linux-kernel - Re: [PATCH] x86-64: disable the GART in shutdown

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Message-ID: <86802c440706241718g730a32e2hd5a0a6553f5156c6@mail.gmail.com>
Date:	Sun, 24 Jun 2007 17:18:11 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Andi Kleen" <ak@...e.de>
Cc:	"Alan Cox" <alan@...rguk.ukuu.org.uk>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"Muli Ben-Yehuda" <muli@...ibm.com>,
	"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 in shutdown

On 6/23/07, Andi Kleen <ak@...e.de> wrote:

> So my suggestion would be:
>
> (1) implement sysfs platform device based shutdown hooks (preferable
> before PCI shutdown)

BTW, it would be better if DMA ram range was registered there too.

> (2) make sure GART is never enabled in kernels that are all < 4GB (as
> in the kdump kernel). But what to do about AGP?
yeah, AGP bridge will enable GART already.

YH
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