linux-kernel - Re: AMD Geode NOPL emulation for kernel 2.6.36-rc2

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

Date:	Wed, 8 Sep 2010 20:07:15 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Nick Lowe <nick.lowe@...il.com>
Cc:	Hans-Peter Jansen <hpj@...la.net>, linux-kernel@...r.kernel.org
Subject: Re: AMD Geode NOPL emulation for kernel 2.6.36-rc2

> And nobody has answered what happens when NOPLs are used to
> synchronise with something else? Surely that can lead to subtle, hard
> to debug breakage? Isn't that plain worse than refusing to run or
> breaking out of execution?

NOPL for synchronisation - of user space. I'd say thats sufficiently
unlikely not to care. It's still an improvement on crashing.

The other point you make is a good one but it's not clear that all the
proprietary apps for example will get recompiled, so to many users its
not a solution. Similarly the long term stable distros aren't going to
recompile everything and invalidate all their test data, so I doubt that
things like Centos will.

Alan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/