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* [PATCH] drm/i915: tune down Y tiling scanout warning
@ 2013-04-04 16:13 Daniel Vetter
  2013-04-04 16:42 ` Chris Wilson
  2013-04-06 21:54 ` Daniel Vetter
  0 siblings, 2 replies; 6+ messages in thread
From: Daniel Vetter @ 2013-04-04 16:13 UTC (permalink / raw)
  To: Intel Graphics Development; +Cc: Daniel Vetter

Userspace can easily hit this and does since Ville added a new evil
igt testcase in:

commit 069e35e0fc3785faa562adcfd2dd7bbed4cb1dea
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date:   Mon Mar 4 15:34:06 2013 +0200

    kms_flip: Add flip-vs-bad-tiling test

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/i915/intel_display.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 1b2c744..7ac7de6 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1907,8 +1907,10 @@ intel_pin_and_fence_fb_obj(struct drm_device *dev,
 		alignment = 0;
 		break;
 	case I915_TILING_Y:
-		/* FIXME: Is this true? */
-		DRM_ERROR("Y tiled not allowed for scan out buffers\n");
+		/* Despite that we check this in framebuffer init userspace can
+		 * scre us over and change the tiling after the fact. Only
+		 * pinned buffers can't change their tiling. */
+		DRM_DEBUG_DRIVER("Y tiled not allowed for scan out buffers\n");
 		return -EINVAL;
 	default:
 		BUG();
-- 
1.7.10.4

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 6+ messages in thread

* Re: [PATCH] drm/i915: tune down Y tiling scanout warning
  2013-04-04 16:13 [PATCH] drm/i915: tune down Y tiling scanout warning Daniel Vetter
@ 2013-04-04 16:42 ` Chris Wilson
  2013-04-06 17:44   ` Daniel Vetter
  2013-04-06 21:54 ` Daniel Vetter
  1 sibling, 1 reply; 6+ messages in thread
From: Chris Wilson @ 2013-04-04 16:42 UTC (permalink / raw)
  To: Daniel Vetter; +Cc: Intel Graphics Development

On Thu, Apr 04, 2013 at 06:13:08PM +0200, Daniel Vetter wrote:
> Userspace can easily hit this and does since Ville added a new evil
> igt testcase in:

Scre? :-p
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH] drm/i915: tune down Y tiling scanout warning
  2013-04-04 16:42 ` Chris Wilson
@ 2013-04-06 17:44   ` Daniel Vetter
  2013-04-06 18:34     ` Chris Wilson
  0 siblings, 1 reply; 6+ messages in thread
From: Daniel Vetter @ 2013-04-06 17:44 UTC (permalink / raw)
  To: Chris Wilson, Daniel Vetter, Intel Graphics Development

On Thu, Apr 04, 2013 at 05:42:52PM +0100, Chris Wilson wrote:
> On Thu, Apr 04, 2013 at 06:13:08PM +0200, Daniel Vetter wrote:
> > Userspace can easily hit this and does since Ville added a new evil
> > igt testcase in:
> 
> Scre? :-p

Context is lost on me here ...
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH] drm/i915: tune down Y tiling scanout warning
  2013-04-06 17:44   ` Daniel Vetter
@ 2013-04-06 18:34     ` Chris Wilson
  0 siblings, 0 replies; 6+ messages in thread
From: Chris Wilson @ 2013-04-06 18:34 UTC (permalink / raw)
  To: Daniel Vetter; +Cc: Daniel Vetter, Intel Graphics Development

On Sat, Apr 06, 2013 at 07:44:45PM +0200, Daniel Vetter wrote:
> On Thu, Apr 04, 2013 at 05:42:52PM +0100, Chris Wilson wrote:
> > On Thu, Apr 04, 2013 at 06:13:08PM +0200, Daniel Vetter wrote:
> > > Userspace can easily hit this and does since Ville added a new evil
> > > igt testcase in:
> > 
> > Scre? :-p
> 
> Context is lost on me here ...

You invented a new word in the comments. Probably stepped on a loose bit
of scree.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre

^ permalink raw reply	[flat|nested] 6+ messages in thread

* [PATCH] drm/i915: tune down Y tiling scanout warning
  2013-04-04 16:13 [PATCH] drm/i915: tune down Y tiling scanout warning Daniel Vetter
  2013-04-04 16:42 ` Chris Wilson
@ 2013-04-06 21:54 ` Daniel Vetter
  2013-04-08  8:47   ` Daniel Vetter
  1 sibling, 1 reply; 6+ messages in thread
From: Daniel Vetter @ 2013-04-06 21:54 UTC (permalink / raw)
  To: Intel Graphics Development; +Cc: Daniel Vetter

Userspace can easily hit this and does since Ville added a new evil
igt testcase in:

commit 069e35e0fc3785faa562adcfd2dd7bbed4cb1dea
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date:   Mon Mar 4 15:34:06 2013 +0200

    kms_flip: Add flip-vs-bad-tiling test

v2: Fix the spelling in the added comment (Chris).

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/i915/intel_display.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 1b2c744..0e799ea 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1907,8 +1907,10 @@ intel_pin_and_fence_fb_obj(struct drm_device *dev,
 		alignment = 0;
 		break;
 	case I915_TILING_Y:
-		/* FIXME: Is this true? */
-		DRM_ERROR("Y tiled not allowed for scan out buffers\n");
+		/* Despite that we check this in framebuffer_init userspace can
+		 * screw us over and change the tiling after the fact. Only
+		 * pinned buffers can't change their tiling. */
+		DRM_DEBUG_DRIVER("Y tiled not allowed for scan out buffers\n");
 		return -EINVAL;
 	default:
 		BUG();
-- 
1.7.10.4

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply related	[flat|nested] 6+ messages in thread

* Re: [PATCH] drm/i915: tune down Y tiling scanout warning
  2013-04-06 21:54 ` Daniel Vetter
@ 2013-04-08  8:47   ` Daniel Vetter
  0 siblings, 0 replies; 6+ messages in thread
From: Daniel Vetter @ 2013-04-08  8:47 UTC (permalink / raw)
  To: Intel Graphics Development; +Cc: Daniel Vetter

On Sat, Apr 06, 2013 at 11:54:56PM +0200, Daniel Vetter wrote:
> Userspace can easily hit this and does since Ville added a new evil
> igt testcase in:
> 
> commit 069e35e0fc3785faa562adcfd2dd7bbed4cb1dea
> Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Date:   Mon Mar 4 15:34:06 2013 +0200
> 
>     kms_flip: Add flip-vs-bad-tiling test
> 
> v2: Fix the spelling in the added comment (Chris).
> 
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

I've picked this up for next with a reference to the bug QA filed.
-Daniel

> ---
>  drivers/gpu/drm/i915/intel_display.c |    6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 1b2c744..0e799ea 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -1907,8 +1907,10 @@ intel_pin_and_fence_fb_obj(struct drm_device *dev,
>  		alignment = 0;
>  		break;
>  	case I915_TILING_Y:
> -		/* FIXME: Is this true? */
> -		DRM_ERROR("Y tiled not allowed for scan out buffers\n");
> +		/* Despite that we check this in framebuffer_init userspace can
> +		 * screw us over and change the tiling after the fact. Only
> +		 * pinned buffers can't change their tiling. */
> +		DRM_DEBUG_DRIVER("Y tiled not allowed for scan out buffers\n");
>  		return -EINVAL;
>  	default:
>  		BUG();
> -- 
> 1.7.10.4
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2013-04-08  8:44 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-04-04 16:13 [PATCH] drm/i915: tune down Y tiling scanout warning Daniel Vetter
2013-04-04 16:42 ` Chris Wilson
2013-04-06 17:44   ` Daniel Vetter
2013-04-06 18:34     ` Chris Wilson
2013-04-06 21:54 ` Daniel Vetter
2013-04-08  8:47   ` Daniel Vetter

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