linux-kernel - Re: [PATCH 1/3] x86/mm: only do a local TLB flush in ptep_set_access

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Message-ID: <508AE1A3.6030607@redhat.com>
Date:	Fri, 26 Oct 2012 15:16:51 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Ingo Molnar <mingo@...nel.org>, Andi Kleen <andi@...stfloor.org>,
	Michel Lespinasse <walken@...gle.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Mel Gorman <mgorman@...e.de>,
	Johannes Weiner <hannes@...xchg.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 1/3] x86/mm: only do a local TLB flush in ptep_set_access_flags()

On 10/26/2012 02:49 PM, Linus Torvalds wrote:
> On Fri, Oct 26, 2012 at 11:44 AM, Rik van Riel <riel@...hat.com> wrote:
>>
>> The function ptep_set_access_flags() is only ever invoked to upgrade
>> access permissions on a PTE
>
> Same deal. Please don't call these "access permissions". That confuses
> the issue.

I can change the text of the changelog, however it looks
like do_wp_page does actually use ptep_set_access_flags
to set the write bit in the pte...

I guess both need to be reflected in the changelog text
somehow?
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