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SubjectRe: 2.6.25-rc5-git6: Reported regressions from 2.6.24
Thomas Gleixner wrote:
> 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 ?

Sure , doing so now.

>
> Thanks,
> tglx


Gabriel


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