lkml.org 
[lkml]   [2008]   [Oct]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [Bug #11569] Don't complain about disabled irqs when the system has paniced
Date
On Monday 06 October 2008 17:02, Andi Kleen wrote:
> On Sat, Oct 04, 2008 at 07:32:54PM +0200, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.26. Please verify if it still should be listed and let me know
> > (either way).
> >
> >
> > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11569
> > Subject : Don't complain about disabled irqs when the system has paniced
> > Submitter : Andi Kleen <andi@firstfloor.org>
> > Date : 2008-09-02 13:49 (33 days old)
> > References : http://marc.info/?l=linux-kernel&m=122036356127282&w=4
>
> The problem is actually worse than this description suggests. I updated
> the bugzilla entry now.
>
> The new smp_call_function() that is called from panic is quite unsuitable
> for this task:
> - It allocates memory (not a good idea in panic0
> - It complains about interrupt off
> - This whole thing breaks at least machine checks

Why doesn't it use something like nmi_shootdown_cpus on panic rather than
the (I guess less reliable and longer latency) smp_send_stop?


\
 
 \ /
  Last update: 2008-10-07 17:47    [W:0.098 / U:8.048 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site