Messages in this thread | | | Date | Mon, 21 May 2012 18:47:44 +0100 | From | Stefano Stabellini <> | Subject | Re: [PATCH] xen: do not map the same GSI twice |
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On Mon, 21 May 2012, Konrad Rzeszutek Wilk wrote: > On Mon, May 21, 2012 at 04:54:10PM +0100, Stefano Stabellini wrote: > > PV on HVM guests map GSIs into event channels; at restore time the > > event channels are resumed by restore_pirqs. > > Device drivers might try to register the same GSI again through ACPI at > > restore time, but the GSI has already been mapped and bound by > > restore_pirqs. > > Which means... what kind of error do we get without this patch?
Xen would print:
(XEN) irq.c:2235: dom4: pirq 23 or emuirq 28 already mapped
and waste a pirq
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