Re: More amd64 drmkms radeon

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

   Date: Fri, 15 Aug 2014 16:09:03 +0100 (BST)
   From: Robert Swindells <rjs%fdy2.co.uk@localhost>

   I get a panic in a call to munmap(2) but that may just be happening when
   the server is cleaning up from some other error.

There is a bug somewhere in the establishment of VM mappings for
radeon or ttm.  Not sure what it is yet, but it's probably in the code
I wrote to port ttm to NetBSD, in sys/external/bsd/drm2/ttm or in the
#ifdef NetBSD sections of

sys/external/bsd/drm2/dist/drm/radeon/radeon_ttm.c
sys/external/bsd/drm2/dist/drm/radeon/radeon_object.c
sys/external/bsd/drm2/dist/drm/ttm