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Date: Wed, 4 Aug 2004 16:33:35 -0700
From: Grant Grundler <iod00d@hp.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: "Randy.Dunlap" <rddunlap@osdl.org>, Jesse Barnes <jbarnes@engr.sgi.com>,
       linux-ia64@vger.kernel.org, fastboot@osdl.org,
       linux-kernel@vger.kernel.org
Subject: Re: [BROKEN PATCH] kexec for ia64
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On Wed, Aug 04, 2004 at 07:07:04AM -0600, Eric W. Biederman wrote:
> Initially that patch
> was targeted for a kernel without device_shutdown(), so I was
> likely considering the old trick of running through all of the PCI
> devices and disabling their bus master bit.

Blindly disabling all PCI bus master bits will also kill VGA/serial
console and any USB keyboard attached to the system.

I'll comment more on the "DMA is a Red Herring" when I can read
more what it is about.

grant