From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 22 May 2001 20:06:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 22 May 2001 20:06:01 -0400 Received: from neon-gw.transmeta.com ([209.10.217.66]:34066 "EHLO neon-gw.transmeta.com") by vger.kernel.org with ESMTP id ; Tue, 22 May 2001 20:05:52 -0400 Message-ID: <3B0AFEC8.CDBF6C92@transmeta.com> Date: Tue, 22 May 2001 17:05:28 -0700 From: "H. Peter Anvin" X-Mailer: Mozilla 4.76 [en] (X11; U; Linux 2.4.5-pre1-zisofs i686) X-Accept-Language: en, sv, no, da, es, fr, ja MIME-Version: 1.0 To: Martin Knoblauch CC: "linux-kernel@vger.kernel.org" Subject: Re: [Patch] Output of L1,L2 and L3 cache sizes to /proc/cpuinfo In-Reply-To: <3B0A28C0.2FFFC935@TeraPort.de> <3B0A3794.15BDF9D6@TeraPort.de> <3B0A99E7.467CE534@transmeta.com> <3B0AFCFB.CAE7A145@teraport.de> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Martin Knoblauch wrote: > > > > If so, then that's their problem. We're not here to solve the problem of > > stupid system administrators. > > > > They may not be stupid, just mislead :-( When Intel created the "cpuid" > Feature some way along the P3 line, they gave a stupid reason for it and > created a big public uproar. As silly as I think that was (on both > sides), the term "cpuid" is tainted. Some people just fear it like hell. > Anyway. > Ummm... CPUID has been around since the P5, and even if you have one with the serial-number feature, Linux disables it. > > > - you would need a utility with root permission to analyze the cpuid > > > info. The > > > cahce info does not seem to be there in clear ascii. > > > > Bullsh*t. /dev/cpu/%d/cpuid is supposed to be mode 444 (world readable.) > > > > Thanks you :-) In any case, on my system (Suse 7.1) the files are mode > 400. > It's pointless since you can execute CPUID directly in user space. The device is there just to support CPU selection in a multiprocessor system. -hpa