[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: [PATCH] bind passthroug pci device interrupt pins to INTA
On 20/5/08 05:34, "He, Qing" <qing.he@xxxxxxxxx> wrote: > The original scheme is to use the interrupt pin in the physical pci > configuration space. However, the use of interrupt pins other than INTA > will likely cause problem when the number of assigned devices exceeds 8, > e.g. dev 3, INTB and dev 11, INTA share the same girq. In this case, one > machine may be left untracked and masked, any devices using the same > machine irq (including those owned by other domains) is then blocked. > > Just wonder if there is any need to expose multifunction devices (i.e. > have to use INTB, etc.) to the guest in the future. > > All comments and suggestions are welcomed. Could you set the INT line to the function number? FN0->INTA, FN1->INTB, ...? This would then work for multi-fn devices, yet still most devices have only fn0 and hence would use INTA as you desire. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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