[Libdlo] [PATCH 2.6.32-rc7 1/1 v2] udlfb: add dynamic modeset support

[Bernie Thompson]

Is there any other feedback or requires changes on the dynamic-modeset
patch (v2) at the front of this thread?

There were two things which might have required an update, but it
looks like each should be handled on their own:

* Setting framebuffer pages reserved
This v2 patch does not set the reserve bit of framebuffer pages.
Apparently fbcon_cursor sometimes calls at interrupt context, so we
can't sleep or swap.  But we have worse problems in those
situations -- the existing code waits on a mutex on that codepath.
If we must deal with interrupt context
there, it may be better to explore deferred execution of a workqueue,
rather than locking down all pages all the time.  So the thought is we
need a more comprehensive solution here, which should be its own
patch. Any comments are welcome.

* check_var and set_par
There was some support for these functions in displaylink-mod which
aren't in the dynamic-modeset v2 patch.  I thought maybe we should put
them in.  But after looking further, some work and testing is needed,
so these should be their own (future) patch also.

Thanks,
Bernie