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Date: Mon, 7 Mar 2016 14:10:55 -0500
From: Steven Rostedt <rostedt@goodmis.org>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Jiri Kosina <jikos@kernel.org>, Sedat Dilek <sedat.dilek@gmail.com>,
        Alan Stern <stern@rowland.harvard.edu>, Tejun Heo <tj@kernel.org>,
        Lai Jiangshan <jiangshanlai@gmail.com>,
        Benjamin Tissoires <benjamin.tissoires@redhat.com>,
        Paul McKenney <paulmck@linux.vnet.ibm.com>,
        Andy Lutomirski <luto@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
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        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>
Subject: Re: [PATCH] usbhid: Fix lockdep unannotated irqs-off warning
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On Mon, 7 Mar 2016 10:04:21 -0800
Andy Lutomirski <luto@amacapital.net> wrote:


> > Exactly. The compiler may get away with this in userspace (maybe), but
> > for the kernel, it is definitely a show stopper. Especially if it knows
> > that an asm() may be called.  
> 
> It's broken for user code that fiddles with AC, too.

Which is why I added the "(maybe)" ;-)

-- Steve