From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH v2] arch: use WRITE_ONCE/READ_ONCE in
 smp_store_release/smp_load_acquire
Date: Sun, 2 Aug 2015 18:08:09 +0200
Message-ID: <20150802160809.GF25159@twins.programming.kicks-ass.net>
References: <1438528264-714-1-git-send-email-andreyknvl@google.com>
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To: Andrey Konovalov <andreyknvl@google.com>
Cc: Russell King <linux@arm.linux.org.uk>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com>, Tony Luck <tony.luck@intel.com>, Fenghua Yu <fenghua.yu@intel.com>, James Hogan <james.hogan@imgtec.com>, Ralf Baechle <ralf@linux-mips.org>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Heiko Carstens <heiko.carstens@de.ibm.com>, linux390@de.ibm.com, "David S. Miller" <davem@davemloft.net>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>, x86@kernel.org, Arnd Bergmann <arnd@arndb.de>, Alexander Duyck <alexander.h.duyck@redhat.com>, Andre Przywara <andre.przywara@arm.com>, "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>, Borislav Petkov <bp@suse.de>, linux-arm-kernel@list

On Sun, Aug 02, 2015 at 05:11:04PM +0200, Andrey Konovalov wrote:
> Replace ACCESS_ONCE() macro in smp_store_release() and smp_load_acquire()
> with WRITE_ONCE() and READ_ONCE() on x86, arm, arm64, ia64, metag, mips,
> powerpc, s390, sparc and asm-generic 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)").
> 
> Signed-off-by: Andrey Konovalov <andreyknvl@google.com>

Thanks!