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

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To: "Andi Kleen" <[email protected]>
Subject: Re: [PATCH] x86-64: disable the GART in shutdown
From: "Yinghai Lu" <[email protected]>
Date: Sun, 24 Jun 2007 17:18:11 -0700
Cc: "Alan Cox" <[email protected]>, "Eric W. Biederman" <[email protected]>, "Muli Ben-Yehuda" <[email protected]>, "Andrew Morton" <[email protected]>, "Vivek Goyal" <[email protected]>, "Linux Kernel Mailing List" <[email protected]>
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <[email protected]> <[email protected]>
Sender: [email protected]

On 6/23/07, Andi Kleen <[email protected]> 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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References:
- [PATCH] x86-64: disable the GART before allocate aperture
  - From: Yinghai Lu <[email protected]>
- Re: [PATCH] x86-64: disable the GART before allocate aperture
  - From: Yinghai Lu <[email protected]>
- [PATCH] x86-64: disable the GART in shutdown
  - From: Yinghai Lu <[email protected]>
- Re: [PATCH] x86-64: disable the GART in shutdown
  - From: Andi Kleen <[email protected]>

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