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SubjectRe: 2.6.25-rc5-git6: Reported regressions from 2.6.24
On Fri, 21 Mar 2008, Gabriel C wrote:
> >> Also, can you please reapply the reverted clocksource patch ? I have
> >> the feeling that the acpi_pm one was the real problem which was
> >> triggered the modfied watchdog.
> >
> > Sure I can , will do so in some minutes and let you know.
>
> It took a bit longer sorry but I have more infos now.
>
> The acpi_pm was not related to that I still get the problem.
>
> Of course I still can try to find the commit which magically fixed acpi_pm if you really want.

Just if you are really bored. :) I would have asked if it had fixed
the TSC issue.

> It seems like it breaks only when you enable HT and only on 2 socket motherboards.
> ( at least the ones I own , I know is old hardware but worked fine for me )

Hmm. I wonder why a dual socket board survives the initial sync test.

> Also disabling the second CPU and enabling HT works , enabling both
> CPUs and disabling HT works , booting with enabled HT and both CPUs
> but maxcpus=2 also works , booting with 2 CPUs and HT on breaks ,
> booting with both CPUs HT on but maxcpus=3 breaks also.
>
> Also I have another dual motherboard here 604 socket with 2 2,4 GHz
> Xeon's. The motherboard has the storage controller somewhat broken
> but for a quick test it is still good :) and I see the same thing.
>
> Does that make any sense ?

Not really. Can you please revert the reverted revert again and run

http://people.redhat.com/mingo/time-warp-test/time-warp-test.c

on your machine with all CPUs and HT enabled ?

Thanks,
tglx


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