From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] qlogicpti: Fix compiler warnings
Date: Wed, 23 Nov 2016 20:24:01 -0500 (EST)
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From: James Bottomley <James.Bottomley@HansenPartnership.com>
Date: Wed, 23 Nov 2016 14:57:39 -0800

> What's the guarantee, since the device descriptors only cope with 32
> bits of physical address, that this driver never gets any dma address
> beyond its addressable range?  Is it that the sbus can never be
> attached to this ATU type IOMMU?  If so, saying that in the log would
> be useful.

SBUS hasn't changed for 20 years and is a 32-bit bus.