linux-kernel - Re: perf: multiplexing broken on amd fam16h?

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: <20150722201017.GZ25159@twins.programming.kicks-ass.net>
Date:	Wed, 22 Jul 2015 22:10:17 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Vince Weaver <vincent.weaver@...ne.edu>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: Re: perf: multiplexing broken on amd fam16h?

On Wed, Jul 22, 2015 at 03:59:28PM -0400, Vince Weaver wrote:
> On Wed, 22 Jul 2015, Peter Zijlstra wrote:
> 
> > On Wed, Jul 22, 2015 at 12:56:23PM -0400, Vince Weaver wrote:
> > > yes, with this applied the check_multiplex test passes.
> > 
> > Awesome, I'll try and write up a proper patch later tonight.
> 
> I'm just curious, it seems like sort of a generic fix, is there a reaon I 
> was only hitting the bug on AMD fam16h?

Not that I can think of.. maybe just consistently lucky on timings :/

>From what I can tell of the thing it _should_ fail on pretty much
everything.
--
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/