linux-kernel - Re: [PATCH] [0/31] Great change_page

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Date:	Tue, 15 Jan 2008 09:11:44 +0000
From:	"Jan Beulich" <jbeulich@...ell.com>
To:	<ak@...e.de>
Cc:	<mingo@...e.hu>, <tglx@...utronix.de>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] [0/31] Great change_page_attr patch series v2

>>> Andi Kleen <ak@...e.de> 14.01.08 23:16 >>>
>
>Lots of improvements to change_page_attr(). Make it a lot more
>efficient and fix various bugs.
>
>Changes against earlier version
>
>- Fixed some checkpatch.pl complaints
>- Improved self test suite
>- Fixed more reference bugs 
>- Fix NX handling on 32bit
>- Remove some useless code there
>- Few other random fixes

The one concept that I'm missing (but that I can easily produce a follow-up
patch for, as I had this in my c_p_a() changes) is the tracking and adjusting
of the reference protection for a large page range that got fully converted
to another type (namely relevant for .rodata if it exceeds 2/4 Mb), allowing
to use a large page mapping in this case even for non-default mappings.

Apart from the other comments, the whole series

Acked-by: Jan Beulich <jbeulich@...ell.com>

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