Messages in this thread | | | From | James Cleverdon <> | Subject | Re: [PATCH][2.4] generic support for systems with more than 8 CP Us (2/2) | Date | Mon, 23 Dec 2002 18:48:34 -0800 |
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On Sunday 22 December 2002 01:36 pm, Protasevich, Natalie wrote: [ Snip! ]
> > >In the last patch from Venkatesh there was a > 8CPUs option ... that > >seems like a direct correlation to clustered apic support to me ... > >maybe we could just switch on CONFIG_X86_CLUSTERED_APIC directly and > >bypass CONFIG_X86_MANY_CPU? The menu text could stay the same (less > >confusing for users than asking them about apic modes) ... > > Maybe, for other systems MANY_CPU criteria would make sense, but it won't > work for us: on ES7000s with Fosters/Gallatins, we can run 1 to 32 CPUs and > have to be in flat clustered mode in any case - whether we run 2 do 32 of
What is "flat clustered"? Has Intel cooked up yet another APIC operating mode? 8^) As far as I knew, the flat and clustered modes were mutually exclusive, based on the value in the DFR.
> them... This is also true for Cascades running on hierarchical cluster > (logical). Our APIC ID's are hard-coded topologically in the BIOS, so we > could run 2 processors on the high end of topology, with high APIC IDs. We > couldn't get around using just ID's (not the EID's), because hardware needs > the full CPU ID address to deliver IPIs. > > >M.
-- James Cleverdon IBM xSeries Linux Solutions {jamesclv(Unix, preferred), cleverdj(Notes)} at us dot ibm dot com
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