linux-kernel - Difference between IOVA and bus address when SMMU is enabled

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Message-ID: <c4fe00a3-33b1-7cd4-f613-768dee06ef6b@gmail.com>
Date:   Sat, 12 May 2018 18:25:13 +0530
From:   valmiki <valmikibow@...il.com>
To:     "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org,
        Jean-Philippe Brucker <jean-philippe.brucker@....com>
Subject: Difference between IOVA and bus address when SMMU is enabled

Hi All,

What is the difference between IOVA address and bus address
when SMMU is enabled ?

Is IOVA address term used only when hypervisor is present ?

Regards,
Valmiki

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