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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 | c0532a76 | Marcelo Tosatti | #ifdef CONFIG_LINUX
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38 | c0532a76 | Marcelo Tosatti | #include <sys/prctl.h> |
39 | c0532a76 | Marcelo Tosatti | #endif
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40 | 296af7c9 | Blue Swirl | |
41 | 7277e027 | Blue Swirl | #ifdef SIGRTMIN
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42 | 7277e027 | Blue Swirl | #define SIG_IPI (SIGRTMIN+4) |
43 | 7277e027 | Blue Swirl | #else
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44 | 7277e027 | Blue Swirl | #define SIG_IPI SIGUSR1
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45 | 7277e027 | Blue Swirl | #endif
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46 | 7277e027 | Blue Swirl | |
47 | c0532a76 | Marcelo Tosatti | #ifndef PR_MCE_KILL
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48 | c0532a76 | Marcelo Tosatti | #define PR_MCE_KILL 33 |
49 | c0532a76 | Marcelo Tosatti | #endif
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50 | c0532a76 | Marcelo Tosatti | |
51 | 296af7c9 | Blue Swirl | static CPUState *next_cpu;
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52 | 296af7c9 | Blue Swirl | |
53 | 296af7c9 | Blue Swirl | /***********************************************************/
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54 | 296af7c9 | Blue Swirl | void hw_error(const char *fmt, ...) |
55 | 296af7c9 | Blue Swirl | { |
56 | 296af7c9 | Blue Swirl | va_list ap; |
57 | 296af7c9 | Blue Swirl | CPUState *env; |
58 | 296af7c9 | Blue Swirl | |
59 | 296af7c9 | Blue Swirl | va_start(ap, fmt); |
60 | 296af7c9 | Blue Swirl | fprintf(stderr, "qemu: hardware error: ");
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61 | 296af7c9 | Blue Swirl | vfprintf(stderr, fmt, ap); |
62 | 296af7c9 | Blue Swirl | fprintf(stderr, "\n");
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63 | 296af7c9 | Blue Swirl | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
64 | 296af7c9 | Blue Swirl | fprintf(stderr, "CPU #%d:\n", env->cpu_index);
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65 | 296af7c9 | Blue Swirl | #ifdef TARGET_I386
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66 | 296af7c9 | Blue Swirl | cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU); |
67 | 296af7c9 | Blue Swirl | #else
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68 | 296af7c9 | Blue Swirl | cpu_dump_state(env, stderr, fprintf, 0);
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69 | 296af7c9 | Blue Swirl | #endif
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70 | 296af7c9 | Blue Swirl | } |
71 | 296af7c9 | Blue Swirl | va_end(ap); |
72 | 296af7c9 | Blue Swirl | abort(); |
73 | 296af7c9 | Blue Swirl | } |
74 | 296af7c9 | Blue Swirl | |
75 | 296af7c9 | Blue Swirl | void cpu_synchronize_all_states(void) |
76 | 296af7c9 | Blue Swirl | { |
77 | 296af7c9 | Blue Swirl | CPUState *cpu; |
78 | 296af7c9 | Blue Swirl | |
79 | 296af7c9 | Blue Swirl | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
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80 | 296af7c9 | Blue Swirl | cpu_synchronize_state(cpu); |
81 | 296af7c9 | Blue Swirl | } |
82 | 296af7c9 | Blue Swirl | } |
83 | 296af7c9 | Blue Swirl | |
84 | 296af7c9 | Blue Swirl | void cpu_synchronize_all_post_reset(void) |
85 | 296af7c9 | Blue Swirl | { |
86 | 296af7c9 | Blue Swirl | CPUState *cpu; |
87 | 296af7c9 | Blue Swirl | |
88 | 296af7c9 | Blue Swirl | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
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89 | 296af7c9 | Blue Swirl | cpu_synchronize_post_reset(cpu); |
90 | 296af7c9 | Blue Swirl | } |
91 | 296af7c9 | Blue Swirl | } |
92 | 296af7c9 | Blue Swirl | |
93 | 296af7c9 | Blue Swirl | void cpu_synchronize_all_post_init(void) |
94 | 296af7c9 | Blue Swirl | { |
95 | 296af7c9 | Blue Swirl | CPUState *cpu; |
96 | 296af7c9 | Blue Swirl | |
97 | 296af7c9 | Blue Swirl | for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
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98 | 296af7c9 | Blue Swirl | cpu_synchronize_post_init(cpu); |
99 | 296af7c9 | Blue Swirl | } |
100 | 296af7c9 | Blue Swirl | } |
101 | 296af7c9 | Blue Swirl | |
102 | 3ae9501c | Marcelo Tosatti | int cpu_is_stopped(CPUState *env)
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103 | 3ae9501c | Marcelo Tosatti | { |
104 | 3ae9501c | Marcelo Tosatti | return !vm_running || env->stopped;
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105 | 3ae9501c | Marcelo Tosatti | } |
106 | 3ae9501c | Marcelo Tosatti | |
107 | 296af7c9 | Blue Swirl | static void do_vm_stop(int reason) |
108 | 296af7c9 | Blue Swirl | { |
109 | 296af7c9 | Blue Swirl | if (vm_running) {
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110 | 296af7c9 | Blue Swirl | cpu_disable_ticks(); |
111 | 296af7c9 | Blue Swirl | vm_running = 0;
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112 | 296af7c9 | Blue Swirl | pause_all_vcpus(); |
113 | 296af7c9 | Blue Swirl | vm_state_notify(0, reason);
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114 | 55df6f33 | Michael S. Tsirkin | qemu_aio_flush(); |
115 | 55df6f33 | Michael S. Tsirkin | bdrv_flush_all(); |
116 | 296af7c9 | Blue Swirl | monitor_protocol_event(QEVENT_STOP, NULL);
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117 | 296af7c9 | Blue Swirl | } |
118 | 296af7c9 | Blue Swirl | } |
119 | 296af7c9 | Blue Swirl | |
120 | 296af7c9 | Blue Swirl | static int cpu_can_run(CPUState *env) |
121 | 296af7c9 | Blue Swirl | { |
122 | 296af7c9 | Blue Swirl | if (env->stop)
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123 | 296af7c9 | Blue Swirl | return 0; |
124 | 55274a30 | Paolo Bonzini | if (env->stopped || !vm_running)
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125 | 296af7c9 | Blue Swirl | return 0; |
126 | 296af7c9 | Blue Swirl | return 1; |
127 | 296af7c9 | Blue Swirl | } |
128 | 296af7c9 | Blue Swirl | |
129 | 296af7c9 | Blue Swirl | static int cpu_has_work(CPUState *env) |
130 | 296af7c9 | Blue Swirl | { |
131 | 296af7c9 | Blue Swirl | if (env->stop)
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132 | 296af7c9 | Blue Swirl | return 1; |
133 | e82bcec2 | Marcelo Tosatti | if (env->queued_work_first)
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134 | e82bcec2 | Marcelo Tosatti | return 1; |
135 | 55274a30 | Paolo Bonzini | if (env->stopped || !vm_running)
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136 | 296af7c9 | Blue Swirl | return 0; |
137 | 296af7c9 | Blue Swirl | if (!env->halted)
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138 | 296af7c9 | Blue Swirl | return 1; |
139 | 296af7c9 | Blue Swirl | if (qemu_cpu_has_work(env))
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140 | 296af7c9 | Blue Swirl | return 1; |
141 | 296af7c9 | Blue Swirl | return 0; |
142 | 296af7c9 | Blue Swirl | } |
143 | 296af7c9 | Blue Swirl | |
144 | 472fb0c4 | Jan Kiszka | static int any_cpu_has_work(void) |
145 | 296af7c9 | Blue Swirl | { |
146 | 296af7c9 | Blue Swirl | CPUState *env; |
147 | 296af7c9 | Blue Swirl | |
148 | 296af7c9 | Blue Swirl | for (env = first_cpu; env != NULL; env = env->next_cpu) |
149 | 296af7c9 | Blue Swirl | if (cpu_has_work(env))
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150 | 296af7c9 | Blue Swirl | return 1; |
151 | 296af7c9 | Blue Swirl | return 0; |
152 | 296af7c9 | Blue Swirl | } |
153 | 296af7c9 | Blue Swirl | |
154 | 3c638d06 | Jan Kiszka | static void cpu_debug_handler(CPUState *env) |
155 | 3c638d06 | Jan Kiszka | { |
156 | 3c638d06 | Jan Kiszka | gdb_set_stop_cpu(env); |
157 | 3c638d06 | Jan Kiszka | debug_requested = EXCP_DEBUG; |
158 | 3c638d06 | Jan Kiszka | vm_stop(EXCP_DEBUG); |
159 | 3c638d06 | Jan Kiszka | } |
160 | 3c638d06 | Jan Kiszka | |
161 | 296af7c9 | Blue Swirl | #ifndef _WIN32
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162 | 296af7c9 | Blue Swirl | static int io_thread_fd = -1; |
163 | 296af7c9 | Blue Swirl | |
164 | 296af7c9 | Blue Swirl | static void qemu_event_increment(void) |
165 | 296af7c9 | Blue Swirl | { |
166 | 296af7c9 | Blue Swirl | /* Write 8 bytes to be compatible with eventfd. */
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167 | 26a82330 | Blue Swirl | static const uint64_t val = 1; |
168 | 296af7c9 | Blue Swirl | ssize_t ret; |
169 | 296af7c9 | Blue Swirl | |
170 | 296af7c9 | Blue Swirl | if (io_thread_fd == -1) |
171 | 296af7c9 | Blue Swirl | return;
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172 | 296af7c9 | Blue Swirl | |
173 | 296af7c9 | Blue Swirl | do {
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174 | 296af7c9 | Blue Swirl | ret = write(io_thread_fd, &val, sizeof(val));
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175 | 296af7c9 | Blue Swirl | } while (ret < 0 && errno == EINTR); |
176 | 296af7c9 | Blue Swirl | |
177 | 296af7c9 | Blue Swirl | /* EAGAIN is fine, a read must be pending. */
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178 | 296af7c9 | Blue Swirl | if (ret < 0 && errno != EAGAIN) { |
179 | 296af7c9 | Blue Swirl | fprintf(stderr, "qemu_event_increment: write() filed: %s\n",
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180 | 296af7c9 | Blue Swirl | strerror(errno)); |
181 | 296af7c9 | Blue Swirl | exit (1);
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182 | 296af7c9 | Blue Swirl | } |
183 | 296af7c9 | Blue Swirl | } |
184 | 296af7c9 | Blue Swirl | |
185 | 296af7c9 | Blue Swirl | static void qemu_event_read(void *opaque) |
186 | 296af7c9 | Blue Swirl | { |
187 | 296af7c9 | Blue Swirl | int fd = (unsigned long)opaque; |
188 | 296af7c9 | Blue Swirl | ssize_t len; |
189 | 296af7c9 | Blue Swirl | char buffer[512]; |
190 | 296af7c9 | Blue Swirl | |
191 | 296af7c9 | Blue Swirl | /* Drain the notify pipe. For eventfd, only 8 bytes will be read. */
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192 | 296af7c9 | Blue Swirl | do {
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193 | 296af7c9 | Blue Swirl | len = read(fd, buffer, sizeof(buffer));
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194 | 296af7c9 | Blue Swirl | } while ((len == -1 && errno == EINTR) || len == sizeof(buffer)); |
195 | 296af7c9 | Blue Swirl | } |
196 | 296af7c9 | Blue Swirl | |
197 | 296af7c9 | Blue Swirl | static int qemu_event_init(void) |
198 | 296af7c9 | Blue Swirl | { |
199 | 296af7c9 | Blue Swirl | int err;
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200 | 296af7c9 | Blue Swirl | int fds[2]; |
201 | 296af7c9 | Blue Swirl | |
202 | 296af7c9 | Blue Swirl | err = qemu_eventfd(fds); |
203 | 296af7c9 | Blue Swirl | if (err == -1) |
204 | 296af7c9 | Blue Swirl | return -errno;
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205 | 296af7c9 | Blue Swirl | |
206 | 296af7c9 | Blue Swirl | err = fcntl_setfl(fds[0], O_NONBLOCK);
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207 | 296af7c9 | Blue Swirl | if (err < 0) |
208 | 296af7c9 | Blue Swirl | goto fail;
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209 | 296af7c9 | Blue Swirl | |
210 | 296af7c9 | Blue Swirl | err = fcntl_setfl(fds[1], O_NONBLOCK);
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211 | 296af7c9 | Blue Swirl | if (err < 0) |
212 | 296af7c9 | Blue Swirl | goto fail;
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213 | 296af7c9 | Blue Swirl | |
214 | 296af7c9 | Blue Swirl | qemu_set_fd_handler2(fds[0], NULL, qemu_event_read, NULL, |
215 | 296af7c9 | Blue Swirl | (void *)(unsigned long)fds[0]); |
216 | 296af7c9 | Blue Swirl | |
217 | 296af7c9 | Blue Swirl | io_thread_fd = fds[1];
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218 | 296af7c9 | Blue Swirl | return 0; |
219 | 296af7c9 | Blue Swirl | |
220 | 296af7c9 | Blue Swirl | fail:
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221 | 296af7c9 | Blue Swirl | close(fds[0]);
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222 | 296af7c9 | Blue Swirl | close(fds[1]);
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223 | 296af7c9 | Blue Swirl | return err;
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224 | 296af7c9 | Blue Swirl | } |
225 | 55f8d6ac | Jan Kiszka | |
226 | 55f8d6ac | Jan Kiszka | static void dummy_signal(int sig) |
227 | 55f8d6ac | Jan Kiszka | { |
228 | 55f8d6ac | Jan Kiszka | } |
229 | 55f8d6ac | Jan Kiszka | |
230 | d0f294ce | Jan Kiszka | /* If we have signalfd, we mask out the signals we want to handle and then
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231 | d0f294ce | Jan Kiszka | * use signalfd to listen for them. We rely on whatever the current signal
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232 | d0f294ce | Jan Kiszka | * handler is to dispatch the signals when we receive them.
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233 | d0f294ce | Jan Kiszka | */
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234 | d0f294ce | Jan Kiszka | static void sigfd_handler(void *opaque) |
235 | d0f294ce | Jan Kiszka | { |
236 | d0f294ce | Jan Kiszka | int fd = (unsigned long) opaque; |
237 | d0f294ce | Jan Kiszka | struct qemu_signalfd_siginfo info;
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238 | d0f294ce | Jan Kiszka | struct sigaction action;
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239 | d0f294ce | Jan Kiszka | ssize_t len; |
240 | d0f294ce | Jan Kiszka | |
241 | d0f294ce | Jan Kiszka | while (1) { |
242 | d0f294ce | Jan Kiszka | do {
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243 | d0f294ce | Jan Kiszka | len = read(fd, &info, sizeof(info));
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244 | d0f294ce | Jan Kiszka | } while (len == -1 && errno == EINTR); |
245 | d0f294ce | Jan Kiszka | |
246 | d0f294ce | Jan Kiszka | if (len == -1 && errno == EAGAIN) { |
247 | d0f294ce | Jan Kiszka | break;
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248 | d0f294ce | Jan Kiszka | } |
249 | d0f294ce | Jan Kiszka | |
250 | d0f294ce | Jan Kiszka | if (len != sizeof(info)) { |
251 | d0f294ce | Jan Kiszka | printf("read from sigfd returned %zd: %m\n", len);
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252 | d0f294ce | Jan Kiszka | return;
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253 | d0f294ce | Jan Kiszka | } |
254 | d0f294ce | Jan Kiszka | |
255 | d0f294ce | Jan Kiszka | sigaction(info.ssi_signo, NULL, &action);
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256 | d0f294ce | Jan Kiszka | if ((action.sa_flags & SA_SIGINFO) && action.sa_sigaction) {
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257 | d0f294ce | Jan Kiszka | action.sa_sigaction(info.ssi_signo, |
258 | d0f294ce | Jan Kiszka | (siginfo_t *)&info, NULL);
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259 | d0f294ce | Jan Kiszka | } else if (action.sa_handler) { |
260 | d0f294ce | Jan Kiszka | action.sa_handler(info.ssi_signo); |
261 | d0f294ce | Jan Kiszka | } |
262 | d0f294ce | Jan Kiszka | } |
263 | d0f294ce | Jan Kiszka | } |
264 | d0f294ce | Jan Kiszka | |
265 | d0f294ce | Jan Kiszka | static int qemu_signalfd_init(sigset_t mask) |
266 | d0f294ce | Jan Kiszka | { |
267 | d0f294ce | Jan Kiszka | int sigfd;
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268 | d0f294ce | Jan Kiszka | |
269 | d0f294ce | Jan Kiszka | sigfd = qemu_signalfd(&mask); |
270 | d0f294ce | Jan Kiszka | if (sigfd == -1) { |
271 | d0f294ce | Jan Kiszka | fprintf(stderr, "failed to create signalfd\n");
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272 | d0f294ce | Jan Kiszka | return -errno;
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273 | d0f294ce | Jan Kiszka | } |
274 | d0f294ce | Jan Kiszka | |
275 | d0f294ce | Jan Kiszka | fcntl_setfl(sigfd, O_NONBLOCK); |
276 | d0f294ce | Jan Kiszka | |
277 | d0f294ce | Jan Kiszka | qemu_set_fd_handler2(sigfd, NULL, sigfd_handler, NULL, |
278 | d0f294ce | Jan Kiszka | (void *)(unsigned long) sigfd); |
279 | d0f294ce | Jan Kiszka | |
280 | d0f294ce | Jan Kiszka | return 0; |
281 | d0f294ce | Jan Kiszka | } |
282 | d0f294ce | Jan Kiszka | |
283 | 9a36085b | Jan Kiszka | static void sigbus_reraise(void); |
284 | 9a36085b | Jan Kiszka | |
285 | 9a36085b | Jan Kiszka | static void qemu_kvm_eat_signals(CPUState *env) |
286 | 9a36085b | Jan Kiszka | { |
287 | 9a36085b | Jan Kiszka | struct timespec ts = { 0, 0 }; |
288 | 9a36085b | Jan Kiszka | siginfo_t siginfo; |
289 | 9a36085b | Jan Kiszka | sigset_t waitset; |
290 | 9a36085b | Jan Kiszka | sigset_t chkset; |
291 | 9a36085b | Jan Kiszka | int r;
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292 | 9a36085b | Jan Kiszka | |
293 | 9a36085b | Jan Kiszka | sigemptyset(&waitset); |
294 | 9a36085b | Jan Kiszka | sigaddset(&waitset, SIG_IPI); |
295 | 9a36085b | Jan Kiszka | sigaddset(&waitset, SIGBUS); |
296 | 9a36085b | Jan Kiszka | |
297 | 9a36085b | Jan Kiszka | do {
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298 | 9a36085b | Jan Kiszka | r = sigtimedwait(&waitset, &siginfo, &ts); |
299 | 9a36085b | Jan Kiszka | if (r == -1 && !(errno == EAGAIN || errno == EINTR)) { |
300 | 9a36085b | Jan Kiszka | perror("sigtimedwait");
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301 | 9a36085b | Jan Kiszka | exit(1);
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302 | 9a36085b | Jan Kiszka | } |
303 | 9a36085b | Jan Kiszka | |
304 | 9a36085b | Jan Kiszka | switch (r) {
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305 | 9a36085b | Jan Kiszka | #ifdef CONFIG_IOTHREAD
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306 | 9a36085b | Jan Kiszka | case SIGBUS:
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307 | 9a36085b | Jan Kiszka | if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr)) {
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308 | 9a36085b | Jan Kiszka | sigbus_reraise(); |
309 | 9a36085b | Jan Kiszka | } |
310 | 9a36085b | Jan Kiszka | break;
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311 | 9a36085b | Jan Kiszka | #endif
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312 | 9a36085b | Jan Kiszka | default:
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313 | 9a36085b | Jan Kiszka | break;
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314 | 9a36085b | Jan Kiszka | } |
315 | 9a36085b | Jan Kiszka | |
316 | 9a36085b | Jan Kiszka | r = sigpending(&chkset); |
317 | 9a36085b | Jan Kiszka | if (r == -1) { |
318 | 9a36085b | Jan Kiszka | perror("sigpending");
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319 | 9a36085b | Jan Kiszka | exit(1);
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320 | 9a36085b | Jan Kiszka | } |
321 | 9a36085b | Jan Kiszka | } while (sigismember(&chkset, SIG_IPI) || sigismember(&chkset, SIGBUS));
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322 | 9a36085b | Jan Kiszka | } |
323 | 9a36085b | Jan Kiszka | |
324 | 55f8d6ac | Jan Kiszka | #else /* _WIN32 */ |
325 | 55f8d6ac | Jan Kiszka | |
326 | 296af7c9 | Blue Swirl | HANDLE qemu_event_handle; |
327 | 296af7c9 | Blue Swirl | |
328 | 296af7c9 | Blue Swirl | static void dummy_event_handler(void *opaque) |
329 | 296af7c9 | Blue Swirl | { |
330 | 296af7c9 | Blue Swirl | } |
331 | 296af7c9 | Blue Swirl | |
332 | 296af7c9 | Blue Swirl | static int qemu_event_init(void) |
333 | 296af7c9 | Blue Swirl | { |
334 | 296af7c9 | Blue Swirl | qemu_event_handle = CreateEvent(NULL, FALSE, FALSE, NULL); |
335 | 296af7c9 | Blue Swirl | if (!qemu_event_handle) {
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336 | 296af7c9 | Blue Swirl | fprintf(stderr, "Failed CreateEvent: %ld\n", GetLastError());
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337 | 296af7c9 | Blue Swirl | return -1; |
338 | 296af7c9 | Blue Swirl | } |
339 | 296af7c9 | Blue Swirl | qemu_add_wait_object(qemu_event_handle, dummy_event_handler, NULL);
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340 | 296af7c9 | Blue Swirl | return 0; |
341 | 296af7c9 | Blue Swirl | } |
342 | 296af7c9 | Blue Swirl | |
343 | 296af7c9 | Blue Swirl | static void qemu_event_increment(void) |
344 | 296af7c9 | Blue Swirl | { |
345 | 296af7c9 | Blue Swirl | if (!SetEvent(qemu_event_handle)) {
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346 | 296af7c9 | Blue Swirl | fprintf(stderr, "qemu_event_increment: SetEvent failed: %ld\n",
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347 | 296af7c9 | Blue Swirl | GetLastError()); |
348 | 296af7c9 | Blue Swirl | exit (1);
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349 | 296af7c9 | Blue Swirl | } |
350 | 296af7c9 | Blue Swirl | } |
351 | 9a36085b | Jan Kiszka | |
352 | 9a36085b | Jan Kiszka | static void qemu_kvm_eat_signals(CPUState *env) |
353 | 9a36085b | Jan Kiszka | { |
354 | 9a36085b | Jan Kiszka | } |
355 | 55f8d6ac | Jan Kiszka | #endif /* _WIN32 */ |
356 | 296af7c9 | Blue Swirl | |
357 | 296af7c9 | Blue Swirl | #ifndef CONFIG_IOTHREAD
|
358 | ff48eb5f | Jan Kiszka | static void qemu_kvm_init_cpu_signals(CPUState *env) |
359 | ff48eb5f | Jan Kiszka | { |
360 | ff48eb5f | Jan Kiszka | #ifndef _WIN32
|
361 | ff48eb5f | Jan Kiszka | int r;
|
362 | ff48eb5f | Jan Kiszka | sigset_t set; |
363 | ff48eb5f | Jan Kiszka | struct sigaction sigact;
|
364 | ff48eb5f | Jan Kiszka | |
365 | ff48eb5f | Jan Kiszka | memset(&sigact, 0, sizeof(sigact)); |
366 | ff48eb5f | Jan Kiszka | sigact.sa_handler = dummy_signal; |
367 | ff48eb5f | Jan Kiszka | sigaction(SIG_IPI, &sigact, NULL);
|
368 | ff48eb5f | Jan Kiszka | |
369 | ff48eb5f | Jan Kiszka | sigemptyset(&set); |
370 | ff48eb5f | Jan Kiszka | sigaddset(&set, SIG_IPI); |
371 | ff48eb5f | Jan Kiszka | pthread_sigmask(SIG_BLOCK, &set, NULL);
|
372 | ff48eb5f | Jan Kiszka | |
373 | ff48eb5f | Jan Kiszka | pthread_sigmask(SIG_BLOCK, NULL, &set);
|
374 | ff48eb5f | Jan Kiszka | sigdelset(&set, SIG_IPI); |
375 | ff48eb5f | Jan Kiszka | sigdelset(&set, SIGBUS); |
376 | ff48eb5f | Jan Kiszka | r = kvm_set_signal_mask(env, &set); |
377 | ff48eb5f | Jan Kiszka | if (r) {
|
378 | ff48eb5f | Jan Kiszka | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r));
|
379 | ff48eb5f | Jan Kiszka | exit(1);
|
380 | ff48eb5f | Jan Kiszka | } |
381 | ff48eb5f | Jan Kiszka | #endif
|
382 | ff48eb5f | Jan Kiszka | } |
383 | ff48eb5f | Jan Kiszka | |
384 | 296af7c9 | Blue Swirl | int qemu_init_main_loop(void) |
385 | 296af7c9 | Blue Swirl | { |
386 | d0f294ce | Jan Kiszka | #ifndef _WIN32
|
387 | d0f294ce | Jan Kiszka | sigset_t blocked_signals; |
388 | d0f294ce | Jan Kiszka | int ret;
|
389 | d0f294ce | Jan Kiszka | |
390 | d0f294ce | Jan Kiszka | sigemptyset(&blocked_signals); |
391 | d0f294ce | Jan Kiszka | |
392 | d0f294ce | Jan Kiszka | ret = qemu_signalfd_init(blocked_signals); |
393 | d0f294ce | Jan Kiszka | if (ret) {
|
394 | d0f294ce | Jan Kiszka | return ret;
|
395 | d0f294ce | Jan Kiszka | } |
396 | d0f294ce | Jan Kiszka | #endif
|
397 | 3c638d06 | Jan Kiszka | cpu_set_debug_excp_handler(cpu_debug_handler); |
398 | 3c638d06 | Jan Kiszka | |
399 | 296af7c9 | Blue Swirl | return qemu_event_init();
|
400 | 296af7c9 | Blue Swirl | } |
401 | 296af7c9 | Blue Swirl | |
402 | 7277e027 | Blue Swirl | void qemu_main_loop_start(void) |
403 | 7277e027 | Blue Swirl | { |
404 | 7277e027 | Blue Swirl | } |
405 | 7277e027 | Blue Swirl | |
406 | 296af7c9 | Blue Swirl | void qemu_init_vcpu(void *_env) |
407 | 296af7c9 | Blue Swirl | { |
408 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
409 | 84b4915d | Jan Kiszka | int r;
|
410 | 296af7c9 | Blue Swirl | |
411 | 296af7c9 | Blue Swirl | env->nr_cores = smp_cores; |
412 | 296af7c9 | Blue Swirl | env->nr_threads = smp_threads; |
413 | 84b4915d | Jan Kiszka | |
414 | 84b4915d | Jan Kiszka | if (kvm_enabled()) {
|
415 | 84b4915d | Jan Kiszka | r = kvm_init_vcpu(env); |
416 | 84b4915d | Jan Kiszka | if (r < 0) { |
417 | 84b4915d | Jan Kiszka | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r));
|
418 | 84b4915d | Jan Kiszka | exit(1);
|
419 | 84b4915d | Jan Kiszka | } |
420 | ff48eb5f | Jan Kiszka | qemu_kvm_init_cpu_signals(env); |
421 | 84b4915d | Jan Kiszka | } |
422 | 296af7c9 | Blue Swirl | } |
423 | 296af7c9 | Blue Swirl | |
424 | 296af7c9 | Blue Swirl | int qemu_cpu_self(void *env) |
425 | 296af7c9 | Blue Swirl | { |
426 | 296af7c9 | Blue Swirl | return 1; |
427 | 296af7c9 | Blue Swirl | } |
428 | 296af7c9 | Blue Swirl | |
429 | e82bcec2 | Marcelo Tosatti | void run_on_cpu(CPUState *env, void (*func)(void *data), void *data) |
430 | e82bcec2 | Marcelo Tosatti | { |
431 | e82bcec2 | Marcelo Tosatti | func(data); |
432 | e82bcec2 | Marcelo Tosatti | } |
433 | e82bcec2 | Marcelo Tosatti | |
434 | 296af7c9 | Blue Swirl | void resume_all_vcpus(void) |
435 | 296af7c9 | Blue Swirl | { |
436 | 296af7c9 | Blue Swirl | } |
437 | 296af7c9 | Blue Swirl | |
438 | 296af7c9 | Blue Swirl | void pause_all_vcpus(void) |
439 | 296af7c9 | Blue Swirl | { |
440 | 296af7c9 | Blue Swirl | } |
441 | 296af7c9 | Blue Swirl | |
442 | 296af7c9 | Blue Swirl | void qemu_cpu_kick(void *env) |
443 | 296af7c9 | Blue Swirl | { |
444 | 296af7c9 | Blue Swirl | return;
|
445 | 296af7c9 | Blue Swirl | } |
446 | 296af7c9 | Blue Swirl | |
447 | 296af7c9 | Blue Swirl | void qemu_notify_event(void) |
448 | 296af7c9 | Blue Swirl | { |
449 | 296af7c9 | Blue Swirl | CPUState *env = cpu_single_env; |
450 | 296af7c9 | Blue Swirl | |
451 | 296af7c9 | Blue Swirl | qemu_event_increment (); |
452 | 296af7c9 | Blue Swirl | if (env) {
|
453 | 296af7c9 | Blue Swirl | cpu_exit(env); |
454 | 296af7c9 | Blue Swirl | } |
455 | 296af7c9 | Blue Swirl | if (next_cpu && env != next_cpu) {
|
456 | 296af7c9 | Blue Swirl | cpu_exit(next_cpu); |
457 | 296af7c9 | Blue Swirl | } |
458 | 38145df2 | Jan Kiszka | exit_request = 1;
|
459 | 296af7c9 | Blue Swirl | } |
460 | 296af7c9 | Blue Swirl | |
461 | 296af7c9 | Blue Swirl | void qemu_mutex_lock_iothread(void) {} |
462 | 296af7c9 | Blue Swirl | void qemu_mutex_unlock_iothread(void) {} |
463 | 296af7c9 | Blue Swirl | |
464 | b4a3d965 | Jan Kiszka | void cpu_stop_current(void) |
465 | b4a3d965 | Jan Kiszka | { |
466 | b4a3d965 | Jan Kiszka | } |
467 | b4a3d965 | Jan Kiszka | |
468 | 296af7c9 | Blue Swirl | void vm_stop(int reason) |
469 | 296af7c9 | Blue Swirl | { |
470 | 296af7c9 | Blue Swirl | do_vm_stop(reason); |
471 | 296af7c9 | Blue Swirl | } |
472 | 296af7c9 | Blue Swirl | |
473 | 296af7c9 | Blue Swirl | #else /* CONFIG_IOTHREAD */ |
474 | 296af7c9 | Blue Swirl | |
475 | 296af7c9 | Blue Swirl | #include "qemu-thread.h" |
476 | 296af7c9 | Blue Swirl | |
477 | 296af7c9 | Blue Swirl | QemuMutex qemu_global_mutex; |
478 | 296af7c9 | Blue Swirl | static QemuMutex qemu_fair_mutex;
|
479 | 296af7c9 | Blue Swirl | |
480 | 296af7c9 | Blue Swirl | static QemuThread io_thread;
|
481 | 296af7c9 | Blue Swirl | |
482 | 296af7c9 | Blue Swirl | static QemuThread *tcg_cpu_thread;
|
483 | 296af7c9 | Blue Swirl | static QemuCond *tcg_halt_cond;
|
484 | 296af7c9 | Blue Swirl | |
485 | 296af7c9 | Blue Swirl | static int qemu_system_ready; |
486 | 296af7c9 | Blue Swirl | /* cpu creation */
|
487 | 296af7c9 | Blue Swirl | static QemuCond qemu_cpu_cond;
|
488 | 296af7c9 | Blue Swirl | /* system init */
|
489 | 296af7c9 | Blue Swirl | static QemuCond qemu_system_cond;
|
490 | 296af7c9 | Blue Swirl | static QemuCond qemu_pause_cond;
|
491 | e82bcec2 | Marcelo Tosatti | static QemuCond qemu_work_cond;
|
492 | 296af7c9 | Blue Swirl | |
493 | 55f8d6ac | Jan Kiszka | static void cpu_signal(int sig) |
494 | 55f8d6ac | Jan Kiszka | { |
495 | 55f8d6ac | Jan Kiszka | if (cpu_single_env) {
|
496 | 55f8d6ac | Jan Kiszka | cpu_exit(cpu_single_env); |
497 | 55f8d6ac | Jan Kiszka | } |
498 | 55f8d6ac | Jan Kiszka | exit_request = 1;
|
499 | 55f8d6ac | Jan Kiszka | } |
500 | 55f8d6ac | Jan Kiszka | |
501 | 55f8d6ac | Jan Kiszka | static void qemu_kvm_init_cpu_signals(CPUState *env) |
502 | 55f8d6ac | Jan Kiszka | { |
503 | 55f8d6ac | Jan Kiszka | int r;
|
504 | 55f8d6ac | Jan Kiszka | sigset_t set; |
505 | 55f8d6ac | Jan Kiszka | struct sigaction sigact;
|
506 | 55f8d6ac | Jan Kiszka | |
507 | 55f8d6ac | Jan Kiszka | memset(&sigact, 0, sizeof(sigact)); |
508 | 55f8d6ac | Jan Kiszka | sigact.sa_handler = dummy_signal; |
509 | 55f8d6ac | Jan Kiszka | sigaction(SIG_IPI, &sigact, NULL);
|
510 | 55f8d6ac | Jan Kiszka | |
511 | 55f8d6ac | Jan Kiszka | pthread_sigmask(SIG_BLOCK, NULL, &set);
|
512 | 55f8d6ac | Jan Kiszka | sigdelset(&set, SIG_IPI); |
513 | 55f8d6ac | Jan Kiszka | sigdelset(&set, SIGBUS); |
514 | 55f8d6ac | Jan Kiszka | r = kvm_set_signal_mask(env, &set); |
515 | 55f8d6ac | Jan Kiszka | if (r) {
|
516 | 55f8d6ac | Jan Kiszka | fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(-r));
|
517 | 55f8d6ac | Jan Kiszka | exit(1);
|
518 | 55f8d6ac | Jan Kiszka | } |
519 | 55f8d6ac | Jan Kiszka | } |
520 | 55f8d6ac | Jan Kiszka | |
521 | 55f8d6ac | Jan Kiszka | static void qemu_tcg_init_cpu_signals(void) |
522 | 55f8d6ac | Jan Kiszka | { |
523 | 55f8d6ac | Jan Kiszka | sigset_t set; |
524 | 55f8d6ac | Jan Kiszka | struct sigaction sigact;
|
525 | 55f8d6ac | Jan Kiszka | |
526 | 55f8d6ac | Jan Kiszka | memset(&sigact, 0, sizeof(sigact)); |
527 | 55f8d6ac | Jan Kiszka | sigact.sa_handler = cpu_signal; |
528 | 55f8d6ac | Jan Kiszka | sigaction(SIG_IPI, &sigact, NULL);
|
529 | 55f8d6ac | Jan Kiszka | |
530 | 55f8d6ac | Jan Kiszka | sigemptyset(&set); |
531 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIG_IPI); |
532 | 55f8d6ac | Jan Kiszka | pthread_sigmask(SIG_UNBLOCK, &set, NULL);
|
533 | 55f8d6ac | Jan Kiszka | } |
534 | 55f8d6ac | Jan Kiszka | |
535 | 55f8d6ac | Jan Kiszka | static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo, |
536 | 55f8d6ac | Jan Kiszka | void *ctx);
|
537 | 55f8d6ac | Jan Kiszka | |
538 | 55f8d6ac | Jan Kiszka | static sigset_t block_io_signals(void) |
539 | 55f8d6ac | Jan Kiszka | { |
540 | 55f8d6ac | Jan Kiszka | sigset_t set; |
541 | 55f8d6ac | Jan Kiszka | struct sigaction action;
|
542 | 55f8d6ac | Jan Kiszka | |
543 | 55f8d6ac | Jan Kiszka | /* SIGUSR2 used by posix-aio-compat.c */
|
544 | 55f8d6ac | Jan Kiszka | sigemptyset(&set); |
545 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIGUSR2); |
546 | 55f8d6ac | Jan Kiszka | pthread_sigmask(SIG_UNBLOCK, &set, NULL);
|
547 | 55f8d6ac | Jan Kiszka | |
548 | 55f8d6ac | Jan Kiszka | sigemptyset(&set); |
549 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIGIO); |
550 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIGALRM); |
551 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIG_IPI); |
552 | 55f8d6ac | Jan Kiszka | sigaddset(&set, SIGBUS); |
553 | 55f8d6ac | Jan Kiszka | pthread_sigmask(SIG_BLOCK, &set, NULL);
|
554 | 55f8d6ac | Jan Kiszka | |
555 | 55f8d6ac | Jan Kiszka | memset(&action, 0, sizeof(action)); |
556 | 55f8d6ac | Jan Kiszka | action.sa_flags = SA_SIGINFO; |
557 | 55f8d6ac | Jan Kiszka | action.sa_sigaction = (void (*)(int, siginfo_t*, void*))sigbus_handler; |
558 | 55f8d6ac | Jan Kiszka | sigaction(SIGBUS, &action, NULL);
|
559 | 55f8d6ac | Jan Kiszka | prctl(PR_MCE_KILL, 1, 1, 0, 0); |
560 | 55f8d6ac | Jan Kiszka | |
561 | 55f8d6ac | Jan Kiszka | return set;
|
562 | 55f8d6ac | Jan Kiszka | } |
563 | 55f8d6ac | Jan Kiszka | |
564 | 296af7c9 | Blue Swirl | int qemu_init_main_loop(void) |
565 | 296af7c9 | Blue Swirl | { |
566 | 296af7c9 | Blue Swirl | int ret;
|
567 | a8486bc9 | Marcelo Tosatti | sigset_t blocked_signals; |
568 | 296af7c9 | Blue Swirl | |
569 | 3c638d06 | Jan Kiszka | cpu_set_debug_excp_handler(cpu_debug_handler); |
570 | 3c638d06 | Jan Kiszka | |
571 | a8486bc9 | Marcelo Tosatti | blocked_signals = block_io_signals(); |
572 | a8486bc9 | Marcelo Tosatti | |
573 | a8486bc9 | Marcelo Tosatti | ret = qemu_signalfd_init(blocked_signals); |
574 | a8486bc9 | Marcelo Tosatti | if (ret)
|
575 | a8486bc9 | Marcelo Tosatti | return ret;
|
576 | a8486bc9 | Marcelo Tosatti | |
577 | a8486bc9 | Marcelo Tosatti | /* Note eventfd must be drained before signalfd handlers run */
|
578 | 296af7c9 | Blue Swirl | ret = qemu_event_init(); |
579 | 296af7c9 | Blue Swirl | if (ret)
|
580 | 296af7c9 | Blue Swirl | return ret;
|
581 | 296af7c9 | Blue Swirl | |
582 | 296af7c9 | Blue Swirl | qemu_cond_init(&qemu_pause_cond); |
583 | f8ca7b43 | Jan Kiszka | qemu_cond_init(&qemu_system_cond); |
584 | 296af7c9 | Blue Swirl | qemu_mutex_init(&qemu_fair_mutex); |
585 | 296af7c9 | Blue Swirl | qemu_mutex_init(&qemu_global_mutex); |
586 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
587 | 296af7c9 | Blue Swirl | |
588 | 296af7c9 | Blue Swirl | qemu_thread_self(&io_thread); |
589 | 296af7c9 | Blue Swirl | |
590 | 296af7c9 | Blue Swirl | return 0; |
591 | 296af7c9 | Blue Swirl | } |
592 | 296af7c9 | Blue Swirl | |
593 | 7277e027 | Blue Swirl | void qemu_main_loop_start(void) |
594 | 7277e027 | Blue Swirl | { |
595 | 7277e027 | Blue Swirl | qemu_system_ready = 1;
|
596 | 7277e027 | Blue Swirl | qemu_cond_broadcast(&qemu_system_cond); |
597 | 7277e027 | Blue Swirl | } |
598 | 7277e027 | Blue Swirl | |
599 | e82bcec2 | Marcelo Tosatti | void run_on_cpu(CPUState *env, void (*func)(void *data), void *data) |
600 | e82bcec2 | Marcelo Tosatti | { |
601 | e82bcec2 | Marcelo Tosatti | struct qemu_work_item wi;
|
602 | e82bcec2 | Marcelo Tosatti | |
603 | e82bcec2 | Marcelo Tosatti | if (qemu_cpu_self(env)) {
|
604 | e82bcec2 | Marcelo Tosatti | func(data); |
605 | e82bcec2 | Marcelo Tosatti | return;
|
606 | e82bcec2 | Marcelo Tosatti | } |
607 | e82bcec2 | Marcelo Tosatti | |
608 | e82bcec2 | Marcelo Tosatti | wi.func = func; |
609 | e82bcec2 | Marcelo Tosatti | wi.data = data; |
610 | e82bcec2 | Marcelo Tosatti | if (!env->queued_work_first)
|
611 | e82bcec2 | Marcelo Tosatti | env->queued_work_first = &wi; |
612 | e82bcec2 | Marcelo Tosatti | else
|
613 | e82bcec2 | Marcelo Tosatti | env->queued_work_last->next = &wi; |
614 | e82bcec2 | Marcelo Tosatti | env->queued_work_last = &wi; |
615 | e82bcec2 | Marcelo Tosatti | wi.next = NULL;
|
616 | e82bcec2 | Marcelo Tosatti | wi.done = false;
|
617 | e82bcec2 | Marcelo Tosatti | |
618 | e82bcec2 | Marcelo Tosatti | qemu_cpu_kick(env); |
619 | e82bcec2 | Marcelo Tosatti | while (!wi.done) {
|
620 | e82bcec2 | Marcelo Tosatti | CPUState *self_env = cpu_single_env; |
621 | e82bcec2 | Marcelo Tosatti | |
622 | e82bcec2 | Marcelo Tosatti | qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex); |
623 | e82bcec2 | Marcelo Tosatti | cpu_single_env = self_env; |
624 | e82bcec2 | Marcelo Tosatti | } |
625 | e82bcec2 | Marcelo Tosatti | } |
626 | e82bcec2 | Marcelo Tosatti | |
627 | e82bcec2 | Marcelo Tosatti | static void flush_queued_work(CPUState *env) |
628 | e82bcec2 | Marcelo Tosatti | { |
629 | e82bcec2 | Marcelo Tosatti | struct qemu_work_item *wi;
|
630 | e82bcec2 | Marcelo Tosatti | |
631 | e82bcec2 | Marcelo Tosatti | if (!env->queued_work_first)
|
632 | e82bcec2 | Marcelo Tosatti | return;
|
633 | e82bcec2 | Marcelo Tosatti | |
634 | e82bcec2 | Marcelo Tosatti | while ((wi = env->queued_work_first)) {
|
635 | e82bcec2 | Marcelo Tosatti | env->queued_work_first = wi->next; |
636 | e82bcec2 | Marcelo Tosatti | wi->func(wi->data); |
637 | e82bcec2 | Marcelo Tosatti | wi->done = true;
|
638 | e82bcec2 | Marcelo Tosatti | } |
639 | e82bcec2 | Marcelo Tosatti | env->queued_work_last = NULL;
|
640 | e82bcec2 | Marcelo Tosatti | qemu_cond_broadcast(&qemu_work_cond); |
641 | e82bcec2 | Marcelo Tosatti | } |
642 | e82bcec2 | Marcelo Tosatti | |
643 | 296af7c9 | Blue Swirl | static void qemu_wait_io_event_common(CPUState *env) |
644 | 296af7c9 | Blue Swirl | { |
645 | 296af7c9 | Blue Swirl | if (env->stop) {
|
646 | 296af7c9 | Blue Swirl | env->stop = 0;
|
647 | 296af7c9 | Blue Swirl | env->stopped = 1;
|
648 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_pause_cond); |
649 | 296af7c9 | Blue Swirl | } |
650 | e82bcec2 | Marcelo Tosatti | flush_queued_work(env); |
651 | aa2c364b | Jan Kiszka | env->thread_kicked = false;
|
652 | 296af7c9 | Blue Swirl | } |
653 | 296af7c9 | Blue Swirl | |
654 | 6cabe1f3 | Jan Kiszka | static void qemu_tcg_wait_io_event(void) |
655 | 296af7c9 | Blue Swirl | { |
656 | 6cabe1f3 | Jan Kiszka | CPUState *env; |
657 | 6cabe1f3 | Jan Kiszka | |
658 | 472fb0c4 | Jan Kiszka | while (!any_cpu_has_work())
|
659 | 6cabe1f3 | Jan Kiszka | qemu_cond_timedwait(tcg_halt_cond, &qemu_global_mutex, 1000);
|
660 | 296af7c9 | Blue Swirl | |
661 | 296af7c9 | Blue Swirl | qemu_mutex_unlock(&qemu_global_mutex); |
662 | 296af7c9 | Blue Swirl | |
663 | 296af7c9 | Blue Swirl | /*
|
664 | 296af7c9 | Blue Swirl | * Users of qemu_global_mutex can be starved, having no chance
|
665 | 296af7c9 | Blue Swirl | * to acquire it since this path will get to it first.
|
666 | 296af7c9 | Blue Swirl | * So use another lock to provide fairness.
|
667 | 296af7c9 | Blue Swirl | */
|
668 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_fair_mutex); |
669 | 296af7c9 | Blue Swirl | qemu_mutex_unlock(&qemu_fair_mutex); |
670 | 296af7c9 | Blue Swirl | |
671 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
672 | 6cabe1f3 | Jan Kiszka | |
673 | 6cabe1f3 | Jan Kiszka | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
674 | 6cabe1f3 | Jan Kiszka | qemu_wait_io_event_common(env); |
675 | 6cabe1f3 | Jan Kiszka | } |
676 | 296af7c9 | Blue Swirl | } |
677 | 296af7c9 | Blue Swirl | |
678 | c0532a76 | Marcelo Tosatti | static void sigbus_reraise(void) |
679 | c0532a76 | Marcelo Tosatti | { |
680 | c0532a76 | Marcelo Tosatti | sigset_t set; |
681 | c0532a76 | Marcelo Tosatti | struct sigaction action;
|
682 | c0532a76 | Marcelo Tosatti | |
683 | c0532a76 | Marcelo Tosatti | memset(&action, 0, sizeof(action)); |
684 | c0532a76 | Marcelo Tosatti | action.sa_handler = SIG_DFL; |
685 | c0532a76 | Marcelo Tosatti | if (!sigaction(SIGBUS, &action, NULL)) { |
686 | c0532a76 | Marcelo Tosatti | raise(SIGBUS); |
687 | c0532a76 | Marcelo Tosatti | sigemptyset(&set); |
688 | c0532a76 | Marcelo Tosatti | sigaddset(&set, SIGBUS); |
689 | c0532a76 | Marcelo Tosatti | sigprocmask(SIG_UNBLOCK, &set, NULL);
|
690 | c0532a76 | Marcelo Tosatti | } |
691 | c0532a76 | Marcelo Tosatti | perror("Failed to re-raise SIGBUS!\n");
|
692 | c0532a76 | Marcelo Tosatti | abort(); |
693 | c0532a76 | Marcelo Tosatti | } |
694 | c0532a76 | Marcelo Tosatti | |
695 | c0532a76 | Marcelo Tosatti | static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo, |
696 | c0532a76 | Marcelo Tosatti | void *ctx)
|
697 | c0532a76 | Marcelo Tosatti | { |
698 | a1b87fe0 | Jan Kiszka | if (kvm_on_sigbus(siginfo->ssi_code, (void *)(intptr_t)siginfo->ssi_addr)) { |
699 | c0532a76 | Marcelo Tosatti | sigbus_reraise(); |
700 | a1b87fe0 | Jan Kiszka | } |
701 | c0532a76 | Marcelo Tosatti | } |
702 | c0532a76 | Marcelo Tosatti | |
703 | 296af7c9 | Blue Swirl | static void qemu_kvm_wait_io_event(CPUState *env) |
704 | 296af7c9 | Blue Swirl | { |
705 | 296af7c9 | Blue Swirl | while (!cpu_has_work(env))
|
706 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(env->halt_cond, &qemu_global_mutex, 1000);
|
707 | 296af7c9 | Blue Swirl | |
708 | 5db5bdac | Jan Kiszka | qemu_kvm_eat_signals(env); |
709 | 296af7c9 | Blue Swirl | qemu_wait_io_event_common(env); |
710 | 296af7c9 | Blue Swirl | } |
711 | 296af7c9 | Blue Swirl | |
712 | 296af7c9 | Blue Swirl | static int qemu_cpu_exec(CPUState *env); |
713 | 296af7c9 | Blue Swirl | |
714 | 296af7c9 | Blue Swirl | static void *kvm_cpu_thread_fn(void *arg) |
715 | 296af7c9 | Blue Swirl | { |
716 | 296af7c9 | Blue Swirl | CPUState *env = arg; |
717 | 84b4915d | Jan Kiszka | int r;
|
718 | 296af7c9 | Blue Swirl | |
719 | 6164e6d6 | Marcelo Tosatti | qemu_mutex_lock(&qemu_global_mutex); |
720 | 296af7c9 | Blue Swirl | qemu_thread_self(env->thread); |
721 | d31ae052 | Jan Kiszka | |
722 | 84b4915d | Jan Kiszka | r = kvm_init_vcpu(env); |
723 | 84b4915d | Jan Kiszka | if (r < 0) { |
724 | 84b4915d | Jan Kiszka | fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r));
|
725 | 84b4915d | Jan Kiszka | exit(1);
|
726 | 84b4915d | Jan Kiszka | } |
727 | 296af7c9 | Blue Swirl | |
728 | 55f8d6ac | Jan Kiszka | qemu_kvm_init_cpu_signals(env); |
729 | 296af7c9 | Blue Swirl | |
730 | 296af7c9 | Blue Swirl | /* signal CPU creation */
|
731 | 296af7c9 | Blue Swirl | env->created = 1;
|
732 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_cpu_cond); |
733 | 296af7c9 | Blue Swirl | |
734 | 296af7c9 | Blue Swirl | /* and wait for machine initialization */
|
735 | 296af7c9 | Blue Swirl | while (!qemu_system_ready)
|
736 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_system_cond, &qemu_global_mutex, 100);
|
737 | 296af7c9 | Blue Swirl | |
738 | 296af7c9 | Blue Swirl | while (1) { |
739 | 296af7c9 | Blue Swirl | if (cpu_can_run(env))
|
740 | 296af7c9 | Blue Swirl | qemu_cpu_exec(env); |
741 | 296af7c9 | Blue Swirl | qemu_kvm_wait_io_event(env); |
742 | 296af7c9 | Blue Swirl | } |
743 | 296af7c9 | Blue Swirl | |
744 | 296af7c9 | Blue Swirl | return NULL; |
745 | 296af7c9 | Blue Swirl | } |
746 | 296af7c9 | Blue Swirl | |
747 | 296af7c9 | Blue Swirl | static void *tcg_cpu_thread_fn(void *arg) |
748 | 296af7c9 | Blue Swirl | { |
749 | 296af7c9 | Blue Swirl | CPUState *env = arg; |
750 | 296af7c9 | Blue Swirl | |
751 | 55f8d6ac | Jan Kiszka | qemu_tcg_init_cpu_signals(); |
752 | 296af7c9 | Blue Swirl | qemu_thread_self(env->thread); |
753 | 296af7c9 | Blue Swirl | |
754 | 296af7c9 | Blue Swirl | /* signal CPU creation */
|
755 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
756 | 296af7c9 | Blue Swirl | for (env = first_cpu; env != NULL; env = env->next_cpu) |
757 | 296af7c9 | Blue Swirl | env->created = 1;
|
758 | 296af7c9 | Blue Swirl | qemu_cond_signal(&qemu_cpu_cond); |
759 | 296af7c9 | Blue Swirl | |
760 | 296af7c9 | Blue Swirl | /* and wait for machine initialization */
|
761 | 296af7c9 | Blue Swirl | while (!qemu_system_ready)
|
762 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_system_cond, &qemu_global_mutex, 100);
|
763 | 296af7c9 | Blue Swirl | |
764 | 296af7c9 | Blue Swirl | while (1) { |
765 | 472fb0c4 | Jan Kiszka | cpu_exec_all(); |
766 | 6cabe1f3 | Jan Kiszka | qemu_tcg_wait_io_event(); |
767 | 296af7c9 | Blue Swirl | } |
768 | 296af7c9 | Blue Swirl | |
769 | 296af7c9 | Blue Swirl | return NULL; |
770 | 296af7c9 | Blue Swirl | } |
771 | 296af7c9 | Blue Swirl | |
772 | 296af7c9 | Blue Swirl | void qemu_cpu_kick(void *_env) |
773 | 296af7c9 | Blue Swirl | { |
774 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
775 | 296af7c9 | Blue Swirl | qemu_cond_broadcast(env->halt_cond); |
776 | aa2c364b | Jan Kiszka | if (!env->thread_kicked) {
|
777 | aa2c364b | Jan Kiszka | qemu_thread_signal(env->thread, SIG_IPI); |
778 | aa2c364b | Jan Kiszka | env->thread_kicked = true;
|
779 | aa2c364b | Jan Kiszka | } |
780 | 296af7c9 | Blue Swirl | } |
781 | 296af7c9 | Blue Swirl | |
782 | 296af7c9 | Blue Swirl | int qemu_cpu_self(void *_env) |
783 | 296af7c9 | Blue Swirl | { |
784 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
785 | 296af7c9 | Blue Swirl | QemuThread this; |
786 | 296af7c9 | Blue Swirl | |
787 | 296af7c9 | Blue Swirl | qemu_thread_self(&this); |
788 | 296af7c9 | Blue Swirl | |
789 | 296af7c9 | Blue Swirl | return qemu_thread_equal(&this, env->thread);
|
790 | 296af7c9 | Blue Swirl | } |
791 | 296af7c9 | Blue Swirl | |
792 | 296af7c9 | Blue Swirl | void qemu_mutex_lock_iothread(void) |
793 | 296af7c9 | Blue Swirl | { |
794 | 296af7c9 | Blue Swirl | if (kvm_enabled()) {
|
795 | 296af7c9 | Blue Swirl | qemu_mutex_lock(&qemu_global_mutex); |
796 | 1a28cac3 | Marcelo Tosatti | } else {
|
797 | 1a28cac3 | Marcelo Tosatti | qemu_mutex_lock(&qemu_fair_mutex); |
798 | 1a28cac3 | Marcelo Tosatti | if (qemu_mutex_trylock(&qemu_global_mutex)) {
|
799 | 1a28cac3 | Marcelo Tosatti | qemu_thread_signal(tcg_cpu_thread, SIG_IPI); |
800 | 1a28cac3 | Marcelo Tosatti | qemu_mutex_lock(&qemu_global_mutex); |
801 | 1a28cac3 | Marcelo Tosatti | } |
802 | 1a28cac3 | Marcelo Tosatti | qemu_mutex_unlock(&qemu_fair_mutex); |
803 | 1a28cac3 | Marcelo Tosatti | } |
804 | 296af7c9 | Blue Swirl | } |
805 | 296af7c9 | Blue Swirl | |
806 | 296af7c9 | Blue Swirl | void qemu_mutex_unlock_iothread(void) |
807 | 296af7c9 | Blue Swirl | { |
808 | 296af7c9 | Blue Swirl | qemu_mutex_unlock(&qemu_global_mutex); |
809 | 296af7c9 | Blue Swirl | } |
810 | 296af7c9 | Blue Swirl | |
811 | 296af7c9 | Blue Swirl | static int all_vcpus_paused(void) |
812 | 296af7c9 | Blue Swirl | { |
813 | 296af7c9 | Blue Swirl | CPUState *penv = first_cpu; |
814 | 296af7c9 | Blue Swirl | |
815 | 296af7c9 | Blue Swirl | while (penv) {
|
816 | 296af7c9 | Blue Swirl | if (!penv->stopped)
|
817 | 296af7c9 | Blue Swirl | return 0; |
818 | 296af7c9 | Blue Swirl | penv = (CPUState *)penv->next_cpu; |
819 | 296af7c9 | Blue Swirl | } |
820 | 296af7c9 | Blue Swirl | |
821 | 296af7c9 | Blue Swirl | return 1; |
822 | 296af7c9 | Blue Swirl | } |
823 | 296af7c9 | Blue Swirl | |
824 | 296af7c9 | Blue Swirl | void pause_all_vcpus(void) |
825 | 296af7c9 | Blue Swirl | { |
826 | 296af7c9 | Blue Swirl | CPUState *penv = first_cpu; |
827 | 296af7c9 | Blue Swirl | |
828 | 296af7c9 | Blue Swirl | while (penv) {
|
829 | 296af7c9 | Blue Swirl | penv->stop = 1;
|
830 | 296af7c9 | Blue Swirl | qemu_cpu_kick(penv); |
831 | 296af7c9 | Blue Swirl | penv = (CPUState *)penv->next_cpu; |
832 | 296af7c9 | Blue Swirl | } |
833 | 296af7c9 | Blue Swirl | |
834 | 296af7c9 | Blue Swirl | while (!all_vcpus_paused()) {
|
835 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_pause_cond, &qemu_global_mutex, 100);
|
836 | 296af7c9 | Blue Swirl | penv = first_cpu; |
837 | 296af7c9 | Blue Swirl | while (penv) {
|
838 | 1fbb22e5 | Marcelo Tosatti | qemu_cpu_kick(penv); |
839 | 296af7c9 | Blue Swirl | penv = (CPUState *)penv->next_cpu; |
840 | 296af7c9 | Blue Swirl | } |
841 | 296af7c9 | Blue Swirl | } |
842 | 296af7c9 | Blue Swirl | } |
843 | 296af7c9 | Blue Swirl | |
844 | 296af7c9 | Blue Swirl | void resume_all_vcpus(void) |
845 | 296af7c9 | Blue Swirl | { |
846 | 296af7c9 | Blue Swirl | CPUState *penv = first_cpu; |
847 | 296af7c9 | Blue Swirl | |
848 | 296af7c9 | Blue Swirl | while (penv) {
|
849 | 296af7c9 | Blue Swirl | penv->stop = 0;
|
850 | 296af7c9 | Blue Swirl | penv->stopped = 0;
|
851 | 296af7c9 | Blue Swirl | qemu_cpu_kick(penv); |
852 | 296af7c9 | Blue Swirl | penv = (CPUState *)penv->next_cpu; |
853 | 296af7c9 | Blue Swirl | } |
854 | 296af7c9 | Blue Swirl | } |
855 | 296af7c9 | Blue Swirl | |
856 | 296af7c9 | Blue Swirl | static void tcg_init_vcpu(void *_env) |
857 | 296af7c9 | Blue Swirl | { |
858 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
859 | 296af7c9 | Blue Swirl | /* share a single thread for all cpus with TCG */
|
860 | 296af7c9 | Blue Swirl | if (!tcg_cpu_thread) {
|
861 | 296af7c9 | Blue Swirl | env->thread = qemu_mallocz(sizeof(QemuThread));
|
862 | 296af7c9 | Blue Swirl | env->halt_cond = qemu_mallocz(sizeof(QemuCond));
|
863 | 296af7c9 | Blue Swirl | qemu_cond_init(env->halt_cond); |
864 | 296af7c9 | Blue Swirl | qemu_thread_create(env->thread, tcg_cpu_thread_fn, env); |
865 | 296af7c9 | Blue Swirl | while (env->created == 0) |
866 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
|
867 | 296af7c9 | Blue Swirl | tcg_cpu_thread = env->thread; |
868 | 296af7c9 | Blue Swirl | tcg_halt_cond = env->halt_cond; |
869 | 296af7c9 | Blue Swirl | } else {
|
870 | 296af7c9 | Blue Swirl | env->thread = tcg_cpu_thread; |
871 | 296af7c9 | Blue Swirl | env->halt_cond = tcg_halt_cond; |
872 | 296af7c9 | Blue Swirl | } |
873 | 296af7c9 | Blue Swirl | } |
874 | 296af7c9 | Blue Swirl | |
875 | 296af7c9 | Blue Swirl | static void kvm_start_vcpu(CPUState *env) |
876 | 296af7c9 | Blue Swirl | { |
877 | 296af7c9 | Blue Swirl | env->thread = qemu_mallocz(sizeof(QemuThread));
|
878 | 296af7c9 | Blue Swirl | env->halt_cond = qemu_mallocz(sizeof(QemuCond));
|
879 | 296af7c9 | Blue Swirl | qemu_cond_init(env->halt_cond); |
880 | 296af7c9 | Blue Swirl | qemu_thread_create(env->thread, kvm_cpu_thread_fn, env); |
881 | 296af7c9 | Blue Swirl | while (env->created == 0) |
882 | 296af7c9 | Blue Swirl | qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
|
883 | 296af7c9 | Blue Swirl | } |
884 | 296af7c9 | Blue Swirl | |
885 | 296af7c9 | Blue Swirl | void qemu_init_vcpu(void *_env) |
886 | 296af7c9 | Blue Swirl | { |
887 | 296af7c9 | Blue Swirl | CPUState *env = _env; |
888 | 296af7c9 | Blue Swirl | |
889 | 296af7c9 | Blue Swirl | env->nr_cores = smp_cores; |
890 | 296af7c9 | Blue Swirl | env->nr_threads = smp_threads; |
891 | 296af7c9 | Blue Swirl | if (kvm_enabled())
|
892 | 296af7c9 | Blue Swirl | kvm_start_vcpu(env); |
893 | 296af7c9 | Blue Swirl | else
|
894 | 296af7c9 | Blue Swirl | tcg_init_vcpu(env); |
895 | 296af7c9 | Blue Swirl | } |
896 | 296af7c9 | Blue Swirl | |
897 | 296af7c9 | Blue Swirl | void qemu_notify_event(void) |
898 | 296af7c9 | Blue Swirl | { |
899 | 296af7c9 | Blue Swirl | qemu_event_increment(); |
900 | 296af7c9 | Blue Swirl | } |
901 | 296af7c9 | Blue Swirl | |
902 | 296af7c9 | Blue Swirl | static void qemu_system_vmstop_request(int reason) |
903 | 296af7c9 | Blue Swirl | { |
904 | 296af7c9 | Blue Swirl | vmstop_requested = reason; |
905 | 296af7c9 | Blue Swirl | qemu_notify_event(); |
906 | 296af7c9 | Blue Swirl | } |
907 | 296af7c9 | Blue Swirl | |
908 | b4a3d965 | Jan Kiszka | void cpu_stop_current(void) |
909 | b4a3d965 | Jan Kiszka | { |
910 | b4a3d965 | Jan Kiszka | if (cpu_single_env) {
|
911 | b4a3d965 | Jan Kiszka | cpu_single_env->stopped = 1;
|
912 | b4a3d965 | Jan Kiszka | cpu_exit(cpu_single_env); |
913 | b4a3d965 | Jan Kiszka | } |
914 | b4a3d965 | Jan Kiszka | } |
915 | b4a3d965 | Jan Kiszka | |
916 | 296af7c9 | Blue Swirl | void vm_stop(int reason) |
917 | 296af7c9 | Blue Swirl | { |
918 | 296af7c9 | Blue Swirl | QemuThread me; |
919 | 296af7c9 | Blue Swirl | qemu_thread_self(&me); |
920 | 296af7c9 | Blue Swirl | |
921 | 296af7c9 | Blue Swirl | if (!qemu_thread_equal(&me, &io_thread)) {
|
922 | 296af7c9 | Blue Swirl | qemu_system_vmstop_request(reason); |
923 | 296af7c9 | Blue Swirl | /*
|
924 | 296af7c9 | Blue Swirl | * FIXME: should not return to device code in case
|
925 | 296af7c9 | Blue Swirl | * vm_stop() has been requested.
|
926 | 296af7c9 | Blue Swirl | */
|
927 | b4a3d965 | Jan Kiszka | cpu_stop_current(); |
928 | 296af7c9 | Blue Swirl | return;
|
929 | 296af7c9 | Blue Swirl | } |
930 | 296af7c9 | Blue Swirl | do_vm_stop(reason); |
931 | 296af7c9 | Blue Swirl | } |
932 | 296af7c9 | Blue Swirl | |
933 | 296af7c9 | Blue Swirl | #endif
|
934 | 296af7c9 | Blue Swirl | |
935 | 296af7c9 | Blue Swirl | static int qemu_cpu_exec(CPUState *env) |
936 | 296af7c9 | Blue Swirl | { |
937 | 296af7c9 | Blue Swirl | int ret;
|
938 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
939 | 296af7c9 | Blue Swirl | int64_t ti; |
940 | 296af7c9 | Blue Swirl | #endif
|
941 | 296af7c9 | Blue Swirl | |
942 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
943 | 296af7c9 | Blue Swirl | ti = profile_getclock(); |
944 | 296af7c9 | Blue Swirl | #endif
|
945 | 296af7c9 | Blue Swirl | if (use_icount) {
|
946 | 296af7c9 | Blue Swirl | int64_t count; |
947 | 296af7c9 | Blue Swirl | int decr;
|
948 | 296af7c9 | Blue Swirl | qemu_icount -= (env->icount_decr.u16.low + env->icount_extra); |
949 | 296af7c9 | Blue Swirl | env->icount_decr.u16.low = 0;
|
950 | 296af7c9 | Blue Swirl | env->icount_extra = 0;
|
951 | 296af7c9 | Blue Swirl | count = qemu_icount_round (qemu_next_deadline()); |
952 | 296af7c9 | Blue Swirl | qemu_icount += count; |
953 | 296af7c9 | Blue Swirl | decr = (count > 0xffff) ? 0xffff : count; |
954 | 296af7c9 | Blue Swirl | count -= decr; |
955 | 296af7c9 | Blue Swirl | env->icount_decr.u16.low = decr; |
956 | 296af7c9 | Blue Swirl | env->icount_extra = count; |
957 | 296af7c9 | Blue Swirl | } |
958 | 296af7c9 | Blue Swirl | ret = cpu_exec(env); |
959 | 296af7c9 | Blue Swirl | #ifdef CONFIG_PROFILER
|
960 | 296af7c9 | Blue Swirl | qemu_time += profile_getclock() - ti; |
961 | 296af7c9 | Blue Swirl | #endif
|
962 | 296af7c9 | Blue Swirl | if (use_icount) {
|
963 | 296af7c9 | Blue Swirl | /* Fold pending instructions back into the
|
964 | 296af7c9 | Blue Swirl | instruction counter, and clear the interrupt flag. */
|
965 | 296af7c9 | Blue Swirl | qemu_icount -= (env->icount_decr.u16.low |
966 | 296af7c9 | Blue Swirl | + env->icount_extra); |
967 | 296af7c9 | Blue Swirl | env->icount_decr.u32 = 0;
|
968 | 296af7c9 | Blue Swirl | env->icount_extra = 0;
|
969 | 296af7c9 | Blue Swirl | } |
970 | 296af7c9 | Blue Swirl | return ret;
|
971 | 296af7c9 | Blue Swirl | } |
972 | 296af7c9 | Blue Swirl | |
973 | 472fb0c4 | Jan Kiszka | bool cpu_exec_all(void) |
974 | 296af7c9 | Blue Swirl | { |
975 | 9a36085b | Jan Kiszka | int r;
|
976 | 9a36085b | Jan Kiszka | |
977 | 296af7c9 | Blue Swirl | if (next_cpu == NULL) |
978 | 296af7c9 | Blue Swirl | next_cpu = first_cpu; |
979 | c629a4bc | Jan Kiszka | for (; next_cpu != NULL && !exit_request; next_cpu = next_cpu->next_cpu) { |
980 | 345f4426 | Jan Kiszka | CPUState *env = next_cpu; |
981 | 296af7c9 | Blue Swirl | |
982 | 296af7c9 | Blue Swirl | qemu_clock_enable(vm_clock, |
983 | 345f4426 | Jan Kiszka | (env->singlestep_enabled & SSTEP_NOTIMER) == 0);
|
984 | 296af7c9 | Blue Swirl | |
985 | 296af7c9 | Blue Swirl | if (qemu_alarm_pending())
|
986 | 296af7c9 | Blue Swirl | break;
|
987 | 3c638d06 | Jan Kiszka | if (cpu_can_run(env)) {
|
988 | 9a36085b | Jan Kiszka | r = qemu_cpu_exec(env); |
989 | 9a36085b | Jan Kiszka | if (kvm_enabled()) {
|
990 | 9a36085b | Jan Kiszka | qemu_kvm_eat_signals(env); |
991 | 9a36085b | Jan Kiszka | } |
992 | 9a36085b | Jan Kiszka | if (r == EXCP_DEBUG) {
|
993 | 3c638d06 | Jan Kiszka | break;
|
994 | 3c638d06 | Jan Kiszka | } |
995 | 3c638d06 | Jan Kiszka | } else if (env->stop) { |
996 | 296af7c9 | Blue Swirl | break;
|
997 | 296af7c9 | Blue Swirl | } |
998 | 296af7c9 | Blue Swirl | } |
999 | c629a4bc | Jan Kiszka | exit_request = 0;
|
1000 | 472fb0c4 | Jan Kiszka | return any_cpu_has_work();
|
1001 | 296af7c9 | Blue Swirl | } |
1002 | 296af7c9 | Blue Swirl | |
1003 | 296af7c9 | Blue Swirl | void set_numa_modes(void) |
1004 | 296af7c9 | Blue Swirl | { |
1005 | 296af7c9 | Blue Swirl | CPUState *env; |
1006 | 296af7c9 | Blue Swirl | int i;
|
1007 | 296af7c9 | Blue Swirl | |
1008 | 296af7c9 | Blue Swirl | for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1009 | 296af7c9 | Blue Swirl | for (i = 0; i < nb_numa_nodes; i++) { |
1010 | 296af7c9 | Blue Swirl | if (node_cpumask[i] & (1 << env->cpu_index)) { |
1011 | 296af7c9 | Blue Swirl | env->numa_node = i; |
1012 | 296af7c9 | Blue Swirl | } |
1013 | 296af7c9 | Blue Swirl | } |
1014 | 296af7c9 | Blue Swirl | } |
1015 | 296af7c9 | Blue Swirl | } |
1016 | 296af7c9 | Blue Swirl | |
1017 | 296af7c9 | Blue Swirl | void set_cpu_log(const char *optarg) |
1018 | 296af7c9 | Blue Swirl | { |
1019 | 296af7c9 | Blue Swirl | int mask;
|
1020 | 296af7c9 | Blue Swirl | const CPULogItem *item;
|
1021 | 296af7c9 | Blue Swirl | |
1022 | 296af7c9 | Blue Swirl | mask = cpu_str_to_log_mask(optarg); |
1023 | 296af7c9 | Blue Swirl | if (!mask) {
|
1024 | 296af7c9 | Blue Swirl | printf("Log items (comma separated):\n");
|
1025 | 296af7c9 | Blue Swirl | for (item = cpu_log_items; item->mask != 0; item++) { |
1026 | 296af7c9 | Blue Swirl | printf("%-10s %s\n", item->name, item->help);
|
1027 | 296af7c9 | Blue Swirl | } |
1028 | 296af7c9 | Blue Swirl | exit(1);
|
1029 | 296af7c9 | Blue Swirl | } |
1030 | 296af7c9 | Blue Swirl | cpu_set_log(mask); |
1031 | 296af7c9 | Blue Swirl | } |
1032 | 29e922b6 | Blue Swirl | |
1033 | 29e922b6 | Blue Swirl | /* Return the virtual CPU time, based on the instruction counter. */
|
1034 | 29e922b6 | Blue Swirl | int64_t cpu_get_icount(void)
|
1035 | 29e922b6 | Blue Swirl | { |
1036 | 29e922b6 | Blue Swirl | int64_t icount; |
1037 | 29e922b6 | Blue Swirl | CPUState *env = cpu_single_env;; |
1038 | 29e922b6 | Blue Swirl | |
1039 | 29e922b6 | Blue Swirl | icount = qemu_icount; |
1040 | 29e922b6 | Blue Swirl | if (env) {
|
1041 | 29e922b6 | Blue Swirl | if (!can_do_io(env)) {
|
1042 | 29e922b6 | Blue Swirl | fprintf(stderr, "Bad clock read\n");
|
1043 | 29e922b6 | Blue Swirl | } |
1044 | 29e922b6 | Blue Swirl | icount -= (env->icount_decr.u16.low + env->icount_extra); |
1045 | 29e922b6 | Blue Swirl | } |
1046 | 29e922b6 | Blue Swirl | return qemu_icount_bias + (icount << icount_time_shift);
|
1047 | 29e922b6 | Blue Swirl | } |
1048 | 262353cb | Blue Swirl | |
1049 | 9a78eead | Stefan Weil | void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg) |
1050 | 262353cb | Blue Swirl | { |
1051 | 262353cb | Blue Swirl | /* XXX: implement xxx_cpu_list for targets that still miss it */
|
1052 | 262353cb | Blue Swirl | #if defined(cpu_list_id)
|
1053 | 262353cb | Blue Swirl | cpu_list_id(f, cpu_fprintf, optarg); |
1054 | 262353cb | Blue Swirl | #elif defined(cpu_list)
|
1055 | 262353cb | Blue Swirl | cpu_list(f, cpu_fprintf); /* deprecated */
|
1056 | 262353cb | Blue Swirl | #endif
|
1057 | 262353cb | Blue Swirl | } |