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vl: take iothread lock very early

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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
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6
vl.c
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@ -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();