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Re: [Xen-devel] [PATCH] linux: fix IRQ handling for PV passthrough
| To: | Jan Beulich <jbeulich@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] linux: fix IRQ handling for PV passthrough |
| From: | Isaku Yamahata <yamahata@xxxxxxxxxxxxx> |
| Date: | Thu, 12 Feb 2009 15:29:17 +0900 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Wed, 11 Feb 2009 22:29:43 -0800 |
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On Wed, Feb 04, 2009 at 11:40:35AM +0000, Jan Beulich wrote: > For DomU-s registering PIRQ-s must be done separately, as they don't > use the IO-APIC code. > > Additionally make sure the IRQ chip doesn't get set twice (and the > event channel information overwritten) for an IRQ possibly in use by > more than one device. > > Obviously IA64 would need a similar fix, but I can't see where it would > need to be put. Thank you for taking care of IA64. evtchan_register_pirq() doesn't have any effect on IA64 because identity_mapped_irq() is defined to 1. So IA64 is ok without any fix. Maybe in theory it should be called for consistency, though. thanks, -- yamahata _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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