Re: [PATCH 2.6.11-rc2 0/3] altix: AGP bridge support for tioca chip

From: Jesse Barnes <jbarnes_at_engr.sgi.com>
Date: 2005-02-08 03:51:46
On Monday, February 7, 2005 2:07 am, Christoph Hellwig wrote:
> Wouldn't it be better to allow pluggable IOMMUs at the ia64 architecture
> level, replacing the machvecs?
>
> zx1 already has a switch to use swiotl for devices with too small dma
> masks (and altix would need that one aswell if it tried to support such
> devices).

Something like that might be nice as part of the bridge driver work that's 
being discussed on lkml.  Machine vectors as they stand right now aren't a 
good fit since they're only initialized once for the platform at boot time, 
not on a per-chip basis.

Jesse
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Received on Mon Feb 7 11:52:46 2005

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