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

Thomas Gleixner
2007-03-25T10:20:12Z

On Sun, 2007-03-25 at 12:15 +0200, Michael S. Tsirkin wrote:
> > Quoting Thomas Gleixner <tglx@linutronix.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.

I know, but we are looking for a regression and the hpet related code
_has_ changed.

> > > Given this, does it still make sense to test clocksource=acpi_pm?
> >
> > Yes.
>
> With or without CONFIG_HPET_TIMER?

with, as a first test.

tglx