Re: [BROKEN PATCH] kexec for ia64

From: Grant Grundler <iod00d_at_hp.com>
Date: 2004-08-05 09:33:35
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
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Received on Wed Aug 4 19:35:03 2004

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