linux-kernel - Re: [PATCH 2/4] Add replace_page(), change the mapping of pte from one page into another

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Date:	Tue, 11 Nov 2008 15:21:45 -0600 (CST)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Izik Eidus <ieidus@...hat.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	kvm@...r.kernel.org, aarcange@...hat.com, chrisw@...hat.com,
	avi@...hat.com, izike@...ranet.com
Subject: Re: [PATCH 2/4] Add replace_page(), change the mapping of pte from
 one page into another

On Tue, 11 Nov 2008, Izik Eidus wrote:

> yes but it replace it with kernel allocated page.
> > page migration already kinda does that.  Is there common ground?
> >
> >
> page migration as far as i saw cant migrate anonymous page into kernel page.
> if you want we can change page_migration to do that, but i thought you will
> rather have ksm changes separate.

What do you mean by kernel page? The kernel can allocate a page and then
point a user space pte to it. That is how page migration works.
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