From: Rene Herman <rene.herman@gmail.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Rene Herman <rene.herman@gmail.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
"David P. Reed" <dpreed@reed.com>,
"H. Peter Anvin" <hpa@zytor.com>, Paul Rolland <rol@as2917.net>,
Pavel Machek <pavel@ucw.cz>, Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org, Ingo Molnar <mingo@redhat.com>,
rol@witbe.net
Subject: Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override.
Date: Mon, 17 Dec 2007 23:01:18 +0100 [thread overview]
Message-ID: <4766F1AE.4060601@keyaccess.nl> (raw)
In-Reply-To: <20071217215658.GA4782@elte.hu>
On 17-12-07 22:56, Ingo Molnar wrote:
> * Rene Herman <rene.herman@gmail.com> wrote:
>
>>>> Signed-off-by: Rene Herman <rene.herman@gmail.com>
>>> hm, i see this as a step backwards from the pretty flexible patch
>>> that David already tested. (and which also passed a few hundred
>>> bootup tests on my x86 test-grid)
>> Please see Alan's comment that udelay (and none) shouldn't yet be
>> provided as a choice. It opens race windows in drivers even when it
>> works in practice on most setups. The version with "udelay" and "none"
>> is not minimal, not low risk and certainly not .24 material.
>
> huh? By default we still use port 0x80. Any udelay is non-default and
> needs the user to explicitly switch to it. But it enables us to debug
> any suspected drivers by asking testers to: "please try this driver with
> io_delay=udelay, does it still work fine?". So those extra options are
> quite sensible. If you have any real technical arguments against that
> then please let us know.
Ingo, have lots of fun playing with yourself, but remove my sign off from
anything with the udelay and none methods.
Rene.
next prev parent reply other threads:[~2007-12-17 22:03 UTC|newest]
Thread overview: 273+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <466F0941.9060201@reed.com>
[not found] ` <1181682498.8176.224.camel@chaos>
[not found] ` <469578CD.3080609@reed.com>
[not found] ` <1184216528.12353.203.camel@chaos>
[not found] ` <1184218962.12353.209.camel@chaos>
[not found] ` <46964352.7040301@reed.com>
[not found] ` <1184253339.12353.223.camel@chaos>
[not found] ` <469697C6.50903@reed.com>
[not found] ` <1184274754.12353.254.camel@chaos>
2007-11-12 16:55 ` [PATCH] x86: fix locking and sync bugs in x86_64 RTC code in time_64.c David P. Reed
2007-11-14 7:49 ` Thomas Gleixner
2007-11-14 13:10 ` David P. Reed
2007-11-14 18:26 ` Matt Mackall
2007-11-14 21:22 ` David P. Reed
2007-11-12 17:02 ` [PATCH] time: fix typo that makes sync_cmos_clock erratic David P. Reed
2007-11-14 7:57 ` Thomas Gleixner
2007-11-12 19:19 ` David P. Reed
2007-11-14 22:47 ` [PATCH] x86: fix freeze in x86_64 RTC update code in time_64.c David P. Reed
2007-11-14 22:49 ` [PATCH] time: fix typo that makes sync_cmos_clock erratic David P. Reed
2007-11-15 1:14 ` [PATCH] x86: on x86_64, correct reading of PC RTC when update in progress in time_64.c David P. Reed
2007-11-15 19:33 ` Thomas Gleixner
2007-11-15 20:31 ` David P. Reed
2007-11-15 22:17 ` Thomas Gleixner
2007-12-14 2:59 ` [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc David P. Reed
2007-12-14 7:49 ` Yinghai Lu
2007-12-14 9:45 ` Rene Herman
2007-12-14 14:23 ` Ingo Molnar
2007-12-14 14:36 ` Rene Herman
2007-12-14 14:46 ` Ingo Molnar
2007-12-14 14:56 ` Rene Herman
2007-12-14 18:36 ` Alan Cox
2007-12-14 18:48 ` H. Peter Anvin
2007-12-14 21:05 ` Pavel Machek
2007-12-15 22:59 ` Pavel Machek
2007-12-14 10:51 ` Andi Kleen
2007-12-14 11:11 ` David P. Reed
2007-12-14 13:15 ` Ingo Molnar
2007-12-14 13:24 ` Ingo Molnar
2007-12-14 13:47 ` Ingo Molnar
2007-12-14 14:41 ` Ingo Molnar
2007-12-14 13:42 ` Rene Herman
2007-12-14 14:03 ` Ingo Molnar
2007-12-14 14:10 ` Rene Herman
2007-12-14 14:21 ` Ingo Molnar
2007-12-14 18:02 ` H. Peter Anvin
2007-12-14 18:23 ` Rene Herman
2007-12-14 21:06 ` Pavel Machek
2007-12-14 22:13 ` H. Peter Anvin
2007-12-14 23:29 ` Alan Cox
2007-12-15 3:04 ` David P. Reed
2007-12-15 5:45 ` H. Peter Anvin
2007-12-15 17:17 ` David P. Reed
2007-12-15 17:46 ` Alan Cox
2007-12-17 22:50 ` Jan Engelhardt
2007-12-17 22:52 ` H. Peter Anvin
2007-12-15 8:08 ` Paul Rolland
2007-12-15 8:13 ` Rene Herman
2007-12-15 20:27 ` H. Peter Anvin
2007-12-15 23:26 ` [PATCH] x86: " Rene Herman
2007-12-15 23:51 ` H. Peter Anvin
2007-12-16 0:05 ` H. Peter Anvin
2007-12-16 13:15 ` [PATCH] x86: provide a DMI based port 0x80 I/O delay override Rene Herman
2007-12-16 15:22 ` Ingo Molnar
2007-12-17 1:43 ` Rene Herman
2007-12-17 2:05 ` H. Peter Anvin
2007-12-17 2:19 ` Rene Herman
2007-12-17 3:35 ` H. Peter Anvin
2007-12-17 13:02 ` Rene Herman
2007-12-17 17:14 ` H. Peter Anvin
2007-12-17 19:43 ` David P. Reed
2007-12-17 19:55 ` H. Peter Anvin
2007-12-17 21:02 ` David P. Reed
2007-12-17 21:17 ` H. Peter Anvin
2007-12-17 21:25 ` Alan Cox
2008-01-01 15:57 ` David P. Reed
2008-01-01 21:16 ` H. Peter Anvin
2008-01-01 15:59 ` David P. Reed
2008-01-01 16:15 ` Alan Cox
2008-01-01 16:43 ` Ingo Molnar
2008-01-01 17:32 ` Alan Cox
2008-01-01 18:45 ` Ingo Molnar
2008-01-01 20:14 ` Christer Weinigel
2008-01-01 21:13 ` Alan Cox
2008-01-01 21:07 ` Alan Cox
2008-01-02 10:04 ` Ingo Molnar
2008-01-02 13:11 ` [linux-kernel] " David P. Reed
2008-01-02 13:21 ` Ingo Molnar
2008-01-02 13:47 ` Alan Cox
2008-01-02 15:35 ` Rene Herman
2008-01-02 15:50 ` Rene Herman
2008-01-01 17:32 ` Christer Weinigel
2008-01-01 18:46 ` Ingo Molnar
2008-01-01 19:35 ` Christer Weinigel
2008-01-01 19:59 ` Rene Herman
2008-01-01 20:55 ` Christer Weinigel
2008-01-01 21:24 ` H. Peter Anvin
2008-01-01 21:01 ` Ingo Molnar
2008-01-01 21:26 ` Alan Cox
2008-01-01 21:42 ` Christer Weinigel
2008-01-01 21:42 ` Rene Herman
2008-01-01 21:50 ` H. Peter Anvin
2008-01-01 21:21 ` H. Peter Anvin
2008-01-01 23:05 ` Christer Weinigel
2008-01-01 23:12 ` Alan Cox
2008-01-02 0:23 ` Christer Weinigel
2008-01-02 10:00 ` Ingo Molnar
2008-01-01 17:32 ` David P. Reed
2008-01-01 17:38 ` Alan Cox
2008-01-01 21:15 ` H. Peter Anvin
2008-01-01 21:35 ` Rene Herman
2008-01-01 21:44 ` H. Peter Anvin
2008-01-01 22:35 ` Rene Herman
2008-01-01 22:39 ` H. Peter Anvin
2008-01-01 23:11 ` Rene Herman
2008-01-02 0:25 ` Rene Herman
2008-01-02 0:55 ` Christer Weinigel
2008-01-02 1:00 ` Rene Herman
2008-01-02 2:27 ` H. Peter Anvin
2008-01-09 17:27 ` Maciej W. Rozycki
2008-01-09 18:18 ` H. Peter Anvin
2008-01-01 17:31 ` Pavel Machek
2008-01-01 17:33 ` David P. Reed
2007-12-17 4:09 ` H. Peter Anvin
2007-12-17 10:57 ` Ingo Molnar
2007-12-17 11:29 ` Ingo Molnar
2007-12-17 13:34 ` David P. Reed
2007-12-17 12:15 ` Rene Herman
2007-12-17 13:09 ` Ingo Molnar
2007-12-17 13:22 ` Rene Herman
2007-12-17 13:31 ` Pavel Machek
2007-12-17 13:31 ` Rene Herman
2007-12-17 13:32 ` David P. Reed
2007-12-17 13:36 ` Rene Herman
2007-12-17 14:39 ` Ingo Molnar
2007-12-17 16:12 ` Alan Cox
2007-12-17 16:48 ` Ingo Molnar
2007-12-17 20:48 ` Rene Herman
2007-12-17 20:57 ` H. Peter Anvin
2007-12-17 21:33 ` Rene Herman
2007-12-17 21:40 ` H. Peter Anvin
2007-12-17 21:46 ` Ingo Molnar
2007-12-17 21:50 ` Rene Herman
2007-12-17 21:41 ` Ingo Molnar
2007-12-17 21:47 ` Rene Herman
2007-12-17 21:56 ` Ingo Molnar
2007-12-17 22:01 ` Rene Herman [this message]
2007-12-17 22:18 ` David P. Reed
2007-12-17 19:38 ` David P. Reed
2007-12-17 19:55 ` H. Peter Anvin
2007-12-17 21:28 ` Ingo Molnar
2007-12-16 21:42 ` H. Peter Anvin
2007-12-17 1:48 ` Rene Herman
2007-12-17 1:53 ` H. Peter Anvin
2007-12-16 23:12 ` David P. Reed
2007-12-17 1:56 ` Rene Herman
2007-12-17 2:04 ` H. Peter Anvin
2007-12-17 2:15 ` Rene Herman
2007-12-16 0:23 ` [PATCH] x86: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc David P. Reed
2007-12-15 20:26 ` [PATCH] x86_64: " H. Peter Anvin
2007-12-15 22:55 ` Pavel Machek
2007-12-16 9:27 ` Ingo Molnar
2007-12-17 21:04 ` Rene Herman
2007-12-17 23:20 ` Pavel Machek
2007-12-18 0:06 ` Alan Cox
2007-12-18 15:49 ` Lennart Sorensen
2007-12-17 22:46 ` Jan Engelhardt
2007-12-15 7:43 ` Ingo Molnar
2007-12-15 7:58 ` Rene Herman
2007-12-15 13:27 ` Ingo Molnar
2007-12-15 14:01 ` Rene Herman
2007-12-15 20:25 ` H. Peter Anvin
2007-12-15 14:29 ` Alan Cox
2007-12-15 16:19 ` David P. Reed
2007-12-15 16:48 ` Mark Lord
2007-12-15 17:51 ` Alan Cox
2007-12-15 23:00 ` Pavel Machek
2007-12-15 23:04 ` H. Peter Anvin
2007-12-16 9:40 ` Ingo Molnar
2007-12-16 21:43 ` H. Peter Anvin
2007-12-16 23:06 ` David P. Reed
2007-12-16 23:23 ` Pavel Machek
2007-12-16 23:34 ` H. Peter Anvin
2007-12-26 20:49 ` Pavel Machek
2007-12-17 1:51 ` Rene Herman
2007-12-14 16:08 ` Avi Kivity
2007-12-15 2:13 ` David P. Reed
2007-12-15 2:20 ` H. Peter Anvin
2007-12-17 18:14 ` linux-os (Dick Johnson)
2007-12-17 18:54 ` Rene Herman
2007-12-19 15:03 ` Avi Kivity
2007-12-30 3:34 [PATCH] x86: provide a DMI based port 0x80 I/O delay override Rene Herman
2007-12-30 9:30 ` Linus Torvalds
2007-12-30 12:48 ` Andi Kleen
2007-12-30 13:05 ` Ingo Molnar
2007-12-30 16:08 ` Andi Kleen
2007-12-30 16:28 ` Ingo Molnar
2007-12-30 18:21 ` Andi Kleen
2007-12-30 13:03 ` Ingo Molnar
2007-12-30 14:14 ` Rene Herman
2007-12-30 14:47 ` Alan Cox
2007-12-30 15:28 ` Ingo Molnar
2007-12-30 15:38 ` Alan Cox
2007-12-30 16:01 ` Ingo Molnar
2007-12-30 16:48 ` Alan Cox
2007-12-30 17:08 ` Ingo Molnar
2007-12-30 18:14 ` Rene Herman
2007-12-30 18:39 ` Alan Cox
2007-12-30 19:33 ` Rene Herman
2007-12-30 20:00 ` Linus Torvalds
2007-12-30 20:09 ` Rene Herman
2007-12-30 21:20 ` David P. Reed
2007-12-30 21:36 ` Alan Cox
2007-12-30 23:14 ` David P. Reed
2007-12-31 0:23 ` H. Peter Anvin
2007-12-31 11:59 ` Alan Cox
2007-12-31 18:19 ` H. Peter Anvin
2007-12-31 12:23 ` Alan Cox
2007-12-31 14:35 ` Rene Herman
2007-12-31 15:56 ` Alan Cox
2007-12-31 20:22 ` Ondrej Zary
2007-12-31 21:25 ` Alan Cox
2007-12-31 21:47 ` H. Peter Anvin
2007-12-31 23:24 ` Alan Cox
2007-12-31 23:41 ` H. Peter Anvin
2008-01-02 3:01 ` Rene Herman
2007-12-30 17:10 ` Juergen Beisert
2007-12-30 20:50 ` H. Peter Anvin
2007-12-31 1:03 ` David P. Reed
2007-12-31 1:40 ` H. Peter Anvin
2007-12-30 15:47 ` Rene Herman
2007-12-30 16:07 ` Ingo Molnar
2007-12-30 16:27 ` Rene Herman
2007-12-30 17:06 ` Ingo Molnar
2007-12-30 17:54 ` Rene Herman
2007-12-30 18:29 ` Alan Cox
2007-12-30 18:43 ` Andi Kleen
2007-12-30 20:46 ` Ingo Molnar
2007-12-30 21:07 ` Rene Herman
2007-12-30 21:25 ` Ingo Molnar
2007-12-30 21:29 ` Alan Cox
2007-12-30 22:03 ` Ingo Molnar
2007-12-31 13:11 ` Pavel Machek
2008-01-01 16:48 ` Ingo Molnar
2007-12-30 18:40 ` Linus Torvalds
2007-12-30 20:34 ` Ingo Molnar
2007-12-30 21:28 ` Alan Cox
2007-12-30 21:54 ` Ingo Molnar
2007-12-30 21:13 ` Alan Cox
2007-12-31 15:29 ` Christer Weinigel
2007-12-31 13:21 ` Pavel Machek
2007-12-31 12:29 ` Alan Cox
[not found] <9FXbU-3M4-11@gated-at.bofh.it>
[not found] ` <9G2Om-4hg-1@gated-at.bofh.it>
[not found] ` <9G7O3-3O2-7@gated-at.bofh.it>
[not found] ` <9G8qN-4TX-13@gated-at.bofh.it>
2007-12-30 17:50 ` Bodo Eggert
2007-12-30 18:10 ` Ingo Molnar
2007-12-30 20:56 ` H. Peter Anvin
2007-12-30 21:00 ` Ingo Molnar
2007-12-30 21:32 ` Bodo Eggert
2007-12-30 21:33 ` Alan Cox
2007-12-30 22:02 ` Ingo Molnar
2007-12-30 21:44 ` H. Peter Anvin
2007-12-30 21:58 ` Rene Herman
2007-12-30 20:53 ` H. Peter Anvin
2007-12-30 21:31 ` Alan Cox
2007-12-31 14:39 ` Bodo Eggert
2007-12-31 15:56 ` Alan Cox
[not found] <fa.PuxU73ceCfHAUeWLO4W21Zbrm7A@ifi.uio.no>
[not found] ` <fa.ipKZdmvkNYmQ40C0cO+2u3eYohw@ifi.uio.no>
[not found] ` <fa.ppsa4qOLo1V8UlDNTucnaqIJmKA@ifi.uio.no>
[not found] ` <fa.3IG7z0AfHuLo9eQjn7Gkl/+/lnA@ifi.uio.no>
[not found] ` <fa.slc2tTnUBrTGO2aTi/C5UGHEEEM@ifi.uio.no>
[not found] ` <fa.8g+KfLLge6wS5cEnKhZJmdkIVAI@ifi.uio.no>
2007-12-30 18:22 ` Robert Hancock
[not found] ` <fa.XY5q1SY4QX+yjnE6p8T3kbTt/8I@ifi.uio.no>
[not found] ` <fa.KEBfnq5vGkAJSEhZSx7+yy+Hdbs@ifi.uio.no>
[not found] ` <fa.MLKgXLxgzIKzm4bQXjEOqg9oDwU@ifi.uio.no>
[not found] ` <fa.KbCnGLPlUEYe/Ibajd+hTY7A7Qw@ifi.uio.no>
2007-12-31 18:21 ` Robert Hancock
[not found] <9BdU5-1YW-9@gated-at.bofh.it>
[not found] ` <9BeZN-3Gf-5@gated-at.bofh.it>
[not found] ` <9BnTB-1As-31@gated-at.bofh.it>
[not found] ` <9BrX4-8go-1@gated-at.bofh.it>
[not found] ` <9BuBG-4eR-51@gated-at.bofh.it>
[not found] ` <9BvRd-6aL-71@gated-at.bofh.it>
[not found] ` <9GRQW-1DX-13@gated-at.bofh.it>
[not found] ` <9GSah-23W-1@gated-at.bofh.it>
[not found] ` <9GSDy-2GD-23@gated-at.bofh.it>
[not found] ` <9GTpK-40d-15@gated-at.bofh.it>
[not found] ` <9GUvy-5H2-11@gated-at.bofh.it>
[not found] ` <9GVKU-7SS-25@gated-at.bofh.it>
2008-01-07 19:38 ` Bodo Eggert
2008-01-07 19:46 ` H. Peter Anvin
2008-01-07 22:02 ` Bodo Eggert
2008-01-07 22:10 ` H. Peter Anvin
2008-01-07 22:27 ` Bodo Eggert
2008-01-07 22:59 ` Rene Herman
2008-01-07 23:24 ` H. Peter Anvin
2008-01-07 23:26 ` Rene Herman
2008-01-08 0:10 ` [linux-kernel] " David P. Reed
2008-01-09 21:01 ` Matthieu castet
2008-01-08 12:51 ` Bodo Eggert
2008-01-08 14:09 ` Rene Herman
2008-01-08 14:31 ` Alan Cox
2008-01-07 23:25 ` Alan Cox
2008-01-08 13:17 ` Bodo Eggert
2008-01-08 14:38 ` Alan Cox
2008-01-08 3:15 ` Christer Weinigel
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