diff options
| author | Sergey Fedorov <serge.fdrv@gmail.com> | 2016-04-22 19:08:48 +0300 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2016-05-12 14:06:41 -1000 |
| commit | ed3d51ecd7fe248d3959e469d53890ac9ffe0cd2 (patch) | |
| tree | 2bb706344e30ab4fddf8a7c2ade4424f9afa1070 /include | |
| parent | 0d07abf05e98903c7faf204a9a90f7d45b7554dc (diff) | |
| download | qemu-ed3d51ecd7fe248d3959e469d53890ac9ffe0cd2.zip | |
tcg/s390: Make direct jump patching thread-safe
Ensure direct jump patching in s390 is atomic by:
* naturally aligning a location of direct jump address;
* using atomic_read()/atomic_set() for code patching.
Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org>
Message-Id: <1461341333-19646-7-git-send-email-sergey.fedorov@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/exec/exec-all.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h index 0ab7803259..6c095e8636 100644 --- a/include/exec/exec-all.h +++ b/include/exec/exec-all.h @@ -321,7 +321,7 @@ static inline void tb_set_jmp_target1(uintptr_t jmp_addr, uintptr_t addr) { /* patch the branch destination */ intptr_t disp = addr - (jmp_addr - 2); - stl_be_p((void*)jmp_addr, disp / 2); + atomic_set((int32_t *)jmp_addr, disp / 2); /* no need to flush icache explicitly */ } #elif defined(__aarch64__) |