[Libdlo] [PATCH 2.6.32-rc7 1/1 v2] udlfb: add dynamic modeset support
bernie at plugable.com
Sun Nov 29 09:02:16 PST 2009
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.
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