[PATCH 0/4] Hacks to allow booting ARM SMP kernel on UP ARMv7

[Tony Lindgren]

* Will Deacon <will.deacon at arm.com> [100823 09:51]:
> Hi Tony,
> 
> > Hi all,
> > 
> > Here are some experimental patches to allow booting ARMv7 SMP
> > kernel on UP to some extent. Posting these early in case it is
> > of any help as I know at least Bryan Wu is working on similar
> > issues.
> > 
> > The patches are very much work in progress, and does not quite
> > boot to init yet so there's all kinds of things to fix. But at
> > least these patches allow booting to the point where the fixing
> > issues might be a bit easier.. Currently it boots to the point
> > where there are tons of "WARNING: at mm/percpu-vm.c:320 pcpu_alloc"
> > prints.
> 
> I've got some similar hacks for the RealView boards which I've used
> to build a Kernel that can boot on the PB-A8 and PBX-A9. Whilst this
> is the wrong way of going about solving the problem [Russell's code
> patching is a lot neater and more scaleable] you might be interested
> in looking at the code anyway:
> 
> http://www.linux-arm.org/git?p=linux-2.6-wd.git;a=shortlog;h=refs/heads/smp-up-hacks
> 
> Only v7 cores are supported and TEX remapping is used to avoid having
> to worry about setting the shared attribute at runtime. Yuck!

Heh cool, I'll take a look at those :)

Tony