From: Rene Herman <rene.herman@gmail.com>
To: "linux-os (Dick Johnson)" <linux-os@analogic.com>
Cc: "David P. Reed" <dpreed@reed.com>, Avi Kivity <avi@qumranet.com>,
Thomas Gleixner <tglx@linutronix.de>,
Linux kernel <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Pavel Machek <pavel@ucw.cz>,
kvm-devel <kvm-devel@lists.sourceforge.net>
Subject: Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.
Date: Mon, 17 Dec 2007 19:54:58 +0100 [thread overview]
Message-ID: <4766C602.5050409@keyaccess.nl> (raw)
In-Reply-To: <Pine.LNX.4.61.0712171307150.4584@chaos.analogic.com>
On 17-12-07 19:14, linux-os (Dick Johnson) wrote:
> Attached is a patch that changes the outs to ins on port 0x80.
No, that isn't useful. Only a write is "guaranteed" to make ISA/LPC meaning
the timing for a read varies wildly. See the in/out cycles results posted
earlier. Was also reading the Intel PIIX(3) chiset datasheet today which
specifically mentions that only writes flow through to ISA, reads do not.
Rene.
next prev parent reply other threads:[~2007-12-17 18:56 UTC|newest]
Thread overview: 184+ 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>
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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
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 [this message]
2007-12-19 15:03 ` Avi Kivity
[not found] <fa.SxdP/X04a85FM81xaEZMBrrv9i4@ifi.uio.no>
[not found] ` <fa.tplCM7jT7JqanJcCtGK76o+Mdsw@ifi.uio.no>
[not found] ` <fa.lWVoQaFEkNNX7F+8WUJpMQjIODE@ifi.uio.no>
[not found] ` <fa.ng4A2MLKS/VR9lS0zt0LDJIDwi0@ifi.uio.no>
[not found] ` <fa.yZlGBJmYGGt3AQuIiiu7uMT3W9w@ifi.uio.no>
[not found] ` <fa.RR732o3u5kvPHNspJA9tM1WHlKI@ifi.uio.no>
2007-12-17 0:53 ` Robert Hancock
[not found] <fa.F/CPALGk5eBe3QDRN7pjalMH5m4@ifi.uio.no>
[not found] ` <fa.56LRmmk2ZdofP2s+juNK5l0iREQ@ifi.uio.no>
[not found] ` <fa.FRcgZwrZusfLF5d88S6yPr2bvYo@ifi.uio.no>
[not found] ` <fa.eZe9IlwlTeEF/5eA+8kKfNUncS4@ifi.uio.no>
[not found] ` <fa.EBJleK5JYl+P/h3+2m6zPq3PzDc@ifi.uio.no>
[not found] ` <fa.jU9nntHcOIpTOJuwui+u+/gya4Y@ifi.uio.no>
2007-12-17 0:57 ` Robert Hancock
2007-12-17 15:27 ` Ingo Molnar
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