From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Nigel Cunningham <ncunningham@cyclades.com>
Cc: Nathan Lynch <ntl@pobox.com>,
linux-kernel@vger.kernel.org, Ben Collins <bcollins@debian.org>,
Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH] fix workqueue oops during cpu offline
Date: Thu, 05 Jan 2006 17:03:08 +1100 [thread overview]
Message-ID: <1136440988.4840.60.camel@localhost.localdomain> (raw)
In-Reply-To: <200601051558.14275.ncunningham@cyclades.com>
On Thu, 2006-01-05 at 15:58 +1000, Nigel Cunningham wrote:
> Hi.
>
> On Thursday 05 January 2006 14:58, Nathan Lynch wrote:
> > With 2.6.15, powerpc systems oops when cpu 0 is offlined. This is a
> > regression from 2.6.14, caused by commit id
> > bce61dd49d6ba7799be2de17c772e4c701558f14 ("Fix hardcoded cpu=0 in
> > workqueue for per_cpu_ptr() calls").
>
> So it's valid on ppc for cpu 0 to be taken offline? IIRC, trying that on my P4
> a while back did nothing. I think you'll find other places that assume that
> cpu 0 is always up (swsusp? ... I should check suspend2).
It's bogus, cpu0 can be put offline.
Ben.
next prev parent reply other threads:[~2006-01-05 6:02 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-05 4:58 [PATCH] fix workqueue oops during cpu offline Nathan Lynch
2006-01-05 5:58 ` Nigel Cunningham
2006-01-05 6:03 ` Benjamin Herrenschmidt [this message]
2006-01-05 14:30 ` Ben Collins
2006-01-05 21:45 ` Tony Luck
2006-01-05 22:42 ` Ashok Raj
2006-01-05 23:18 ` Nathan Lynch
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