From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <ak@suse.de>
Subject: Re: [PATCH] Fix preemptible lazy mode bug
Date: Thu, 6 Sep 2007 06:41:36 +0100
Message-ID: <200709060641.36855.ak@suse.de>
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To: Zachary Amsden <zach@vmware.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>, Linus Torvalds <torvalds@osdl.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@osdl.org>, Jeremy Fitzhardinge <jeremy@goop.org>, Chris Wright <chrisw@sous-sol.org>, stable@kernel.org, Virtualization Mailing List <virtualization@lists.osdl.org>
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>I agree.  The patch is a nop.  I just got overly paranoid.  The whole
>thing is just very prone to bugs.
So do we need a patch for .23 or not?

>; it does
> seem perfectly acceptable though for the mm code to use kmap or vmap
> (not kmap_atomic) internally somewhere in the pagetable code.

i386 does it all the time for highmem pagetables in fact.

-Andi