From 84f79fb7c6e857edc807e4a251338243ce0cbac3 Mon Sep 17 00:00:00 2001 From: Sergey Fedorov Date: Fri, 22 Apr 2016 19:08:51 +0300 Subject: [PATCH] tcg/sparc: Make direct jump patching thread-safe MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Ensure direct jump patching in SPARC is atomic by using atomic_read()/atomic_set() for code patching. Signed-off-by: Sergey Fedorov Signed-off-by: Sergey Fedorov Reviewed-by: Alex Bennée Message-Id: <1461341333-19646-10-git-send-email-sergey.fedorov@linaro.org> Signed-off-by: Richard Henderson --- 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 d641cfd8c5..c6479e2507 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); } -- GitLab