linux-kernel - add swiotlb support to arm32

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Message-Id: <20190709142011.24984-1-hch@lst.de>
Date:   Tue,  9 Jul 2019 07:20:09 -0700
From:   Christoph Hellwig <hch@....de>
To:     Russell King - ARM Linux admin <linux@...linux.org.uk>
Cc:     Roger Quadros <rogerq@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Subject: add swiotlb support to arm32

Hi Russell,

This series adds swiotlb support to the 32-bit arm port to ensure
platforms with LPAE support can support DMA mapping for all devices
using 32-bit dma masks, just like we do on other ports that support
> 32-bit physical addressing and don't have an iommu.