Messages in this thread | | | Date | Wed, 14 Sep 2011 10:00:07 +0300 | From | Avi Kivity <> | Subject | Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking |
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On 09/13/2011 10:21 PM, Don Zickus wrote: > Or are you saying an NMI in an idle system will have the same %rip thus > falsely detecting a back-to-back NMI? > >
That's easy to avoid - insert an instruction zeroing the last nmi_rip somewhere before or after hlt. It's always okay to execute such an instruction (outside the nmi handler itself), since nmi_rip is meant to detect a "no instructions executed" condition.
-- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
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