[PATCH 1/6] ARM: Add inline function smp_cpu() for early init testing

[Russell King - ARM Linux]

On Fri, Sep 03, 2010 at 09:58:23AM +0100, Will Deacon wrote:
> Your patches are turning up as attachments here, so I can't comment
> inline. The only problem I can see is for SMP v6 platforms (ARM11MPCore)
> where the MPIDR is actually the `CPU ID register' with bits 31:12 set to
> zero, so we'll say it's a UP core.
> 
> Since 11MPCore is the only ARM SMP v6 processor and you're checking
> the implementor ID anyway, it might be easier to check for the 11MPCore
> explicitly, ((read_cpuid_id() & 0xfff0) == 0xB020) rather than check for v6/v7.
> 
> Or we could just ignore v6 for now.

We can't.  We need to get this correct so the head.S code can also get it
right.