From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754810AbcJLNht (ORCPT ); Wed, 12 Oct 2016 09:37:49 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:55424 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932765AbcJLNhm (ORCPT ); Wed, 12 Oct 2016 09:37:42 -0400 Date: Wed, 12 Oct 2016 15:35:09 +0200 (CEST) From: Thomas Gleixner To: Grzegorz Andrejczuk cc: mingo@redhat.com, hpa@zytor.com, x86@kernel.org, bp@suse.de, dave.hansen@linux.intel.com, linux-kernel@vger.kernel.org, lukasz.daniluk@intel.com, james.h.cownie@intel.com Subject: Re: [PATCH v2 2/4] Add enabling of the R3 MWAIT during boot for KNL In-Reply-To: <1476274585-21679-3-git-send-email-grzegorz.andrejczuk@intel.com> Message-ID: References: <1476274585-21679-1-git-send-email-grzegorz.andrejczuk@intel.com> <1476274585-21679-3-git-send-email-grzegorz.andrejczuk@intel.com> User-Agent: Alpine 2.20 (DEB 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 12 Oct 2016, Grzegorz Andrejczuk wrote: > + /* > + * Setting ring 3 MONITOR/MWAIT for all threads > + * when CPU is Xeon Phi Family x200 > + * This can be disabled with phir3mwait=disable cmdline switch. > + * We preserve the reserved values and set only 2nd bit. > + * Ref: > + * https://software.intel.com/en-us/blogs/2016/10/06/intel-xeon-phi-product-family-x200-knl-user-mode-ring-3-monitor-and-mwait Please don't put links like this into comments. They are stale before this hits Linus tree. Thanks, tglx