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Re: [Xen-devel] spurious interrupts
| To: | "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] spurious interrupts |
| From: | "Jan Beulich" <jbeulich@xxxxxxxxxx> |
| Date: | Thu, 13 Apr 2006 13:42:59 +0200 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Thu, 13 Apr 2006 04:42:54 -0700 |
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>>> Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> 12.04.06 19:21:44 >>> >This happens definitely immediately after writing to the IO-APIC? There >is an ack_APIC_irq() not many instructions after that, and it would >make much more sense for the IRR flag to be set after that. :-) Yes, definitely there. I added (long) delays before masking and after masking (and also after ack-ing). The delay routine spins on reading the (expected) other redir entry, and the first iteration of it after the masking sees the ill irr bit turned on. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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