Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751314AbdH2IQU (ORCPT ); Tue, 29 Aug 2017 04:16:20 -0400 Received: from merlin.infradead.org ([205.233.59.134]:36300 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751263AbdH2IQS (ORCPT ); Tue, 29 Aug 2017 04:16:18 -0400 Date: Tue, 29 Aug 2017 10:15:08 +0200 From: Peter Zijlstra To: Andi Kleen Cc: Benjamin Herrenschmidt , "Kirill A. Shutemov" , Laurent Dufour , paulmck@linux.vnet.ibm.com, akpm@linux-foundation.org, mhocko@kernel.org, dave@stgolabs.net, jack@suse.cz, Matthew Wilcox , mpe@ellerman.id.au, paulus@samba.org, Thomas Gleixner , Ingo Molnar , hpa@zytor.com, Will Deacon , linux-kernel@vger.kernel.org, linux-mm@kvack.org, haren@linux.vnet.ibm.com, khandual@linux.vnet.ibm.com, npiggin@gmail.com, bsingharora@gmail.com, Tim Chen , linuxppc-dev@lists.ozlabs.org, x86@kernel.org Subject: Re: [PATCH v2 14/20] mm: Provide speculative fault infrastructure Message-ID: <20170829081508.rmw6retdq64h32yu@hirez.programming.kicks-ass.net> References: <1503007519-26777-1-git-send-email-ldufour@linux.vnet.ibm.com> <1503007519-26777-15-git-send-email-ldufour@linux.vnet.ibm.com> <20170827001823.n5wgkfq36z6snvf2@node.shutemov.name> <20170828093727.5wldedputadanssh@hirez.programming.kicks-ass.net> <1503954877.4850.19.camel@kernel.crashing.org> <20170828223511.GM28715@tassilo.jf.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170828223511.GM28715@tassilo.jf.intel.com> User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 207 Lines: 5 On Mon, Aug 28, 2017 at 03:35:11PM -0700, Andi Kleen wrote: > Yes the whole thing is quite risky. Probably will need some > kind of per architecture opt-in scheme? See patch 19/20, that not enough for you?