Re: [Xen-devel] [PATCH] x86/nmi: lower initial watchdog frequency to avoid boot hangs

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 08.02.18 at 13:18, <andrew.cooper3@xxxxxxxxxx> wrote:
> We switch the NMI frequency to ~2Hz after the calibration, but that is
> after having run the BSP at 100Hz for a long period of time, and the APs
> at this rate for a short while.  Irrespective of the exact fix here, it
> is simply not a good idea to be running with this NMI frequency, other
> than possibly during the immediate calibration logic.

And I've previously agreed with this general statement. It's
just that the so far suggested workaround doesn't really do
what you say (and I'm pretty determined that the "possibly"
above should be removed).

Jan


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