linux-kernel - Re: frequent lockups in 3.18rc4

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Message-ID: <CA+55aFzvgxAMpP7kr9qrxyo82vSucQ5G+VByOgsgoyq6y5ExOA@mail.gmail.com>
Date:	Fri, 21 Nov 2014 12:00:05 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Andy Lutomirski <luto@...capital.net>,
	Steven Rostedt <rostedt@...dmis.org>,
	Tejun Heo <tj@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Don Zickus <dzickus@...hat.com>, Dave Jones <davej@...hat.com>,
	"the arch/x86 maintainers" <x86@...nel.org>
Subject: Re: frequent lockups in 3.18rc4

On Fri, Nov 21, 2014 at 11:51 AM, Thomas Gleixner <tglx@...utronix.de> wrote:
>
> This will break paravirt. set_pgd/set_pmd are paravirt functions.

I suspect we could use "set_pgd()" here instead of the direct access.
I didn't want to walk through all the levels to see exactly which
random op I needed to use.

                Linus
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