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Date:      Fri, 7 Aug 2015 09:28:58 -0500 (CDT)
From:      "Valeri Galtsev" <galtsev@kicp.uchicago.edu>
To:        "Dutch Ingraham" <stoa@gmx.us>
Cc:        "Quartz" <quartz@sneakertech.com>, "FreeBSD questions" <freebsd-questions@freebsd.org>
Subject:   Re: 64bit P4 vs mfsBSD
Message-ID:  <20924.128.135.52.4.1438957738.squirrel@cosmo.uchicago.edu>
In-Reply-To: <20150807012036.GB3683@slack>
References:  <55C3D434.6030005@sneakertech.com> <20150806220451.GA3683@slack> <55C3F50C.1000803@sneakertech.com> <20150807012036.GB3683@slack>

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On Thu, August 6, 2015 8:20 pm, Dutch Ingraham wrote:
> On Thu, Aug 06, 2015 at 08:00:12PM -0400, Quartz wrote:
>> >can you get a
>> >dmesg that will advise of the processor attributes?  You're looking for
>> >"LM," (long mode).  If that is there, it is a 64-bit processor.
>>
>> Does that work on linux? I can't get a dmesg off bsd until I figure out
>> how
>> to boot it. Also, where exactly am I looking? On a different machine
>> running
>> FreeBSD the only thing in dmesg I see that looks right is "AMD
>> Features=0x20100800<SYSCALL,NX,LM>". Is that the right line?
>>
> Seems everyone has a different concept of what should be in a dmesg.
> Linux may or may not have this info - my Slackware does not seem to, but
> it does have enough processor information (<dmesg | grep -i intel>) to
> search the web for that particular processor's attributes.
>
> If you have Linux running, <lscpu> will also work.

cat /proc/cpuinfo

comes to my mind for Linux. Never heard about <lscpu>. Is it one of
commands you can use on Linux box? What one need to install to have this
command?

Valeri

>
> Freebsd's dmesg at the "Features" and the "AMD Features" you cited will
> contain that info, and yes, that "LM" means long mode, or in other
> words, x86_64.
>
> A decent explaination is here:
>
> http://unix.stackexchange.com/questions/43539/what-do-the-flags-in-proc\
> -cpuinfo-mean
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++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
++++++++++++++++++++++++++++++++++++++++



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