Re: PROBLEM: Can't boot a (HZ = 1000) kernel using an AMD Phenom-II processor

Andreas Herrmann
2009-02-20T21:52:08Z

On Fri, Feb 20, 2009 at 01:34:02PM +0100, Ingo Molnar wrote:
>
> * Andreas Herrmann <andreas.herrmann3@amd.com> wrote:
>
> > On Thu, Feb 19, 2009 at 10:54:19AM -0500, Mark Hounschell wrote:
> > > Borislav Petkov wrote:
> > > > On Thu, Feb 19, 2009 at 10:16:40AM -0500, Mark Hounschell wrote:
> > > >> Andreas Herrmann wrote:
> > > >>> Hi Mark,
> > > >>>
> > > >>> Can you please provide us output of lspci -vvxxx.
> > > >>> (Please run this as root.)
> > > >>>
> > >
> > > Attached...
> > >
> > >
> > > >>> Furthermore you can try booting your 1000HZ kernel
> > > >>> with following kernel command lines:
> > > >>>
> >
> > Thanks for trying this out.
> > But nothing suspicious found. I.e. timer/hpet interrupt is enabled
> > and its routing seems to be ok.
> >
> > Here's one more check that's worth trying: In one of your logs I've
> > seen that HPET id reports 3 timers but later on 4 timers were detected
> > for HPET.
> >
> > To check what's going on I'd like to see the HPET
> > configuration in the course of booting your system. Please
> > apply attached patch and boot with hpet=debug -- both with
> > 250HZ and with 1000HZ -- and provide dmesg output.
>
> Mind sending this patch as a hpet=verbose feature patch which we
> could queue up for upstream merging? We have hpet problems
> frequently, so some built-in debug/verbosity trigger would be
> nice.

Yup, work is in progress.

Andreas