Eric Anholt wrote:
On Wed, 2005-06-22 at 02:48 +0100, Dave Airlie wrote:
After talking with Ben a few days back, I'm getting the idea we are going
to need a user-space server process that does all of this, call it 0
(zero) as X-X = 0, this 0 process is started by init and has card specific
loadable modules, that just init the in-kernel driver with some info from
a file in /etc and maybe some other stuff.. you have it reading a kernel
netlink or something similiar for kernel mode change events from a kernel
side driver, (so your mode change API can still happen),
at startup it can just setup the memory manager, detect monitors (could
also wakeup every so often if needed for monitor hotplug detection), it
woudln't need to do an initial modeset I don't think, until someone else
comes along and asks for it.. so a userspace console would just be an app
like anything else.. things like Xegl and KAA/Shiny would use the same
basic infrastructure and not care ...
this process would run as root so you can then audit it, it would be much
smaller than X, and it would run in userspace so we wouldn't have to audit
it as much for doing evil things.. the less code in the kernel the less
code I have to review ;-)
This is the best thing I've heard in this discussion so far!
I'm still concerned by the handwaving involved in how apps are going to
interact with mode setting (yes, I do want to be able to have my video
game switch to 1280x1024), but I have nothing concrete to offer either.
I agree - this sounds like the most workable proposal so far.
Keith
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