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

[Greg KH]

On Wed, Nov 30, 2022 at 08:26:48PM +0100, Noralf Trønnes via B4 Submission Endpoint wrote:
> 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

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>