linux-kernel - Re: [PATCH 1 of 4] mm: add a ptep_modify

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Message-ID: <20080602111339.GB18586@elte.hu>
Date:	Mon, 2 Jun 2008 13:13:39 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
	xen-devel <xen-devel@...ts.xensource.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Hugh Dickins <hugh@...itas.com>,
	Zachary Amsden <zach@...are.com>,
	kvm-devel <kvm-devel@...ts.sourceforge.net>,
	Virtualization Mailing List <virtualization@...ts.osdl.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 1 of 4] mm: add a ptep_modify_prot transaction
	abstraction


* Jeremy Fitzhardinge <jeremy@...p.org> wrote:

> +	/* Get the current pte state, but zero it out to make it
> +	   non-present, preventing the hardware from asynchronously
> +	   updating it. */

please use standard and consistent comment style, similar to:

> +/*
> + * Start a pte protection read-modify-write transaction, which
> + * protects against asynchronous hardware modifications to the pte.
> + * The intention is not to prevent the hardware from making pte
> + * updates, but to prevent any updates it may make from being lost.

	Ingo
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