linux-kernel - Re: Can KEY_DH_OPERATIONS become tristate? (was: Re: Kernel 5.3.0 stuck during boot on Amiga)

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Message-ID: <CAMuHMdU_2RWFc=xs3tM38Nt_44k3dp5MMuKAT2MacyuCbO+1Hw@mail.gmail.com>
Date:   Wed, 18 Sep 2019 18:18:47 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     David Howells <dhowells@...hat.com>
Cc:     John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
        Michael Schmitz <schmitzmic@...il.com>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        Mat Martineau <mathew.j.martineau@...ux.intel.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>, keyrings@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Can KEY_DH_OPERATIONS become tristate? (was: Re: Kernel 5.3.0
 stuck during boot on Amiga)

Hi David,

On Wed, Sep 18, 2019 at 5:54 PM David Howells <dhowells@...hat.com> wrote:
> Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
> > CC crypto keys people
> >
> > TL;DR: CONFIG_CRYPTO_DH=y is reported to cause boot delays of several
> > minutes on old and slow machines.
>
> Why is it doing that?  It doesn't do anything unless it is called, so
> something must be calling it.

I don't know.  Enabling initcall_debug shows that dh_init() takes a very long
time.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds