From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932268AbcA0KKU (ORCPT ); Wed, 27 Jan 2016 05:10:20 -0500 Received: from www.linutronix.de ([62.245.132.108]:42209 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932139AbcA0KKI (ORCPT ); Wed, 27 Jan 2016 05:10:08 -0500 Date: Wed, 27 Jan 2016 11:09:04 +0100 (CET) From: Thomas Gleixner To: Andy Lutomirski , Ingo Molnar cc: x86@kernel.org, linux-kernel@vger.kernel.org, Borislav Petkov , Brian Gerst , Dave Hansen , Linus Torvalds , Oleg Nesterov , "linux-mm@kvack.org" , Andrey Ryabinin Subject: Re: several messages In-Reply-To: <20160125185706.GA28416@gmail.com> Message-ID: References: <20160125185706.GA28416@gmail.com> User-Agent: Alpine 2.11 (DEB 23 2013-08-11) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 25 Jan 2016, Andy Lutomirski wrote: > This is a straightforward speedup on Ivy Bridge and newer, IIRC. > (I tested on Skylake. INVPCID is not available on Sandy Bridge. > I don't have Ivy Bridge, Haswell or Broadwell to test on, so I > could be wrong as to when the feature was introduced.) Haswell and Broadwell have it. No idea about ivy bridge. Thanks, tglx