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Date: Wed, 20 Nov 2013 17:33:13 +0100
From: Peter Zijlstra <peterz@infradead.org>
To: Arjan van de Ven <arjan@linux.intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>, lenb@kernel.org,
        rjw@rjwysocki.net, linux-acpi@vger.kernel.org,
        linux-kernel@vger.kernel.org, shaohua.li@intel.com,
        rui.zhang@intel.com, Mike Galbraith <bitbucket@online.de>,
        Ingo Molnar <mingo@kernel.org>, Thomas Gleixner <tglx@linutronix.de>,
        hpa@zytor.com
Subject: Re: [PATCH] x86, acpi, idle: Restructure the mwait idle routines
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On Wed, Nov 20, 2013 at 08:24:47AM -0800, Arjan van de Ven wrote:
> On 11/20/2013 2:58 AM, Peter Zijlstra wrote:
> >So pretty silly actually; you cannot do a store (any store) in between
> >monitor and mwait.
> 
> you can
> just not to the cacheline you are watching (or things that alias with that)

Ah indeed, the thread_info::status is in the same cacheline.