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SubjectRe: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking
On 09/07/2011 08:21 PM, Don Zickus wrote:
> >
> > How about, during NMI, save %rip to a per-cpu variable. Handle just
> > one cause. If, on the next NMI, we hit the same %rip, assume
> > back-to-back NMI has occured and now handle all causes.
>
> I had a similar idea a couple of months ago while debugging a continuous
> flow of back-to-back NMIs from a stress-test perf application and I
> couldn't get it to work. But let me try it again, because it does make
> sense as an optimization.
>
>

Great, thanks.

--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.



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