From: Peter Zijlstra <peterz@infradead.org>
To: Andrey Konovalov <andreyknvl@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, "David S. Miller" <davem@davemloft.net>,
Alexander Duyck <alexander.h.duyck@redhat.com>,
Borislav Petkov <bp@suse.de>,
linux-kernel@vger.kernel.org, Dmitry Vyukov <dvyukov@google.com>
Subject: Re: [PATCH] x86: use WRITE_ONCE/READ_ONCE in smp_store_release/smp_load_acquire
Date: Sat, 1 Aug 2015 19:18:20 +0200 [thread overview]
Message-ID: <20150801171820.GP2859@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <1438447534-14517-1-git-send-email-andreyknvl@google.com>
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.
prev parent reply other threads:[~2015-08-01 17:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-01 16:45 Andrey Konovalov
2015-08-01 16:55 ` Borislav Petkov
2015-08-01 17:18 ` Peter Zijlstra [this message]
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