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[Xen-devel] question: trap handler query....
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-devel] question: trap handler query.... |
| From: | Mukesh Rathor <mukesh.rathor@xxxxxxxxxx> |
| Date: | Tue, 22 Jan 2008 12:40:23 -0800 |
| Delivery-date: | Tue, 22 Jan 2008 12:42:29 -0800 |
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Hi all,I've a question. how would a cpu know from an IPI, if it's on a trap handler underneath. Looking at entry.S, I see that trap handlers push entry vector on stack, so I suppose one could walk down the frames (there's prob a better way). Moreover, what if the IPI comes right before the entry vector is pushed? Does x86 disable upon trap? Thanks for any help, Mukesh _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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