[PATCH v2 0/6] drm/gud: Use the shadow plane helper

[Noralf Trønnes via B4 Submission Endpoint]

Hi,

I have started to look at igt for testing and want to use CRC tests. To
implement support for this I need to move away from the simple kms
helper.

When looking around for examples I came across Thomas' nice shadow
helper and thought, yes this is perfect for drm/gud. So I'll switch to
that before I move away from the simple kms helper.

The async framebuffer flushing code path now uses a shadow buffer and
doesn't touch the framebuffer when it shouldn't. I have also taken the
opportunity to inline the synchronous flush code path and make this the
default flushing stategy.

Noralf.

Cc: Maxime Ripard <mripard at kernel.org>
Cc: Thomas Zimmermann <tzimmermann at suse.de>
Cc: dri-devel at lists.freedesktop.org
Signed-off-by: Noralf Trønnes <noralf at tronnes.org>

---
Changes in v2:
- Drop patch (Thomas):
  drm/gem: shadow_fb_access: Prepare imported buffers for CPU access
- Use src as variable name for iosys_map (Thomas)
- Prepare imported buffer for CPU access in the driver (Thomas)
- New patch: make sync flushing the default (Thomas)
- Link to v1: https://lore.kernel.org/r/20221122-gud-shadow-plane-v1-0-9de3afa3383e@tronnes.org

---
Noralf Trønnes (6):
      drm/gud: Fix UBSAN warning
      drm/gud: Don't retry a failed framebuffer flush
      drm/gud: Split up gud_flush_work()
      drm/gud: Prepare buffer for CPU access in gud_flush_work()
      drm/gud: Use the shadow plane helper
      drm/gud: Enable synchronous flushing by default

 drivers/gpu/drm/gud/gud_drv.c      |   1 +
 drivers/gpu/drm/gud/gud_internal.h |   1 +
 drivers/gpu/drm/gud/gud_pipe.c     | 222 ++++++++++++++++++-------------------
 3 files changed, 112 insertions(+), 112 deletions(-)
---
base-commit: 7257702951305b1f0259c3468c39fc59d1ad4d8b
change-id: 20221122-gud-shadow-plane-ae37a95d4d8d

Best regards,
-- 
Noralf Trønnes <noralf at tronnes.org>