From: ebiederm@xmission.com (Eric W. Biederman)
To: Dave Jones <davej@codemonkey.org.uk>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
alan@redhat.com
Subject: Re: [PATCH] Double x86 initialise fix.
Date: 26 Oct 2002 08:08:46 -0600 [thread overview]
Message-ID: <m1fzutl2c1.fsf@frodo.biederman.org> (raw)
In-Reply-To: <20021026134947.GA31349@suse.de>
Dave Jones <davej@codemonkey.org.uk> writes:
> On Sat, Oct 26, 2002 at 02:56:20PM +0100, Alan Cox wrote:
> > > For many moons, we've been executing identify_cpu()
> > > on the boot processor twice on SMP kernels.
> > > This is harmless, but has a few downsides..
> > > - Extra cruft in bootlog/dmesg
> > > - Spawns one too many timers for the mcheck handler
> > > - possibly other wasteful things..
> > >
> > > This seems to do the right thing here..
>
> Isn't this always the case on x86 ?
> /me waits to hear gory details of some IBM monster.
If it is the logical cpu id yes, then id 0 is always the bootstrap
cpu.
For apic id #0 to not be the bootstrap cpu you don't need an IBM
monster, there are several SMP machines with that property.
Eric
prev parent reply other threads:[~2002-10-26 14:04 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-26 12:42 [PATCH] Double x86 initialise fix davej
2002-10-26 13:56 ` Alan Cox
2002-10-26 13:49 ` Dave Jones
2002-10-26 13:57 ` Alan Cox
2002-10-26 15:00 ` Martin J. Bligh
2002-10-26 15:03 ` Martin J. Bligh
2002-10-26 15:46 ` Alan Cox
2002-10-28 19:57 ` Zwane Mwaikambo
2002-10-26 14:08 ` Eric W. Biederman [this message]
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