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xen-users
RE: [Xen-users] 3D acceleration
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On Feb 24, 2006, at 4:46 AM, Petersson, Mats wrote:
There's been more than one discussion thread on this
subject, and the summary answer is:
- It's possible to do with a para-virtualized driver in
the guest - that is, a driver that takes the calls for graphics commands and
passes them to Dom0, where a "real" graphics driver executes the actual
intention of the call.
It is not trivial to write such a driver, but it's
nowhere near as hard as it would be to try to get a very
advanced native driver to work in a guest
environment.
Of course, if you have two different
graphics cards in the machine, Dom0 can be given one card, and one of
the guest domains can be given the other card, thus you can use the native
driver straight off (at least in fully virtualized mode).
Can you do this one card? Just have dom0 not have a video card, and
pass the only video card to domU? That's how I run all my servers
anyway, and it'd be awesome to use hardware acceleration on a "desktop
domU"...
I guess in theory, you could. You do have to make sure that Dom0 doesn't
recognise and/or grab the video card at any time, which is probably not very
difficult - but I don't know for sure.
Of course, you then also need to have a serial console or something along
those lines to be able to get to the console and do admin stuff once in a while
- hopefully not very often... ;-)
--
Mats
--
Luke
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