[Xen-devel] my interrupt issue

[ron minnich <rminnich@xxxxxxxx>]

turned out to be interesting. The Plan 9 kernel is pre-emptible (and has
been for a while). The only kind of interrupt that won't get preempted is
the clock or timer. The key is that you need to make sure that the
VIRQ_TIMER gets mapped to the plan 9 timer irq. Once I realized that, I'm
getting much further with things working right.

In fact the boot process is working until it times out on no enet packets, 
which is actually fine -- lots of kprocs and procs running and doing the 
right thing now.

ron

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