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Date:   Fri, 16 Aug 2019 19:59:42 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Will Deacon <will@kernel.org>
Cc:     Christoph Hellwig <hch@lst.de>, iommu@lists.linux-foundation.org,
        Guan Xuetao <gxt@pku.edu.cn>,
        Shawn Anastasio <shawn@anastas.io>,
        Russell King <linux@armlinux.org.uk>,
        Catalin Marinas <catalin.marinas@arm.com>,
        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: Re: [PATCH 6/6] arm64: document the choice of page attributes for
 pgprot_dmacoherent
Message-ID: <20190816175942.GA4879@lst.de>
References: <20190816070754.15653-1-hch@lst.de> <20190816070754.15653-7-hch@lst.de> <20190816173118.4rbbzuogfamfa554@willie-the-truck>
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On Fri, Aug 16, 2019 at 06:31:18PM +0100, Will Deacon wrote:
> Mind if I tweak the second sentence to be:
> 
>   This is different from "Device-nGnR[nE]" memory which is intended for MMIO
>   and thus forbids speculation, preserves access size, requires strict
>   alignment and can also force write responses to come from the endpoint.
> 
> ? It's a small change, but it better fits with the arm64 terminology
> ("strongly ordered" is no longer used in the architecture).
> 
> If you're happy with that, I can make the change and queue this patch
> for 5.4.

I'm fine with the change, but you really need this series as base,
as there is no pgprot_dmacoherent before the series.  So I think I'll
have to queue it up if we want it for 5.4, and I'll need a few more
reviews for the other patches in this series first.