From: Florian Lohoff <flo@rfc822.org>
To: Jun Sun <jsun@mvista.com>
Cc: Pete Popov <ppopov@mvista.com>,
George Gensure <werkt@csh.rit.edu>,
linux-mips@oss.sgi.com
Subject: Re: newest kernel
Date: Tue, 22 May 2001 14:33:30 +0200 [thread overview]
Message-ID: <20010522143330.B9891@paradigm.rfc822.org> (raw)
In-Reply-To: <3B09A388.8AC77827@mvista.com>; from jsun@mvista.com on Mon, May 21, 2001 at 04:23:52PM -0700
On Mon, May 21, 2001 at 04:23:52PM -0700, Jun Sun wrote:
> The patch seems to be just a fast implementation of sysmips(). Why would it
> solve an otherwise illegal instruction problem?
>
> George, what was exactly the error and the faulty instruction?
Wrong - Its not only a "fast" path sysmips. It solves the illegal instruction
case as it carefully doesnt touch registers it should not touch.
The sysmips illegal instruction stuff came from the early exit
needed to skip the -EXXXX case in the scall32.S which did not
restore the modified registers. This needed fixing and there was
no clean way of doing this in C thus i wrote an asm sysmips/MIPS_ATOMIC_SET
and called it "fast_sysmips" which itself would go into the old
sysmips function when not MIPS_ATOMIC_SET.
Flo
--
Florian Lohoff flo@rfc822.org +49-5201-669912
Why is it called "common sense" when nobody seems to have any?
next prev parent reply other threads:[~2001-05-22 12:33 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-21 22:45 newest kernel George Gensure
2001-05-21 23:10 ` Pete Popov
2001-05-21 23:23 ` Jun Sun
2001-05-21 23:25 ` Pete Popov
2001-05-22 12:33 ` Florian Lohoff [this message]
2001-05-22 17:04 ` George Gensure
2001-05-22 17:04 ` George Gensure
2001-05-22 22:46 ` MIPS_ATOMIC_SET again (Re: " Jun Sun
2001-05-23 6:37 ` Joe deBlaquiere
2001-05-23 13:34 ` Maciej W. Rozycki
2001-05-23 17:48 ` Joe deBlaquiere
2001-05-23 18:20 ` Kevin D. Kissell
2001-05-23 18:20 ` Kevin D. Kissell
2001-05-23 19:37 ` Maciej W. Rozycki
2001-05-23 23:49 ` Kevin D. Kissell
2001-05-23 23:49 ` Kevin D. Kissell
2001-05-24 4:11 ` Joe deBlaquiere
2001-05-24 10:56 ` Maciej W. Rozycki
2001-05-24 10:44 ` Maciej W. Rozycki
2001-05-24 15:15 ` Kevin D. Kissell
2001-05-24 15:15 ` Kevin D. Kissell
2001-05-24 16:21 ` Maciej W. Rozycki
2001-05-24 22:46 ` Joe deBlaquiere
2001-05-25 17:19 ` Maciej W. Rozycki
2001-05-25 22:02 ` Surprise! (Re: " Jun Sun
2001-05-25 23:56 ` Jun Sun
2001-05-28 15:34 ` Maciej W. Rozycki
2001-05-29 22:32 ` Jun Sun
2001-05-30 6:46 ` Kevin D. Kissell
2001-05-30 6:46 ` Kevin D. Kissell
2001-05-30 13:42 ` Maciej W. Rozycki
2001-05-30 17:39 ` Jun Sun
2001-05-31 8:37 ` Maciej W. Rozycki
2001-05-31 11:54 ` Ralf Baechle
2001-05-31 19:16 ` Jun Sun
2001-05-23 18:41 ` Jun Sun
2001-05-23 18:54 ` Florian Lohoff
2001-05-23 18:55 ` Florian Lohoff
2001-05-23 20:04 ` Joe deBlaquiere
2001-05-24 9:32 ` Maciej W. Rozycki
2001-05-26 13:14 ` Florian Lohoff
2001-05-28 15:37 ` Maciej W. Rozycki
2001-05-26 13:15 ` Florian Lohoff
2001-05-28 15:43 ` Maciej W. Rozycki
2001-05-28 16:25 ` Kevin D. Kissell
2001-05-28 16:25 ` Kevin D. Kissell
2001-05-28 17:10 ` Maciej W. Rozycki
2001-05-29 6:57 ` Geert Uytterhoeven
2001-05-29 10:45 ` Maciej W. Rozycki
2001-05-29 13:02 ` Joe deBlaquiere
2001-05-29 15:45 ` Mike McDonald
2001-05-30 1:32 ` Mike McDonald
2001-05-30 7:09 ` Kevin D. Kissell
2001-05-30 7:09 ` Kevin D. Kissell
2001-05-30 14:48 ` J. Scott Kasten
2001-05-30 14:48 ` J. Scott Kasten
2001-05-29 22:37 ` Jun Sun
2001-05-30 12:01 ` Maciej W. Rozycki
2001-05-30 17:54 ` Jun Sun
2001-05-31 7:39 ` Maciej W. Rozycki
2001-05-23 19:44 ` Maciej W. Rozycki
2001-05-24 4:25 ` Keith M Wesolowski
2001-05-23 21:06 ` Jun Sun
2001-05-23 19:29 ` Maciej W. Rozycki
2001-05-23 17:10 ` Jun Sun
2001-05-23 13:18 ` Maciej W. Rozycki
2001-05-23 17:38 ` Jun Sun
2001-05-23 18:47 ` Maciej W. Rozycki
2001-05-23 20:58 ` Jun Sun
2001-05-23 13:45 ` wrt irc joshua
2001-05-23 15:19 ` porting from headers Keith M Wesolowski
2001-05-23 15:55 ` wrt irc nick
2001-05-23 15:57 ` Keith M Wesolowski
2001-05-23 16:03 ` nick
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