From: Pavel Machek <pavel@ucw.cz>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>,
Linus Torvalds <torvalds@linux-foundation.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Nick Piggin <nickpiggin@yahoo.com.au>,
Mingming Cao <cmm@us.ibm.com>, Adrian Bunk <bunk@stusta.de>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Michal Piotrowski <michal.k.k.piotrowski@gmail.com>,
Mariusz Kozlowski <m.kozlowski@tuxland.pl>,
Oliver Pinter <oliver.pntr@gmail.com>,
Sid Boyce <g3vbv@blueyonder.co.uk>, Nick Piggin <npiggin@suse.de>,
Jens Axboe <jens.axboe@oracle.com>,
Thomas Renninger <trenn@suse.de>, Len Brown <len.brown@intel.com>
Subject: Re: [PATCH] i386: add command line option "local_apic_timer_c2_ok"
Date: Mon, 26 Mar 2007 12:31:42 +0000 [thread overview]
Message-ID: <20070326123141.GA11288@ucw.cz> (raw)
In-Reply-To: <1174662481.10840.292.camel@localhost.localdomain>
Hi!
> It turned out that it is almost impossible to trust ACPI, BIOS & Co.
> regarding the C states. This was the reason to switch the local apic
> timer off in C2 state already. OTOH there are sane and well behaving
> systems, which get punished by that decision.
>
> Allow the user to confirm that the local apic timer is trustworthy in C2
> state. This keeps the default behaviour on the safe side.
...
> @@ -780,6 +780,9 @@ and is between 256 and 4096 characters. It is defined in the file
> lapic [IA-32,APIC] Enable the local APIC even if BIOS
> disabled it.
>
> + lapic_timer_c2_ok [IA-32,APIC] trust the local apic timer in
> + C2 power state.
> +
Could you add comment saying that this is always ok on non-broken
systems? That way perhaps it can be added to linux-firmware-test-cd,
etc.
--
(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:[~2007-03-26 12:31 UTC|newest]
Thread overview: 301+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-16 16:33 Linux 2.6.21-rc4 Linus Torvalds
2007-03-16 17:01 ` Takashi Iwai
2007-03-16 17:44 ` Michal Piotrowski
2007-03-16 18:26 ` Andrew Morton
2007-03-16 18:55 ` Michal Piotrowski
2007-03-16 23:23 ` Jan Engelhardt
2007-03-16 23:31 ` Michal Piotrowski
2007-03-17 8:19 ` Mariusz Kozlowski
2007-03-16 18:54 ` Takashi Iwai
2007-03-16 19:03 ` Michal Piotrowski
2007-03-17 23:46 ` Adrian Bunk
2007-03-18 13:04 ` Michal Piotrowski
2007-03-16 20:34 ` Rafael J. Wysocki
2007-03-16 20:47 ` Thomas Gleixner
2007-03-16 23:25 ` [PATCH] clockevents: Fix suspend/resume to disk hangs Thomas Gleixner
2007-03-17 9:35 ` Milan Broz
2007-03-17 10:07 ` Thomas Meyer
2007-03-17 21:47 ` Rafael J. Wysocki
2007-03-18 17:58 ` Adrian Bunk
2007-03-18 0:42 ` appletouch quirk doesn't run at resume Adrian Bunk
2007-03-18 18:45 ` Jiri Kosina
2007-03-18 19:01 ` Thomas Meyer
2007-03-18 19:22 ` Jiri Kosina
2007-03-27 21:02 ` Thomas Meyer
2007-03-28 12:26 ` Jiri Kosina
2007-03-28 13:24 ` Dmitry Torokhov
2007-03-28 16:51 ` Thomas Meyer
2007-03-28 17:06 ` Jiri Kosina
2007-03-28 17:35 ` Dmitry Torokhov
2007-03-20 9:35 ` [PATCH] clockevents: Fix suspend/resume to disk hangs Marcus Better
2007-03-21 14:04 ` Thomas Gleixner
2007-03-22 10:34 ` Marcus Better
2007-03-23 9:14 ` Marcus Better
2007-03-23 10:05 ` Tino Keitel
2007-03-23 13:47 ` Rafael J. Wysocki
2007-03-23 14:36 ` Marcus Better
2007-03-16 21:11 ` Linux 2.6.21-rc4 Randy Dunlap
2007-03-16 22:39 ` Randy Dunlap
2007-03-16 23:13 ` Chris Friesen
2007-03-16 23:27 ` Jan Engelhardt
2007-03-17 6:43 ` Sam Ravnborg
2007-03-18 12:39 ` Sam Ravnborg
2007-03-19 4:16 ` Randy Dunlap
2007-03-18 18:49 ` [1/6] 2.6.21-rc4: known regressions Adrian Bunk
2007-03-20 10:24 ` Tobias Diedrich
2007-03-20 11:14 ` Adrian Bunk
2007-03-22 3:45 ` Linus Torvalds
2007-03-22 4:18 ` Nick Piggin
2007-03-22 15:21 ` Linus Torvalds
2007-03-23 1:08 ` Mingming Cao
2007-03-23 1:40 ` Linus Torvalds
2007-03-23 2:11 ` Nick Piggin
2007-03-23 7:51 ` Michal Piotrowski
2007-03-23 9:37 ` Nick Piggin
2007-03-23 17:19 ` Adrian Bunk
2007-03-23 12:01 ` [patch] hrtimers debug patch Ingo Molnar
[not found] ` <4607BDD9.1010002@googlemail.com>
[not found] ` <6bffcb0e0703260720i37bbb956o3d20019fe4ac9879@mail.gmail.com>
2007-03-26 14:33 ` Thomas Gleixner
2007-03-26 14:42 ` Michal Piotrowski
2007-03-26 15:07 ` Michal Piotrowski
2007-03-26 17:02 ` Ingo Molnar
2007-03-26 17:50 ` Michal Piotrowski
2007-04-06 15:27 ` Michal Piotrowski
2007-04-06 16:39 ` Ingo Molnar
2007-03-23 11:42 ` [1/6] 2.6.21-rc4: known regressions Ingo Molnar
2007-03-23 11:56 ` Thomas Gleixner
2007-03-23 15:08 ` [PATCH] i386: add command line option "local_apic_timer_c2_ok" Thomas Gleixner
2007-03-26 12:31 ` Pavel Machek [this message]
2007-03-26 13:52 ` Thomas Gleixner
2007-03-27 21:19 ` Len Brown
2007-03-27 21:34 ` Linus Torvalds
2007-03-27 22:16 ` Len Brown
2007-03-28 2:18 ` Len Brown
2007-03-29 14:15 ` Andi Kleen
2007-03-29 14:53 ` Langsdorf, Mark
2007-03-29 16:50 ` Andi Kleen
2007-03-29 20:02 ` Mark Langsdorf
2007-03-29 20:49 ` Andi Kleen
2007-03-29 21:16 ` Linus Torvalds
2007-03-29 21:45 ` Andreas Mohr
2007-03-29 21:56 ` Linus Torvalds
2007-03-29 22:06 ` Andi Kleen
2007-03-29 22:05 ` Andi Kleen
2007-03-30 21:06 ` Grzegorz Chwesewicz
2007-03-31 7:47 ` Grzegorz Chwesewicz
2007-03-29 21:43 ` Grzegorz Chwesewicz
2007-03-29 21:55 ` Grzegorz Chwesewicz
2007-03-29 14:19 ` Andi Kleen
2007-03-23 18:13 ` [1/6] 2.6.21-rc4: known regressions Linus Torvalds
2007-03-23 18:16 ` Linus Torvalds
2007-03-23 18:28 ` Linus Torvalds
2007-03-23 18:43 ` Thomas Gleixner
2007-03-23 12:27 ` Ingo Molnar
2007-03-22 18:24 ` Mariusz Kozłowski
2007-03-18 18:49 ` [2/6] " Adrian Bunk
2007-03-18 18:49 ` Adrian Bunk
2007-03-18 19:25 ` Andi Kleen
2007-03-19 16:06 ` Randy Dunlap
2007-03-19 16:15 ` Adrian Bunk
2007-03-19 17:07 ` Randy Dunlap
2007-03-20 15:32 ` Ray Lee
2007-03-18 18:49 ` [3/6] " Adrian Bunk
2007-03-18 18:49 ` Adrian Bunk
2007-03-18 19:38 ` Marcus Better
2007-03-26 1:25 ` Jeff Chua
2007-03-26 4:05 ` Adrian Bunk
2007-03-26 5:37 ` Jeff Chua
2007-03-26 16:26 ` Thomas Gleixner
2007-03-26 17:46 ` Jeff Chua
2007-03-28 7:04 ` Thomas Gleixner
2007-03-28 13:43 ` Maxim
2007-03-28 14:41 ` Ingo Molnar
2007-03-28 14:41 ` Ingo Molnar
2007-03-28 15:01 ` Maxim
2007-03-28 16:38 ` Linus Torvalds
2007-03-28 16:38 ` Linus Torvalds
2007-03-28 19:38 ` David Brownell
2007-03-28 19:38 ` [linux-pm] " David Brownell
2007-03-28 20:19 ` Maxim
2007-03-28 20:59 ` David Brownell
2007-03-28 21:27 ` Maxim
2007-03-29 22:33 ` David Brownell
2007-03-29 23:29 ` Maxim Levitsky
2007-03-29 23:29 ` [linux-pm] " Maxim Levitsky
2007-03-30 0:09 ` David Brownell
2007-03-30 0:09 ` [linux-pm] " David Brownell
2007-03-30 0:48 ` Maxim Levitsky
2007-03-30 0:48 ` [linux-pm] " Maxim Levitsky
2007-03-29 22:33 ` David Brownell
2007-03-28 20:42 ` Linus Torvalds
2007-03-28 20:42 ` [linux-pm] " Linus Torvalds
2007-03-28 21:17 ` David Brownell
2007-03-28 22:26 ` Maxim
2007-03-29 4:41 ` [ PATCH] Add suspend/resume for HPET was: " Maxim
2007-03-29 5:08 ` Linus Torvalds
2007-03-29 5:08 ` Linus Torvalds
2007-03-29 5:47 ` Maxim
2007-03-29 13:20 ` Sergei Shtylyov
2007-03-29 13:20 ` Sergei Shtylyov
2007-03-29 13:31 ` Maxim
2007-03-29 13:46 ` [PATCH v2] Add suspend/resume for HPET Maxim Levitsky
2007-03-29 13:46 ` Maxim Levitsky
2007-03-29 16:53 ` Linus Torvalds
2007-03-29 16:53 ` Linus Torvalds
2007-03-29 17:28 ` Maxim Levitsky
2007-03-29 17:51 ` Ingo Molnar
2007-03-29 17:51 ` Ingo Molnar
2007-03-29 20:46 ` Andi Kleen
2007-03-29 20:46 ` Andi Kleen
2007-03-29 18:11 ` Jeff Chua
2007-03-31 15:51 ` Thomas Gleixner
2007-03-31 15:51 ` Thomas Gleixner
2007-03-31 16:01 ` Jeff Chua
2007-03-31 16:01 ` Jeff Chua
2007-03-31 16:09 ` Thomas Gleixner
2007-03-31 16:09 ` Linus Torvalds
2007-03-31 16:09 ` Linus Torvalds
2007-03-31 16:33 ` Thomas Gleixner
2007-03-31 16:41 ` Greg KH
2007-03-31 16:53 ` Linus Torvalds
2007-03-31 16:53 ` Linus Torvalds
2007-03-31 17:02 ` Ingo Molnar
2007-03-31 17:02 ` Ingo Molnar
2007-03-31 18:18 ` [linux-pm] " David Brownell
2007-03-31 19:32 ` David Brownell
2007-03-31 19:32 ` [linux-pm] " David Brownell
2007-04-01 3:13 ` Jeff Chua
2007-04-01 3:13 ` [linux-pm] " Jeff Chua
2007-04-01 4:13 ` David Brownell
2007-04-01 4:13 ` [linux-pm] " David Brownell
2007-03-31 18:18 ` David Brownell
2007-03-31 17:08 ` Greg KH
2007-03-31 17:55 ` [linux-pm] " David Brownell
2007-03-31 17:55 ` David Brownell
2007-03-31 16:56 ` Maxim Levitsky
2007-03-31 17:09 ` Linus Torvalds
2007-03-31 17:09 ` Linus Torvalds
2007-03-31 17:17 ` Ingo Molnar
2007-03-31 17:17 ` Ingo Molnar
2007-03-31 17:58 ` Daniel Walker
2007-03-29 16:35 ` [ PATCH] Add suspend/resume for HPET was: Re: [3/6] 2.6.21-rc4: known regressions Linus Torvalds
2007-03-29 16:35 ` Linus Torvalds
2007-03-29 16:51 ` Maxim Levitsky
2007-03-29 16:51 ` Maxim Levitsky
2007-03-29 17:22 ` Linus Torvalds
2007-03-29 17:22 ` Linus Torvalds
2007-03-29 17:47 ` [patch, v2] add suspend/resume for HPET Ingo Molnar
2007-03-29 17:47 ` Ingo Molnar
2007-03-28 18:04 ` [3/6] 2.6.21-rc4: known regressions Michael S. Tsirkin
2007-03-28 18:32 ` Ingo Molnar
2007-03-28 18:32 ` Ingo Molnar
2007-03-28 18:35 ` Randy Dunlap
2007-03-28 18:35 ` Randy Dunlap
2007-03-29 14:24 ` Jeff Chua
2007-03-18 18:49 ` [4/6] " Adrian Bunk
2007-03-18 18:49 ` Adrian Bunk
2007-03-18 18:49 ` [5/6] " Adrian Bunk
2007-03-18 19:07 ` Maxim
2007-03-18 19:22 ` Adrian Bunk
2007-03-18 19:59 ` Maxim
2007-03-18 20:03 ` Maxim
2007-03-18 18:49 ` [6/6] " Adrian Bunk
2007-03-20 2:38 ` David Miller
2007-03-24 19:50 ` David Miller
2007-03-19 20:39 ` 2.6.21-rc4: known regressions with patches available Adrian Bunk
2007-03-19 20:39 ` Adrian Bunk
2007-03-20 11:02 ` [Alsa-devel] " Takashi Iwai
2007-03-19 20:39 ` Adrian Bunk
2007-03-23 18:48 ` [1/5] 2.6.21-rc4: known regressions (v2) Adrian Bunk
2007-03-25 4:45 ` David Miller
2007-03-25 5:08 ` Paul Collins
2007-03-25 12:22 ` Adrian Bunk
2007-03-23 18:48 ` [2/5] " Adrian Bunk
2007-03-23 21:08 ` Thomas Gleixner
2007-03-24 0:14 ` Ray Lee
2007-03-24 6:40 ` Thomas Gleixner
2007-03-24 18:17 ` Ray Lee
2007-03-24 19:11 ` [PATCH] x86_64: avoid sending LOCAL_TIMER_VECTOR IPI to itself Ingo Molnar
2007-03-25 19:24 ` Ray Lee
2007-03-26 10:01 ` [2/5] 2.6.21-rc4: known regressions (v2) Tejun Heo
2007-03-23 18:50 ` [3/5] " Adrian Bunk
2007-03-23 18:50 ` Adrian Bunk
2007-03-23 19:07 ` Maxim
2007-03-23 19:07 ` Maxim
2007-03-23 20:53 ` Rafael J. Wysocki
2007-03-23 20:53 ` Rafael J. Wysocki
2007-03-24 17:04 ` Thomas Meyer
2007-03-24 18:02 ` Eric W. Biederman
2007-03-24 18:20 ` Thomas Meyer
2007-03-24 18:47 ` Eric W. Biederman
2007-03-24 20:34 ` Thomas Meyer
2007-03-25 3:39 ` Eric W. Biederman
2007-03-25 11:41 ` Thomas Meyer
2007-03-25 12:03 ` Eric W. Biederman
2007-03-25 12:28 ` Rafael J. Wysocki
2007-03-25 12:56 ` Eric W. Biederman
2007-03-25 19:14 ` Rafael J. Wysocki
2007-03-25 20:37 ` Eric W. Biederman
2007-03-26 21:03 ` Rafael J. Wysocki
2007-03-25 14:17 ` Thomas Meyer
2007-03-25 18:56 ` Rafael J. Wysocki
2007-03-25 13:54 ` Thomas Meyer
2007-03-25 14:48 ` Adrian Bunk
2007-03-25 17:25 ` Thomas Meyer
2007-03-25 19:06 ` Rafael J. Wysocki
2007-03-25 19:31 ` Rafael J. Wysocki
2007-03-26 20:01 ` Luck, Tony
2007-03-27 3:29 ` Eric W. Biederman
2007-04-02 15:38 ` Bjorn Helgaas
2007-04-02 16:38 ` Bjorn Helgaas
2007-04-02 19:50 ` Eric W. Biederman
2007-03-25 21:34 ` Frédéric Riss
2007-03-26 6:45 ` Frédéric RISS
2007-03-26 9:14 ` Thomas Gleixner
2007-03-26 10:36 ` Frederic Riss
2007-03-26 18:53 ` Frédéric Riss
2007-03-26 19:02 ` Adrian Bunk
2007-03-26 19:39 ` Frederic Riss
2007-03-26 19:46 ` Adrian Bunk
2007-03-26 10:00 ` Marcus Better
2007-03-26 12:35 ` Pavel Machek
2007-03-26 14:11 ` Marcus Better
2007-03-26 14:34 ` Adrian Bunk
2007-03-26 17:42 ` Marcus Better
2007-03-26 18:48 ` Adrian Bunk
2007-03-26 18:48 ` Adrian Bunk
2007-03-27 9:42 ` Marcus Better
2007-03-23 18:50 ` [4/5] " Adrian Bunk
2007-03-23 19:15 ` Thomas Gleixner
2007-03-23 19:15 ` Adrian Bunk
2007-03-23 19:21 ` Thomas Gleixner
2007-03-23 22:23 ` Chuck Ebbert
2007-03-23 22:43 ` Thomas Gleixner
2007-03-23 23:35 ` Thomas Gleixner
2007-03-25 12:42 ` [PATCH] clocksource: Fix thinko in watchdog selection Thomas Gleixner
2007-03-23 23:00 ` [4/5] 2.6.21-rc4: known regressions (v2) Adrian Bunk
2007-03-23 23:05 ` Chuck Ebbert
2007-03-23 19:22 ` Thomas Gleixner
2007-03-24 13:47 ` Thomas Gleixner
2007-03-25 12:31 ` [PATCH] dynticks: fix hrtimer rounding error in next_timer_interrupt Thomas Gleixner
2007-03-23 19:49 ` [4/5] 2.6.21-rc4: known regressions (v2) Thomas Gleixner
[not found] ` <20070325071023.GL17532@mellanox.co.il>
2007-03-25 7:37 ` Thomas Gleixner
2007-03-25 8:57 ` Michael S. Tsirkin
2007-03-25 10:17 ` Thomas Gleixner
2007-03-25 10:15 ` Michael S. Tsirkin
2007-03-25 10:27 ` Thomas Gleixner
2007-03-25 10:25 ` Michael S. Tsirkin
2007-03-25 10:38 ` Thomas Gleixner
2007-03-25 11:16 ` Ingo Molnar
2007-03-25 12:09 ` Thomas Gleixner
2007-03-26 14:19 ` Michael S. Tsirkin
2007-03-23 20:00 ` Thomas Gleixner
2007-03-23 20:08 ` Thomas Gleixner
2007-03-24 13:59 ` Michal Piotrowski
2007-03-24 15:14 ` Thomas Gleixner
2007-03-24 16:13 ` Michal Piotrowski
2007-03-23 21:43 ` john stultz
2007-03-23 21:54 ` Linus Torvalds
2007-03-24 0:44 ` john stultz
2007-03-23 18:50 ` [5/5] " Adrian Bunk
2007-03-24 11:25 ` 2.6.21-rc4: known regressions with patches (v2) Adrian Bunk
2007-03-26 12:37 ` Bob Tracy
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