linux-kernel - Re: [PATCH 2/4] perf: Allow guest PEBS for KVM owned counters

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:	Fri, 30 May 2014 18:17:20 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Andi Kleen <ak@...ux.intel.com>
Cc:	Andi Kleen <andi@...stfloor.org>, gleb@...nel.org,
	pbonzini@...hat.com, eranian@...gle.com, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] perf: Allow guest PEBS for KVM owned counters

On Fri, May 30, 2014 at 09:03:57AM -0700, Andi Kleen wrote:
> On Fri, May 30, 2014 at 09:31:53AM +0200, Peter Zijlstra wrote:
> > On Thu, May 29, 2014 at 06:12:05PM -0700, Andi Kleen wrote:
> > > From: Andi Kleen <ak@...ux.intel.com>
> > > 
> > > Currently perf unconditionally disables PEBS for guest.
> > > 
> > > Now that we have the infrastructure in place to handle
> > > it we can allow it for KVM owned guest events. For
> > > the perf needs to know that a event is owned by
> > > a guest. Add a new state bit in the perf_event for that.
> > > 
> > 
> > This doesn't make sense; why does it need to be owned?
> 
> Please read the complete patch kit

Please write coherent and self sustaining changelogs.

Content of type "application/pgp-signature" skipped