From: Ralf Baechle <ralf@linux-mips.org>
To: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: linux-mips@linux-mips.org
Subject: Re: sdc1 $f0 in r4k_switch.S
Date: Tue, 19 Oct 2004 19:36:44 +0200 [thread overview]
Message-ID: <20041019173644.GA21132@linux-mips.org> (raw)
In-Reply-To: <20041007.130538.71082967.nemoto@toshiba-tops.co.jp>
On Thu, Oct 07, 2004 at 01:05:38PM +0900, Atsushi Nemoto wrote:
> I found a bug in resume() in 2.6 kernel. $f0 register may not be
> saved on context switch in 64bit kernel. Here is a quick fix.
But we compensate for not storing $f0 by restoring it twice ;-)
> Or moving "sdc1 $f0" to fpu_save_16even might be better fix.
And while we're at it eleminating the special handling for
CONFIG_MIPS32 / CONFIG_MIPS64.
Ralf
prev parent reply other threads:[~2004-10-19 17:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-07 4:05 sdc1 $f0 in r4k_switch.S Atsushi Nemoto
2004-10-19 17:36 ` Ralf Baechle [this message]
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