linux-kernel - Re: [4/5] 2.6.21-rc4: known regressions (v2)

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Message-ID: <20070325101548.GI24225@mellanox.co.il>
Date:	Sun, 25 Mar 2007 12:15:48 +0200
From:	"Michael S. Tsirkin" <mst@....mellanox.co.il>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	"Michael S. Tsirkin" <mst@....mellanox.co.il>,
	Adrian Bunk <bunk@...sta.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Soeren Sonnenburg <kernel@....de>, Ingo Molnar <mingo@...e.hu>,
	Tejun Heo <htejun@...il.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	John Stultz <johnstul@...ibm.com>
Subject: Re: [4/5] 2.6.21-rc4: known regressions (v2)

> Quoting Thomas Gleixner <tglx@...utronix.de>:
> Subject: Re: [4/5] 2.6.21-rc4: known regressions (v2)
> 
> On Sun, 2007-03-25 at 10:57 +0200, Michael S. Tsirkin wrote:
> > > Can you please test the following:
> > > 
> > > Add "clocksource=acpi_pm" to the kernel commandline.
> > > 
> > > If this does not change anything, then disable CONFIG_HPET and retry.
> > 
> > I have:
> > $ grep CONFIG_HPET .config
> > CONFIG_HPET_TIMER=y
> > CONFIG_HPET_EMULATE_RTC=y
> > # CONFIG_HPET is not set
> > 
> > so I think all these tests were done with CONFIG_HPET=n.
> 
> Gack. Please turn off CONFIG_HPET_TIMER and CONFIG_HPET_EMULATE_RTC

Okay ... although they are in defconfig for i386, and they did not create
problems in 2.6.20.

> > Given this, does it still make sense to test clocksource=acpi_pm?
> 
> Yes.

With or without CONFIG_HPET_TIMER?


-- 
MST
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