Re: kern/53320 (Kernel with savagedrm does not build)

["David H. Gutteridge" <dhgutteridge%sympatico.ca@localhost>]

The following reply was made to PR kern/53320; it has been noted by GNATS.

From: "David H. Gutteridge" <dhgutteridge%sympatico.ca@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/53320 (Kernel with savagedrm does not build)
Date: Sat, 02 Jun 2018 17:58:47 -0400

 My two (Canadian) cents: if old and new drm are incompatible in a
 kernel config, what ramifications does this have for modules? Because
 right now, both i915drm and i915drmkms are built and installed as
 modules on amd64 and i386. Does this mean i915drm won't actually work
 as a module, either, with a stock kernel? (I'm not sure if there are
 any use cases left where the older version would be advantageous.)
 
 I ran into an issue with i915 support in general some months ago when
 installing 8.0_BETA on an older (Intel Core 2 era) amd64 machine. I
 never had time to fully investigate, but the stock GENERIC kernel was
 hanging on boot, and I had to (partially, it seems) disable i915 to
 get it to boot. Anyway, my point being, at the time, I looked at the
 drm(4) man page, and saw it was completely out of date. There's no
 mention whatsoever of the newer drm implementation. I'd made a note
 to offer something myself in this regard, but hadn't got around to it.
 I can also help to update the documentation if this is of use.
 
 Regards,
 
 Dave