From: Sergey Fedorov <serge.f...@gmail.com> Ensure direct jump patching in MIPS is atomic by using atomic_read()/atomic_set() for code patching.
Signed-off-by: Sergey Fedorov <serge.f...@gmail.com> Signed-off-by: Sergey Fedorov <sergey.fedo...@linaro.org> --- Changes in v2: * s/atomic_write/atomic_set/ tcg/mips/tcg-target.inc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tcg/mips/tcg-target.inc.c b/tcg/mips/tcg-target.inc.c index 682e19897db0..cefc0398018a 100644 --- a/tcg/mips/tcg-target.inc.c +++ b/tcg/mips/tcg-target.inc.c @@ -1886,6 +1886,7 @@ static void tcg_target_init(TCGContext *s) void tb_set_jmp_target1(uintptr_t jmp_addr, uintptr_t addr) { uint32_t *ptr = (uint32_t *)jmp_addr; - *ptr = deposit32(*ptr, 0, 26, addr >> 2); + uint32_t insn = atomic_read(ptr); + atomic_set(ptr, deposit32(insn, 0, 26, addr >> 2)); flush_icache_range(jmp_addr, jmp_addr + 4); } -- 2.8.1