linux-kernel - Re: [PATCH v2 1/3] x86/mm: Remove flush_tlb() and flush_tlb_current

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Message-ID: <CALCETrVE1Pks3=_hewHE5u_oFgm832HrrkGmpxKTWmc+P7rqXA@mail.gmail.com>
Date:   Fri, 21 Apr 2017 14:59:54 -0700
From:   Andy Lutomirski <luto@...capital.net>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     X86 ML <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Borislav Petkov <bp@...en8.de>, Rik van Riel <riel@...hat.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Nadav Amit <namit@...are.com>, Michal Hocko <mhocko@...e.com>,
        Sasha Levin <sasha.levin@...cle.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v2 1/3] x86/mm: Remove flush_tlb() and flush_tlb_current_task()

On Fri, Apr 21, 2017 at 11:15 AM, Andy Lutomirski <luto@...nel.org> wrote:
> I was trying to figure out what how flush_tlb_current_task() would
> possibly work correctly if current->mm != current->active_mm, but I
> realized I could spare myself the effort: it has no callers except
> the unused flush_tlb() macro.  In fact, it doesn't even exist on
> !SMP builds.

Please disregard this patch for now.  It has issues.

---Andy