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Re: [Xen-devel] Question about evtchn_callback reentry
| To: | "Xu, Anthony" <anthony.xu@xxxxxxxxx>, Keir Fraser <keir@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Question about evtchn_callback reentry |
| From: | Keir Fraser <keir@xxxxxxxxxxxxx> |
| Date: | Wed, 20 Dec 2006 08:31:10 +0000 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx, xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Wed, 20 Dec 2006 00:31:21 -0800 |
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| Thread-topic: | [Xen-devel] Question about evtchn_callback reentry |
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On 20/12/06 3:03 am, "Xu, Anthony" <anthony.xu@xxxxxxxxx> wrote: >> Okay, so I remember now that of course the APIC divides these into 16 >> priority levels so that does rather restrict the maximum nesting. >> I'll be happy to consider adding prioritisation (or just complete >> disallow of nesting) for 3.0.5. > > Hi Keir, > > I did a experiment, > If we completely disallow of nesting. > Even dom0 can't boot. > > I suspected timer interrupt is blocked by other events. How did you implement nesting avoidance? It'll be a bit subtle to get right. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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