Messages in this thread | | | Subject | [PATCH 0/2] xen pvfb: Para-virtual framebuffer, keyboard and pointer | From | Markus Armbruster <> | Date | Thu, 21 Feb 2008 10:42:03 +0100 |
| |
This is a pair of Xen para-virtual frontend device drivers: drivers/video/xen-fbfront.c provides a framebuffer, and drivers/input/xen-kbdfront provides keyboard and mouse.
The backends run in dom0 user space.
I started with the Xen version at http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/ca05cf1a9bdc
Differences to that Xen version, for those who care:
* Rewritten on top of fb deferred I/O
* IRQ handler names visible in /proc and /sys match the driver names.
* Use framebuffer helper functions appropriate for framebuffer in system RAM.
* write() refreshes the framebuffer properly.
* off-by-one height of some screen refreshs fixed.
* Crash when register_framebuffer() fails fixed.
* Test for empty ring in input_handler() fixed.
* Deadlock in xen-kbdfront resume fixed.
* General clean up.
I have a step-by-step patch series from that Xen version to my version, if anybody is interested. Might be useful for reviewers familiar with the Xen version.
The patch consists of two parts:
1. fbdev: Make deferred I/O work as advertized
I need fb deferred I/O, but is utterly broken. A fix has been floating around on linux-fbdev-devel as part of a larger patch, which as far as I know has not been merged anywhere, yet. This is just the fix.
2. xen pvfb: Para-virtual framebuffer, keyboard and pointer driver
The actual drivers.
| |