experimental 2.6.19 kernel preview.

[Dave Jones]

On Sun, Jan 07, 2007 at 10:07:41AM -0800, Arjan van de Ven wrote:
 > On Sun, 2007-01-07 at 12:37 -0500, Dave Jones wrote:
 > > On Sun, Jan 07, 2007 at 05:38:44AM -0800, Arjan van de Ven wrote:
 > >  > On Sun, 2007-01-07 at 10:22 +0100, dragoran wrote:
 > >  > > ok now tested on my core 2 duo laptop (also using x86_64).
 > >  > 
 > >  > > what does this mean?
 > >  > > I don't see it with 2.6.18 and I have not seen any problems because of 
 > >  > > it (yet)
 > >  > > 
 > >  > you need to disable nmi_watchdog (by putting nmi_watchdog=0)
 > >  > the code is just broken in recent kernels :(
 > >  > (there's people in my team at Intel working on fixing this)
 > >  > 
 > >  > Dave: please disable nmi_watchdog by default in FC x86-64 kernels.. at
 > >  > least until the worst bugs are fixed (but even then it makes little
 > >  > sense to have it enabled anyway)
 > > 
 > > x86-64 has had it default on for ages though, it's only recently
 > > that i386 changed to match.  It's odd that it's only now causing problems.
 > 
 > NMI-meets-SMM is a general not fun thing; and even on x86-64 it should
 > be off (see Ingo's posts for this, it's hitting issues there too).
 > Also the NMI watchdog code changed recently to be.. well buggy.
 > (which we're fixing in my team but still as general principle..)

I'm about to disappear for the afternoon.  If I get back and there's
a patch in my inbox it'd be much appreciated  (hint, hint ;-)

		Dave

-- 
http://www.codemonkey.org.uk