Messages in this thread | | | Date | Wed, 18 Jun 2008 17:06:29 +0100 (BST) | From | "Maciej W. Rozycki" <> | Subject | Re: nmi_watchdog suspicious |
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On Tue, 17 Jun 2008, Cyrill Gorcunov wrote:
> Thanks a lot Maciej for comments! I've marked them. I'm not sure but it seems > I wrote a bit unclear /my english bad indeed/ ;) I mean - this say 'slipping' > (ie useless code executions) _was_ before the patch applied. Now it doesn't > slip on this since we do mention explicitly in which case there should be > alert counters reset. Other then that - will try to handle your notes. Thanks!
It will happen regardless if touch_nmi_watchdog() is called before the NMI watchdog has been set up in setup_nmi() or lapic_watchdog_init(). It may also happen during that window if an NMI is signalled without any NMI status bits set in the Port B register at 0x61 -- in theory that should not happen except for a broken configuration, but reality out there seems to be quite creative about breakage.
Maciej
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