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From: Andi Kleen <ak@suse.de>
To: Chuck Ebbert <76306.1226@compuserve.com>
Cc: Andrew Morton <akpm@osdl.org>,
	"gregoire.favre" <gregoire.favre@gmail.com>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Vojtech Pavlik <vojtech@suse.cz>,
	"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: 2.6.18-rc1-mm1 fails on amd64 (smp_call_function_single)
Date: Mon, 10 Jul 2006 04:25:07 +0200	[thread overview]
Message-ID: <200607100425.07750.ak@suse.de> (raw)
In-Reply-To: <200607092152_MC3-1-C488-18A8@compuserve.com>

On Monday 10 July 2006 03:49, Chuck Ebbert wrote:
> In-Reply-To: <20060709154445.60d6619c.akpm@osdl.org>
> 
> On Sun, 9 Jul 2006 15:44:45 -0700, Andrew Morton wrote:
> 
> > I meant, in smp.h:
> > 
> > #else /* CONFIG_SMP */
> > #define smp_call_function_single(cpu, fn, arg, x, y) fn(arg)
> > #endif        /* CONFIG_SMP */
> 
> But smp_call_function_single() generates an error if you try to call
> it on your own CPU, so that doesn't make sense.

I have a full patch to be mirrored out soon.

Your patch is still wrong because now it won't be initialized on the BP

> 
> I fixed it like this, because that register defaults to zero
> anyway and doesn't need initialization on CPU 0.
> 
> What I can't figure out is how this ever gets called on CPU 0
> during init, whether it's SMP or not.

The notifier is called from time.c

-Andi

  reply	other threads:[~2006-07-10  2:25 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-07-10  1:49 2.6.18-rc1-mm1 fails on amd64 (smp_call_function_single) Chuck Ebbert
2006-07-10  2:25 ` Andi Kleen [this message]
  -- strict thread matches above, loose matches on Subject: below --
2006-07-09  9:11 2.6.18-rc1-mm1 Andrew Morton
2006-07-09 11:49 ` 2.6.18-rc1-mm1 fails on amd64 (smp_call_function_single) Gregoire Favre
2006-07-09 13:00   ` Adrian Bunk
2006-07-09 14:11     ` Gregoire Favre
2006-07-09 20:39   ` Rafael J. Wysocki
2006-07-09 21:03     ` Andrew Morton
2006-07-09 22:37       ` Rafael J. Wysocki
2006-07-09 22:44         ` Andrew Morton
2006-07-10  0:08           ` Andi Kleen

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