Re: [5/6] 2.6.21-rc2: known regressions

[Bill Davidsen]

Ingo Molnar wrote:
> * Adrian Bunk <bunk@xxxxxxxxx> wrote:
>
> > Subject    : i386: no boot with nmi_watchdog=1  (clockevents)
> > References : http://lkml.org/lkml/2007/2/21/208
> > Submitter  : Daniel Walker <dwalker@xxxxxxxxxx>
> > Caused-By  : Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> >              commit e9e2cdb412412326c4827fc78ba27f410d837e6e
> > Handled-By : Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> > Status     : problem is being debugged
>
> FYI, this is not a "wont boot" problem, this should be a "NMI watchdog 
> does not work" problem - which has far lower severity. Also, Thomas did 
> a fix for this which is now in -mm.
If a system normally runs a watchdog, and some do, then nmi would be 
forced on by grub.comf and the system would not boot. And if the system 
was counting on nmi to look for a hanging problem, "nmi does not work" 
would be a real problem if the failure was silent.

Actually, a lack of nmi would be worse than not booting, it would be a 
time bomb waiting for a bad moment to hang.

--
Bill Davidsen <davidsen@xxxxxxx>
  "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot
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