linux-kernel - Re: [PATCH v2 6/7] drm/rockchip: Respect page offset in IOMMU mmap

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Message-ID: <20170207123359.GB18315@ulmo.ba.sec>
Date:   Tue, 7 Feb 2017 13:33:59 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Mark Yao <mark.yao@...k-chips.com>
Cc:     David Airlie <airlied@...ux.ie>, Heiko Stuebner <heiko@...ech.de>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Ørjan Eide <orjan.eide@....com>,
        Tomasz Figa <tfiga@...omium.org>
Subject: Re: [PATCH v2 6/7] drm/rockchip: Respect page offset in IOMMU mmap

On Tue, Feb 07, 2017 at 04:39:09PM +0800, Mark Yao wrote:
> From: Ørjan Eide <orjan.eide@....com>
> 
> When mapping buffers through the PRIME DMA-buf mmap path we might be
> given an offset which has to be respected. The DRM GEM mmap path already
> takes care of zeroing out the fake mmap offset, so we can just make the
> IOMMU mmap implementation always respect the offset.
> 
> TEST=graphics_GLBench

This is useless in an upstream context, please remove.

Thierry

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