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[v2,11/11] tcg: Note requirement on atomic direct jump patching

Message ID 1461341333-19646-12-git-send-email-sergey.fedorov@linaro.org
State New
Headers show

Commit Message

sergey.fedorov@linaro.org April 22, 2016, 4:08 p.m. UTC 
From: Sergey Fedorov <serge.fdrv@gmail.com>

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>
---

Changes in v2:
 * Minor rewording

 include/exec/exec-all.h | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index 6a054ee720a8..67adcf137f8b 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -229,6 +229,7 @@  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