linux-kernel - Re: [RFC PATCH 1/3] Documentation/x86: Add documentation for /proc/cpuinfo feature flags

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: <20200615184041.GA177504@kroah.com>
Date:   Mon, 15 Jun 2020 20:40:41 +0200
From:   "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
To:     "Luck, Tony" <tony.luck@...el.com>
Cc:     Borislav Petkov <bp@...en8.de>,
        "Park, Kyung Min" <kyung.min.park@...el.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "ak@...ux.intel.com" <ak@...ux.intel.com>,
        "Hansen, Dave" <dave.hansen@...el.com>,
        "Shankar, Ravi V" <ravi.v.shankar@...el.com>,
        "Neri, Ricardo" <ricardo.neri@...el.com>,
        Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
Subject: Re: [RFC PATCH 1/3] Documentation/x86: Add documentation for
 /proc/cpuinfo feature flags

On Mon, Jun 15, 2020 at 06:31:50PM +0000, Luck, Tony wrote:
> > In general, this should say something along the lines that /proc/cpuinfo
> > shows features which the kernel supports.
> >
> > "For a full list of CPUID flags which the CPU supports, use
> > tools/arch/x86/tools/cpuid/cpuid"
> >
> > :-)
> 
> Dave Hansen had suggested (offline) that we add a cpuid tool to the kernel sources.
> 
> I think that's a lot of (duplicated) work for someone to maintain.  The version of this
> tool at http://www.etallen.com/cpuid.html is close to 10K lines of code.

10k is nothing, have you looked at tools/perf/ ?  :)

greg k-h