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authorSergey Fedorov <serge.fdrv@gmail.com>2016-04-22 19:08:53 +0300
committerRichard Henderson <rth@twiddle.net>2016-05-12 14:06:41 -1000
commit10b4f4855537dd421e193a7d0416513116370558 (patch)
treedee4279ce497969216e788619d0f0b5dfea8336c /include/exec/exec-all.h
parentc82460a560176ef69c2f0662bd280612e274db96 (diff)
downloadqemu-10b4f4855537dd421e193a7d0416513116370558.zip
tcg: Note requirement on atomic direct jump patching
Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com> Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <1461341333-19646-12-git-send-email-sergey.fedorov@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'include/exec/exec-all.h')
-rw-r--r--include/exec/exec-all.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index 30cdd699f4..6c113a3d20 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -230,6 +230,7 @@ static inline void tlb_flush_by_mmuidx(CPUState *cpu, ...)
|| defined(__sparc__) || defined(__aarch64__) \
|| defined(__s390x__) || defined(__mips__) \
|| defined(CONFIG_TCG_INTERPRETER)
+/* NOTE: Direct jump patching must be atomic to be thread-safe. */
#define USE_DIRECT_JUMP
#endif