From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750972AbdL3JGY convert rfc822-to-8bit (ORCPT ); Sat, 30 Dec 2017 04:06:24 -0500 Received: from mout.gmx.net ([212.227.17.21]:51307 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750865AbdL3JGV (ORCPT ); Sat, 30 Dec 2017 04:06:21 -0500 Message-ID: <1514624691.7003.10.camel@gmx.de> Subject: Re: [GIT pull] x86/pti: The real thing From: Mike Galbraith To: Linus Torvalds , Thomas Gleixner Cc: LKML , Ingo Molnar , "H. Peter Anvin" , Andy Lutomirski , Dave Hansen , Borislav Petkov Date: Sat, 30 Dec 2017 10:04:51 +0100 In-Reply-To: References: Content-Type: text/plain; charset="ISO-8859-15" X-Mailer: Evolution 3.20.5 Mime-Version: 1.0 Content-Transfer-Encoding: 8BIT X-Provags-ID: V03:K0:Dbpshu9zcjVe6dL6RST0sp9koD9Xmzg7s4wn8l/gSsM3qE8Zqgx PmZ11sBr+/u55oOU8T9JrJNIEcDi/CHkWx2dUDWsvknNqt/aFvRF94SBmZdSMjFloCA4Kht 9wsgTNoa6bcMbeHZ6GEzd9k00LDuvk9p13BXI6+HgJ9EbQjWJpavxWxRVuODq4A6N/2aC4H 5QrSMZpioAsf3IKVfTXcA== X-UI-Out-Filterresults: notjunk:1;V01:K0:DCoR8Q3qiUk=:x6BziIbYuK7bzp17yc8zO7 mOCH/u0IlXwvppQzMwjmX4PeE/7ws+n4H9y3umjjNh4gJN6+noHE5hl/y2XEhIVofa6qAOkLe OgDvYX0s5sZk2vc5E4evNEDxjEXMSq863/puMu1heP7Yvlj0cOcK+8GKk+FBnfrCsmKzAYnGI 1B+dtanMAy7jybW7m3tCPDrmTcfolMwrAaVuLpZm+oislIrTWIe0jL2N6Zf66lJT27B13zSM6 ETtAtQKM3EjfLD+NQtp56gueRbCZK92/XJsCTblV6NVXTJDBGM/9O6fF4BSvT6TpVIhRtxMCG z5DP9kh6A2BBBPyB+4Avlt0cLGQ/LiHnwW+0jAOH3IYh3txGRfV1mMCXVslp+5c23d6gBQzi5 LifJsbfphAQorxwbjtroYWzfp0zgbMbOGJ5G8kkxSgFcABQoaVSER9I1Q+WzsSzJe7zM1iCmR Uth0XehYVBbuZ1TsO8DJk3Ll2LY8H4bvJcj0bgToqcWAyz64BsaSdNIxEbGVkDIrGvpUf27O6 HUtGLVk6zSSjNk2CZ/shGULqM/57x4uKeTLpxg38+1o98+qQSYYeuT3OAk48FEjvXoR8MFBS/ ALDFtyr28eLNjui8KUzOLhG+WIs6wGlXAQWCqlSdZwutuRI+2cFx9CHDU8lX28PY3LhOvUpLG vlfGnC9Zj6Bx7v6MpZWcvY7+6cl9xEBVZNLMY4SFM0BYGTCvTzmocrg4QVWJEUtRBQSTgYMYE qZ3Fv1uw5TJBZwOsquVc7jBXG2k0ZROL2OE2WopSkuHUsVqBOK+JkxiWY98uMRbZKcfBZJnKY 5lKTNc2+wxS9174a0GxdCW2zL/xfojp9/5Eon6TGtnCqiaQPd0= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2017-12-29 at 17:42 -0800, Linus Torvalds wrote: > On Thu, Dec 28, 2017 at 12:34 PM, Thomas Gleixner wrote: > > > > please pull the latest x86-pti-for-linus git tree from: > > > > git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-pti-for-linus > > > > This is the final set of enabling page table isolation on x86: > > Ok, after that late MCORE2 scare that held things up, this is now > merged in my tree and pushed out. "WorksForMe(tm)". But it definitely ain't free.  NFS hanging out in the kernel for 82ms at a whack may not be such a bad idea after all ;-) i4790+tbench CONFIG_PAGE_TABLE_ISOLATION=y Throughput 3467.72 MB/sec 8 clients 8 procs max_latency=3.499 ms CONFIG_PAGE_TABLE_ISOLATION=n Throughput 3700.81 MB/sec 8 clients 8 procs max_latency=4.893 ms CONFIG_PAGE_TABLE_ISOLATION=y CONFIG_PAGE_TABLE_ISOLATION=n 4.48% [k] syscall_return_via_sysret 3.56% [k] copy_user_enhanced_fast_string 3.41% [k] copy_user_enhanced_fast_string 2.54% [.] child_run 2.48% [.] child_run 1.76% [k] tcp_transmit_skb 1.64% [.] __strchr_sse2 1.74% [k] tcp_recvmsg 1.60% [k] tcp_transmit_skb 1.69% [.] __strchr_sse2 1.55% [k] tcp_recvmsg 1.56% [.] __GI_____strtoll_l_internal 1.46% [k] ipt_do_table 1.44% [k] ipt_do_table 1.45% [.] __GI_____strtoll_l_internal 1.42% [k] tcp_sendmsg_locked 1.25% [k] tcp_in_window 1.34% [k] tcp_write_xmit 1.21% [.] next_token 1.34% [k] tcp_clean_rtx_queue 1.17% [k] tcp_clean_rtx_queue 1.26% [.] next_token 1.16% [k] tcp_sendmsg_locked 1.24% [k] tcp_in_window 1.15% [k] __switch_to 1.19% [k] nf_conntrack_in 1.10% [k] switch_mm_irqs_off 1.17% [k] __switch_to 1.09% [k] tcp_write_xmit 1.13% [.] __strcasecmp_l_avx 1.09% [k] tcp_ack 1.10% [k] switch_mm_irqs_off 1.08% [k] nf_hook_slow 1.08% [k] tcp_v4_rcv 1.04% [k] __sched_text_start 1.06% [k] nf_hook_slow 0.99% [.] __strcasecmp_l_avx 1.05% [k] tcp_ack