Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756230AbYB2IzU (ORCPT ); Fri, 29 Feb 2008 03:55:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754212AbYB2IzJ (ORCPT ); Fri, 29 Feb 2008 03:55:09 -0500 Received: from gv-out-0910.google.com ([216.239.58.189]:56724 "EHLO gv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754180AbYB2IzI (ORCPT ); Fri, 29 Feb 2008 03:55:08 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:mime-version:content-type:content-transfer-encoding:content-disposition; b=qNwio0Gs/neJ9bywyib8aA5CBxqlKZ/JofLYjsgfbVUmnVT3C3L3WCN/hmM1/K/jmSkOdtFynvRtzaMU3zwj7VNHoPR6MM9DngDobu0L93OOpyFpRp+wNrm17W8NzW923DkRsyFL9UCeLVwzkTER4JtRQvAyfiUsWRBS8IlXjJI= Message-ID: Date: Fri, 29 Feb 2008 16:55:05 +0800 From: "Zhao Forrest" To: linux-kernel@vger.kernel.org Subject: Can Linux kernel handle unsynced TSC? Cc: kvm-devel@lists.sourceforge.net MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 556 Lines: 16 Sorry for reposting it. For example, 1 rdtsc() is invoked on CPU0 2 process is migrated to CPU1, and rdtsc() is invoked on CPU1 3 if TSC on CPU1 is slower than TSC on CPU0, can kernel guarantee that the second rdtsc() doesn't return a value smaller than the one returned by the first rdtsc()? Thanks, Forrest -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/