Re: [PATCH] x86: use WRITE_ONCE/READ_ONCE in smp_store_release/smp_load_acquire

From: Peter Zijlstra
Date: Sat Aug 01 2015 - 13:18:20 EST


On Sat, Aug 01, 2015 at 06:45:34PM +0200, Andrey Konovalov wrote:
> Replace ACCESS_ONCE() macro in smp_store_release() and smp_load_acquire()
> from arch/x86/include/asm/barrier.h with WRITE_ONCE() and READ_ONCE() since
> ACCESS_ONCE does not work reliably on non-scalar types.
>
> WRITE_ONCE() and READ_ONCE() were introduced in the commits 230fa253df63
> ("kernel: Provide READ_ONCE and ASSIGN_ONCE") and 43239cbe79fc ("kernel:
> Change ASSIGN_ONCE(val, x) to WRITE_ONCE(x, val)").

Please do all relevant archs.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/