[PATCH v3 1/6] iommu/core: split mapping to page sizes as supported by the hardware

[Ohad Ben-Cohen]

> On Mon, Oct 10, 2011 at 5:36 PM, Roedel, Joerg <Joerg.Roedel at amd.com> wrote:
>> The master branch is best to base your patches on for generic work.

It looks like the master branch is missing something like this: