From: Pavel Machek <pavel@ucw.cz>
To: Jean Delvare <khali@linux-fr.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>,
Chuck Ebbert <cebbert@redhat.com>,
Rudolf Marek <r.marek@assembler.cz>,
linux-acpi@vger.kernel.org,
linux-kernel <linux-kernel@vger.kernel.org>,
lm-sensors@lm-sensors.org
Subject: Re: [lm-sensors] Could the k8temp driver be interfering with ACPI?
Date: Mon, 5 Mar 2007 22:25:48 +0000 [thread overview]
Message-ID: <20070305222548.GA4946@ucw.cz> (raw)
In-Reply-To: <20070303105316.d51e032d.khali@linux-fr.org>
Hi!
> > > Why would we end up with an overestimation if we check the I/O ports at
> > > boot time? Do you have concrete cases in mind?
> >
> > ACPI will often describe large operation regions, but won't necessarily
> > touch all of them. Effectively, every codepath would have to be walked
> > through at boot time and checked for io access.
>
> Is there anything preventing us from doing such a walk and pre-allocate
> all the I/O ranges? I am not familiar with the ACPI code at all, would
> you possibly propose a patch doing that?
ACPI AML is probably turing-complete: I'm afraid you are trying to
solve the halting problem (-> impossible).
Pavel
>
> If we can't do that, the overestimation approach might still work. I
> wonder if it would cause problems in practice. If it does, we're back
> to Pavel's AML lock.
>
> --
> Jean Delvare
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
WARNING: multiple messages have this Message-ID (diff)
From: pavel@ucw.cz (Pavel Machek)
To: Jean Delvare <khali@linux-fr.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>,
Chuck Ebbert <cebbert@redhat.com>,
Rudolf Marek <r.marek@assembler.cz>,
linux-acpi@vger.kernel.org,
linux-kernel <linux-kernel@vger.kernel.org>,
lm-sensors@lm-sensors.org
Subject: [lm-sensors] Could the k8temp driver be interfering with ACPI?
Date: Mon, 05 Mar 2007 22:25:48 +0000 [thread overview]
Message-ID: <20070305222548.GA4946@ucw.cz> (raw)
In-Reply-To: <20070303105316.d51e032d.khali@linux-fr.org>
Hi!
> > > Why would we end up with an overestimation if we check the I/O ports at
> > > boot time? Do you have concrete cases in mind?
> >
> > ACPI will often describe large operation regions, but won't necessarily
> > touch all of them. Effectively, every codepath would have to be walked
> > through at boot time and checked for io access.
>
> Is there anything preventing us from doing such a walk and pre-allocate
> all the I/O ranges? I am not familiar with the ACPI code at all, would
> you possibly propose a patch doing that?
ACPI AML is probably turing-complete: I'm afraid you are trying to
solve the halting problem (-> impossible).
Pavel
>
> If we can't do that, the overestimation approach might still work. I
> wonder if it would cause problems in practice. If it does, we're back
> to Pavel's AML lock.
>
> --
> Jean Delvare
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2007-03-05 22:25 UTC|newest]
Thread overview: 220+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-16 17:31 Could the k8temp driver be interfering with ACPI? Chuck Ebbert
2007-02-16 17:31 ` [lm-sensors] " Chuck Ebbert
2007-02-16 17:57 ` Len Brown
2007-02-16 17:57 ` [lm-sensors] " Len Brown
2007-02-16 18:14 ` Chuck Ebbert
2007-02-16 18:14 ` [lm-sensors] " Chuck Ebbert
2007-02-16 19:59 ` Andi Kleen
2007-02-16 19:59 ` [lm-sensors] " Andi Kleen
2007-02-16 19:31 ` Chuck Ebbert
2007-02-16 19:31 ` [lm-sensors] " Chuck Ebbert
2007-02-18 17:32 ` Jean Delvare
2007-02-18 17:32 ` Jean Delvare
2007-02-18 23:22 ` Andi Kleen
2007-02-18 23:22 ` Andi Kleen
2007-02-17 10:49 ` Rudolf Marek
2007-02-17 10:49 ` [lm-sensors] " Rudolf Marek
2007-02-17 10:49 ` Rudolf Marek
2007-02-17 18:14 ` Chuck Ebbert
2007-02-17 18:14 ` Chuck Ebbert
2007-02-18 17:38 ` Jean Delvare
2007-02-18 17:38 ` Jean Delvare
2007-02-20 15:18 ` Matthew Garrett
2007-02-20 15:18 ` Matthew Garrett
2007-02-20 15:33 ` Luca Tettamanti
2007-02-20 15:33 ` Luca Tettamanti
2007-02-21 14:59 ` Jean Delvare
2007-02-21 14:59 ` Jean Delvare
2007-02-21 15:07 ` Jean Delvare
2007-02-21 15:07 ` Jean Delvare
2007-02-28 21:38 ` Pavel Machek
2007-02-28 21:38 ` Pavel Machek
2007-03-01 14:26 ` Jean Delvare
2007-03-01 14:26 ` [lm-sensors] " Jean Delvare
2007-03-01 14:26 ` Jean Delvare
2007-03-01 17:48 ` Dave Jones
2007-03-01 17:48 ` Dave Jones
2007-03-02 11:27 ` Jean Delvare
2007-03-02 11:27 ` Jean Delvare
2007-03-02 11:31 ` Pavel Machek
2007-03-02 11:31 ` Pavel Machek
2007-03-02 13:37 ` Jean Delvare
2007-03-02 13:37 ` Jean Delvare
2007-03-02 13:47 ` Henrique de Moraes Holschuh
2007-03-02 13:47 ` Henrique de Moraes Holschuh
2007-03-02 13:57 ` Pavel Machek
2007-03-02 13:57 ` Pavel Machek
2007-03-03 6:44 ` Jean Delvare
2007-03-03 6:44 ` Jean Delvare
2007-03-02 11:40 ` Pavel Machek
2007-03-02 11:40 ` Pavel Machek
2007-03-02 11:47 ` Matthew Garrett
2007-03-02 11:47 ` Matthew Garrett
2007-03-02 13:58 ` Pavel Machek
2007-03-02 13:58 ` Pavel Machek
2007-03-02 21:00 ` Jean Delvare
2007-03-02 21:00 ` Jean Delvare
2007-03-02 21:22 ` Henrique de Moraes Holschuh
2007-03-02 21:22 ` Henrique de Moraes Holschuh
2007-04-01 15:39 ` Pavel Machek
2007-04-01 15:39 ` Pavel Machek
2007-04-02 15:48 ` Jean Delvare
2007-04-02 15:48 ` [lm-sensors] " Jean Delvare
2007-04-02 19:22 ` Dave Jones
2007-04-02 19:22 ` [lm-sensors] " Dave Jones
2007-04-03 5:49 ` Jean Delvare
2007-04-03 5:49 ` [lm-sensors] " Jean Delvare
2007-04-02 20:55 ` Moore, Robert
2007-04-02 20:55 ` Moore, Robert
2007-04-02 20:55 ` [lm-sensors] " Moore, Robert
2007-04-03 7:21 ` Jean Delvare
2007-04-03 7:21 ` Jean Delvare
2007-04-03 7:21 ` [lm-sensors] " Jean Delvare
2007-04-04 21:35 ` Moore, Robert
2007-04-04 21:35 ` Moore, Robert
2007-04-04 21:35 ` [lm-sensors] " Moore, Robert
2007-03-02 14:10 ` Jean Delvare
2007-03-02 14:10 ` Jean Delvare
2007-03-02 14:18 ` Matthew Garrett
2007-03-02 14:18 ` Matthew Garrett
2007-03-02 21:04 ` Jean Delvare
2007-03-02 21:04 ` Jean Delvare
2007-03-02 21:12 ` Matthew Garrett
2007-03-02 21:12 ` Matthew Garrett
2007-03-03 9:53 ` Jean Delvare
2007-03-03 9:53 ` Jean Delvare
2007-03-03 15:47 ` David Hubbard
2007-03-03 15:47 ` David Hubbard
2007-03-03 15:50 ` Matthew Garrett
2007-03-03 15:50 ` Matthew Garrett
2007-03-03 17:08 ` Rudolf Marek
2007-03-03 17:08 ` Rudolf Marek
2007-03-04 17:29 ` Rudolf Marek
2007-03-04 17:29 ` Rudolf Marek
2007-03-05 21:16 ` Jean Delvare
2007-03-05 21:16 ` Jean Delvare
2007-03-05 21:35 ` David Hubbard
2007-03-05 21:35 ` David Hubbard
2007-03-06 15:10 ` Jean Delvare
2007-03-06 15:10 ` Jean Delvare
2007-03-04 10:54 ` Jean Delvare
2007-03-04 10:54 ` Jean Delvare
2007-03-05 22:25 ` Pavel Machek [this message]
2007-03-05 22:25 ` Pavel Machek
2007-03-06 7:55 ` Benny Amorsen
2007-03-06 7:55 ` Benny Amorsen
2007-03-06 15:26 ` Jean Delvare
2007-03-06 15:26 ` Jean Delvare
2007-03-06 20:07 ` Stefan Monnier
2007-03-06 20:07 ` Stefan Monnier
2007-03-06 20:07 ` Stefan Monnier
2007-03-06 21:20 ` Pavel Machek
2007-03-06 21:20 ` Pavel Machek
2007-03-06 21:25 ` Moore, Robert
2007-03-06 21:25 ` Moore, Robert
2007-03-06 21:25 ` Moore, Robert
2007-03-18 19:36 ` richardvoigt
2007-03-18 19:36 ` richardvoigt at gmail.com
2007-03-19 7:08 ` Jean Delvare
2007-03-19 7:08 ` Jean Delvare
2007-03-02 22:07 ` Moore, Robert
2007-03-02 22:07 ` Moore, Robert
2007-03-02 22:07 ` Moore, Robert
2007-03-09 7:18 ` Pavel Machek
2007-03-09 7:18 ` Pavel Machek
2007-03-09 10:24 ` Jean Delvare
2007-03-09 10:24 ` Jean Delvare
2007-03-09 10:39 ` Alexey Starikovskiy
2007-03-09 10:39 ` Alexey Starikovskiy
2007-03-09 11:21 ` Pavel Machek
2007-03-09 11:21 ` Pavel Machek
2007-03-09 17:23 ` Jean Delvare
2007-03-09 17:23 ` Jean Delvare
2007-03-09 17:35 ` Alexey Starikovskiy
2007-03-09 17:35 ` Alexey Starikovskiy
2007-03-09 21:03 ` Moore, Robert
2007-03-09 21:03 ` Moore, Robert
2007-03-09 21:03 ` Moore, Robert
2007-03-09 20:56 ` Moore, Robert
2007-03-09 20:56 ` Moore, Robert
2007-03-09 20:56 ` Moore, Robert
2007-03-02 14:22 ` Pavel Machek
2007-03-02 14:22 ` Pavel Machek
2007-03-02 14:03 ` Jean Delvare
2007-03-02 14:03 ` Jean Delvare
2007-03-02 14:24 ` Pavel Machek
2007-03-02 14:24 ` Pavel Machek
2007-03-02 14:57 ` Matthew Garrett
2007-03-02 14:57 ` Matthew Garrett
2007-03-02 21:41 ` Jean Delvare
2007-03-02 21:41 ` Jean Delvare
2007-03-02 21:46 ` Matthew Garrett
2007-03-02 21:46 ` Matthew Garrett
2007-03-06 21:28 ` Jean Delvare
2007-03-06 21:28 ` Jean Delvare
2007-04-13 18:18 ` Bjorn Helgaas
2007-04-13 18:18 ` Bjorn Helgaas
2007-04-13 20:07 ` Pavel Machek
2007-04-13 20:07 ` Pavel Machek
2007-04-13 20:59 ` Bjorn Helgaas
2007-04-13 20:59 ` Bjorn Helgaas
2007-04-15 9:41 ` Jean Delvare
2007-04-15 9:41 ` Jean Delvare
2007-04-15 20:31 ` Bjorn Helgaas
2007-04-15 20:31 ` Bjorn Helgaas
2007-04-15 20:59 ` Luca Tettamanti
2007-04-15 20:59 ` Luca Tettamanti
2007-04-16 0:57 ` Bjorn Helgaas
2007-04-16 0:57 ` Bjorn Helgaas
2007-04-16 21:14 ` Luca Tettamanti
2007-04-16 21:14 ` Luca Tettamanti
2007-04-16 22:28 ` Bjorn Helgaas
2007-04-16 22:28 ` Bjorn Helgaas
2007-04-17 23:50 ` Luca Tettamanti
2007-04-17 23:50 ` Luca Tettamanti
2007-04-22 16:55 ` Luca Tettamanti
2007-04-22 16:55 ` Luca Tettamanti
2007-04-17 10:03 ` Jean Delvare
2007-04-17 10:03 ` Jean Delvare
2007-02-18 22:43 ` Rudolf Marek
2007-02-18 22:43 ` Rudolf Marek
2007-02-20 15:08 ` Chuck Ebbert
2007-02-20 15:08 ` Chuck Ebbert
2007-02-20 19:11 ` Dave Jones
2007-02-20 19:11 ` Dave Jones
2007-02-21 16:17 ` Jean Delvare
2007-02-21 16:17 ` Jean Delvare
2007-02-21 17:37 ` Dave Jones
2007-02-21 17:37 ` Dave Jones
2007-02-21 20:19 ` Dave Jones
2007-02-21 20:19 ` Dave Jones
2007-02-22 16:37 ` Jean Delvare
2007-02-22 16:37 ` Jean Delvare
2007-02-23 7:13 ` Hans de Goede
2007-02-23 7:13 ` [lm-sensors] " Hans de Goede
2007-02-23 7:13 ` Hans de Goede
2007-02-23 7:47 ` Jean Delvare
2007-02-23 7:47 ` Jean Delvare
2007-02-21 14:54 ` Jean Delvare
2007-02-21 14:54 ` Jean Delvare
2007-02-21 16:03 ` Chuck Ebbert
2007-02-21 16:03 ` Chuck Ebbert
2007-02-21 16:22 ` Jean Delvare
2007-02-21 16:22 ` Jean Delvare
2007-02-23 8:08 ` Hans de Goede
2007-02-26 17:24 ` Jean Delvare
2007-02-26 19:03 ` Hans de Goede
2007-02-27 8:45 ` Jean Delvare
[not found] <7PvLN-1cj-3@gated-at.bofh.it>
[not found] ` <7TEGV-6Jy-39@gated-at.bofh.it>
[not found] ` <7TUBX-6TN-5@gated-at.bofh.it>
[not found] ` <7UeqX-4QO-17@gated-at.bofh.it>
[not found] ` <7UeqZ-4QO-27@gated-at.bofh.it>
[not found] ` <7UgM5-np-1@gated-at.bofh.it>
[not found] ` <7UgM8-np-11@gated-at.bofh.it>
[not found] ` <7UnaS-2xP-9@gated-at.bofh.it>
[not found] ` <7UnkC-2JB-9@gated-at.bofh.it>
[not found] ` <7Uzcd-49u-3@gated-at.bofh.it>
[not found] ` <7UEEN-4xi-3@gated-at.bofh.it>
2007-03-05 13:56 ` Bodo Eggert
2007-03-05 13:56 ` Bodo Eggert
2007-03-05 13:56 ` Bodo Eggert
2007-03-06 15:19 ` Jean Delvare
2007-03-06 15:19 ` Jean Delvare
2007-03-06 20:40 ` Bodo Eggert
2007-03-06 20:40 ` Bodo Eggert
2007-03-07 9:17 ` Jean Delvare
2007-03-07 9:17 ` Jean Delvare
2007-03-07 9:36 ` Pavel Machek
2007-03-07 9:36 ` Pavel Machek
2007-03-07 17:09 ` Bodo Eggert
2007-03-07 17:09 ` Bodo Eggert
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