From: Jesse Barnes <jbarnes@engr.sgi.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [PATCH 2.6.11-rc2 0/3] altix: AGP bridge support for tioca chip
Date: Mon, 07 Feb 2005 16:51:46 +0000 [thread overview]
Message-ID: <200502070851.47002.jbarnes@engr.sgi.com> (raw)
In-Reply-To: <20050204213158.16671.87679.94380@attica.americas.sgi.com>
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
next prev parent reply other threads:[~2005-02-07 16:51 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-04 21:31 [PATCH 2.6.11-rc2 0/3] altix: AGP bridge support for tioca chip Mark Maule
2005-02-07 10:07 ` Christoph Hellwig
2005-02-07 16:51 ` Jesse Barnes [this message]
2005-02-08 0:08 ` Mark Maule
2005-02-08 18:05 ` Jesse Barnes
2005-02-08 18:15 ` Luck, Tony
2005-03-10 21:55 ` Mark Maule
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