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

[Noralf Trønnes]

Den 30.11.2022 20.26, skrev 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
> 

Applied to drm-misc-next, thanks for reviewing!

Noralf.