linux-kernel - Re: Linux 2.6.21-rc5

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Date:	Mon, 26 Mar 2007 14:30:02 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Bob Tracy <rct@...rkin.frus.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	johnstul@...ibm.com
Subject: Re: Linux 2.6.21-rc5

On Mon, 2007-03-26 at 07:25 -0500, Bob Tracy wrote:
> Thomas Gleixner wrote:
> > This fix from John Stultz is still missing:
> > 
> > http://lkml.org/lkml/2007/3/22/287
> > 
> > It's in Andrews queue already and waits to be sent to you.
> 
> In summary, that fix is a workaround to allow the acpi_pm clocksource
> to be selected instead of the pit clocksource, thereby allowing my
> Dell laptop with the PIIX4 bug to boot.  Other apic, clocksource, etc.
> patches that were included in -rc5 fixed the problem that caused the
> boot process to hang when the pit clocksource was selected, as I
> suspected would be the case :-).

Ah. Ok

> Per John's message in the above URL, while the fix is no longer needed
> for allowing the laptop to boot, it's probably still "a good thing" to
> allow a better clocksource to be selected.

Yes. The read three times pmtimer is faster and more reliable than the
PIT.

	tglx



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