deprecation of drm-legacy-kmod

[Chris]

On 2020-08-24 15:21, Niclas Zeising wrote:
> [ cross posted across several mailing lists, please respect reply-to ]
> 
> Hi!
> 
> It is time to deprecate drm-legacy-kmod, since it is taking too much time to
> maintain and are holding off changes in other areas.
> 
> drm-legacy-kmod was created to aid in the transition to the LinuxKPI based
> graphics drivers, at a time when the new drivers only supported amd64.  
> Since
> then, the new drivers have been updated to support more architectures and 
> more
> GPUs, and the burden of maintaining drm-legacy-kmod has increased.  It 
> became
> apparent with the update of xorg-server to 1.20 that drm-legacy-kmod is too 
> old to
> work with certain aspects of the graphics stack, and it is also holding back
> changes in areas of the FreeBSD base system such as VM scaling and 
> optimization.
> The VM locking protocol needs to be changed, and to port those changes to 
> these
> drivers would require extensive reworking of its use of the FreeBSD VM 
> subsystem.
> This means it is time for it to go.
> 
> The driver will remain for a transition period.  For FreeBSD 13-CURRENT, 
> this will
> be fairly short, as there are changes to FreeBSD base that breaks the 
> drivers.
> For FreeBSD 12, the driver will remain a bit longer, to ease in transition.  
> On
> FreeBSD 12, there is also the option of using the graphics drivers in base,
> although those are supported on a best-effort basis only.
If this were pulled today. What are the ramifications? IOW what (A)GPUs would
no longer be available for use on FreeBSD? Does one need to join a Linux 
Graphics
list to find out what's currently supported? If so. What version of the Linux
kernel?

Thanks.

--Chris
> 
> Regards