linux-kernel - Re: [PATCH 1/3] drm: add gem ttm helpers

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Message-ID: <20190807115133.gkr2svqlvq366mub@sirius.home.kraxel.org>
Date:   Wed, 7 Aug 2019 13:51:33 +0200
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     Daniel Vetter <daniel@...ll.ch>
Cc:     dri-devel <dri-devel@...ts.freedesktop.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...ux.ie>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] drm: add gem ttm helpers

  Hi,

> > > > I don't think so.  drm_gem_dumb_map_offset() calls
> > > > drm_gem_create_mmap_offset(), which I think is not correct for ttm
> > > > objects because ttm_bo_init() handles vma_node initialization.

> Ok I looked again, and your ttm version seems to exactly match
> drm_gem_dumb_map_offset(),

No.  The difference outlined above is still there.  See also v2 which
adds an comment saying so.

cheers,
  Gerd