From: Andreas Steinmetz <ast@domdv.de>
To: Linus Torvalds <torvalds@osdl.org>
Cc: linux-os@analogic.com,
Kernel Mailing List <linux-kernel@vger.kernel.org>,
Richard Henderson <rth@redhat.com>, Andi Kleen <ak@muc.de>,
Andrew Morton <akpm@osdl.org>, Jan Hubicka <jh@suse.cz>
Subject: Re: Semaphore assembly-code bug
Date: Fri, 29 Oct 2004 20:58:15 +0200 [thread overview]
Message-ID: <418292C7.2090707@domdv.de> (raw)
In-Reply-To: <Pine.LNX.4.58.0410291103000.28839@ppc970.osdl.org>
Linus Torvalds wrote:
> Somebody should check what the Pentium M does. It might just notice that
> "lea 4(%esp),%esp" is the same as "add 4 to esp", but it's entirely
> possible that lea will confuse its stack engine logic and cause
> stack-related address generation stalls..
Now especially Intel tells everybody in their Pentium Optimization
manuals to *use* lea whereever possible as this operation doesn't depend
on the ALU and is processed in other parts of the CPU.
Sample quote from said manual (P/N 248966-05):
"Use the lea instruction and the full range of addressing modes to do
address calculation"
I would guess Intel would add caveats about such stalls in this manual
if there would be any.
--
Andreas Steinmetz SPAMmers use robotrap@domdv.de
next prev parent reply other threads:[~2004-10-29 19:39 UTC|newest]
Thread overview: 246+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-18 22:45 Linux v2.6.9 Linus Torvalds
2004-10-18 23:27 ` Thomas Zehetbauer
2004-10-19 2:54 ` Eric W. Biederman
2004-10-19 16:55 ` Jesper Juhl
2004-10-19 14:36 ` Linux v2.6.9... (compile stats) John Cherry
2004-10-19 16:18 ` Matthew Dharm
2004-10-19 16:49 ` viro
2004-10-19 21:37 ` John Cherry
2004-10-20 22:11 ` John Cherry
2004-10-20 22:41 ` viro
2004-10-21 0:12 ` Linus Torvalds
2004-10-21 0:29 ` Jeff Garzik
2004-10-21 0:44 ` viro
2004-10-21 1:55 ` viro
2004-10-21 1:59 ` Jeff Garzik
2004-10-21 2:24 ` viro
2004-10-21 2:37 ` Jeff Garzik
2004-10-21 4:35 ` viro
2004-10-21 8:57 ` Jeff Garzik
2004-10-20 22:50 ` Dave Jones
2004-10-19 17:38 ` Linux v2.6.9 and GPL Buyout Jeff V. Merkey
2004-10-19 19:13 ` Russell King
2004-10-19 19:04 ` Jeff V. Merkey
2004-10-19 19:24 ` Kurt Wall
2004-10-19 19:12 ` Jeff V. Merkey
2004-10-19 20:01 ` Richard B. Johnson
2004-10-19 20:39 ` Matt Mackall
2004-10-20 0:06 ` Richard B. Johnson
2004-10-20 5:21 ` Matt Mackall
2004-10-19 19:28 ` Andre Hedrick
2004-10-19 19:10 ` Jeff V. Merkey
2004-10-19 19:30 ` Rik van Riel
2004-10-19 19:05 ` Jeff V. Merkey
2004-10-19 20:14 ` Diego Calleja
2004-10-19 19:41 ` Jeff V. Merkey
2004-10-20 8:27 ` Bernd Petrovitsch
2004-10-20 8:45 ` Jens Axboe
2004-10-19 19:47 ` Jeff V. Merkey
2004-10-19 20:05 ` Richard B. Johnson
2004-10-19 19:38 ` Jeff V. Merkey
2004-10-19 20:30 ` Thomas Gleixner
2004-10-19 20:15 ` Jeff V. Merkey
2004-10-22 23:22 ` Tonnerre
2004-10-19 19:45 ` Ross Biro
2004-10-19 19:36 ` Jeff V. Merkey
2004-10-19 19:54 ` David Johnson
2004-10-19 19:55 ` viro
2004-10-19 19:25 ` Jeff V. Merkey
2004-10-19 20:38 ` Dax Kelson
2004-10-19 20:09 ` Jeff V. Merkey
2004-10-19 22:16 ` Jim Nelson
2004-10-19 22:57 ` Bernd Petrovitsch
2004-10-19 22:27 ` Scott Robert Ladd
2004-10-20 19:41 ` Bill Davidsen
2004-10-20 1:15 ` Horst von Brand
2004-10-20 1:16 ` Bastiaan Spandaw
2004-10-20 19:35 ` Bill Davidsen
2004-10-20 3:45 ` Ryan Anderson
2004-10-20 4:18 ` Lee Revell
2004-10-20 4:41 ` Lee Revell
2004-10-20 11:49 ` Richard B. Johnson
2004-10-29 12:12 ` Semaphore assembly-code bug linux-os
2004-10-29 14:46 ` Linus Torvalds
2004-10-29 15:11 ` Andi Kleen
2004-10-29 18:18 ` Linus Torvalds
2004-10-29 18:35 ` Richard Henderson
2004-10-29 16:06 ` Andreas Steinmetz
2004-10-29 17:08 ` linux-os
2004-10-29 18:06 ` Linus Torvalds
2004-10-29 18:39 ` linux-os
2004-10-29 19:12 ` Linus Torvalds
2004-11-01 1:31 ` linux-os
2004-11-01 5:49 ` Linus Torvalds
2004-11-01 20:23 ` dean gaudet
2004-11-01 20:52 ` linux-os
2004-11-01 21:23 ` dean gaudet
2004-11-01 22:22 ` linux-os
2004-11-01 21:40 ` Linus Torvalds
2004-11-01 21:46 ` Linus Torvalds
2004-11-02 15:02 ` linux-os
2004-11-02 16:02 ` Linus Torvalds
2004-11-02 16:06 ` Linus Torvalds
2004-11-02 16:51 ` linux-os
2004-11-01 22:16 ` linux-os
2004-11-01 22:26 ` Linus Torvalds
2004-11-01 23:14 ` linux-os
2004-11-01 23:42 ` Linus Torvalds
2004-11-03 1:52 ` Horst von Brand
2004-11-03 21:24 ` Bill Davidsen
2004-11-02 6:37 ` Chris Friesen
2004-10-29 18:58 ` Andreas Steinmetz [this message]
2004-10-29 19:15 ` Linus Torvalds
2004-10-29 19:40 ` Andreas Steinmetz
2004-10-29 19:56 ` Linus Torvalds
2004-10-29 22:07 ` Jeff Garzik
2004-10-29 23:50 ` dean gaudet
2004-10-30 0:15 ` Linus Torvalds
2004-10-29 23:37 ` dean gaudet
2004-10-29 17:22 ` linux-os
2004-10-29 17:55 ` Richard Henderson
2004-10-29 18:17 ` linux-os
2004-10-29 18:42 ` Linus Torvalds
2004-10-29 18:54 ` Linus Torvalds
2004-10-30 3:35 ` Jeff Garzik
2004-10-29 19:20 ` Linus Torvalds
2004-10-29 19:26 ` Linus Torvalds
2004-10-29 21:03 ` Linus Torvalds
2004-10-29 17:57 ` Richard Henderson
2004-10-29 18:37 ` Gabriel Paubert
2004-10-20 5:58 ` Linux v2.6.9 and GPL Buyout John Alvord
2004-10-20 14:42 ` Martin Waitz
2004-10-21 23:59 ` Kelledin
2004-10-22 8:46 ` Bernd Petrovitsch
2004-10-22 9:07 ` David Weinehall
2004-10-22 16:15 ` Jeff V. Merkey
2004-10-22 17:52 ` Al Viro
2004-10-22 17:22 ` Jeff V. Merkey
2004-10-22 19:37 ` Jeff V. Merkey
2004-10-22 20:46 ` Grahame White
2004-10-22 20:58 ` Buddy Lucas
2004-10-22 21:00 ` Richard B. Johnson
2004-10-22 21:03 ` Thomas Gleixner
2004-10-23 12:33 ` Bernd Petrovitsch
2004-10-24 14:15 ` Kai Henningsen
2004-10-27 1:45 ` Horst von Brand
2004-10-24 11:00 ` Matthias Andree
2004-10-24 14:13 ` Kai Henningsen
2004-10-25 18:44 ` Bill Davidsen
2004-10-20 19:46 ` Bill Davidsen
2004-10-19 21:02 ` Pekka Pietikainen
2004-10-19 20:27 ` Jeff V. Merkey
2004-10-22 6:54 ` Erik Andersen
2004-10-22 16:12 ` Jeff V. Merkey
2004-10-19 21:17 ` Paul Fulghum
2004-10-20 20:41 ` Geert Uytterhoeven
2004-10-23 13:43 ` James Bruce
2004-10-19 21:26 ` Ramón Rey Vicente
2004-10-19 22:52 ` Buddy Lucas
2004-10-20 23:43 ` Eric Bambach
2004-10-20 23:48 ` Eric Bambach
2004-10-20 23:59 ` Hua Zhong
2004-10-21 0:13 ` Russell Miller
2004-10-21 0:18 ` Adam Heath
2004-10-21 10:16 ` Horst von Brand
2004-10-22 8:48 ` Ingo Molnar
2004-10-22 16:15 ` Jeff V. Merkey
2004-10-23 0:14 ` Jon Masters
2004-10-22 23:46 ` Jeff V. Merkey
2004-10-23 0:57 ` Jon Masters
2004-10-23 4:42 ` Jeff V. Merkey
2004-10-23 6:32 ` Nick Piggin
[not found] ` <20041023064538.GA7866@galt.devicelogics.com>
2004-10-23 7:20 ` Jeff V. Merkey
2004-10-23 10:11 ` Gene Heskett
2004-10-23 16:28 ` Linus Torvalds
2004-10-24 2:48 ` Jesper Juhl
2004-10-24 5:11 ` Jeff V. Merkey
2004-10-24 11:14 ` Jon Masters
2004-10-24 11:50 ` Jim Nelson
2004-10-24 15:35 ` Ingo Molnar
2004-10-24 15:53 ` Bernd Petrovitsch
2004-10-31 23:14 ` Jan 'JaSan' Sarenik
2004-10-24 2:11 ` Buddy Lucas
2004-10-23 0:38 ` Lee Revell
2004-10-23 0:07 ` Jeff V. Merkey
2004-10-23 1:06 ` Lee Revell
2004-10-21 2:41 ` Linux v2.6.9 (Strange tty problem?) Paul
2004-10-21 9:07 ` Alan Cox
2004-10-21 12:39 ` Russell King
2004-10-21 13:20 ` Paul Fulghum
2004-10-21 15:37 ` Alan Cox
2004-10-21 17:00 ` Paul Fulghum
2004-10-21 15:47 ` Paul Fulghum
2004-10-21 18:12 ` Paul Fulghum
2004-10-31 21:11 ` Linux v2.6.9 dies when starting X on radeon 9200 SE PCI Helge Hafting
[not found] <Pine.LNX.4.58.0410181540080.2287@ppc970.osdl.org.suse.lists.linux.kernel>
[not found] ` <417550FB.8020404@drdos.com.suse.lists.linux.kernel>
[not found] ` <1098218286.8675.82.camel@mentorng.gurulabs.com.suse.lists.linux.kernel>
[not found] ` <41757478.4090402@drdos.com.suse.lists.linux.kernel>
[not found] ` <20041020034524.GD10638@michonline.com.suse.lists.linux.kernel>
[not found] ` <1098245904.23628.84.camel@krustophenia.net.suse.lists.linux.kernel>
[not found] ` <1098247307.23628.91.camel@krustophenia.net.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.61.0410200744310.10521@chaos.analogic.com.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.61.0410290805570.11823@chaos.analogic.com.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.58.0410290740120.28839@ppc970.osdl.org.suse.lists.linux.kernel>
[not found] ` <41826A7E.6020801@domdv.de.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.61.0410291255400.17270@chaos.analogic.com.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.58.0410291103000.28839@ppc970.osdl.org.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.61.0410291631250.8616@twinlark.arctic.org.suse.lists.linux.kernel>
2004-10-30 2:04 ` Semaphore assembly-code bug Andi Kleen
[not found] ` <Pine.LNX.4.61.0410291316470.3945@chaos.analogic.com.suse.lists.linux.kernel>
[not found] ` <20041029175527.GB25764@redhat.com.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.61.0410291416040.4844@chaos.analogic.com.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.58.0410291133220.28839@ppc970.osdl.org.suse.lists.linux.kernel>
2004-10-30 2:13 ` Andi Kleen
2004-10-30 9:28 ` Denis Vlasenko
2004-10-30 17:53 ` Linus Torvalds
2004-10-30 21:00 ` Denis Vlasenko
2004-10-31 0:39 ` Andi Kleen
2004-10-31 1:43 ` Linus Torvalds
2004-10-31 2:04 ` Andi Kleen
2004-11-04 16:01 Linux-2.6.9 won't allow a write to a NTFS file-system linux-os
2004-11-04 16:48 ` Giuseppe Bilotta
2004-11-04 17:09 ` linux-os
2004-11-04 17:40 ` Giuseppe Bilotta
2004-11-04 17:46 ` Mathieu Segaud
2004-11-04 22:17 ` Anton Altaparmakov
2004-11-04 22:18 ` Anton Altaparmakov
2004-11-04 22:38 ` linux-os
2004-11-05 14:43 ` Rahul Karnik
2004-11-05 1:46 ` Horst von Brand
2004-11-05 12:41 ` linux-os
2004-12-02 0:04 What if? Imanpreet Singh Arora
2004-12-02 4:40 ` Theodore Ts'o
2004-12-02 6:39 ` Norbert van Nobelen
2004-12-02 8:24 ` James Bruce
2004-12-02 20:25 ` Theodore Ts'o
2004-12-03 2:23 ` David Schwartz
2004-12-02 8:33 ` J.A. Magallon
2004-12-02 10:46 ` Bernd Petrovitsch
2004-12-02 10:56 ` Pawel Sikora
2004-12-13 15:23 ` H. Peter Anvin
2004-12-13 21:08 ` J.A. Magallon
2004-12-16 0:57 ` Alan Cox
2004-12-16 2:44 ` H. Peter Anvin
2004-12-16 13:23 ` Alan Cox
2004-12-16 15:23 ` Geert Uytterhoeven
2004-12-16 20:37 ` H. Peter Anvin
2004-12-16 20:52 ` Jan Engelhardt
2004-12-16 20:56 ` H. Peter Anvin
2004-12-16 21:08 ` Jan Engelhardt
2004-12-02 10:25 ` Jan Engelhardt
2004-12-05 0:23 ` Horst von Brand
2004-12-05 6:21 ` Kyle Moffett
2004-12-05 22:43 ` Horst von Brand
2004-12-06 17:27 ` linux-os
2004-12-06 18:52 ` Horst von Brand
2004-12-02 10:53 ` Bernd Petrovitsch
2004-12-11 8:52 ` Gábor Lénárt
2004-12-17 1:33 [Coverity] Untrusted user data in kernel Bryan Fulton
2004-12-17 5:15 ` James Morris
2004-12-17 5:25 ` Patrick McHardy
2004-12-17 6:45 ` James Morris
2004-12-17 13:18 ` Tomas Carnecky
2004-12-17 19:16 ` David S. Miller
2004-12-17 19:34 ` Tomas Carnecky
2004-12-17 19:30 ` David S. Miller
2004-12-17 15:47 ` Bill Davidsen
2004-12-17 16:11 ` linux-os
2004-12-17 16:31 ` Oliver Neukum
2004-12-17 18:37 ` Bill Davidsen
2004-12-17 19:18 ` Tomas Carnecky
2004-12-17 19:30 ` Oliver Neukum
2004-12-17 19:39 ` Tomas Carnecky
2004-12-18 1:42 ` Horst von Brand
2004-12-17 15:10 ` Pavel Machek
2004-12-17 15:38 ` James Morris
2005-01-05 12:04 ` Marcelo Tosatti
2005-01-05 15:09 ` Jan Harkes
2005-01-05 23:17 ` Nathan Scott
[not found] ` <20050105161653.GF13455@fi.muni.cz>
[not found] ` <20050105140549.GA14622@logos.cnet>
2005-01-06 9:18 ` Jan Kasprzak
2005-01-06 14:48 ` Paulo Marques
2005-01-06 16:29 ` Alan Cox
2005-01-07 21:49 ` [PATCH 2.4.29-pre3-bk4] fs/coda " Jan Harkes
2005-01-07 21:54 ` [PATCH 2.6.10-mm2] " Jan Harkes
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