Re: Another (ESP?) scsi blk-mq problem on sparc64

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On Fri, Nov 21, 2014 at 02:56:00PM -0500, David Miller wrote:
> I would suggest looking into the possibility that we allocate the memory
> using the count of valid cpus, rather than the largest cpu number.
> 
> That's a common error that runs into problems with discontiguous
> cpu numbering like Sparc sometimes has.

Yes, that does look like the case.  Do you have a good trick on how
to allocate a map for the highest possible cpu number without first
iterating the cpu map?  I couldn't find something that looks like a
highest_possible_cpu() helper.
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