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DateMon, 25 Jun 2007 15:06:20 +0200
FromBjörn Steinbrink <>
SubjectRe: [patch, 2.6.22-rc6] fix nmi_watchdog=2 bootup hang
On 2007.06.25 08:49:05 -0400, Jeremy Fitzhardinge wrote:
> Björn Steinbrink wrote:
> >On 2007.06.25 10:26:52 +0200, Ingo Molnar wrote:> > > >>* Ingo Molnar <mingo@elte.hu> wrote:
> >>
> >> 
> >>>the winner is ...> >>>> >>> f8822f42019eceed19cc6c0f985a489e17796ed8 is first bad commit
> >>> commit f8822f42019eceed19cc6c0f985a489e17796ed8> >>> Author: Jeremy Fitzhardinge <jeremy@goop.org>
> >>> Date:   Wed May 2 19:27:14 2007 +0200
> >>>
> >>>    [PATCH] i386: PARAVIRT: Consistently wrap paravirt ops callsites to 
> >>>    make them patchable
> >>> 
> >>and of course i'm happy to test any patch that is simpler than the 
> >>brutal revert i sent.
> >> > >> >wrmsrl() looks broken, dropping the upper 32bits of the value to be
> >written. Does this help?> > 
> 
> Crap.  That's embarrassing.  Does it help, because it seems likely?  
> (Esp since Ingo didn't even have CONFIG_PARAVIRT enabled, so most of his 
> revert would have been dead code anyway.)

He has. The config Ingo sent was for x86_64, which (AFAICT) doesn't have
CONFIG_PARAVIRT, so the config was unfortunately useless. But his
bootlog tells us:

Booting paravirtualized kernel on bare hardware

Björn
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