[PATCH 3/3] iommu/core: split mapping to page sizes as supported by the hardware

[Ohad Ben-Cohen]

Hi Joerg,

On Tue, Sep 13, 2011 at 1:10 PM, Roedel, Joerg <Joerg.Roedel at amd.com> wrote:
> Please split this patch into the core-change and patches for the
> individual iommu-drivers and post this as a seperate patch-set.

But we'll be breaking bisectibility this way, no ?

> Intel IOMMU does not support arbitrary page-sizes, afaik.

It does; besides the usual 4K it has "super page sizes" support of
2MB, 1GB, 512GB and 1TB.

>> +       pr_debug("map: iova 0x%lx pa 0x%lx size 0x%lx\n", iova,
>> +                                       (unsigned long)paddr, size);
>
> Please keep the debug-code in a seperate patch in your dev-tree. No need
> for it to be merged upstream.

It's actually useful sometimes to have those around - it's off by
default, and can be enabled only when needed (CONFIG_DYNAMIC_DEBUG).

But I don't mind removing them.

Thanks,
Ohad.