Messages in this thread | | | From | Andi Kleen <> | Subject | Re: Perhaps a side effect regarding NMI returns | Date | Tue, 29 Nov 2011 12:09:47 -0800 |
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Linus Torvalds <torvalds@linux-foundation.org> writes:
Not sure what problem Steven thinks is there. Once you switched the stack any nesting is fine.
> I would suggest that the actual NMI handler itself should probably > never use that paranoid exit at all, and just always use a regular > iret. Screw scheduling and TIF checks.
The reason I added them originally is to prevent the race of remote kernel events being delayed for a long time. With Frederic's nohz work this will be more important in the future. Today it would be eventually picked up by the regular timer interrupts.
-Andi
-- ak@linux.intel.com -- Speaking for myself only
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