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Date: Tue, 06 Aug 2002 22:16:04 -0700
From: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>
Reply-To: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>
To: Andrew Morton <akpm@zip.com.au>,
       William Lee Irwin III <wli@holomorphy.com>
cc: linux-kernel@vger.kernel.org, riel@surriel.com
Subject: Re: fix CONFIG_HIGHPTE
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> And we'll need that, to reduce load on KM_PTECHAIN.  Because
> there's no point in pte_highmem without also having pte_chain_highmem,
> yes?

I'm not sure I agree that there's no point. If we shove half the 
overhead into highmem (well, maybe 1/3 depending if on your PTE size), 
we can fit a workload double the size. Not to be sniffed at. 50% of 
the benefit at 5% of the cost.

No, it doesn't completely solve the problem, but it's another hammer
to give it a good sturdy whack over the head with. 

M.

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