Re: i915drm broken in 9.1?

[Taylor R Campbell <riastradh%NetBSD.org@localhost>]

> Date: Fri, 20 Dec 2024 11:05:29 -0500 (EST)
> From: Mouse <mouse%Rodents-Montreal.ORG@localhost>
> 
> At work, we just tried to build a 9.1 kernel with the i915drm line
> uncommented (we also left i915drmkms uncommented).  The kernel build
> exploded badly - it looks to me as though some file is expecting u8 to
> be typedeffed but doesn't bother making sure it is.

Pre-KMS DRM (like i915drm) and DRM/KMS (like i915drmkms) are
definitely not expected to coexist in the same kernel.

> The i915drm line is present in both GENERIC and ALL, but it's commented
> in both (yes, even in ALL).  Is it expected to work, or is this
> something that should have been deleted entirely?

It might work if you're lucky, once you disable all the DRM/KMS
drivers, but it has undoubtedly bitrotted.  The legacy pre-KMS DRM
code base was kept around mainly for some ancient radeon device (like
r100 or something) that broke in the DRM/KMS driver, and maybe for
Intel i8xx, I don't remember.

What's your motivation for using the i915drm driver?