From: "H. Peter Anvin" <hpa@zytor.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: Jim Kukunas <james.t.kukunas@linux.intel.com>,
Linux Raid <linux-raid@vger.kernel.org>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Neil Brown <neilb@suse.de>
Subject: Re: [PATCH] lib/raid6: Add AVX2 optimized recovery functions
Date: Thu, 29 Nov 2012 14:27:18 -0800 [thread overview]
Message-ID: <50B7E146.4060907@zytor.com> (raw)
In-Reply-To: <20121129211828.GZ16230@one.firstfloor.org>
On 11/29/2012 01:18 PM, Andi Kleen wrote:
>
> Can you quote it from the manual? As I understand volatile as usual
> is not clearly defined.
>
> gcc has a lot of optimization passes and volatile bugs are common.
>
I talked it over with H.J. and we walked through the code. The
documentation is lacking, of course, as is common with gcc.
However, that piece was pretty clear.
-hpa
next prev parent reply other threads:[~2012-11-29 22:28 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-08 21:47 [PATCH] lib/raid6: Add AVX2 optimized recovery functions Jim Kukunas
2012-11-09 11:35 ` Paul Menzel
2012-11-09 11:39 ` H. Peter Anvin
2012-11-09 11:46 ` Paul Menzel
2012-11-09 11:50 ` NeilBrown
2012-11-09 12:24 ` H. Peter Anvin
2012-11-09 19:56 ` Jim Kukunas
2012-11-19 0:57 ` NeilBrown
2012-11-29 20:09 ` Andi Kleen
2012-11-29 21:13 ` H. Peter Anvin
2012-11-29 21:18 ` Andi Kleen
2012-11-29 22:27 ` H. Peter Anvin [this message]
2012-11-29 22:28 ` H. Peter Anvin
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