From: Ashok Raj <ashok.raj@intel.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Dave Jones <davej@redhat.com>,
Matthew Garrett <mgarrett@chiark.greenend.org.uk>,
Andrew Morton <akpm@osdl.org>, Ashok Raj <ashok.raj@intel.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Chuck Ebbert <76306.1226@compuserve.com>
Subject: Re: [patch -mm4] i386: __init should be __cpuinit
Date: Wed, 1 Feb 2006 11:15:54 -0800 [thread overview]
Message-ID: <20060201111554.A21287@unix-os.sc.intel.com> (raw)
In-Reply-To: <1138820183.3943.11.camel@localhost.localdomain>; from alan@lxorguk.ukuu.org.uk on Wed, Feb 01, 2006 at 06:56:22PM +0000
On Wed, Feb 01, 2006 at 06:56:22PM +0000, Alan Cox wrote:
> On Mer, 2006-02-01 at 11:03 -0500, Dave Jones wrote:
> > > For SMP systems, suspend/resume "unplugs" all non-boot CPUs before
> > > executing the suspend code. I don't recall any SMP cyrix systems, but
> > > it's potentially something to consider.
> >
> > There weren't any. Until AMD's Athlon MPs, Intel had the only
> > SMP x86 afair.
>
> Several vendors demonstrated OpenMP designs including Cyrix. Nothing
> production and nothing we support.
In order to support logical cpu hotplug, you dont need any special hw, as long
as you has some SMP box. Sometimes its just a little bit more than
moving __init to __cpuinit. A lot of these references were not changed
just speculatively to ensure when the need is there, someone will change and
test those as well.
Chuck, would it be possible for you also test cpu hotplug for the ones you
are interested in and accompany the related changes if there are more
as separate patches? (Documentation now has a howto on cpu hotplug)
That would make it more useful for this exersise.
--
Cheers,
Ashok Raj
- Open Source Technology Center
next prev parent reply other threads:[~2006-02-01 19:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-01 4:49 [patch -mm4] i386: __init should be __cpuinit Chuck Ebbert
2006-02-01 5:33 ` Dave Jones
2006-02-01 8:05 ` Matthew Garrett
2006-02-01 16:03 ` Dave Jones
2006-02-01 18:56 ` Alan Cox
2006-02-01 19:15 ` Ashok Raj [this message]
2006-02-02 21:34 ` Pavel Machek
2006-02-02 21:39 ` Dave Jones
-- strict thread matches above, loose matches on Subject: below --
2006-02-01 8:03 Chuck Ebbert
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