Messages in this thread | | | Date | Wed, 28 Jan 2009 12:47:19 -0800 (PST) | Subject | Re: [PATCH] percpu: add optimized generic percpu accessors | From | David Miller <> |
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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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