linux-kernel - Re: [PATCH 3/3] x86, perf: Add PEBS frontend profiling for Skylake

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]

Message-ID: <20150717233100.GN7380@tassilo.jf.intel.com>
Date:	Fri, 17 Jul 2015 16:31:00 -0700
From:	Andi Kleen <ak@...ux.intel.com>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Andi Kleen <andi@...stfloor.org>,
	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] x86, perf: Add PEBS frontend profiling for Skylake

On Fri, Jul 17, 2015 at 03:00:18PM -0700, Stephane Eranian wrote:
> Andi,
> 
> On Fri, Jul 17, 2015 at 2:19 PM, Andi Kleen <ak@...ux.intel.com> wrote:
> >> But then, the SDM is misleading. It is not describing what's
> >> implemented for SKL.
> >
> > Actually it has a list of valid values you can put into the various fields.
> > None of them have the bits set you're trying to set.
> >
> You are talking about the events (bit 0-7). I am talking about the bubble
> thresholds. I am okay with the event list for bits 0-7.

Fair enough. There's a one-off in the MSR table and table 18-54. The IDQ
bubble width is only 21:20. I'll ask for that to be fixed in both places
that document them.

Thanks.

-Andi
--
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/