linux-kernel - cleanup the dma

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Message-Id: <20190816070754.15653-1-hch@lst.de>
Date:   Fri, 16 Aug 2019 09:07:48 +0200
From:   Christoph Hellwig <hch@....de>
To:     iommu@...ts.linux-foundation.org
Cc:     Guan Xuetao <gxt@....edu.cn>, Shawn Anastasio <shawn@...stas.io>,
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linuxppc-dev@...ts.ozlabs.org, linux-mips@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-m68k@...ts.linux-m68k.org, linux-kernel@...r.kernel.org
Subject: cleanup the dma_pgprot handling

Hi all,

this series replaced 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.

I'd still like to hear a confirmation from the mips folks how
the write combibe attribute can or can't work with the KSEG1
uncached segment.