Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751818AbeAENfp (ORCPT + 1 other); Fri, 5 Jan 2018 08:35:45 -0500 Received: from Galois.linutronix.de ([146.0.238.70]:44548 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751487AbeAENfo (ORCPT ); Fri, 5 Jan 2018 08:35:44 -0500 Date: Fri, 5 Jan 2018 14:35:36 +0100 (CET) From: Thomas Gleixner To: Tim Chen cc: Andy Lutomirski , Linus Torvalds , Greg KH , Dave Hansen , Andrea Arcangeli , Andi Kleen , Arjan Van De Ven , linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/7] x86/enter: Use IBRS on syscall and interrupts In-Reply-To: <0c525c4c6c817e9c42c7ed583d86dc591a86efde.1515086770.git.tim.c.chen@linux.intel.com> Message-ID: References: <0c525c4c6c817e9c42c7ed583d86dc591a86efde.1515086770.git.tim.c.chen@linux.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 Return-Path: On Thu, 4 Jan 2018, Tim Chen wrote: > Set IBRS upon kernel entrance via syscall and interrupts. Clear it > upon exit. I have no idea on which kernel this is supposed to apply. It fails on Linus tree and on tip x86/pti. Can you please finally ditch the broken and outdated version of PTI on which this is based on? I really wonder how this stuff is developed and tested when its missing essential fixes. Please post patches against tip x86/pti where the lastest fixes and patches concerning this mess are staged for both Linus and 4.14.stable Thanks, tglx