From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] percpu: add optimized generic percpu accessors
Date: Wed, 28 Jan 2009 12:47:19 -0800 (PST)
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From: Christoph Lameter <cl@linux-foundation.org>
Date: Wed, 28 Jan 2009 11:45:28 -0500 (EST)

> On Tue, 27 Jan 2009, David Miller wrote:
> 
> > > Why wont it scale? this is a separate TLB entry for each processor.
> >
> > The IA64 per-cpu TLB entry only covers 64k which makes use of it for
> > dynamic per-cpu stuff out of the question.  That's why it "doesn't
> > scale"
> 
> IA64 supports varying page sizes. You can use a 128k TLB entry etc.

Good luck moving to a larger size dynamically at run time.

It really isn't a tenable solution.