[Xen-devel] fooey. no interrupts.

[ron minnich <rminnich@xxxxxxxx>]

I've just realized a few days ago, when I get back to xen/plan 9, that I'm 
not getting interrupts after the first few. This with a very recent pull. 
What's amazing that it got as far as it did, but I am processing pending 
interrupt stuff in spllo() so that explains a lot. What I'm not getting is 
the asynchronous calls to evtchn_do_upcall. 

The mask is zero. I've enabled VIRQ_TIMER. Yet I'm only getting one set of
interrupts and it looks like no more. My loop for picking up events is
pretty much the same as the linux loop -- I just took that code. I am 
clearing out evtchn_upcall_pending and evtchn_pending_sel. I am clearing 
the mask to 0 at the end of the interrupt. 

What's a reasonable set of things to look for? I'm stumped.

ron

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