Subject: Re: [ACPI] Re: [RFC 0/6] S3 SMP support with physcial CPU hotplug
From: Nigel Cunningham <ncunningham@cyclades.com>
Reply-To: ncunningham@cyclades.com
To: Andrew Morton <akpm@osdl.org>
Cc: Li Shaohua <shaohua.li@intel.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       ACPI List <acpi-devel@lists.sourceforge.net>, zwane@linuxpower.ca,
       len.brown@intel.com, pavel@suse.cz
In-Reply-To: <20050403193750.40cdabb2.akpm@osdl.org>
References: <1112580342.4194.329.camel@sli10-desk.sh.intel.com>
	 <20050403193750.40cdabb2.akpm@osdl.org>
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Message-Id: <1112608444.3757.17.camel@desktop.cunningham.myip.net.au>
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Date: Mon, 04 Apr 2005 19:54:04 +1000
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Hi.

On Mon, 2005-04-04 at 12:37, Andrew Morton wrote:
> Li Shaohua <shaohua.li@intel.com> wrote:
> >
> > The patches are against 2.6.11-rc1 with Zwane's CPU hotplug patch in -mm
> >  tree.
> 
> Should I merge that thing into mainline?  It seems that a few people are
> needing it.

Perhaps we should address the MTRR issue first.

I've had code in Suspend2 for quite a while (6 months+) that removes the
sysdev support for MTRRs and saves and restores them with CPU context,
thereby avoiding the smp_call-while-interrupts-disabled issue. Perhaps
it would be helpful here?

Nigel
-- 
Nigel Cunningham
Software Engineer, Canberra, Australia
http://www.cyclades.com
Bus: +61 (2) 6291 9554; Hme: +61 (2) 6292 8028;  Mob: +61 (417) 100 574

Maintainer of Suspend2 Kernel Patches http://suspend2.net

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