From: Matthew Garrett <mjg59@srcf.ucam.org> To: Jean Delvare <khali@linux-fr.org> Cc: Pavel Machek <pavel@ucw.cz>, 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: Fri, 2 Mar 2007 21:12:51 +0000 [thread overview] Message-ID: <20070302211251.GA10035@srcf.ucam.org> (raw) In-Reply-To: <20070302220454.a0c66d04.khali@linux-fr.org> On Fri, Mar 02, 2007 at 10:04:54PM +0100, Jean Delvare wrote: > On Fri, 2 Mar 2007 14:18:40 +0000, Matthew Garrett wrote: > > In theory I /think/ so, but it would probably end up being an > > overestimate of the coverage actually needed. Trapping at runtime is > > arguably more elegant? > > It might be more elegant but it won't work. We don't want to prevent > ACPI from accessing these I/O ports. If we need to choose only one > "driver" accessing the I/O port, it must be acpi, at leat for now, > despite the fact that acpi provides very weak hardware monitoring > capabilities compared to the specific drivers. Assuming arbitration of access, what's the problem with having two drivers accessing the same hardware? Do these chips generally have any significant internal state other than trip points and the like? > 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. -- Matthew Garrett | mjg59@srcf.ucam.org
WARNING: multiple messages have this Message-ID (diff)
From: mjg59@srcf.ucam.org (Matthew Garrett) To: Jean Delvare <khali@linux-fr.org> Cc: Pavel Machek <pavel@ucw.cz>, 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: Fri, 02 Mar 2007 21:12:51 +0000 [thread overview] Message-ID: <20070302211251.GA10035@srcf.ucam.org> (raw) In-Reply-To: <20070302220454.a0c66d04.khali@linux-fr.org> On Fri, Mar 02, 2007 at 10:04:54PM +0100, Jean Delvare wrote: > On Fri, 2 Mar 2007 14:18:40 +0000, Matthew Garrett wrote: > > In theory I /think/ so, but it would probably end up being an > > overestimate of the coverage actually needed. Trapping at runtime is > > arguably more elegant? > > It might be more elegant but it won't work. We don't want to prevent > ACPI from accessing these I/O ports. If we need to choose only one > "driver" accessing the I/O port, it must be acpi, at leat for now, > despite the fact that acpi provides very weak hardware monitoring > capabilities compared to the specific drivers. Assuming arbitration of access, what's the problem with having two drivers accessing the same hardware? Do these chips generally have any significant internal state other than trip points and the like? > 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. -- Matthew Garrett | mjg59 at srcf.ucam.org
next prev parent reply other threads:[~2007-03-02 21:12 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 ` [lm-sensors] " Moore, Robert 2007-04-02 20:55 ` Moore, Robert 2007-04-03 7:21 ` Jean Delvare 2007-04-03 7:21 ` [lm-sensors] " Jean Delvare 2007-04-03 7:21 ` Jean Delvare 2007-04-04 21:35 ` Moore, Robert 2007-04-04 21:35 ` [lm-sensors] " Moore, Robert 2007-04-04 21:35 ` Moore, Robert 2007-03-02 14:10 ` [lm-sensors] " 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 [this message] 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 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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