CVS commit: src/sys/dev/drm

[matthew green <mrg%netbsd.org@localhost>]

Module Name:    src
Committed By:   mrg
Date:           Sun Mar 29 17:00:50 UTC 2009

Modified Files:
        src/sys/dev/drm: drmP.h

Log Message:
add a comment explaining DRM_NETBSD_ADDR2HANDLE/DRM_NETBSD_HANDLE2ADDR:

 * This hack strips the top bit from amd64 addresses, which avoid
 * udv_attach() returning NULL for "negative" offset.
 * A better hack would be to encode the offset of some kernel data
 * structure..

add a new DRM_HANDLE_NEEDS_MASK macro to check whether the above need to
be applied for various mapping types (_DRM_SHM and _DRM_SCATTER_GATHER.)


To generate a diff of this commit:
cvs rdiff -u -r1.32 -r1.33 src/sys/dev/drm/drmP.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.