linux-kernel - Re: [PATCH] x86-64: disable the GART before allocate aperture

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Message-ID: <20070622231951.4d516215@the-village.bc.nu>
Date:	Fri, 22 Jun 2007 23:19:51 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	ebiederm@...ssion.com (Eric W. Biederman)
Cc:	Muli Ben-Yehuda <muli@...ibm.com>, Yinghai Lu <Yinghai.Lu@....COM>,
	Andi Kleen <ak@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Vivek Goyal <vgoyal@...ibm.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86-64: disable the GART before allocate aperture

> YH do you think you can look at simply reserving a portion of the iommu?
> And having the kexec on panic kernel use the reserved portion?

How about simply reserving all of it for the base kernel and using soft
iommu for the panic kernel, its hardly high performance criticial at this
point.
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