Re: possible dmar_init_reserved_ranges() error

From: Joerg Roedel
Date: Fri Dec 23 2016 - 05:36:04 EST


On Thu, Dec 22, 2016 at 06:48:01PM -0600, Bjorn Helgaas wrote:
> If we didn't want to use pcibios_resource_to_bus() here for some
> reason, we should at least add a comment about why we think it's OK to
> use a CPU physical address as an IOVA.

Even if there are no such x86 systems out there, I think it doesn't hurt
to handle the possibility correctly in the IOMMU drivers.



Joerg