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Date: Fri, 23 Dec 2016 11:35:48 +0100
From: Joerg Roedel <joro@8bytes.org>
To: Bjorn Helgaas <helgaas@kernel.org>
Cc: "Raj, Ashok" <ashok.raj@intel.com>, linux-pci@vger.kernel.org,
	iommu@lists.linux-foundation.org,
	David Woodhouse <dwmw2@infradead.org>, linux-kernel@vger.kernel.org,
	rwright@hpe.com
Subject: Re: possible dmar_init_reserved_ranges() error
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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