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Message-ID: <CAPaKu7Skvc6UW+amOz4F8AAW95kXQzMhEJn-v=7kdGqu1dbtxA@mail.gmail.com>
Date:   Sun, 30 Jun 2019 11:42:25 -0700
From:   Chia-I Wu <olvaffe@...il.com>
To:     Gerd Hoffmann <kraxel@...hat.com>
Cc:     ML dri-devel <dri-devel@...ts.freedesktop.org>,
        David Airlie <airlied@...ux.ie>,
        "open list:VIRTIO GPU DRIVER" 
        <virtualization@...ts.linux-foundation.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 11/12] drm/virtio: switch from ttm to gem shmem helpers

On Fri, Jun 28, 2019 at 3:49 AM Gerd Hoffmann <kraxel@...hat.com> wrote:
>
> > >  static inline struct virtio_gpu_object*
> > >  virtio_gpu_object_ref(struct virtio_gpu_object *bo)
>
> > The last users of these two helpers are removed with this patch.  We
> > can remove them.
>
> patch 12/12 does that.
I meant virtio_gpu_object_ref/unref, which are still around after patch 12.
>
> > > +       bo = gem_to_virtio_gpu_obj(&shmem_obj->base);
> > > +       bo->base.base.funcs = &virtio_gpu_gem_funcs;
> > Move this to virtio_gpu_create_object.
>
> Fixed.
>
> > > +       ret = drm_gem_shmem_pin(&obj->base.base);
> > The bo is attached for its entire lifetime, at least currently.  Maybe
> > we can use drm_gem_shmem_get_pages_sgt (and get rid of obj->pages).
>
> Already checked this.
> We can't due to the iommu quirks.
>
> cheers,
>   Gerd
>

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