> > so what will do in the kernel? eat cpu cycles while polling? schedule to
> > other processes (much too heavyweight)? XFree86 does not wait after
> > queuing a command, it continues and prepares parameters for the next one,
> > and waits only if the queue is full.
> Well I'd assume thats how we'd handle it - I queue 50 operations, thats
> what 5000 clocks. Its not worth rescheduling for that.
sure, it's also not worth running this thing as it serializes the CPU and
the accelerator. The point behind XAA (check out XFree86 sources) is to
let the accelerator and the main CPU run in parallel.
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