diff options
| author | Benjamin Walsh <benjamin.walsh@windriver.com> | 2016-12-02 12:18:39 -0500 |
|---|---|---|
| committer | Kumar Gala <kumar.gala@linaro.org> | 2016-12-02 18:07:29 +0000 |
| commit | c9235e2833fbe106a082766a3df1180e4c1bbbd5 (patch) | |
| tree | 061d82e4739e4ea1ac6448af162167717f592585 | |
| parent | d97299c9fa04c1e0c8ecb3135a1823e341e09e57 (diff) | |
x86: fix irq_lock/unlock ordering bug
Memory accesses could be reordered before an irq_lock() or after an
irq_unlock() without the memory barriers.
See commit 15bc537712abaeb5dfbb27ced924fe6ccc1f611c for the ARM fix for
a complete description of the issue and fix.
Change-Id: Ic92a6b33f62a938d2252d68eccc55a5fb07c9114
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
(cherry picked from commit 1f8125a41683eb96aca9414616b6eaec7f05e6ac)
| -rw-r--r-- | include/arch/x86/asm_inline_gcc.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/arch/x86/asm_inline_gcc.h b/include/arch/x86/asm_inline_gcc.h index f84ed21d7..97880c537 100644 --- a/include/arch/x86/asm_inline_gcc.h +++ b/include/arch/x86/asm_inline_gcc.h @@ -82,7 +82,7 @@ static ALWAYS_INLINE void _do_irq_unlock(void) { __asm__ volatile ( "sti;\n\t" - : : + : : : "memory" ); } |