Purely conjecture, but I think the original locking inversion with the legacy page flip code between flipping and ttm's bo move function shoudn't exist anymore with atomic: With atomic the bo pinning and actual modeset commit is completely separated in the code patsh.
This annotation was originally added in
commit 060810d7abaabcab282e062c595871d661561400 Author: Ben Skeggs bskeggs@redhat.com Date: Mon Jul 8 14:15:51 2013 +1000
drm/nouveau: fix locking issues in page flipping paths
due to
commit b580c9e2b7ba5030a795aa2fb73b796523d65a78 Author: Maarten Lankhorst m.b.lankhorst@gmail.com Date: Thu Jun 27 13:48:18 2013 +0200
drm/nouveau: make flipping lockdep safe
Signed-off-by: Daniel Vetter daniel.vetter@intel.com Cc: Maarten Lankhorst m.b.lankhorst@gmail.com Cc: Ben Skeggs bskeggs@redhat.com Cc: Dave Airlie airlied@gmail.com Cc: nouveau@lists.freedesktop.org --- I might be totally wrong, so this definitely needs testing :-)
Cheers, Daniel --- drivers/gpu/drm/nouveau/nouveau_bo.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 7806278dce57..a7b2a9bb0ffe 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -776,7 +776,11 @@ nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr, return ret; }
- mutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING); + if (drm_drv_uses_atomic_modeset(drm->dev)) + mutex_lock(&cli->mutex); + else + mutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING); + ret = nouveau_fence_sync(nouveau_bo(bo), chan, true, intr); if (ret == 0) { ret = drm->ttm.move(chan, bo, &bo->mem, new_reg);
Op 02-08-2020 om 20:18 schreef Daniel Vetter:
Purely conjecture, but I think the original locking inversion with the legacy page flip code between flipping and ttm's bo move function shoudn't exist anymore with atomic: With atomic the bo pinning and actual modeset commit is completely separated in the code patsh.
This annotation was originally added in
commit 060810d7abaabcab282e062c595871d661561400 Author: Ben Skeggs bskeggs@redhat.com Date: Mon Jul 8 14:15:51 2013 +1000
drm/nouveau: fix locking issues in page flipping pathsdue to
commit b580c9e2b7ba5030a795aa2fb73b796523d65a78 Author: Maarten Lankhorst m.b.lankhorst@gmail.com Date: Thu Jun 27 13:48:18 2013 +0200
drm/nouveau: make flipping lockdep safeSigned-off-by: Daniel Vetter daniel.vetter@intel.com Cc: Maarten Lankhorst m.b.lankhorst@gmail.com Cc: Ben Skeggs bskeggs@redhat.com Cc: Dave Airlie airlied@gmail.com Cc: nouveau@lists.freedesktop.org
I might be totally wrong, so this definitely needs testing :-)
Cheers, Daniel
drivers/gpu/drm/nouveau/nouveau_bo.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 7806278dce57..a7b2a9bb0ffe 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -776,7 +776,11 @@ nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr, return ret; }
- mutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING);
- if (drm_drv_uses_atomic_modeset(drm->dev))
mutex_lock(&cli->mutex);- else
mutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING);- ret = nouveau_fence_sync(nouveau_bo(bo), chan, true, intr); if (ret == 0) { ret = drm->ttm.move(chan, bo, &bo->mem, new_reg);
Well if you're certain it works now. :)
Reviewed-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com
Ben, did you have a chance to look at this? -Daniel
On Mon, Aug 3, 2020 at 1:22 PM Maarten Lankhorst maarten.lankhorst@linux.intel.com wrote:
Op 02-08-2020 om 20:18 schreef Daniel Vetter:
Purely conjecture, but I think the original locking inversion with the legacy page flip code between flipping and ttm's bo move function shoudn't exist anymore with atomic: With atomic the bo pinning and actual modeset commit is completely separated in the code patsh.
This annotation was originally added in
commit 060810d7abaabcab282e062c595871d661561400 Author: Ben Skeggs bskeggs@redhat.com Date: Mon Jul 8 14:15:51 2013 +1000
drm/nouveau: fix locking issues in page flipping pathsdue to
commit b580c9e2b7ba5030a795aa2fb73b796523d65a78 Author: Maarten Lankhorst m.b.lankhorst@gmail.com Date: Thu Jun 27 13:48:18 2013 +0200
drm/nouveau: make flipping lockdep safeSigned-off-by: Daniel Vetter daniel.vetter@intel.com Cc: Maarten Lankhorst m.b.lankhorst@gmail.com Cc: Ben Skeggs bskeggs@redhat.com Cc: Dave Airlie airlied@gmail.com Cc: nouveau@lists.freedesktop.org
I might be totally wrong, so this definitely needs testing :-)
Cheers, Daniel
drivers/gpu/drm/nouveau/nouveau_bo.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 7806278dce57..a7b2a9bb0ffe 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -776,7 +776,11 @@ nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr, return ret; }
mutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING);
if (drm_drv_uses_atomic_modeset(drm->dev))mutex_lock(&cli->mutex);elsemutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING);ret = nouveau_fence_sync(nouveau_bo(bo), chan, true, intr); if (ret == 0) { ret = drm->ttm.move(chan, bo, &bo->mem, new_reg);Well if you're certain it works now. :)
Reviewed-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com
On Thu, Sep 17, 2020 at 3:15 PM Daniel Vetter daniel.vetter@ffwll.ch wrote:
Ben, did you have a chance to look at this?
Ping -Daniel
On Mon, Aug 3, 2020 at 1:22 PM Maarten Lankhorst maarten.lankhorst@linux.intel.com wrote:
Op 02-08-2020 om 20:18 schreef Daniel Vetter:
Purely conjecture, but I think the original locking inversion with the legacy page flip code between flipping and ttm's bo move function shoudn't exist anymore with atomic: With atomic the bo pinning and actual modeset commit is completely separated in the code patsh.
This annotation was originally added in
commit 060810d7abaabcab282e062c595871d661561400 Author: Ben Skeggs bskeggs@redhat.com Date: Mon Jul 8 14:15:51 2013 +1000
drm/nouveau: fix locking issues in page flipping pathsdue to
commit b580c9e2b7ba5030a795aa2fb73b796523d65a78 Author: Maarten Lankhorst m.b.lankhorst@gmail.com Date: Thu Jun 27 13:48:18 2013 +0200
drm/nouveau: make flipping lockdep safeSigned-off-by: Daniel Vetter daniel.vetter@intel.com Cc: Maarten Lankhorst m.b.lankhorst@gmail.com Cc: Ben Skeggs bskeggs@redhat.com Cc: Dave Airlie airlied@gmail.com Cc: nouveau@lists.freedesktop.org
I might be totally wrong, so this definitely needs testing :-)
Cheers, Daniel
drivers/gpu/drm/nouveau/nouveau_bo.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 7806278dce57..a7b2a9bb0ffe 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -776,7 +776,11 @@ nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr, return ret; }
mutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING);
if (drm_drv_uses_atomic_modeset(drm->dev))mutex_lock(&cli->mutex);elsemutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING);ret = nouveau_fence_sync(nouveau_bo(bo), chan, true, intr); if (ret == 0) { ret = drm->ttm.move(chan, bo, &bo->mem, new_reg);Well if you're certain it works now. :)
Reviewed-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
On Wed, 30 Sep 2020 at 00:52, Daniel Vetter daniel.vetter@ffwll.ch wrote:
On Thu, Sep 17, 2020 at 3:15 PM Daniel Vetter daniel.vetter@ffwll.ch wrote:
Ben, did you have a chance to look at this?
Ping -Daniel
On Mon, Aug 3, 2020 at 1:22 PM Maarten Lankhorst maarten.lankhorst@linux.intel.com wrote:
Op 02-08-2020 om 20:18 schreef Daniel Vetter:
Purely conjecture, but I think the original locking inversion with the legacy page flip code between flipping and ttm's bo move function shoudn't exist anymore with atomic: With atomic the bo pinning and actual modeset commit is completely separated in the code patsh.
This annotation was originally added in
commit 060810d7abaabcab282e062c595871d661561400 Author: Ben Skeggs bskeggs@redhat.com Date: Mon Jul 8 14:15:51 2013 +1000
drm/nouveau: fix locking issues in page flipping pathsdue to
commit b580c9e2b7ba5030a795aa2fb73b796523d65a78 Author: Maarten Lankhorst m.b.lankhorst@gmail.com Date: Thu Jun 27 13:48:18 2013 +0200
drm/nouveau: make flipping lockdep safeSigned-off-by: Daniel Vetter daniel.vetter@intel.com Cc: Maarten Lankhorst m.b.lankhorst@gmail.com Cc: Ben Skeggs bskeggs@redhat.com Cc: Dave Airlie airlied@gmail.com Cc: nouveau@lists.freedesktop.org
I might be totally wrong, so this definitely needs testing :-)
Cheers, Daniel
drivers/gpu/drm/nouveau/nouveau_bo.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 7806278dce57..a7b2a9bb0ffe 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -776,7 +776,11 @@ nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr, return ret; }
mutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING);
if (drm_drv_uses_atomic_modeset(drm->dev))mutex_lock(&cli->mutex);elsemutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING);ret = nouveau_fence_sync(nouveau_bo(bo), chan, true, intr); if (ret == 0) { ret = drm->ttm.move(chan, bo, &bo->mem, new_reg);Well if you're certain it works now. :)
Reviewed-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com
Acked-by: Ben Skeggs bskeggs@redhat.com
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau
On Wed, Sep 30, 2020 at 10:45:05AM +1000, Ben Skeggs wrote:
On Wed, 30 Sep 2020 at 00:52, Daniel Vetter daniel.vetter@ffwll.ch wrote:
On Thu, Sep 17, 2020 at 3:15 PM Daniel Vetter daniel.vetter@ffwll.ch wrote:
Ben, did you have a chance to look at this?
Ping -Daniel
On Mon, Aug 3, 2020 at 1:22 PM Maarten Lankhorst maarten.lankhorst@linux.intel.com wrote:
Op 02-08-2020 om 20:18 schreef Daniel Vetter:
Purely conjecture, but I think the original locking inversion with the legacy page flip code between flipping and ttm's bo move function shoudn't exist anymore with atomic: With atomic the bo pinning and actual modeset commit is completely separated in the code patsh.
This annotation was originally added in
commit 060810d7abaabcab282e062c595871d661561400 Author: Ben Skeggs bskeggs@redhat.com Date: Mon Jul 8 14:15:51 2013 +1000
drm/nouveau: fix locking issues in page flipping pathsdue to
commit b580c9e2b7ba5030a795aa2fb73b796523d65a78 Author: Maarten Lankhorst m.b.lankhorst@gmail.com Date: Thu Jun 27 13:48:18 2013 +0200
drm/nouveau: make flipping lockdep safeSigned-off-by: Daniel Vetter daniel.vetter@intel.com Cc: Maarten Lankhorst m.b.lankhorst@gmail.com Cc: Ben Skeggs bskeggs@redhat.com Cc: Dave Airlie airlied@gmail.com Cc: nouveau@lists.freedesktop.org
I might be totally wrong, so this definitely needs testing :-)
Cheers, Daniel
drivers/gpu/drm/nouveau/nouveau_bo.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 7806278dce57..a7b2a9bb0ffe 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -776,7 +776,11 @@ nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr, return ret; }
mutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING);
if (drm_drv_uses_atomic_modeset(drm->dev))mutex_lock(&cli->mutex);elsemutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING);ret = nouveau_fence_sync(nouveau_bo(bo), chan, true, intr); if (ret == 0) { ret = drm->ttm.move(chan, bo, &bo->mem, new_reg);Well if you're certain it works now. :)
Reviewed-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com
Acked-by: Ben Skeggs bskeggs@redhat.com
Can you pull this in through your tree and maybe give it a spin just to make sure? I don't really have nouveau hardware here.
Also it's entirely stand-alone, I was simply reviewing all the mutex_lock_nested we have in drm, and this one stuck out as probably not necessary anymore, at least with atomic.
I guess I can also just stuff it into drm-misc-next and if it blows up, figure out what to do then :-) -Daniel
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau
On Wed, 30 Sep 2020 at 19:37, Daniel Vetter daniel@ffwll.ch wrote:
On Wed, Sep 30, 2020 at 10:45:05AM +1000, Ben Skeggs wrote:
On Wed, 30 Sep 2020 at 00:52, Daniel Vetter daniel.vetter@ffwll.ch wrote:
On Thu, Sep 17, 2020 at 3:15 PM Daniel Vetter daniel.vetter@ffwll.ch wrote:
Ben, did you have a chance to look at this?
Ping -Daniel
On Mon, Aug 3, 2020 at 1:22 PM Maarten Lankhorst maarten.lankhorst@linux.intel.com wrote:
Op 02-08-2020 om 20:18 schreef Daniel Vetter:
Purely conjecture, but I think the original locking inversion with the legacy page flip code between flipping and ttm's bo move function shoudn't exist anymore with atomic: With atomic the bo pinning and actual modeset commit is completely separated in the code patsh.
This annotation was originally added in
commit 060810d7abaabcab282e062c595871d661561400 Author: Ben Skeggs bskeggs@redhat.com Date: Mon Jul 8 14:15:51 2013 +1000
drm/nouveau: fix locking issues in page flipping pathsdue to
commit b580c9e2b7ba5030a795aa2fb73b796523d65a78 Author: Maarten Lankhorst m.b.lankhorst@gmail.com Date: Thu Jun 27 13:48:18 2013 +0200
drm/nouveau: make flipping lockdep safeSigned-off-by: Daniel Vetter daniel.vetter@intel.com Cc: Maarten Lankhorst m.b.lankhorst@gmail.com Cc: Ben Skeggs bskeggs@redhat.com Cc: Dave Airlie airlied@gmail.com Cc: nouveau@lists.freedesktop.org
I might be totally wrong, so this definitely needs testing :-)
Cheers, Daniel
drivers/gpu/drm/nouveau/nouveau_bo.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 7806278dce57..a7b2a9bb0ffe 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -776,7 +776,11 @@ nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr, return ret; }
mutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING);
if (drm_drv_uses_atomic_modeset(drm->dev))mutex_lock(&cli->mutex);elsemutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING);ret = nouveau_fence_sync(nouveau_bo(bo), chan, true, intr); if (ret == 0) { ret = drm->ttm.move(chan, bo, &bo->mem, new_reg);Well if you're certain it works now. :)
Reviewed-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com
Acked-by: Ben Skeggs bskeggs@redhat.com
Can you pull this in through your tree and maybe give it a spin just to make sure? I don't really have nouveau hardware here.
Yeah, I can do that easily enough.
Ben.
Also it's entirely stand-alone, I was simply reviewing all the mutex_lock_nested we have in drm, and this one stuck out as probably not necessary anymore, at least with atomic.
I guess I can also just stuff it into drm-misc-next and if it blows up, figure out what to do then :-) -Daniel
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
On Thu, Oct 01, 2020 at 08:46:59AM +1000, Ben Skeggs wrote:
On Wed, 30 Sep 2020 at 19:37, Daniel Vetter daniel@ffwll.ch wrote:
On Wed, Sep 30, 2020 at 10:45:05AM +1000, Ben Skeggs wrote:
On Wed, 30 Sep 2020 at 00:52, Daniel Vetter daniel.vetter@ffwll.ch wrote:
On Thu, Sep 17, 2020 at 3:15 PM Daniel Vetter daniel.vetter@ffwll.ch wrote:
Ben, did you have a chance to look at this?
Ping -Daniel
On Mon, Aug 3, 2020 at 1:22 PM Maarten Lankhorst maarten.lankhorst@linux.intel.com wrote:
Op 02-08-2020 om 20:18 schreef Daniel Vetter: > Purely conjecture, but I think the original locking inversion with the > legacy page flip code between flipping and ttm's bo move function > shoudn't exist anymore with atomic: With atomic the bo pinning and > actual modeset commit is completely separated in the code patsh. > > This annotation was originally added in > > commit 060810d7abaabcab282e062c595871d661561400 > Author: Ben Skeggs bskeggs@redhat.com > Date: Mon Jul 8 14:15:51 2013 +1000 > > drm/nouveau: fix locking issues in page flipping paths > > due to > > commit b580c9e2b7ba5030a795aa2fb73b796523d65a78 > Author: Maarten Lankhorst m.b.lankhorst@gmail.com > Date: Thu Jun 27 13:48:18 2013 +0200 > > drm/nouveau: make flipping lockdep safe > > Signed-off-by: Daniel Vetter daniel.vetter@intel.com > Cc: Maarten Lankhorst m.b.lankhorst@gmail.com > Cc: Ben Skeggs bskeggs@redhat.com > Cc: Dave Airlie airlied@gmail.com > Cc: nouveau@lists.freedesktop.org > --- > I might be totally wrong, so this definitely needs testing :-) > > Cheers, Daniel > --- > drivers/gpu/drm/nouveau/nouveau_bo.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c > index 7806278dce57..a7b2a9bb0ffe 100644 > --- a/drivers/gpu/drm/nouveau/nouveau_bo.c > +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c > @@ -776,7 +776,11 @@ nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr, > return ret; > } > > - mutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING); > + if (drm_drv_uses_atomic_modeset(drm->dev)) > + mutex_lock(&cli->mutex); > + else > + mutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING); > + > ret = nouveau_fence_sync(nouveau_bo(bo), chan, true, intr); > if (ret == 0) { > ret = drm->ttm.move(chan, bo, &bo->mem, new_reg);
Well if you're certain it works now. :)
Reviewed-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com
Acked-by: Ben Skeggs bskeggs@redhat.com
Can you pull this in through your tree and maybe give it a spin just to make sure? I don't really have nouveau hardware here.
Yeah, I can do that easily enough.
Hi Ben,
I'm still hanging on this one, doesn't seem to have made it into drm-next. Got lost or still somewhere in a queue?
Thanks, Daniel
Ben.
Also it's entirely stand-alone, I was simply reviewing all the mutex_lock_nested we have in drm, and this one stuck out as probably not necessary anymore, at least with atomic.
I guess I can also just stuff it into drm-misc-next and if it blows up, figure out what to do then :-) -Daniel
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
dri-devel@lists.freedesktop.org
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Daniel Vetter -
Maarten Lankhorst