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

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Message-ID: <20180714191030.GA17877@localhost>
Date:   Sat, 14 Jul 2018 12:10:31 -0700
From:   Josh Triplett <josh@...htriplett.org>
To:     "Eric W. Biederman" <ebiederm@...ssion.com>
Cc:     Kees Cook <keescook@...omium.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        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>
Subject: Re: [PATCH] kconfig: remove EXPERT from CHECKPOINT_RESTORE

On Sat, Jul 14, 2018 at 02:04:46PM -0500, Eric W. Biederman wrote:
> For a config option that no one has come forward with an actual real
> world use case for disabling, that cost seems much too high.

The real-world use case is precisely as stated: code size, both storage
and RAM.

I regularly encounter systems I'd *like* to put Linux in that have
around 1MB of storage and 1MB of RAM, or even less.