linux-kernel - Re: [PATCH v2 2/3] Mutually exclude cpu online and suspend/hibernate

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Message-ID: <20111013160602.GJ6281@google.com>
Date:	Thu, 13 Oct 2011 09:06:02 -0700
From:	Tejun Heo <tj@...nel.org>
To:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>, bp@...64.org,
	pavel@....cz, len.brown@...el.com, mingo@...e.hu,
	akpm@...ux-foundation.org, suresh.b.siddha@...el.com,
	lucas.demarchi@...fusion.mobi, rusty@...tcorp.com.au,
	rdunlap@...otime.net, vatsa@...ux.vnet.ibm.com,
	ashok.raj@...el.com, tigran@...azian.fsnet.co.uk,
	tglx@...utronix.de, hpa@...or.com, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH v2 2/3] Mutually exclude cpu online and
 suspend/hibernate

Hello,

On Thu, Oct 13, 2011 at 09:12:16PM +0530, Srivatsa S. Bhat wrote:
> Given that the microcode update hotplug optimization is going upstream,
> (https://lkml.org/lkml/2011/10/13/258), we know that whether we want to call
> it a bugfix or optimization, either way it *is* going to fix this bug.
> And this current patchset's mutual exclusion approach was also aimed at fixing
> the same bug since at the time it was written, discussion was still going on
> about which solution would be better.

I hate to sound like a broken recorder but the above patch isn't
strictly correct for hot-swap cases, right?  Let's please add
revalidation before pushing that upstream.  Rafael, did you already
take that patch?

Thanks.

-- 
tejun
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