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[Xen-devel] question: trap handler query....

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,

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