linux-kernel - Re: [PATCH RFC] ioctl based CAT interface

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: <20151116195219.GA317@amt.cnet>
Date:	Mon, 16 Nov 2015 17:52:19 -0200
From:	Marcelo Tosatti <mtosatti@...hat.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Luiz Capitulino <lcapitulino@...hat.com>,
	Vikas Shivappa <vikas.shivappa@...el.com>,
	Tejun Heo <tj@...nel.org>, Yu Fenghua <fenghua.yu@...el.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC] ioctl based CAT interface

On Mon, Nov 16, 2015 at 03:42:08PM +0100, Thomas Gleixner wrote:
> On Mon, 16 Nov 2015, Marcelo Tosatti wrote:
> > You need a task to be part of two cgroups at one time, 
> > to support the following configuration:
> > 
> > Task-A: 70% of cache reserved exclusively (reservation-0).
> >         20% of cache reserved (reservation-1).
> > 
> > Task-B: 20% of cache reserved (reservation-1).
> 
> Why would such a configuration be desired?
> 
> Thanks,
> 
> 	tglx

The HW supports cache sharing, its a HW feature.

Makes sense to share reserved cache between threads of an application
that for example share a library.

--
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/