From: Andi Kleen <ak@suse.de>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Andi Kleen <ak@suse.de>, Linus Torvalds <torvalds@transmeta.com>,
David Howells <dhowells@cambridge.redhat.com>,
Andrew Morton <andrewm@uow.edu.au>, Ben LaHaise <bcrl@redhat.com>,
Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] i386 rw_semaphores fix
Date: Wed, 11 Apr 2001 02:00:58 +0200 [thread overview]
Message-ID: <20010411020058.B28670@gruyere.muc.suse.de> (raw)
In-Reply-To: <20010410220551.A24251@gruyere.muc.suse.de> <E14n6Be-0005Ir-00@the-village.bc.nu>
In-Reply-To: <E14n6Be-0005Ir-00@the-village.bc.nu>; from alan@lxorguk.ukuu.org.uk on Tue, Apr 10, 2001 at 11:00:31PM +0100
On Tue, Apr 10, 2001 at 11:00:31PM +0100, Alan Cox wrote:
> > I guess 386 could live with an exception handler that emulates it.
>
> 386 could use a simpler setup and is non SMP
The idea was to have a `generic' kernel that works on all architectures.
If you drop 386 support much is better already.
> > (BTW an generic exception handler for CMPXCHG would also be very useful
> > for glibc -- currently it has special checking code for 386 in its mutexes)
> > The 386 are so slow that nobody would probably notice a bit more slowness
> > by a few exceptions.
>
> Be serious. You can compile glibc without 386 support. Most vendors already
> distribute 386/586 or 386/686 glibc sets.
Yes, and with CMPXCHG handler in the kernel it wouldn't be needed
(the other 686 optimizations like memcpy also work on 386)
-Andi
next prev parent reply other threads:[~2001-04-11 0:01 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3AD0FD0F.9B0C47FD@uow.edu.au>
2001-04-09 3:08 ` rw_semaphores Linus Torvalds
2001-04-09 4:18 ` rw_semaphores Linus Torvalds
2001-04-09 13:55 ` rw_semaphores Ben LaHaise
2001-04-10 2:41 ` rw_semaphores Tachino Nobuhiro
2001-04-10 5:43 ` rw_semaphores Linus Torvalds
2001-04-10 7:47 ` rw_semaphores David Howells
2001-04-10 18:02 ` [PATCH] i386 rw_semaphores fix David Howells
2001-04-10 19:42 ` Linus Torvalds
2001-04-10 19:56 ` x86 cpu configuration (was: Re: [PATCH] i386 rw_semaphores fix) Jeff Garzik
2001-04-10 21:58 ` Alan Cox
2001-04-10 20:05 ` [PATCH] i386 rw_semaphores fix Andi Kleen
2001-04-10 20:16 ` Linus Torvalds
2001-04-10 22:00 ` Alan Cox
2001-04-11 0:00 ` Andi Kleen [this message]
2001-04-11 0:13 ` David Weinehall
2001-04-11 0:20 ` Andi Kleen
2001-04-11 0:56 ` David Weinehall
2001-04-11 1:04 ` Andi Kleen
2001-04-11 12:32 ` Alan Cox
2001-04-11 0:55 ` Linus Torvalds
2001-04-11 1:07 ` Andi Kleen
2001-04-11 1:12 ` Linus Torvalds
2001-04-11 1:23 ` Andi Kleen
2001-04-11 12:36 ` Alan Cox
2001-04-11 18:05 ` H. Peter Anvin
2001-04-11 12:28 ` Alan Cox
2001-04-11 18:06 ` H. Peter Anvin
2001-04-11 22:06 ` Alan Cox
2001-04-11 22:42 ` H. Peter Anvin
2001-04-11 22:55 ` Alan Cox
2001-04-10 21:57 ` Alan Cox
2001-04-11 0:40 ` Tim Wright
2001-04-11 7:38 ` David Howells
2001-04-11 12:24 ` Maciej W. Rozycki
2001-04-11 12:57 ` [PATCH] 2nd try: " David Howells
2001-04-11 16:37 ` [PATCH] 3rd " David Howells
2001-04-11 21:41 ` [PATCH] 4th " David Howells
2001-04-12 18:16 ` Andrew Morton
2001-04-11 23:00 ` [PATCH] 3rd " Anton Blanchard
2001-04-12 15:06 ` [PATCH] i386 rw_semaphores, general abstraction patch David Howells
2001-04-11 16:56 ` [PATCH] i386 rw_semaphores fix Andrew Morton
2001-04-11 17:36 ` David Howells
2001-04-11 18:41 ` Linus Torvalds
2001-04-11 21:27 ` David Howells
2001-04-16 14:39 ` rw_semaphores yodaiken
2001-04-16 14:56 ` rw_semaphores Alan Cox
2001-04-16 17:05 ` rw_semaphores Linus Torvalds
2001-04-16 17:34 ` rw_semaphores yodaiken
2001-04-16 17:26 ` rw_semaphores Andrew Morton
2001-04-10 6:33 ` rw_semaphores Tachino Nobuhiro
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