linux-kernel - Re: [RFC PATCH 0/2] Resctrl

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: <ZMCEjZgyi5oI+KWh@x1>
Date:   Tue, 25 Jul 2023 19:27:25 -0700
From:   Drew Fustini <dfustini@...libre.com>
To:     Tony Luck <tony.luck@...el.com>
Cc:     James Morse <james.morse@....com>,
        "Yu, Fenghua" <fenghua.yu@...el.com>,
        "Chatre, Reinette" <reinette.chatre@...el.com>,
        Babu Moger <Babu.Moger@....com>,
        Peter Newman <peternewman@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        H Peter Anvin <hpa@...or.com>,
        "shameerali.kolothum.thodi@...wei.com" 
        <shameerali.kolothum.thodi@...wei.com>,
        D Scott Phillips OS <scott@...amperecomputing.com>,
        "carl@...amperecomputing.com" <carl@...amperecomputing.com>,
        "lcherian@...vell.com" <lcherian@...vell.com>,
        "bobo.shaobowang@...wei.com" <bobo.shaobowang@...wei.com>,
        "tan.shaopeng@...itsu.com" <tan.shaopeng@...itsu.com>,
        "xingxin.hx@...nanolis.org" <xingxin.hx@...nanolis.org>,
        "baolin.wang@...ux.alibaba.com" <baolin.wang@...ux.alibaba.com>,
        Jamie Iles <quic_jiles@...cinc.com>,
        Xin Hao <xhao@...ux.alibaba.com>,
        "Pitre, Nicolas" <npitre@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        "aricciardi@...libre.com" <aricciardi@...libre.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "patches@...ts.linux.dev" <patches@...ts.linux.dev>
Subject: Re: [RFC PATCH 0/2] Resctrl - rewrite (WIP)

On Thu, Jun 29, 2023 at 05:06:45PM -0700, Tony Luck wrote:
> On Tue, Jun 27, 2023 at 04:33:52PM +0000, Luck, Tony wrote:
> > I've made some significant changes since I posted those patches. I pushed
> > the latest version to:
> > 
> > git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux.git    resctrl2_v64
> 
> I just pushed one big commit with all the bits I've updated so far
> this week. Fixes some serious issues as well as general cleanup.
> 
> HEAD is now:
> 
> afb7cdd4d640 resctrl2: Many cleanups, fixes, and new functionality
> 
> If you've started writing your own architecture specific modules there
> are some small interface changes. Most should be found by the compiler
> barfing, but the new ".reset()" resource function called during unmount
> of /sys/fs/resctrl might be less obvious.
> 
> -Tony

I have access to a Xeon Silver 4310 machine which reports to have
cat_l3, cqm_mbm_local, cqm_mbm_total and mba.

I would like to test resctrl2 on it so I can better understand how it
works. I think that will help me understand how to adapt the RISC-V
CBQRI resctrl proof-of-concept to use resctrl2.

Would you be able to provide an example of how you loaded the necessary
resctrl2 kernel modules?

Also, is resctrl2_v65rc1 the latest to branch to test?

Thank you,
Drew