Re: Linux 2.4.17-pre5

From: Alan Cox (
Date: Tue Dec 11 2001 - 18:14:34 EST

> Actually we don't do a 1:1 physical to logical mapping. I currently
> have a board that has physical id's of: 0:6 and logical id's of 0:1
> with no changes to the current x86 code.

I mistook the physical to apic ones. My fault

 * On x86 all CPUs are mapped 1:1 to the APIC space.
 * This simplifies scheduling and IPI sending and
 * compresses data structures.
static inline int cpu_logical_map(int cpu)
        return cpu;
static inline int cpu_number_map(int cpu)
        return cpu;
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This archive was generated by hypermail 2b29 : Sat Dec 15 2001 - 21:00:21 EST