[PATCH 13/20] intel-iommu: switch from ioremap_cache to memremap

Dan Williams dan.j.williams at intel.com
Mon Oct 12 15:19:24 PDT 2015

On Mon, Oct 12, 2015 at 3:05 PM, Dan Williams <dan.j.williams at intel.com> wrote:
> On Mon, Oct 12, 2015 at 2:58 PM, Joerg Roedel <jroedel at suse.de> wrote:
>> Hi Dan,
>> On Fri, Oct 09, 2015 at 06:16:46PM -0400, Dan Williams wrote:
>>> In preparation for deprecating ioremap_cache() convert its usage in
>>> intel-iommu to memremap.  This also eliminates the mishandling of the
>>> __iomem annotation in the implementation.
>> I appreciate the change, but in the cover letter you write the API is
>> only implemented for x86 so far? The VT-d driver is also used on ia64,
>> will it still work there with this patch?
> I did convert ia64 in the series [1]  but you're right this patch
> can't go in independently of that conversion.  If you ack this one
> I'll carry them in order.
> [1]: https://lkml.org/lkml/2015/10/9/702

Ah sorry, got ahead of myself ;-p.  You can safely take this patch
through your tree.  The ia64 patch can happen asynchronously because
kernel/memremap.c has:

__weak void *arch_memremap(resource_size_t offset, size_t size,
unsigned long flags)

...as a temporary fallback until the conversion is complete.

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