue Swirl | qemu_cpu_exec(env); |
812 | 0ab07c62 | Jan Kiszka | } |
813 | 296af7c9 | Blue Swirl | qemu_kvm_wait_io_event(env); |
814 | 296af7c9 | Blue Swirl | } |
815 | 296af7c9 | Blue Swirl | |
816 | 296af7c9 | Blue Swirl | return NULL; |
817 | 296af7c9 | Blue Swirl | } |
818 | 296af7c9 | Blue Swirl | |
819 | 7e97cd88 | Jan Kiszka | static void *qemu_tcg_cpu_thread_fn(void *arg) |
820 | 296af7c9 | Blue Swirl | { |
821 | 296af7c9 | Blue Swirl | CPUState *env = arg; |
822 | 296af7c9 | Blue Swirl | |
823 | 55f8d6ac | Jan Kiszka | qemu_tcg_init_cpu_signals(); |
824 | 296af7c9 | Blue Swirl | qemu_thread_self(env->thread); |
825 | 296af7c9 | Blue Swirl | |
826 | 296af7c9 | Blue Swirl | /* signal CPU creation */
|
827 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
828 | 0ab07c62 | Jan Kiszka | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
829 | 296af7c9 | Blue Swirl | env->created = 1;
|
830 | 0ab07c62 | Jan Kiszka | } |
831 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_cpu_cond); |
832 | 296af7c9 | Blue Swirl | |
833 | 296af7c9 | Blue Swirl | /* and wait for machine initialization */
|
834 | 0ab07c62 | Jan Kiszka | while (!qemu_system_ready) {
|
835 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_system_cond, &qemu_global_mutex, 100);
|
836 | 0ab07c62 | Jan Kiszka | } |
837 | 296af7c9 | Blue Swirl | |
838 | 296af7c9 | Blue Swirl | while (1) { |
839 | 472fb0c4 | Jan Kiszka | cpu_exec_all(); |
840 | 6cabe1f3 | Jan Kiszka | qemu_tcg_wait_io_event(); |
841 | 296af7c9 | Blue Swirl | } |
842 | 296af7c9 | Blue Swirl | |
843 | 296af7c9 | Blue Swirl | return NULL; |
844 | 296af7c9 | Blue Swirl | } |
845 | 296af7c9 | Blue Swirl | |
846 | 296af7c9 | Blue Swirl | void qemu_cpu_kick(void *_env) |
847 | 296af7c9 | Blue Swirl | { |
848 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
849 | 0ab07c62 | Jan Kiszka | |
850 | 296af7c9 | Blue Swirl | qemu_cond_broadcast(env->halt_cond); |
851 | aa2c364b | Jan Kiszka | if (!env->thread_kicked) {
|
852 | aa2c364b | Jan Kiszka | qemu_thread_signal(env->thread, SIG_IPI); |
853 | aa2c364b | Jan Kiszka | env->thread_kicked = true;
|
854 | aa2c364b | Jan Kiszka | } |
855 | 296af7c9 | Blue Swirl | } |
856 | 296af7c9 | Blue Swirl | |
857 | 46d62fac | Jan Kiszka | void qemu_cpu_kick_self(void) |
858 | 46d62fac | Jan Kiszka | { |
859 | 46d62fac | Jan Kiszka | assert(cpu_single_env); |
860 | 46d62fac | Jan Kiszka | |
861 | 46d62fac | Jan Kiszka | if (!cpu_single_env->thread_kicked) {
|
862 | 46d62fac | Jan Kiszka | qemu_thread_signal(cpu_single_env->thread, SIG_IPI); |
863 | 46d62fac | Jan Kiszka | cpu_single_env->thread_kicked = true;
|
864 | 46d62fac | Jan Kiszka | } |
865 | 46d62fac | Jan Kiszka | } |
866 | 46d62fac | Jan Kiszka | |
867 | 296af7c9 | Blue Swirl | int qemu_cpu_self(void *_env) |
868 | 296af7c9 | Blue Swirl | { |
869 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
870 | 296af7c9 | Blue Swirl | QemuThread this; |
871 | 296af7c9 | Blue Swirl | |
872 | 296af7c9 | Blue Swirl | qemu_thread_self(&this); |
873 | 296af7c9 | Blue Swirl | |
874 | 296af7c9 | Blue Swirl | return qemu_thread_equal(&this, env->thread);
|
875 | 296af7c9 | Blue Swirl | } |
876 | 296af7c9 | Blue Swirl | |
877 | 296af7c9 | Blue Swirl | void qemu_mutex_lock_iothread(void) |
878 | 296af7c9 | Blue Swirl | { |
879 | 296af7c9 | Blue Swirl | if (kvm_enabled()) {
|
880 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
881 | 1a28cac3 | Marcelo Tosatti | } else {
|
882 | 1a28cac3 | Marcelo Tosatti | qemu_mutex_lock(&qemu_fair_mutex); |
883 | 1a28cac3 | Marcelo Tosatti | if (qemu_mutex_trylock(&qemu_global_mutex)) {
|
884 | 1a28cac3 | Marcelo Tosatti | qemu_thread_signal(tcg_cpu_thread, SIG_IPI); |
885 | 1a28cac3 | Marcelo Tosatti | qemu_mutex_lock(&qemu_global_mutex); |
886 | 1a28cac3 | Marcelo Tosatti | } |
887 | 1a28cac3 | Marcelo Tosatti | qemu_mutex_unlock(&qemu_fair_mutex); |
888 | 1a28cac3 | Marcelo Tosatti | } |
889 | 296af7c9 | Blue Swirl | } |
890 | 296af7c9 | Blue Swirl | |
891 | 296af7c9 | Blue Swirl | void qemu_mutex_unlock_iothread(void) |
892 | 296af7c9 | Blue Swirl | { |
893 | 296af7c9 | Blue Swirl | qemu_mutex_unlock(&qemu_global_mutex); |
894 | 296af7c9 | Blue Swirl | } |
895 | 296af7c9 | Blue Swirl | |
896 | 296af7c9 | Blue Swirl | static int all_vcpus_paused(void) |
897 | 296af7c9 | Blue Swirl | { |
898 | 296af7c9 | Blue Swirl | CPUState *penv = first_cpu; |
899 | 296af7c9 | Blue Swirl | |
900 | 296af7c9 | Blue Swirl | while (penv) {
|
901 | 0ab07c62 | Jan Kiszka | if (!penv->stopped) {
|
902 | 296af7c9 | Blue Swirl | return 0; |
903 | 0ab07c62 | Jan Kiszka | } |
904 | 296af7c9 | Blue Swirl | penv = (CPUState *)penv->next_cpu; |
905 | 296af7c9 | Blue Swirl | } |
906 | 296af7c9 | Blue Swirl | |
907 | 296af7c9 | Blue Swirl | return 1; |
908 | 296af7c9 | Blue Swirl | } |
909 | 296af7c9 | Blue Swirl | |
910 | 296af7c9 | Blue Swirl | void pause_all_vcpus(void) |
911 | 296af7c9 | Blue Swirl | { |
912 | 296af7c9 | Blue Swirl | CPUState *penv = first_cpu; |
913 | 296af7c9 | Blue Swirl | |
914 | 296af7c9 | Blue Swirl | while (penv) {
|
915 | 296af7c9 | Blue Swirl | penv->stop = 1;
|
916 | 296af7c9 | Blue Swirl | qemu_cpu_kick(penv); |
917 | 296af7c9 | Blue Swirl | penv = (CPUState *)penv->next_cpu; |
918 | 296af7c9 | Blue Swirl | } |
919 | 296af7c9 | Blue Swirl | |
920 | 296af7c9 | Blue Swirl | while (!all_vcpus_paused()) {
|
921 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_pause_cond, &qemu_global_mutex, 100);
|
922 | 296af7c9 | Blue Swirl | penv = first_cpu; |
923 | 296af7c9 | Blue Swirl | while (penv) {
|
924 | 1fbb22e5 | Marcelo Tosatti | 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 | |
930 | 296af7c9 | Blue Swirl | void resume_all_vcpus(void) |
931 | 296af7c9 | Blue Swirl | { |
932 | 296af7c9 | Blue Swirl | CPUState *penv = first_cpu; |
933 | 296af7c9 | Blue Swirl | |
934 | 296af7c9 | Blue Swirl | while (penv) {
|
935 | 296af7c9 | Blue Swirl | penv->stop = 0;
|
936 | 296af7c9 | Blue Swirl | penv->stopped = 0;
|
937 | 296af7c9 | Blue Swirl | qemu_cpu_kick(penv); |
938 | 296af7c9 | Blue Swirl | penv = (CPUState *)penv->next_cpu; |
939 | 296af7c9 | Blue Swirl | } |
940 | 296af7c9 | Blue Swirl | } |
941 | 296af7c9 | Blue Swirl | |
942 | 7e97cd88 | Jan Kiszka | static void qemu_tcg_init_vcpu(void *_env) |
943 | 296af7c9 | Blue Swirl | { |
944 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
945 | 0ab07c62 | Jan Kiszka | |
946 | 296af7c9 | Blue Swirl | /* share a single thread for all cpus with TCG */
|
947 | 296af7c9 | Blue Swirl | if (!tcg_cpu_thread) {
|
948 | 296af7c9 | Blue Swirl | env->thread = qemu_mallocz(sizeof(QemuThread));
|
949 | 296af7c9 | Blue Swirl | env->halt_cond = qemu_mallocz(sizeof(QemuCond));
|
950 | 296af7c9 | Blue Swirl | qemu_cond_init(env->halt_cond); |
951 | 7e97cd88 | Jan Kiszka | qemu_thread_create(env->thread, qemu_tcg_cpu_thread_fn, env); |
952 | 0ab07c62 | Jan Kiszka | while (env->created == 0) { |
953 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
|
954 | 0ab07c62 | Jan Kiszka | } |
955 | 296af7c9 | Blue Swirl | tcg_cpu_thread = env->thread; |
956 | 296af7c9 | Blue Swirl | tcg_halt_cond = env->halt_cond; |
957 | 296af7c9 | Blue Swirl | } else {
|
958 | 296af7c9 | Blue Swirl | env->thread = tcg_cpu_thread; |
959 | 296af7c9 | Blue Swirl | env->halt_cond = tcg_halt_cond; |
960 | 296af7c9 | Blue Swirl | } |
961 | 296af7c9 | Blue Swirl | } |
962 | 296af7c9 | Blue Swirl | |
963 | 7e97cd88 | Jan Kiszka | static void qemu_kvm_start_vcpu(CPUState *env) |
964 | 296af7c9 | Blue Swirl | { |
965 | 296af7c9 | Blue Swirl | env->thread = qemu_mallocz(sizeof(QemuThread));
|
966 | 296af7c9 | Blue Swirl | env->halt_cond = qemu_mallocz(sizeof(QemuCond));
|
967 | 296af7c9 | Blue Swirl | qemu_cond_init(env->halt_cond); |
968 | 7e97cd88 | Jan Kiszka | qemu_thread_create(env->thread, qemu_kvm_cpu_thread_fn, env); |
969 | 0ab07c62 | Jan Kiszka | while (env->created == 0) { |
970 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
|
971 | 0ab07c62 | Jan Kiszka | } |
972 | 296af7c9 | Blue Swirl | } |
973 | 296af7c9 | Blue Swirl | |
974 | 296af7c9 | Blue Swirl | void qemu_init_vcpu(void *_env) |
975 | 296af7c9 | Blue Swirl | { |
976 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
977 | 296af7c9 | Blue Swirl | |
978 | 296af7c9 | Blue Swirl | env->nr_cores = smp_cores; |
979 | 296af7c9 | Blue Swirl | env->nr_threads = smp_threads; |
980 | 0ab07c62 | Jan Kiszka | if (kvm_enabled()) {
|
981 | 7e97cd88 | Jan Kiszka | qemu_kvm_start_vcpu(env); |
982 | 0ab07c62 | Jan Kiszka | } else {
|
983 | 7e97cd88 | Jan Kiszka | qemu_tcg_init_vcpu(env); |
984 | 0ab07c62 | Jan Kiszka | } |
985 | 296af7c9 | Blue Swirl | } |
986 | 296af7c9 | Blue Swirl | |
987 | 296af7c9 | Blue Swirl | void qemu_notify_event(void) |
988 | 296af7c9 | Blue Swirl | { |
989 | 296af7c9 | Blue Swirl | qemu_event_increment(); |
990 | 296af7c9 | Blue Swirl | } |
991 | 296af7c9 | Blue Swirl | |
992 | b4a3d965 | Jan Kiszka | void cpu_stop_current(void) |
993 | b4a3d965 | Jan Kiszka | { |
994 | b4a3d965 | Jan Kiszka | if (cpu_single_env) {
|
995 | b4a3d965 | Jan Kiszka | cpu_single_env->stopped = 1;
|
996 | b4a3d965 | Jan Kiszka | cpu_exit(cpu_single_env); |
997 | b4a3d965 | Jan Kiszka | } |
998 | b4a3d965 | Jan Kiszka | } |
999 | b4a3d965 | Jan Kiszka | |
1000 | 296af7c9 | Blue Swirl | void vm_stop(int reason) |
1001 | 296af7c9 | Blue Swirl | { |
1002 | 296af7c9 | Blue Swirl | QemuThread me; |
1003 | 296af7c9 | Blue Swirl | qemu_thread_self(&me); |
1004 | 296af7c9 | Blue Swirl | |
1005 | 296af7c9 | Blue Swirl | if (!qemu_thread_equal(&me, &io_thread)) {
|
1006 | 296af7c9 | Blue Swirl | qemu_system_vmstop_request(reason); |
1007 | 296af7c9 | Blue Swirl | /*
|
1008 | 296af7c9 | Blue Swirl | * FIXME: should not return to device code in case
|
1009 | 296af7c9 | Blue Swirl | * vm_stop() has been requested.
|
1010 | 296af7c9 | Blue Swirl | */
|
1011 | b4a3d965 | Jan Kiszka | cpu_stop_current(); |
1012 | 296af7c9 | Blue Swirl | return;
|
1013 | 296af7c9 | Blue Swirl | } |
1014 | 296af7c9 | Blue Swirl | do_vm_stop(reason); |
1015 | 296af7c9 | Blue Swirl | } |
1016 | 296af7c9 | Blue Swirl | |
1017 | 296af7c9 | Blue Swirl | #endif
|
1018 | 296af7c9 | Blue Swirl | |
1019 | 296af7c9 | Blue Swirl | static int qemu_cpu_exec(CPUState *env) |
1020 | 296af7c9 | Blue Swirl | { |
1021 | 296af7c9 | Blue Swirl | int ret;
|
1022 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
1023 | 296af7c9 | Blue Swirl | int64_t ti; |
1024 | 296af7c9 | Blue Swirl | #endif
|
1025 | 296af7c9 | Blue Swirl | |
1026 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
1027 | 296af7c9 | Blue Swirl | ti = profile_getclock(); |
1028 | 296af7c9 | Blue Swirl | #endif
|
1029 | 296af7c9 | Blue Swirl | if (use_icount) {
|
1030 | 296af7c9 | Blue Swirl | int64_t count; |
1031 | 296af7c9 | Blue Swirl | int decr;
|
1032 | 296af7c9 | Blue Swirl | qemu_icount -= (env->icount_decr.u16.low + env->icount_extra); |
1033 | 296af7c9 | Blue Swirl | env->icount_decr.u16.low = 0;
|
1034 | 296af7c9 | Blue Swirl | env->icount_extra = 0;
|
1035 | 296af7c9 | Blue Swirl | count = qemu_icount_round (qemu_next_deadline()); |
1036 | 296af7c9 | Blue Swirl | qemu_icount += count; |
1037 | 296af7c9 | Blue Swirl | decr = (count > 0xffff) ? 0xffff : count; |
1038 | 296af7c9 | Blue Swirl | count -= decr; |
1039 | 296af7c9 | Blue Swirl | env->icount_decr.u16.low = decr; |
1040 | 296af7c9 | Blue Swirl | env->icount_extra = count; |
1041 | 296af7c9 | Blue Swirl | } |
1042 | 296af7c9 | Blue Swirl | ret = cpu_exec(env); |
1043 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
1044 | 296af7c9 | Blue Swirl | qemu_time += profile_getclock() - ti; |
1045 | 296af7c9 | Blue Swirl | #endif
|
1046 | 296af7c9 | Blue Swirl | if (use_icount) {
|
1047 | 296af7c9 | Blue Swirl | /* Fold pending instructions back into the
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1048 | 296af7c9 | Blue Swirl | instruction counter, and clear the interrupt flag. */
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1049 | 296af7c9 | Blue Swirl | qemu_icount -= (env->icount_decr.u16.low |
1050 | 296af7c9 | Blue Swirl | + env->icount_extra); |
1051 | 296af7c9 | Blue Swirl | env->icount_decr.u32 = 0;
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1052 | 296af7c9 | Blue Swirl | env->icount_extra = 0;
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1053 | 296af7c9 | Blue Swirl | } |
1054 | 296af7c9 | Blue Swirl | return ret;
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1055 | 296af7c9 | Blue Swirl | } |
1056 | 296af7c9 | Blue Swirl | |
1057 | 472fb0c4 | Jan Kiszka | bool cpu_exec_all(void) |
1058 | 296af7c9 | Blue Swirl | { |
1059 | 9a36085b | Jan Kiszka | int r;
|
1060 | 9a36085b | Jan Kiszka | |
1061 | 0ab07c62 | Jan Kiszka | if (next_cpu == NULL) { |
1062 | 296af7c9 | Blue Swirl | next_cpu = first_cpu; |
1063 | 0ab07c62 | Jan Kiszka | } |
1064 | c629a4bc | Jan Kiszka | for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu) { |
1065 | 345f4426 | Jan Kiszka | CPUState *env = next_cpu; |
1066 | 296af7c9 | Blue Swirl | |
1067 | 296af7c9 | Blue Swirl | qemu_clock_enable(vm_clock, |
1068 | 345f4426 | Jan Kiszka | (env->singlestep_enabled & SSTEP_NOTIMER) == 0);
|
1069 | 296af7c9 | Blue Swirl | |
1070 | 0ab07c62 | Jan Kiszka | if (qemu_alarm_pending()) {
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1071 | 296af7c9 | Blue Swirl | break;
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1072 | 0ab07c62 | Jan Kiszka | } |
1073 | 3c638d06 | Jan Kiszka | if (cpu_can_run(env)) {
|
1074 | 9a36085b | Jan Kiszka | r = qemu_cpu_exec(env); |
1075 | 9a36085b | Jan Kiszka | if (kvm_enabled()) {
|
1076 | 9a36085b | Jan Kiszka | qemu_kvm_eat_signals(env); |
1077 | 9a36085b | Jan Kiszka | } |
1078 | 9a36085b | Jan Kiszka | if (r == EXCP_DEBUG) {
|
1079 | 3c638d06 | Jan Kiszka | break;
|
1080 | 3c638d06 | Jan Kiszka | } |
1081 | 3c638d06 | Jan Kiszka | } else if (env->stop) { |
1082 | 296af7c9 | Blue Swirl | break;
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1083 | 296af7c9 | Blue Swirl | } |
1084 | 296af7c9 | Blue Swirl | } |
1085 | c629a4bc | Jan Kiszka | exit_request = 0;
|
1086 | 16400322 | Jan Kiszka | return !all_cpu_threads_idle();
|
1087 | 296af7c9 | Blue Swirl | } |
1088 | 296af7c9 | Blue Swirl | |
1089 | 296af7c9 | Blue Swirl | void set_numa_modes(void) |
1090 | 296af7c9 | Blue Swirl | { |
1091 | 296af7c9 | Blue Swirl | CPUState *env; |
1092 | 296af7c9 | Blue Swirl | int i;
|
1093 | 296af7c9 | Blue Swirl | |
1094 | 296af7c9 | Blue Swirl | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1095 | 296af7c9 | Blue Swirl | for (i = 0; i < nb_numa_nodes; i++) { |
1096 | 296af7c9 | Blue Swirl | if (node_cpumask[i] & (1 << env->cpu_index)) { |
1097 | 296af7c9 | Blue Swirl | env->numa_node = i; |
1098 | 296af7c9 | Blue Swirl | } |
1099 | 296af7c9 | Blue Swirl | } |
1100 | 296af7c9 | Blue Swirl | } |
1101 | 296af7c9 | Blue Swirl | } |
1102 | 296af7c9 | Blue Swirl | |
1103 | 296af7c9 | Blue Swirl | void set_cpu_log(const char *optarg) |
1104 | 296af7c9 | Blue Swirl | { |
1105 | 296af7c9 | Blue Swirl | int mask;
|
1106 | 296af7c9 | Blue Swirl | const CPULogItem *item;
|
1107 | 296af7c9 | Blue Swirl | |
1108 | 296af7c9 | Blue Swirl | mask = cpu_str_to_log_mask(optarg); |
1109 | 296af7c9 | Blue Swirl | if (!mask) {
|
1110 | 296af7c9 | Blue Swirl | printf("Log items (comma separated):\n");
|
1111 | 296af7c9 | Blue Swirl | for (item = cpu_log_items; item->mask != 0; item++) { |
1112 | 296af7c9 | Blue Swirl | printf("%-10s %s\n", item->name, item->help);
|
1113 | 296af7c9 | Blue Swirl | } |
1114 | 296af7c9 | Blue Swirl | exit(1);
|
1115 | 296af7c9 | Blue Swirl | } |
1116 | 296af7c9 | Blue Swirl | cpu_set_log(mask); |
1117 | 296af7c9 | Blue Swirl | } |
1118 | 29e922b6 | Blue Swirl | |
1119 | 29e922b6 | Blue Swirl | /* Return the virtual CPU time, based on the instruction counter. */
|
1120 | 29e922b6 | Blue Swirl | int64_t cpu_get_icount(void)
|
1121 | 29e922b6 | Blue Swirl | { |
1122 | 29e922b6 | Blue Swirl | int64_t icount; |
1123 | 29e922b6 | Blue Swirl | CPUState *env = cpu_single_env;; |
1124 | 29e922b6 | Blue Swirl | |
1125 | 29e922b6 | Blue Swirl | icount = qemu_icount; |
1126 | 29e922b6 | Blue Swirl | if (env) {
|
1127 | 29e922b6 | Blue Swirl | if (!can_do_io(env)) {
|
1128 | 29e922b6 | Blue Swirl | fprintf(stderr, "Bad clock read\n");
|
1129 | 29e922b6 | Blue Swirl | } |
1130 | 29e922b6 | Blue Swirl | icount -= (env->icount_decr.u16.low + env->icount_extra); |
1131 | 29e922b6 | Blue Swirl | } |
1132 | 29e922b6 | Blue Swirl | return qemu_icount_bias + (icount << icount_time_shift);
|
1133 | 29e922b6 | Blue Swirl | } |
1134 | 262353cb | Blue Swirl | |
1135 | 9a78eead | Stefan Weil | void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg) |
1136 | 262353cb | Blue Swirl | { |
1137 | 262353cb | Blue Swirl | /* XXX: implement xxx_cpu_list for targets that still miss it */
|
1138 | 262353cb | Blue Swirl | #if defined(cpu_list_id)
|
1139 | 262353cb | Blue Swirl | cpu_list_id(f, cpu_fprintf, optarg); |
1140 | 262353cb | Blue Swirl | #elif defined(cpu_list)
|
1141 | 262353cb | Blue Swirl | cpu_list(f, cpu_fprintf); /* deprecated */
|
1142 | 262353cb | Blue Swirl | #endif
|
1143 | 262353cb | Blue Swirl | } |