From: Gerd Hoffmann <kraxel@redhat.com>
To: Gurchetan Singh <gurchetansingh@chromium.org>
Cc: ML dri-devel <dri-devel@lists.freedesktop.org>,
Chia-I Wu <olvaffe@gmail.com>, David Airlie <airlied@linux.ie>,
Daniel Vetter <daniel@ffwll.ch>,
"open list:VIRTIO GPU DRIVER"
<virtualization@lists.linux-foundation.org>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v6 16/18] drm/virtio: rework virtio_gpu_cmd_context_{attach,detach}_resource
Date: Thu, 4 Jul 2019 14:00:31 +0200 [thread overview]
Message-ID: <20190704120031.mbgkwcrmxvmtp2ll@sirius.home.kraxel.org> (raw)
In-Reply-To: <CAAfnVBmKotCfkrM4hph4++FDrVUYR8WKpomP7Y0-aergqHTSyA@mail.gmail.com>
On Tue, Jul 02, 2019 at 05:08:46PM -0700, Gurchetan Singh wrote:
> On Tue, Jul 2, 2019 at 7:19 AM Gerd Hoffmann <kraxel@redhat.com> wrote:
>
> > Switch to the virtio_gpu_array_* helper workflow.
> >
> > Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> > ---
> > drivers/gpu/drm/virtio/virtgpu_drv.h | 4 ++--
> > drivers/gpu/drm/virtio/virtgpu_gem.c | 24 +++++++++++-------------
> > drivers/gpu/drm/virtio/virtgpu_vq.c | 10 ++++++----
> > 3 files changed, 19 insertions(+), 19 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h
> > b/drivers/gpu/drm/virtio/virtgpu_drv.h
> > index b1f63a21abb6..d99c54abd090 100644
> > --- a/drivers/gpu/drm/virtio/virtgpu_drv.h
> > +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
> > @@ -292,10 +292,10 @@ void virtio_gpu_cmd_context_destroy(struct
> > virtio_gpu_device *vgdev,
> > uint32_t id);
> > void virtio_gpu_cmd_context_attach_resource(struct virtio_gpu_device
> > *vgdev,
> > uint32_t ctx_id,
> > - uint32_t resource_id);
> > + struct virtio_gpu_object_array
> > *objs);
> > void virtio_gpu_cmd_context_detach_resource(struct virtio_gpu_device
> > *vgdev,
> > uint32_t ctx_id,
> > - uint32_t resource_id);
> > + struct virtio_gpu_object_array
> > *objs);
> > void virtio_gpu_cmd_submit(struct virtio_gpu_device *vgdev,
> > void *data, uint32_t data_size,
> > uint32_t ctx_id,
> > diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c
> > b/drivers/gpu/drm/virtio/virtgpu_gem.c
> > index 6baf64141645..e75819dbba80 100644
> > --- a/drivers/gpu/drm/virtio/virtgpu_gem.c
> > +++ b/drivers/gpu/drm/virtio/virtgpu_gem.c
> > @@ -111,19 +111,18 @@ int virtio_gpu_gem_object_open(struct drm_gem_object
> > *obj,
> > {
> > struct virtio_gpu_device *vgdev = obj->dev->dev_private;
> > struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
> > - struct virtio_gpu_object *qobj = gem_to_virtio_gpu_obj(obj);
> > - int r;
> > + struct virtio_gpu_object_array *objs;
> >
> > if (!vgdev->has_virgl_3d)
> > return 0;
> >
> > - r = virtio_gpu_object_reserve(qobj);
> > - if (r)
> > - return r;
> > + objs = virtio_gpu_array_alloc(1);
> > + if (!objs)
> > + return -ENOMEM;
> > + virtio_gpu_array_add_obj(objs, obj);
> >
> > virtio_gpu_cmd_context_attach_resource(vgdev, vfpriv->ctx_id,
> > - qobj->hw_res_handle);
> > - virtio_gpu_object_unreserve(qobj);
> > + objs);
> > return 0;
> > }
> >
> > @@ -132,19 +131,18 @@ void virtio_gpu_gem_object_close(struct
> > drm_gem_object *obj,
> > {
> > struct virtio_gpu_device *vgdev = obj->dev->dev_private;
> > struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
> > - struct virtio_gpu_object *qobj = gem_to_virtio_gpu_obj(obj);
> > - int r;
> > + struct virtio_gpu_object_array *objs;
> >
> > if (!vgdev->has_virgl_3d)
> > return;
> >
> > - r = virtio_gpu_object_reserve(qobj);
> > - if (r)
> > + objs = virtio_gpu_array_alloc(1);
> > + if (!objs)
> > return;
> > + virtio_gpu_array_add_obj(objs, obj);
> >
>
> This seems to call drm_gem_object_get. Without adding the objects to the
> vbuf, aren't we missing the corresponding drm_gem_object_put_unlocked?
Yes. Fixed.
> Some miscellaneous comments:
> 1) Maybe virtio_gpu_array can have it's own header and file? virtgpu_drv.h
> is getting rather big..
Longer-term it might move out anyway due to becoming a generic drm helper.
> 2) What data are you trying to protect with the additional references? Is
> it host side resources (i.e, the host GL texture or buffer object) or is it
> guest side resources (fences)?
Protect the (guest) gem object, specifically make sure the
bo->hw_res_handle stays valid.
cheers,
Gerd
next prev parent reply other threads:[~2019-07-04 12:00 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190702141903.1131-1-kraxel@redhat.com>
2019-07-02 14:18 ` [PATCH v6 01/18] drm/virtio: pass gem reservation object to ttm init Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 02/18] drm/virtio: switch virtio_gpu_wait_ioctl() to gem helper Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 03/18] drm/virtio: simplify cursor updates Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 04/18] drm/virtio: remove virtio_gpu_object_wait Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 05/18] drm/virtio: drop no_wait argument from virtio_gpu_object_reserve Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 06/18] drm/virtio: remove ttm calls from in virtio_gpu_object_{reserve,unreserve} Gerd Hoffmann
2019-07-03 18:02 ` Chia-I Wu
2019-07-04 11:10 ` Gerd Hoffmann
2019-07-04 19:17 ` Chia-I Wu
2019-07-05 8:53 ` Gerd Hoffmann
2019-07-07 5:30 ` Chia-I Wu
2019-07-02 14:18 ` [PATCH v6 07/18] drm/virtio: add virtio_gpu_object_array & helpers Gerd Hoffmann
2019-07-03 18:31 ` Chia-I Wu
2019-07-03 19:52 ` Chia-I Wu
2019-07-04 11:19 ` Gerd Hoffmann
2019-07-04 11:11 ` Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 08/18] drm/virtio: rework virtio_gpu_execbuffer_ioctl fencing Gerd Hoffmann
2019-07-03 18:49 ` Chia-I Wu
2019-07-04 11:25 ` Gerd Hoffmann
2019-07-04 18:46 ` Chia-I Wu
2019-07-11 2:35 ` Chia-I Wu
2019-07-02 14:18 ` [PATCH v6 09/18] drm/virtio: rework virtio_gpu_object_create fencing Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 10/18] drm/virtio: drop virtio_gpu_object_list_validate/virtio_gpu_unref_list Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 11/18] drm/virtio: switch from ttm to gem shmem helpers Gerd Hoffmann
2019-07-04 13:33 ` Emil Velikov
2019-07-17 6:04 ` Chia-I Wu
2019-07-02 14:18 ` [PATCH v6 12/18] drm/virtio: remove virtio_gpu_alloc_object Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 13/18] drm/virtio: drop virtio_gpu_object_{ref,unref} Gerd Hoffmann
2019-07-02 14:18 ` [PATCH v6 14/18] drm/virtio: rework virtio_gpu_transfer_from_host_ioctl fencing Gerd Hoffmann
2019-07-03 20:05 ` Chia-I Wu
2019-07-04 11:47 ` Gerd Hoffmann
2019-07-04 18:55 ` Chia-I Wu
2019-07-05 9:01 ` Gerd Hoffmann
2019-07-02 14:19 ` [PATCH v6 15/18] drm/virtio: rework virtio_gpu_transfer_to_host_ioctl fencing Gerd Hoffmann
2019-07-03 19:55 ` Chia-I Wu
2019-07-04 11:51 ` Gerd Hoffmann
2019-07-04 19:08 ` Chia-I Wu
2019-07-05 9:05 ` Gerd Hoffmann
2019-07-05 14:07 ` Gerd Hoffmann
2019-07-02 14:19 ` [PATCH v6 16/18] drm/virtio: rework virtio_gpu_cmd_context_{attach,detach}_resource Gerd Hoffmann
[not found] ` <CAAfnVBmKotCfkrM4hph4++FDrVUYR8WKpomP7Y0-aergqHTSyA@mail.gmail.com>
2019-07-04 12:00 ` Gerd Hoffmann [this message]
2019-07-02 14:19 ` [PATCH v6 17/18] drm/virtio: drop virtio_gpu_object_{reserve,unreserve} Gerd Hoffmann
2019-07-02 14:19 ` [PATCH v6 18/18] drm/virtio: add fence sanity check Gerd Hoffmann
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