[parisc-linux] Re: [parisc-linux-cvs] linux carlos

[James Bottomley]

On Mon, 2003-08-25 at 11:45, Grant Grundler wrote:
> PAT PDC (L-/N-class and A500) have hard coded numbers for CPUs.
> parisc-linux only uses logical CPU numbers to avoid sparsely populated
> arrays. parisc-linux can get the "Physical CPU #" from PAT PDC.
> See code inside USE_PAT_CPUID in arch/parisc/kernel/processor.c.
> You might hack that code a bit so you can correlate logic to physical
> CPU numbers.

Not for 2.6 we shouldn't.  The beginnings of the hotplug CPU API made
logical CPU numbers deprecated (even for x86, which was the worst
logical vs phsyical number abuser).  We need to move entirely to
physical numbers only for 2.6

James