linux-kernel - Re: [PATCH] kconfig: remove EXPERT from CHECKPOINT

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Message-ID: <CAGXu5jJMBDd3-Yab78aYwQ1N6VG7=BjARoTF1pDygPhaWA9VNQ@mail.gmail.com>
Date:   Fri, 13 Jul 2018 21:44:15 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     "Eric W. Biederman" <ebiederm@...ssion.com>,
        Adrian Reber <adrian@...as.de>,
        LKML <linux-kernel@...r.kernel.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Pavel Emelyanov <xemul@...tuozzo.com>,
        Andrei Vagin <avagin@...tuozzo.com>,
        Hendrik Brueckner <brueckner@...ux.vnet.ibm.com>,
        Cyrill Gorcunov <gorcunov@...nvz.org>,
        Linux Containers <containers@...ts.linux-foundation.org>,
        Josh Triplett <josh@...htriplett.org>
Subject: Re: [PATCH] kconfig: remove EXPERT from CHECKPOINT_RESTORE

On Fri, Jul 13, 2018 at 1:55 PM, Andrew Morton
<akpm@...ux-foundation.org> wrote:
> On Thu, 12 Jul 2018 11:33:33 -0500 ebiederm@...ssion.com (Eric W. Biederman) wrote:
>> What is the value of disabling this functionality ever?
>>
>> Is there any reason why we don't just delete CONFIG_CHECKPOINT_RESTORE
>> entirely?
>
> For the vast number of Linux machines which aren't servers?  Check out
> some defconfigs - only one of arm's 119 defconfigs selects it.

Right, and I would bet the minification folks would like to keep it
out of their builds too. I think we should keep the config.

-Kees

-- 
Kees Cook
Pixel Security