qemu/util
Paolo Bonzini a59629fcc6 rcu: do not create thread in pthread_atfork callback
If QEMU forks after the CPU threads have been created, qemu_mutex_lock_iothread
will not be able to do qemu_cpu_kick_thread.  There is no solution other than
assuming that forks after the CPU threads have been created will end up in an
exec.  Forks before the CPU threads have been created (such as -daemonize)
have to call rcu_after_fork manually.

Notably, the oxygen theme for GTK+ forks and shows a "No such process" error
without this patch.

This patch can be reverted once the iothread loses the "kick the TCG thread"
magic.

User-mode emulation does not use the iothread, so it can also call
rcu_after_fork.

Reported by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Tested by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-04-01 10:06:38 +02:00
..
acl.c acl: fix memory leak 2014-11-17 11:48:56 +01:00
aes.c aes: remove a dead return statement 2015-02-10 09:27:20 +03:00
bitmap.c
bitops.c
compatfd.c
crc32c.c
cutils.c cutils: refine strtol error handling in parse_debug_env 2015-03-10 08:15:33 +03:00
envlist.c utils: drop strtok_r from envlist_parse 2015-02-16 16:20:02 -06:00
error.c error: Use error_report_err() where appropriate 2015-02-18 10:51:09 +01:00
event_notifier-posix.c
event_notifier-win32.c
fifo8.c
getauxval.c util: Move general qemu_getauxval to util/getauxval.c 2014-09-09 13:13:05 +02:00
hbitmap.c util: Use g_new() & friends where that makes obvious sense 2014-12-10 11:34:15 +03:00
hexdump.c
host-utils.c util: Don't link host-utils.o if it's empty 2014-09-09 13:13:05 +02:00
id.c util: Emancipate id_wellformed() from QemuOpts 2014-10-03 10:30:33 +01:00
iov.c util: Use g_new() & friends where that makes obvious sense 2014-12-10 11:34:15 +03:00
Makefile.objs rcu: add rcu library 2015-02-02 16:55:10 +01:00
module.c module: Don't complain when a module is absent 2014-07-18 14:57:35 +02:00
notify.c
osdep.c
oslib-posix.c oslib-posix: Fix compiler warning (-Wclobbered) and simplify the code 2015-03-10 08:15:34 +03:00
oslib-win32.c memory: expose alignment used for allocating RAM as MemoryRegion API 2014-11-23 12:11:30 +02:00
path.c util/path: Use the GLib memory allocation routines 2014-08-24 13:16:32 +04:00
qemu-config.c QemuOpts: Drop qemu_opt_set(), rename qemu_opt_set_err(), fix use 2015-02-26 14:49:31 +01:00
qemu-error.c qemu-error: Add error_vreport() 2014-10-09 15:36:15 +02:00
qemu-openpty.c
qemu-option.c qemu-img: Suppress unhelpful extra errors in convert, amend 2015-02-26 14:51:21 +01:00
qemu-progress.c
qemu-sockets.c qemu-sockets: Simplify setting numeric and boolean options 2015-02-26 14:51:53 +01:00
qemu-thread-posix.c qemu-thread: do not use PTHREAD_MUTEX_ERRORCHECK 2015-03-10 10:49:25 +01:00
qemu-thread-win32.c qemu-thread: add per-thread atexit functions 2015-01-13 13:43:29 +00:00
qemu-timer-common.c
rcu.c rcu: do not create thread in pthread_atfork callback 2015-04-01 10:06:38 +02:00
readline.c
rfifolock.c
throttle.c
unicode.c
uri.c util/uri: Add overflow check to rfc3986_parse_port 2015-03-18 12:05:31 +01:00