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[Xen-devel] Re: [PATCH] xen: handle highmem pages correctly when shrinki

To: Ian Campbell <ian.campbell@xxxxxxxxxx>
Subject: [Xen-devel] Re: [PATCH] xen: handle highmem pages correctly when shrinking a domain
From: Ingo Molnar <mingo@xxxxxxx>
Date: 2009年1月23日 18:56:14 +0100
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, "dan.magenheimer@xxxxxxxxxx" <dan.magenheimer@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Stable Kernel <stable@xxxxxxxxxx>
Delivery-date: 2009年1月23日 09:57:59 -0800
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* Ian Campbell <ian.campbell@xxxxxxxxxx> wrote:
> This commit causes a crash if the page being released is a highmem
> page.
>
> commit 1058a75f07b9bb8323fb5197be5526220f8b75cf
> Author: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
> 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@xxxxxxxxxx>
> Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
> Cc: Ingo Molnar <mingo@xxxxxxx>
> Cc: dan.magenheimer@xxxxxxxxxx <dan.magenheimer@xxxxxxxxxx>
> Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
> Cc: Stable Kernel <stable@xxxxxxxxxx>
> ---
> drivers/xen/balloon.c | 11 +++++++----
> 1 file changed, 7 insertions(+), 4 deletions(-)
Applied to tip/x86/urgent, thanks Ian!
 Ingo
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