linux-kernel - Re: [PATCH] i386: add command line option "local_apic_timer_c2

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Date:	Mon, 26 Mar 2007 15:52:22 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Pavel Machek <pavel@....cz>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	Mingming Cao <cmm@...ibm.com>, Adrian Bunk <bunk@...sta.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	Mariusz Kozlowski <m.kozlowski@...land.pl>,
	Oliver Pinter <oliver.pntr@...il.com>,
	Sid Boyce <g3vbv@...eyonder.co.uk>,
	Nick Piggin <npiggin@...e.de>,
	Jens Axboe <jens.axboe@...cle.com>,
	Thomas Renninger <trenn@...e.de>,
	Len Brown <len.brown@...el.com>
Subject: Re: [PATCH] i386: add command line option "local_apic_timer_c2_ok"

On Mon, 2007-03-26 at 12:31 +0000, Pavel Machek wrote:
> > +	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.

Yep, post .21. 

I still twist my brain how to autodetect that in a safe way, which would
make it really useful for the firmware tester.

	tglx


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