From: Rene Rebe <rene@rocklinux-consulting.de>
To: hch@lst.de
Cc: akpm@osdl.org, willy@w.ods.org, linux-kernel@vger.kernel.org
Subject: Re: i486 emu in mainline?
Date: Sun, 23 May 2004 02:20:31 +0200 (CEST) [thread overview]
Message-ID: <20040523.022031.291474063.rene@rocklinux-consulting.de> (raw)
In-Reply-To: <20040522234059.GA3735@infradead.org>
Hi,
On: Sun, 23 May 2004 01:40:59 +0200,
Christoph Hellwig <hch@lst.de> wrote:
> These days gcc uses i486+ only instruction by default in libstdc++ so
> most modern distros wouldn't work on i386 cpus anymore. To make it work
> again Debian merged Willy Tarreau's patch to trap those and emulate them
> on real i386 cpus. The patch is extremely non-invasive and would
> certainly be usefull for mainline. Any reason not to include it?
Oh cool! Given the fact with libstdc++ and sparc32 kernel also always
contain code to emulatre the mul/div instructions missing in the v7
hardware (just foudn this SIGILL trap by accident recently ..) the
comment might be a bit too strict. Maybe something like written in the
MATH_EMULATION config:
"If you are not sure, say Y; apart from resulting in a 66 KB bigger
kernel, it won't hurt."
Sincerely yours,
René Rebe
- ROCK Linux stable release maintainer
--
René Rebe - Europe/Germany/Berlin
rene@rocklinux.org rene@rocklinux-consulting.de
http://www.rocklinux.org http://www.rocklinux-consulting.de
next prev parent reply other threads:[~2004-05-23 0:20 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-22 23:40 Christoph Hellwig
2004-05-23 0:20 ` Rene Rebe [this message]
2004-05-23 7:13 ` Arjan van de Ven
2004-05-23 8:44 ` Willy Tarreau
2004-05-23 9:13 ` Arjan van de Ven
2004-05-23 9:48 ` Willy Tarreau
2004-05-23 9:58 ` Arjan van de Ven
2004-05-23 11:49 ` Helge Hafting
2004-05-23 9:20 ` Andrew Morton
2004-05-23 17:11 ` Brian Gerst
2004-05-24 2:47 ` Herbert Xu
2004-05-27 21:03 ` Pavel Machek
2004-05-23 8:29 ` Willy Tarreau
2004-05-23 11:08 ` Alan Cox
2004-05-23 11:57 ` Willy Tarreau
2004-05-23 13:15 ` Alan Cox
2004-05-24 15:17 ` Jan-Benedict Glaw
2004-05-24 17:41 ` Alan Cox
2004-05-25 9:36 ` Jan-Benedict Glaw
2004-05-25 13:48 ` Alan Cox
[not found] ` <20040523105130.GA588@samarkand.rivenstone.net>
2004-05-23 11:59 ` Willy Tarreau
2004-05-24 9:08 ` P
2004-05-23 15:18 ` Jeff Garzik
2004-05-23 21:14 ` Alan Cox
2004-05-24 12:28 ` Maciej W. Rozycki
2004-05-25 17:21 ` Kronos
2004-05-25 17:03 Albert Cahalan
2004-05-25 22:43 ` Alan Cox
2004-10-10 20:33 Nathanael Nerode
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