linux-kernel - Closing on the CR2 leak bug

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Message-ID: <531654D8.5040409@zytor.com>
Date:	Tue, 04 Mar 2014 14:34:00 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Vince Weaver <vincent.weaver@...ne.edu>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Seiji Aguchi <seiji.aguchi@....com>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Closing on the CR2 leak bug

So we need to get something into x86/urgent for the CR2 bug.

It seems like a no-brainer to do the hoisting patch, for which I prefer
the version proposed by Jiri Olsa which reads %cr2 and then passes it to
__do_page_fault() in a GPR:

http://lkml.kernel.org/r/20140228160526.GD1133@krava.brq.redhat.com

As fart as I can tell this should fix Vince's problem as well.

Anyone who objects to this?  Otherwise I will put it in tip:x86/urgent
tomorrow.

Do we need any more refinements this late in the -rc cycle?

	-hpa

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