linux-kernel - Re: [PATCH] xen: handle highmem pages correctly when shrinking a domain

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Message-ID: <20090123175614.GA26627@elte.hu>
Date:	Fri, 23 Jan 2009 18:56:14 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Ian Campbell <ian.campbell@...rix.com>
Cc:	linux-kernel@...r.kernel.org,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	"dan.magenheimer@...cle.com" <dan.magenheimer@...cle.com>,
	Xen-devel <xen-devel@...ts.xensource.com>,
	Stable Kernel <stable@...nel.org>
Subject: Re: [PATCH] xen: handle highmem pages correctly when shrinking a
	domain


* Ian Campbell <ian.campbell@...rix.com> wrote:

> This commit causes a crash if the page being released is a highmem
> page.
> 
>   commit 1058a75f07b9bb8323fb5197be5526220f8b75cf
>   Author: Dan Magenheimer <dan.magenheimer@...cle.com>
>   Date:   Thu Jan 22 14:36:08 2009 -0800
> 
>     xen: actually release memory when shrinking domain
> 
> If a page is highmem then there is no need to unmap it.
> 
> Signed-off-by: Ian Campbell <ian.campbell@...rix.com>
> Cc: Jeremy Fitzhardinge <jeremy@...p.org>
> Cc: Ingo Molnar <mingo@...e.hu>
> Cc: dan.magenheimer@...cle.com <dan.magenheimer@...cle.com>
> Cc: Xen-devel <xen-devel@...ts.xensource.com>
> Cc: Stable Kernel <stable@...nel.org>
> ---
>  drivers/xen/balloon.c |   11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)

Applied to tip/x86/urgent, thanks Ian!

	Ingo
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