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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 E48EDC43219 for ; Tue, 30 Apr 2019 14:36:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B39A621734 for ; Tue, 30 Apr 2019 14:36:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727598AbfD3Ogg (ORCPT ); Tue, 30 Apr 2019 10:36:36 -0400 Received: from mail.kernel.org ([198.145.29.99]:52974 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726145AbfD3Ogg (ORCPT ); Tue, 30 Apr 2019 10:36:36 -0400 Received: from gandalf.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E360220835; Tue, 30 Apr 2019 14:36:32 +0000 (UTC) Date: Tue, 30 Apr 2019 10:36:29 -0400 From: Steven Rostedt To: Peter Zijlstra Cc: Linus Torvalds , Nicolai Stange , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , the arch/x86 maintainers , Josh Poimboeuf , Jiri Kosina , Miroslav Benes , Petr Mladek , Joe Lawrence , Shuah Khan , Konrad Rzeszutek Wilk , Tim Chen , Sebastian Andrzej Siewior , Mimi Zohar , Juergen Gross , Nick Desaulniers , Nayna Jain , Masahiro Yamada , Andy Lutomirski , Joerg Roedel , Linux List Kernel Mailing , live-patching@vger.kernel.org, "open list:KERNEL SELFTEST FRAMEWORK" Subject: Re: [PATCH 3/4] x86/ftrace: make ftrace_int3_handler() not to skip fops invocation Message-ID: <20190430103629.0899b3a8@gandalf.local.home> In-Reply-To: <20190430142047.GF2589@hirez.programming.kicks-ass.net> References: <20190427100639.15074-1-nstange@suse.de> <20190427100639.15074-4-nstange@suse.de> <20190427102657.GF2623@hirez.programming.kicks-ass.net> <20190428133826.3e142cfd@oasis.local.home> <20190429145250.1a5da6ed@gandalf.local.home> <20190430104648.GR2623@hirez.programming.kicks-ass.net> <20190430094445.13e61f41@gandalf.local.home> <20190430142047.GF2589@hirez.programming.kicks-ass.net> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 30 Apr 2019 16:20:47 +0200 Peter Zijlstra wrote: > > > > Sure, but that's a completely different issue. We would need to solve > > the 'emulate' call for batch mode first. > > I don't see a problem there; when INT3 happens; you bsearch() the batch > array to find the one you hit, you frob that into the percpu variables > and do the thing. Or am I loosing the plot again? I may need to tweak Linus's patch slightly, but I may be able to get it to work with the batch mode. -- Steve