From: "Maciej W. Rozycki" <macro@linux-mips.org>
To: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@elte.hu>,
Linus Torvalds <torvalds@linux-foundation.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Len Brown <lenb@kernel.org>,
Jason Vas Dias <jason.vas.dias@gmail.com>
Subject: Re: [PATCH] x86 ACPI: Blacklist two HP machines with buggy BIOSes (Re: 2.6.27-rc8+ - first impressions)
Date: Mon, 6 Oct 2008 22:39:25 +0100 (BST) [thread overview]
Message-ID: <alpine.LFD.1.10.0810062227100.10470@ftp.linux-mips.org> (raw)
In-Reply-To: <87tzbpmocm.fsf@basil.nowhere.org>
On Mon, 6 Oct 2008, Andi Kleen wrote:
> The real reason is actually a workaround in the BIOS for problems
> in the older Linux code that caused duplicated timer interrupts. The
> old Linux would fall into "enable both IO-APIC and 8259" fallback mode
> and the resulted in duplicated timer events, which made everything unhappy.
> They instead configured the northbridge in a way that one of the inputs
> is ignored.
Hmm, working around Linux problems in the BIOS is a new and truly odd
concept to me. It's not that we are unresponsive or do not take
responsibility for our bugs, is it?
> You won't be able to DMI list it, that workaround is widely used
> in lots of different systems.
Well, perhaps, but the thermal trip point phenomenon seems unique to this
family of systems. The other aspects of the problem do not really matter
anymore as we seem to have addressed them robustly enough now.
Maciej
next prev parent reply other threads:[~2008-10-06 21:39 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-05 18:36 2.6.27-rc8+ - first impressions Dmitry Torokhov
2008-10-05 18:59 ` Rafael J. Wysocki
2008-10-05 19:06 ` Dmitry Torokhov
2008-10-05 19:19 ` Rafael J. Wysocki
2008-10-05 19:27 ` Thomas Gleixner
2008-10-05 21:18 ` Dmitry Torokhov
2008-10-05 21:40 ` Parag Warudkar
2008-10-05 22:29 ` Rafael J. Wysocki
2008-10-06 6:23 ` Dmitry Torokhov
2008-10-06 9:59 ` [PATCH] x86 ACPI: Blacklist two HP machines with buggy BIOSes (Re: 2.6.27-rc8+ - first impressions) Rafael J. Wysocki
2008-10-06 14:54 ` Linus Torvalds
2008-10-06 15:00 ` Ingo Molnar
2008-10-06 17:17 ` Rafael J. Wysocki
2008-10-06 17:51 ` Maciej W. Rozycki
2008-10-06 17:54 ` Ingo Molnar
2008-10-06 20:59 ` Andi Kleen
2008-10-06 21:39 ` Maciej W. Rozycki [this message]
2008-10-06 22:11 ` [PATCH] x86: SB450: skip IRQ0 override if it is not routed to INT2 of IOAPIC Andreas Herrmann
2008-10-07 3:41 ` Ingo Molnar
2008-10-07 3:51 ` Dmitry Torokhov
2008-10-07 4:57 ` Ingo Molnar
2008-10-07 11:19 ` Dmitry Torokhov
2008-10-07 15:25 ` Maciej W. Rozycki
2008-10-07 20:31 ` Rafael J. Wysocki
2008-10-06 23:10 ` [PATCH] x86 ACPI: Blacklist two HP machines with buggy BIOSes (Re: 2.6.27-rc8+ - first impressions) Andi Kleen
2008-10-07 1:35 ` Maciej W. Rozycki
2008-10-07 4:42 ` Ingo Molnar
2008-10-07 5:38 ` Andi Kleen
2008-10-07 11:45 ` Matthew Garrett
2008-10-07 12:04 ` Ingo Molnar
2008-10-08 8:23 ` Peter Zijlstra
2008-10-06 17:15 ` Rafael J. Wysocki
2008-10-06 17:54 ` Maciej W. Rozycki
2008-10-05 19:10 ` 2.6.27-rc8+ - first impressions Arjan van de Ven
2008-10-06 6:28 ` Dmitry Torokhov
2008-10-06 19:53 ` Andreas Herrmann
2008-10-07 3:42 ` Dmitry Torokhov
2008-10-07 9:10 ` Andreas Herrmann
2008-10-07 11:37 ` Dmitry Torokhov
2008-10-07 12:07 ` Parag Warudkar
2008-10-08 1:07 ` Dmitry Torokhov
2008-10-07 13:19 ` Andreas Herrmann
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