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Re: [Xen-devel] trigger an interrupt in HVM
| To: | James Harper <james.harper@xxxxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] trigger an interrupt in HVM |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Fri, 22 Aug 2008 08:12:40 +0100 |
| Cc: | |
| Delivery-date: | Fri, 22 Aug 2008 00:13:30 -0700 |
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| Thread-topic: | [Xen-devel] trigger an interrupt in HVM |
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On 22/8/08 02:24, "James Harper" <james.harper@xxxxxxxxxxxxxxxx> wrote: > As an alternative, could I do an alloc_unbound (DOMID_SELF, DOMID_SELF) > and then bind_interdomain to it? Yes, it's just that that burns two event-channel ports, whereas an IPI port burns just one. > As another alternative, I have previously been using the asm 'int x' > instructions to call isr's... that could work too although of course > without the source code to windows it's hard to tell exactly what the > implications of that might be :) I wouldn't advise it -- the ISR will EOI the LAPIC even though the LAPIC did not deliver the interrupt. A safer way to go might be to self-IPI via the LAPIC. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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