[lkml]   [2003]   [Aug]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] Export touch_nmi_watchdog
On Tue, Aug 05, 2003 at 09:15:54PM +0000, Arjan van de Ven wrote:
> On Tue, Aug 05, 2003 at 11:14:16PM +0200, Andi Kleen wrote:
> > > Otherwise this will just keep on expanding.
> >
> > It does expand on i386 exactly because the watchdog is disabled by default.
> >
> > Looks like a mistake to me. It should be on because having usable backtraces
> > on a deadlock/hang is useful enough that it outweights any other possible
> > disadvantages. That's especially true for kernels out there at user's boxes,
> > not just special debugging kernels run by developers.
> >
> > [if there should be any hardware where it doesn't work it should be blacklisted
> > there]
> the reason it's off is that certain IBM bioses corrupt the eax register on
> NMI's when they collide with smm stuff... You'd be surprised how
> tolerant x86 is against such corruptions... but not 100% :)

That could be catched by a dmi_scan.c entry ?


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:47    [W:0.086 / U:28.604 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site