linux-kernel - Re: [PATCH v2 1/7] rslib: Add tests for the encoder and decoder

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <alpine.DEB.2.21.1907092025530.1758@nanos.tec.linutronix.de>
Date:   Tue, 9 Jul 2019 20:27:09 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
cc:     Ferdinand Blomqvist <ferdinand.blomqvist@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>
Subject: Re: [PATCH v2 1/7] rslib: Add tests for the encoder and decoder

On Tue, 9 Jul 2019, Geert Uytterhoeven wrote:

> Hi Ferdinand,
> 
> On Thu, Jun 20, 2019 at 4:13 PM Ferdinand Blomqvist
> <ferdinand.blomqvist@...il.com> wrote:
> > A Reed-Solomon code with minimum distance d can correct any error and
> > erasure pattern that satisfies 2 * #error + #erasures < d. If the
> > error correction capacity is exceeded, then correct decoding cannot be
> > guaranteed. The decoder must, however, return a valid codeword or report
> > failure.
> 
> > Note that the tests take a couple of minutes to complete.
> 
> On which hardware? ;-)
> 
> JFTR, the test succeeded on m68k, after 6 hours and 12 minutes of runtime
> on an emulated Atari Falcon (ARAnyM hosted by an i7-4770).
> So far I have no plans to run it on bare metal.

It took about 4 minutes on a 10 year old lame desktop and was way faster on
one of the big irons.

Thanks,

	tglx