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From:   Tomeu Vizoso <tomeu.vizoso@collabora.com>
Date:   Wed, 29 May 2019 17:09:22 +0200
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Subject: Re: [PATCH v6 0/6] Allwinner H6 Mali GPU support
To:     =?UTF-8?B?Q2zDqW1lbnQgUMOpcm9u?= <peron.clem@gmail.com>
Cc:     David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Maxime Ripard <maxime.ripard@bootlin.com>,
        Chen-Yu Tsai <wens@csie.org>,
        Will Deacon <will.deacon@arm.com>,
        Robin Murphy <robin.murphy@arm.com>,
        Joerg Roedel <joro@8bytes.org>,
        Neil Armstrong <narmstrong@baylibre.com>,
        Steven Price <steven.price@arm.com>,
        devicetree@vger.kernel.org,
        open list <linux-kernel@vger.kernel.org>,
        dri-devel <dri-devel@lists.freedesktop.org>,
        Linux IOMMU <iommu@lists.linux-foundation.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@lists.infradead.org>
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On Tue, 21 May 2019 at 18:11, Clément Péron <peron.clem@gmail.com> wrote:
>
[snip]
> [  345.204813] panfrost 1800000.gpu: mmu irq status=1
> [  345.209617] panfrost 1800000.gpu: Unhandled Page fault in AS0 at VA
> 0x0000000002400400

From what I can see here, 0x0000000002400400 points to the first byte
of the first submitted job descriptor.

So mapping buffers for the GPU doesn't seem to be working at all on
64-bit T-760.

Steven, Robin, do you have any idea of why this could be?

Thanks,

Tomeu