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SubjectRe: [BUG][2.6.0-test3-bk7] x86-64 UP_IOAPIC panic caused by cpumask_t conversion
> Odd; I have a UP IO-APIC ia32 box here and it appears to do okay; there
> is a question of sparse APIC ID's and APIC ID space needing to be
> independent of NR_CPUS handled in the ia32 code that isn't handled in
> the x86_64 code. It was handled for ia32 by using a bitmap of size
> MAX_APICS (physid_mask_t) instead of cpumask_t for the things, which
> appears to eliminate various special cases for xAPIC's too.

Ok, then the physid_mask_t code needs to be ported over to x86-64.

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