vl: take iothread lock very early

If the iothread lock isn't taken by the main thread, the RCU callbacks
might run concurrently with the main thread.  QEMU's not ready for that.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Tested-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Paolo Bonzini 2015-03-03 11:36:09 +01:00 committed by Peter Maydell
parent 3180aadb1f
commit 576a94d8bc
1 changed files with 3 additions and 3 deletions

6
vl.c
View File

@ -2767,6 +2767,9 @@ int main(int argc, char **argv, char **envp)
FILE *vmstate_dump_file = NULL;
Error *main_loop_err = NULL;
qemu_init_cpu_loop();
qemu_mutex_lock_iothread();
atexit(qemu_run_exit_notifiers);
error_set_progname(argv[0]);
qemu_init_exec_dir(argv[0]);
@ -4102,9 +4105,6 @@ int main(int argc, char **argv, char **envp)
os_set_line_buffering();
qemu_init_cpu_loop();
qemu_mutex_lock_iothread();
#ifdef CONFIG_SPICE
/* spice needs the timers to be initialized by this point */
qemu_spice_init();