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 23:23:58 +0200
From:	Izik Eidus <ieidus@...hat.com>
To:	Christoph Lameter <cl@...ux-foundation.org>
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

Christoph Lameter wrote:
>> 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.
>   
i mean filebacked page (!AnonPage())
ksm need the pte inside the vma to point from anonymous page into 
filebacked page
can migrate.c do it without changes?
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