From: Ralf Baechle <ralf@linux-mips.org>
To: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: linux-mips@linux-mips.org
Subject: Re: [MIPS] Enable support for the userlocal hardware register
Date: Fri, 13 Jul 2007 18:59:15 +0100 [thread overview]
Message-ID: <20070713175915.GA30076@linux-mips.org> (raw)
In-Reply-To: <20070713.003727.08076834.anemo@mba.ocn.ne.jp>
On Fri, Jul 13, 2007 at 12:37:27AM +0900, Atsushi Nemoto wrote:
> On Mon, 09 Jul 2007 15:08:15 +0100, linux-mips@linux-mips.org wrote:
> > Which will cut down the cost of RDHWR $29 which is used to obtain the
> > TLS pointer and so far being emulated in software down to a single cycle
> > operation.
>
> Since cpu_has_userlocal is used in a critical path (switch_to),
> overriding in each cpu-feature-overrides.h might be expected.
Every sper^Wcycle is holy, as Monthy Python would say.
Ralf
prev parent reply other threads:[~2007-07-16 8:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <S20023433AbXGIOIU/20070709140820Z+13176@ftp.linux-mips.org>
2007-07-12 15:37 ` [MIPS] Enable support for the userlocal hardware register Atsushi Nemoto
2007-07-13 17:59 ` Ralf Baechle [this message]
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