linux-kernel - Re: [PATCH v3 01/11] x86/mm: Don't reenter flush_tlb_func

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Date:   Wed, 21 Jun 2017 10:01:51 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Andy Lutomirski <luto@...nel.org>
cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Borislav Petkov <bp@...en8.de>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mel Gorman <mgorman@...e.de>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        Nadav Amit <nadav.amit@...il.com>,
        Rik van Riel <riel@...hat.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH v3 01/11] x86/mm: Don't reenter flush_tlb_func_common()

On Tue, 20 Jun 2017, Andy Lutomirski wrote:
> Nadav noticed the reentrancy issue in a different context, but
> neither of us realized that it caused a problem yet.
> 
> Cc: Nadav Amit <nadav.amit@...il.com>
> Cc: Dave Hansen <dave.hansen@...el.com>
> Reported-by: "Levin, Alexander (Sasha Levin)" <alexander.levin@...izon.com>
> Fixes: 3d28ebceaffa ("x86/mm: Rework lazy TLB to track the actual loaded mm")
> Signed-off-by: Andy Lutomirski <luto@...nel.org>

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>