Re: [RFC 3/3] mm: iommu: The Virtual Contiguous Memory Manager

From: Joerg Roedel
Date: Sat Jul 10 2010 - 10:56:45 EST


On Fri, Jul 02, 2010 at 12:33:51AM -0700, Zach Pfeffer wrote:
> Daniel Walker wrote:

> > So if we include this code which "map implementations" could you
> > collapse into this implementations ? Generally , what currently existing
> > code can VCMM help to eliminate?
>
> In theory, it can eliminate all code the interoperates between IOMMU,
> CPU and non-IOMMU based devices and all the mapping code, alignment,
> mapping attribute and special block size support that's been
> implemented.

Thats a very abstract statement. Can you point to particular code files
and give a rough sketch how it could be improved using VCMM?

Joerg

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