[PATCH v4 1/2] drm/fbdev: Move fbdev module parameters next to module init

Javier Martinez Canillas javierm at redhat.com
Mon Sep 28 11:09:23 PDT 2026


Thomas Zimmermann <tzimmermann at suse.de> writes:

Hello Thomas,

> Define the parameters for fbdev emulation in the source file with the
> module-initialization and exit code of drm_kms_helper.ko. The parameters
> control some aspects of DRM's fbdev emulation. Common usage looks like
>
>   drm_kms_helper.drm_fbdev_overalloc=200
>
> on the kernel's command line. This has been possible for many years
> and changing it would likely upset users.
>
> The emulation code is supposed to be moved into the module for DRM
> clients. Keeping the parameters in drm_kms_helper.ko avoids breaking
> systems the use them in the way described above.
>
> Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
> Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
> ---

Reviewed-by: Javier Martinez Canillas <javierm at redhat.com>

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat




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