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[209.132.180.67]) by mx.google.com with ESMTP id 14si2950387pgv.248.2019.05.03.10.05.07; Fri, 03 May 2019 10:05:23 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=pUJFndPo; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728423AbfECQfy (ORCPT + 99 others); Fri, 3 May 2019 12:35:54 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:52620 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725809AbfECQfx (ORCPT ); Fri, 3 May 2019 12:35:53 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=/LENoSgXzLnW9DRzg5bqii7vmsoRoQ47x0BTapkqwk4=; b=pUJFndPoOeujxusJvYrBI3BOW LGwNIdKeMmGzZY/QohuDgLb/FXoiWvCIwRCRPEzyORJ8zyLlbDzeOgZqqIRT1GeALMLJKWbzVTupM snWgdPxLtBR4cs9qhOd3juRSzH1bKD+ISF3uQqNIsPYGiJYUT9OdtnLtGAZAnF4TtLz0ltMiCaP/r NUzVkmhKPBHihhqKpe4D5Zfx/oqayLtN6WaBr8Xk+B3ZklTToqwpv0R98cENmdjE0MQAVVhCBMHM3 lpiC6X2v6cNubRcDwe/1GuH9A4sgGlbN5dup/fXumrUdP8RE9nEdv3baLD0SFj+GiFYLfpy5f2lm1 6fnk0XvwA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1hMb9l-0007T3-8p; Fri, 03 May 2019 16:35:29 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 8E072286B652D; Fri, 3 May 2019 18:35:27 +0200 (CEST) Date: Fri, 3 May 2019 18:35:27 +0200 From: Peter Zijlstra To: Steven Rostedt Cc: Andy Lutomirski , Linus Torvalds , Linux List Kernel Mailing , Ingo Molnar , Andrew Morton , Andy Lutomirski , 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 , Joerg Roedel , "open list:KERNEL SELFTEST FRAMEWORK" , stable Subject: Re: [RFC][PATCH 1/2] x86: Allow breakpoints to emulate call functions Message-ID: <20190503163527.GI2606@hirez.programming.kicks-ass.net> References: <20190502181811.GY2623@hirez.programming.kicks-ass.net> <20190502202146.GZ2623@hirez.programming.kicks-ass.net> <20190502185225.0cdfc8bc@gandalf.local.home> <20190502193129.664c5b2e@gandalf.local.home> <20190502195052.0af473cf@gandalf.local.home> <20190503092959.GB2623@hirez.programming.kicks-ass.net> <20190503092247.20cc1ff0@gandalf.local.home> <2045370D-38D8-406C-9E94-C1D483E232C9@amacapital.net> <20190503123126.3a2801be@gandalf.local.home> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190503123126.3a2801be@gandalf.local.home> 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 Fri, May 03, 2019 at 12:31:26PM -0400, Steven Rostedt wrote: > I guess the real question is, what's the performance impact of doing > that? Is there anyone that considers i386 a performance platform?