linux-kernel - Re: Populating multiple ptes at fault time

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Message-ID: <33307c790809181411j41a6fc4ev8560a13ed8661ec2@mail.gmail.com>
Date:	Thu, 18 Sep 2008 14:11:35 -0700
From:	"Martin Bligh" <mbligh@...gle.com>
To:	"Chris Snook" <csnook@...hat.com>
Cc:	"Jeremy Fitzhardinge" <jeremy@...p.org>,
	"Christoph Lameter" <cl@...ux-foundation.org>,
	"Nick Piggin" <nickpiggin@...oo.com.au>,
	"Hugh Dickens" <hugh@...itas.com>,
	"Linux Memory Management List" <linux-mm@...ck.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Avi Kivity" <avi@...ranet.com>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Rik van Riel" <riel@...hat.com>
Subject: Re: Populating multiple ptes at fault time

>> Yup, basically you're assuming good locality of reference, but it turns
>> out that (as davej would say) "userspace sucks".
>
> Well, *most* userspace sucks.  It might still be worthwhile to do this when
> userspace is using madvise().

Quite possibly true ... something to benchmark.
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