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SubjectRe: [PATCH] percpu: add optimized generic percpu accessors
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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.


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