From: Gerd Hoffmann <kraxel@suse.de>
To: Dave Jones <davej@redhat.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Gerd Hoffmann <kraxel@suse.de>, Andi Kleen <ak@suse.de>,
Linus Torvalds <torvalds@osdl.org>
Subject: Re: [PATCH] x86_64: x86_64 version of the smp alternative patch.
Date: Wed, 28 Jun 2006 09:54:00 +0200 [thread overview]
Message-ID: <44A23598.4020108@suse.de> (raw)
In-Reply-To: <20060627175741.GF1280@redhat.com>
> This has one behaviour slightly different to the i386 version however.
> If you boot an SMP machine it does this..
>
> SMP: Allowing 4 CPUs, 2 hotplug CPUs
> Initializing CPU#0
> CPU: Physical Processor ID: 0
> CPU: Processor Core ID: 0
> CPU0: Thermal monitoring enabled (TM1)
> SMP alternatives: switching to UP code
> ..
> SMP alternatives: switching to SMP code
> Booting processor 1/2 APIC 0x1
> Initializing CPU#1
i386 shows the same behavior btw, but with CPU_HOTPLUG=y only. "booting
the second CPU" is just a special case of "plugging in a CPU" then, that
is where the double-switch comes from.
cheers,
Gerd
--
Gerd Hoffmann <kraxel@suse.de>
http://www.suse.de/~kraxel/julika-dora.jpeg
prev parent reply other threads:[~2006-06-28 7:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200606261900.k5QJ0k9J028243@hera.kernel.org>
2006-06-27 17:57 ` [PATCH] x86_64: x86_64 version of the smp alternative patch Dave Jones
2006-06-28 7:54 ` Gerd Hoffmann [this message]
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