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| author | Chen Gang S <gang.chen@sunrus.com.cn> | 2015-01-25 19:03:29 +0800 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2015-03-22 15:16:55 +0200 |
| commit | 92bed463d12ab9e1e34cdd44673ab9c4315ad1d2 (patch) | |
| tree | 8272e1c19d73fa15e422217a0e1a841a75ded70a /linux-user/main.c | |
| parent | 3c6c9fe034c0c07b77f272e4a53d7735220a16a4 (diff) | |
| download | qemu-92bed463d12ab9e1e34cdd44673ab9c4315ad1d2.zip qemu-92bed463d12ab9e1e34cdd44673ab9c4315ad1d2.tar.gz qemu-92bed463d12ab9e1e34cdd44673ab9c4315ad1d2.tar.bz2 | |
linux-user/main.c: Remove redundant end_exclusive() in arm_kernel_cmpxchg64_helper()
start/end_exclusive() need be pairs, except the start_exclusive() in
stop_all_tasks() which is only used by force_sig(), which will be abort.
So at present, start_exclusive() in stop_all_task() need not be paired.
queue_signal() may call force_sig(), or return after kill pid (or queue
signal). If could return from queue_signal(), stop_all_task() would not
be called in time, the next end_exclusive() would be issue.
So in arm_kernel_cmpxchg64_helper() for ARM, need remove end_exclusive()
after queue_signal(). The related commit: "97cc756 linux-user: Implement
new ARM 64 bit cmpxchg kernel helper".
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user/main.c')
| -rw-r--r-- | linux-user/main.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/linux-user/main.c b/linux-user/main.c index 6e446de..31eb60f 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -525,8 +525,6 @@ segv: info.si_code = TARGET_SEGV_MAPERR; info._sifields._sigfault._addr = env->exception.vaddress; queue_signal(env, info.si_signo, &info); - - end_exclusive(); } /* Handle a jump to the kernel code page. */ |