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From:   Christoph Hellwig <hch@lst.de>
To:     iommu@lists.linux-foundation.org
Cc:     Guan Xuetao <gxt@pku.edu.cn>, Shawn Anastasio <shawn@anastas.io>,
        Russell King <linux@armlinux.org.uk>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Robin Murphy <robin.murphy@arm.com>,
        Paul Burton <paul.burton@mips.com>,
        James Hogan <jhogan@kernel.org>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        linuxppc-dev@lists.ozlabs.org, linux-mips@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-m68k@lists.linux-m68k.org, linux-kernel@vger.kernel.org
Subject: cleanup the dma_pgprot handling v2
Date:   Mon, 26 Aug 2019 15:25:47 +0200
Message-Id: <20190826132553.4116-1-hch@lst.de>
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Hi all,

this series replaces the arch_dma_mmap_pgprot hooks with the
simpler pgprot_dmacoherent as used by the arm code already and
cleans up various bits around that area.

Changes since v1:
 - improve the new arm64 comment
 - keep the special DMA_ATTR_WRITE_COMBINE handling for mips and
   document it