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Date: Sun, 28 Dec 2003 16:36:31 -0800
From: Mike Fedyk <mfedyk@matchmail.com>
To: William Lee Irwin III <wli@holomorphy.com>,
       Linus Torvalds <torvalds@osdl.org>,
       "Eric W. Biederman" <ebiederm@xmission.com>,
       Anton Ertl <anton@mips.complang.tuwien.ac.at>,
       linux-kernel@vger.kernel.org
Subject: Re: Page Colouring (was: 2.6.0 Huge pages not working as expected)
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	Linus Torvalds <torvalds@osdl.org>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Anton Ertl <anton@mips.complang.tuwien.ac.at>,
	linux-kernel@vger.kernel.org
References: <179fV-1iK-23@gated-at.bofh.it> <179IS-1VD-13@gated-at.bofh.it> <2003Dec27.212103@a0.complang.tuwien.ac.at> <Pine.LNX.4.58.0312271245370.2274@home.osdl.org> <m1smj596t1.fsf@ebiederm.dsl.xmission.com> <Pine.LNX.4.58.0312272046400.2274@home.osdl.org> <20031228163952.GQ22443@holomorphy.com>
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On Sun, Dec 28, 2003 at 08:39:52AM -0800, William Lee Irwin III wrote:
> On Sat, 27 Dec 2003, Eric W. Biederman wrote:
> >> For anyone taking you up on this I'd like to suggest two possible
> >> directions.
> >> 1) Increasing PAGE_SIZE in the kernel.
> 
> On Sat, Dec 27, 2003 at 08:53:30PM -0800, Linus Torvalds wrote:
> > Yes. This is something I actually want to do anyway for 2.7.x. Dan 
> > Phillips had some patches for this six months ago.
> > You have to be careful, since you have to be able to mmap "partial pages", 
> > which is what makes it less than trivial, but there are tons of reasons to 
> > want to do this, and cache coloring is actually very much a secondary 
> > concern.
> 
> I've not seen Dan Phillips' code for this. I've been hacking on
> something doing this since late last December.

I remember his work on pagetable sharing, but haven't heard anything about
changing the page size from him.

Could this be what Linus is remembering?