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, 7 Aug 2001 16:23:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 7 Aug 2001 16:23:29 -0400 Received: from zikova.cvut.cz ([147.32.235.100]:19731 "EHLO zikova.cvut.cz") by vger.kernel.org with ESMTP id ; Tue, 7 Aug 2001 16:23:20 -0400 From: "Petr Vandrovec" Organization: CC CTU Prague To: Dave Jones Date: Tue, 7 Aug 2001 22:22:55 MET-1 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: RE: cpu not detected(x86) CC: Nico Schottelius , Linux Kernel Mailing List , andrew.grover@intel.com X-mailer: Pegasus Mail v3.40 Message-ID: <232AAD1EBC@vcnet.vc.cvut.cz> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 7 Aug 01 at 22:09, Dave Jones wrote: > > "The counter is incremented on every processor clock cycle, > even when the processor is halted by the HLT instruction or > the external STPCLK# pin" But not if clocks are completely stopped, not through STPCLK, but just stopped. > "The RDTSC instruction reads the time-stamp counter and is > _guaranteed_ to return a monotonically increasing unique value > _whenever_ executed, except for 64-bit wraparound". This only says that two consecutive RDTSC do not return same value. Best regards, Petr Vandrovec vandrove@vc.cvut.cz