Re: [PATCH 3/4 v5] iommu/fsl: Add iommu domain attributes requiredby fsl PAMU driver.

[Joerg Roedel]

On Mon, Dec 03, 2012 at 04:57:29PM +0000, Sethi Varun-B16395 wrote:
> 
> 
> > -----Original Message-----
> > From: iommu-bounces@xxxxxxxxxxxxxxxxxxxxxxxxxx [mailto:iommu-
> > bounces@xxxxxxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Joerg Roedel
> > Sent: Sunday, December 02, 2012 7:33 PM
> > To: Sethi Varun-B16395
> > Cc: linux-kernel@xxxxxxxxxxxxxxx; iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx; Wood
> > Scott-B07421; linuxppc-dev@xxxxxxxxxxxxxxxx; Tabi Timur-B04825
> > Subject: Re: [PATCH 3/4 v5] iommu/fsl: Add iommu domain attributes
> > required by fsl PAMU driver.
> > 
> > Hmm, we need to work out a good abstraction for this.
> > 
> > On Tue, Nov 20, 2012 at 07:24:56PM +0530, Varun Sethi wrote:
> > > Added the following domain attributes required by FSL PAMU driver:
> > > 1. Subwindows field added to the iommu domain geometry attribute.
> > 
> > Are the Subwindows mapped with full size or do you map only parts of the
> > subwindows?
> > 
> [Sethi Varun-B16395] It's possible to map a part of the subwindow i.e.
> size of the mapping can be less than the sub window size.

Yes, I know that this is possible. But do you plan to support that or is
it sufficient when the whole subwindow is mapped?


	Joerg


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