From: Magnus Damm <magnus.damm@gmail.com>
To: linux-sh@vger.kernel.org
Subject: Re: [PATCH 04/04] sh: prefetch early exception data on sh3/sh4/sh4a
Date: Fri, 27 Feb 2009 07:53:00 +0000 [thread overview]
Message-ID: <aec7e5c30902262353n5d0f85aap37c3402c3121de25@mail.gmail.com> (raw)
In-Reply-To: <20090223071931.12300.72669.sendpatchset@rx1.opensource.se>
On Fri, Feb 27, 2009 at 4:22 PM, Paul Mundt <lethal@linux-sh.org> wrote:
> On Mon, Feb 23, 2009 at 04:19:31PM +0900, Magnus Damm wrote:
>> From: Magnus Damm <damm@igel.co.jp>
>>
>> Prefetch early exception data. There is unused space in our
>> exception handler cache line anyway, so this is almost free.
>>
> Hmm, this won't work, 'pref' doesn't exist on SH-3. The binutils opcode
> table defines it as arch_sh2a_nofpu_or_sh4_nommu_nofpu_up, which excludes
> SH-3. mova is ok, though.
>
> This does show how often SH-3 gets tested though, as asm/processor_32.h
> happily defines prefetch() for SH-3 when it shouldn't. I'll tidy this up
> and drop in a PREF() macro.
Right, I do recall building for hp6xx at some point. Thanks for fixing it up.
/ magnus
next prev parent reply other threads:[~2009-02-27 7:53 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-23 7:19 [PATCH 04/04] sh: prefetch early exception data on sh3/sh4/sh4a Magnus Damm
2009-02-27 7:22 ` Paul Mundt
2009-02-27 7:53 ` Magnus Damm [this message]
2009-03-02 2:30 ` Paul Mundt
2009-03-02 2:47 ` Paul Mundt
2009-03-02 2:48 ` Magnus Damm
2009-03-02 2:55 ` Magnus Damm
2009-03-16 12:00 ` Kristoffer Ericson
2009-03-16 12:50 ` Paul Mundt
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