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From: David Miller <davem@davemloft.net>
Subject: Re: [net-next 2/4] e1000: remove workaround for Errata 23 from
 jumbo alloc
Date: Thu, 17 May 2012 15:32:33 -0400 (EDT)
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From: Ben Hutchings <bhutchings@solarflare.com>
Date: Thu, 17 May 2012 15:40:30 +0100

> I don't believe PAGE_SIZE is >64K on any architecture, but perhaps you
> should replace the run-time check with:

powerpc can be built with PAGE_SHIFT == 18