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References: <20181025091823.20571-1-chris@chris-wilson.co.uk> <20181025091823.20571-2-chris@chris-wilson.co.uk>
In-Reply-To: <20181025091823.20571-2-chris@chris-wilson.co.uk>
From: Matthew Auld <matthew.william.auld@gmail.com>
Date: Thu, 25 Oct 2018 18:16:46 +0100
Message-ID: <CAM0jSHPhyix5Gv_0D96di0J29v160-Zj+2WvRGAEbUyQM0_y6Q@mail.gmail.com>
Subject: Re: [Intel-gfx] [PATCH 2/2] drm/i915: Compare user's 64b GTT offset
 even on 32b
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Intel Graphics Development <intel-gfx@lists.freedesktop.org>,
        stable@vger.kernel.org
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On Thu, 25 Oct 2018 at 10:18, Chris Wilson <chris@chris-wilson.co.uk> wrote:
>
> Beware mixing unsigned long constants and 64b values, as on 32b the
> constant will be zero extended and discard the high 32b when used as
> a mask!
>
> Reported-by: Sergii Romantsov <sergii.romantsov@globallogic.com>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108282
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
> Cc: stable@vger.kernel.org
Reviewed-by: Matthew Auld <matthew.auld@intel.com>