[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Re: APIC rework
On 17/11/2009 05:20, "Jeremy Fitzhardinge" <jeremy@xxxxxxxx> wrote: > On 11/16/09 19:45, Keir Fraser wrote: >> It's kind of a shame to need this though. Is there no way for the hypervisor >> to work out automatically whether an older dom0 is running? Or work out the >> trigger/level stuff for itself (after all it parses the relevant bios tables >> just like dom0)? > > If Xen can set the interrupt triggering by itself, why would it ever > need dom0 to do it? Couldn't it just preconfigure all the pins, and > then wait for dom0 to provide/request the pirq<->evtchn mapping? Very fair question. As long as Xen knows which GSI is being addressed (which I'm sure it can work out), the rest should follow. I don't think even things like PCI hotplug complicate this -- IOAPIC pins themselves are static. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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