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[Qemu-devel] [PULL 10/39] tcg/sparc: Make direct jump patching thread-sa
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PULL 10/39] tcg/sparc: Make direct jump patching thread-safe |
Date: |
Thu, 12 May 2016 14:13:11 -1000 |
From: Sergey Fedorov <address@hidden>
Ensure direct jump patching in SPARC is atomic by using
atomic_read()/atomic_set() for code patching.
Signed-off-by: Sergey Fedorov <address@hidden>
Signed-off-by: Sergey Fedorov <address@hidden>
Reviewed-by: Alex Bennée <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
tcg/sparc/tcg-target.inc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tcg/sparc/tcg-target.inc.c b/tcg/sparc/tcg-target.inc.c
index d641cfd..c6479e2 100644
--- a/tcg/sparc/tcg-target.inc.c
+++ b/tcg/sparc/tcg-target.inc.c
@@ -1647,6 +1647,6 @@ void tb_set_jmp_target1(uintptr_t jmp_addr, uintptr_t
addr)
the code_gen_buffer can't be larger than 2GB. */
tcg_debug_assert(disp == (int32_t)disp);
- *ptr = CALL | (uint32_t)disp >> 2;
+ atomic_set(ptr, deposit32(CALL, 0, 30, disp >> 2));
flush_icache_range(jmp_addr, jmp_addr + 4);
}
--
2.5.5
- [Qemu-devel] [PULL 00/39] tcg-next patch queue, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 02/39] include/qemu/osdep.h: Add a macro to check for alignment, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 03/39] include/qemu/osdep.h: Add macros for pointer alignment, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 01/39] tb: consistently use uint32_t for tb->flags, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 04/39] tci: Make direct jump patching thread-safe, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 06/39] tcg/i386: Make direct jump patching thread-safe, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 08/39] tcg/arm: Make direct jump patching thread-safe, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 10/39] tcg/sparc: Make direct jump patching thread-safe,
Richard Henderson <=
- [Qemu-devel] [PULL 05/39] tcg/ppc: Make direct jump patching thread-safe, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 07/39] tcg/s390: Make direct jump patching thread-safe, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 09/39] tcg/aarch64: Make direct jump patching thread-safe, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 11/39] tcg/mips: Make direct jump patching thread-safe, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 12/39] tcg: Note requirement on atomic direct jump patching, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 13/39] translate-all: remove redundant setting of tcg_ctx.code_gen_buffer_size, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 15/39] translate-all: Adjust 256mb testing for mips64, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 14/39] translate-all: add missing munmap of the code_gen guard page for MIPS, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 16/39] tcg: Clean up direct block chaining data fields, Richard Henderson, 2016/05/12
- [Qemu-devel] [PULL 17/39] tcg: Use uintptr_t type for jmp_list_{next|first} fields of TB, Richard Henderson, 2016/05/12