From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1FD4AC433E7 for ; Tue, 1 Sep 2020 19:08:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F33732071B for ; Tue, 1 Sep 2020 19:08:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="1uphIErQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729528AbgIATIr (ORCPT ); Tue, 1 Sep 2020 15:08:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59888 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726107AbgIATIq (ORCPT ); Tue, 1 Sep 2020 15:08:46 -0400 Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:8b0:10b:1231::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5D89BC061244; Tue, 1 Sep 2020 12:08:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=lAEF16Y7hbBT4eu86EXXZSLR75YbGx6Vr2GM79NERmk=; b=1uphIErQeCBiKEiiWPf6ob4E/d Dkcaf4xig5oOYejDV/HrxTzmcbXWYhfeNn/8XEaYrotA1HZpoP2PxDNdG9YZZ4uq4juK8D3z1cKir CFtfSvv75IWC6t69whf1ByKmJSXxFGW6oVo9eHr2FOk9xp8RYOoMpnZdC223ztaxp9fyylSznpdt4 kukumAHay0Q1R6Aa5T7jVnvP7E2/N/X4EPx/XA/kYFFnyyvGwshOy65B1BuSv7PsLyvLRhHnWIEs+ 7mU/cT5hhzpgYHJQw7SBlS7AVn4VDgNLP9wotofmNFANSbc1yPs8Npll3RYhT9Bzyh8A5xRcrZj+o VOeDRRkw==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=worktop.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kDBdb-0000oV-Jo; Tue, 01 Sep 2020 19:08:11 +0000 Received: by worktop.programming.kicks-ass.net (Postfix, from userid 1000) id 5DFC998046E; Tue, 1 Sep 2020 21:08:08 +0200 (CEST) Date: Tue, 1 Sep 2020 21:08:08 +0200 From: Peter Zijlstra To: Masami Hiramatsu Cc: linux-kernel@vger.kernel.org, Eddy_Wu@trendmicro.com, x86@kernel.org, davem@davemloft.net, rostedt@goodmis.org, naveen.n.rao@linux.ibm.com, anil.s.keshavamurthy@intel.com, linux-arch@vger.kernel.org, cameron@moodycamel.com, oleg@redhat.com, will@kernel.org, paulmck@kernel.org Subject: Re: [PATCH v5 00/21] kprobes: Unify kretprobe trampoline handlers and make kretprobe lockless Message-ID: <20200901190808.GK29142@worktop.programming.kicks-ass.net> References: <159870598914.1229682.15230803449082078353.stgit@devnote2> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <159870598914.1229682.15230803449082078353.stgit@devnote2> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Aug 29, 2020 at 09:59:49PM +0900, Masami Hiramatsu wrote: > Masami Hiramatsu (16): > kprobes: Add generic kretprobe trampoline handler > x86/kprobes: Use generic kretprobe trampoline handler > arm: kprobes: Use generic kretprobe trampoline handler > arm64: kprobes: Use generic kretprobe trampoline handler > arc: kprobes: Use generic kretprobe trampoline handler > csky: kprobes: Use generic kretprobe trampoline handler > ia64: kprobes: Use generic kretprobe trampoline handler > mips: kprobes: Use generic kretprobe trampoline handler > parisc: kprobes: Use generic kretprobe trampoline handler > powerpc: kprobes: Use generic kretprobe trampoline handler > s390: kprobes: Use generic kretprobe trampoline handler > sh: kprobes: Use generic kretprobe trampoline handler > sparc: kprobes: Use generic kretprobe trampoline handler > kprobes: Remove NMI context check > kprobes: Free kretprobe_instance with rcu callback > kprobes: Make local used functions static > > Peter Zijlstra (5): > llist: Add nonatomic __llist_add() and __llist_dell_all() > kprobes: Remove kretprobe hash > asm-generic/atomic: Add try_cmpxchg() fallbacks > freelist: Lock less freelist > kprobes: Replace rp->free_instance with freelist This looks good to me, do you want me to merge them through -tip? If so, do we want to try and get them in this release still? Ingo, opinions? This basically fixes a regression cauesd by 0d00449c7a28 ("x86: Replace ist_enter() with nmi_enter()")