linux-kernel - Re: [PATCH] x86/mm: Add barriers and document switch

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Message-ID: <CALCETrU88S73w5SrNZbZUX3nuv1QnwfdGf2vhmYvrdSHMfiq6w@mail.gmail.com>
Date:	Tue, 2 Aug 2016 15:34:14 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Nadav Amit <nadav.amit@...il.com>
Cc:	Rafael Aquini <aquini@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"open list:MEMORY MANAGEMENT" <linux-mm@...ck.org>,
	X86 ML <x86@...nel.org>, Andy Lutomirski <luto@...nel.org>,
	Andrea Arcangeli <aarcange@...hat.com>, lwoodman@...hat.com,
	Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] x86/mm: Add barriers and document switch_mm()-vs-flush
 synchronization follow-up

On Tue, Aug 2, 2016 at 3:27 PM, Nadav Amit <nadav.amit@...il.com> wrote:
> Rafael Aquini <aquini@...hat.com> wrote:
>
>> While backporting 71b3c126e611 ("x86/mm: Add barriers and document switch_mm()-vs-flush synchronization")
>> we stumbled across a possibly missing barrier at flush_tlb_page().
>
> I too noticed it and submitted a similar patch that never got a response [1].
>
> Regards,
> Nadav
>
> [1] https://lkml.org/lkml/2016/7/15/598
>

Yeah, sorry, I've been busy.  I'll try to get to this soon.

-- 
Andy Lutomirski
AMA Capital Management, LLC