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Message-ID: <CAPM=9txOFw60VZZQYJnOg+BCXLoN8cUd+Ri_B8Bt4Lg0sYBH4A@mail.gmail.com>
Date:   Mon, 22 Oct 2018 11:50:16 +1000
From:   Dave Airlie <airlied@...il.com>
To:     mtirado418@...il.com
Cc:     Dave Airlie <Airlied@...ux.ie>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Gerd Hoffmann <kraxel@...hat.com>,
        "Deucher, Alexander" <alexander.deucher@....com>,
        "Koenig, Christian" <christian.koenig@....com>,
        zhoucm1 <David1.zhou@....com>, Hongbo.He@....com,
        Sean Paul <seanpaul@...omium.org>,
        Gustavo Padovan <Gustavo@...ovan.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
Subject: Re:

On Mon, 22 Oct 2018 at 10:49, Michael Tirado <mtirado418@...il.com> wrote:
>
> On Mon, Oct 22, 2018 at 12:26 AM Dave Airlie <airlied@...il.com> wrote:
> >
> > This shouldn't be necessary, did someone misbackport the mmap changes without:
> >
> > drm: set FMODE_UNSIGNED_OFFSET for drm files
> >
> > Dave.
>
> The latest kernel I have had to patch was a 4.18-rc6.  I'll try with a
> newer 4.19 and let you know if it decides to work.  If not I'll
> prepare a test case for demonstration on qemu-system-i386.

If you have custom userspace software, make sure it's using
AC_SYS_LARGEFILE or whatever the equivalant is in your build system.

64-bit file offsets are important.

Dave.