[parisc-linux] 2.4.18-pa35 SMP process hangs on a J200

[MichaelS.Zick]

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On Tuesday 11 June 2002 01:39 pm, Michael S. Zick wrote:
> On Tuesday 11 June 2002 09:58 am, Randolph Chung wrote:
> > think we are looking at multiple bugs here.....
>
> Very likely...
Sirs...
I now have a definate lead for the x86-SMP case, which might 
aid the troubleshooters in the pa-risc branch (diff's attached).

Evidently, some code path is causing these portions of IRQ 
service to be entered with the IRQ state not as designed.

These patches preserve callers interrupt state, eliminating
the erratic behavior, which is only an artifact of the true cause.

True cause still unknown.

Additional note: On the HP models with the worst of the problems;
is the physical_cpu_id and the logical_cpu_id a 1:1 mapping as
it is on x86 systems?

Mike

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