Received: by 2002:ac0:a582:0:0:0:0:0 with SMTP id m2-v6csp168142imm; Mon, 1 Oct 2018 08:11:37 -0700 (PDT) X-Google-Smtp-Source: ACcGV60fJherPv1Ksozwmz2aO/MXGOQjgFXbyEHfCtbkHRVaEzBdXDUNkYFl8SIpr1PkAVDnrblj X-Received: by 2002:a17:902:8648:: with SMTP id y8-v6mr12360863plt.335.1538406697827; Mon, 01 Oct 2018 08:11:37 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1538406697; cv=none; d=google.com; s=arc-20160816; b=PxgDaXCSEU5rb4IJPl5OOF7Ow+eg2AgHMww954JXnnJMkfBR8Y7XN5GIjzXA7qgBq2 fk0LM6CiX8DjPVrKi7F1X2ZQEwljJ8X4yjlZ2tpPMcDDkFJPH0YLoqmPS+O61j3XqRt0 uEvj5LN0ljoD1IwJ1Ujr1oW+0uWrOQnJcEnEhju0yMgNa/PCQRvCGlwvRGtkYiuNS+cT ZBxLYEDMalbXMmNxG/PEeFrhaWQjg/P/5aOWvUmdq3QfXt8GrYzp/mw2QCi24cAllssz cu3FC5e4luE7buu5c4mQ4SFl5II8lDasqETSW/Dyi1OVvdPWRUVyAvTaYVFy1xWrpvu/ BE5g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=t7HDtFxKP6XhUJzoFnbjRiNKKnSmgwTS3AQk7A/+r30=; b=bSZxmcEjqkPGUUXc+Jrve6JwuSJb1kSxTHamGES0njPo4qa6ZIJ7A0G97x98SjZthy Uk3nrxQUGc0TomY1NF4V8Q5+SHI0FQiIgM++lQhHwEoaNNPUh8xIQFRn9j7dE3EZdu1g Nwh9E+R1hA/NIOaO2qefeI1RBDIIlUvFYk2ZOcijNbGjnAPBJfn0Qdx6KzTF2hgYPSp3 63GykE/xKPZQfEy6GaRdKswQpENGM9OQvGWuI89lmQ8VUJwcVNHryosKyRgDOhYKnX3q OkTV7Drvy/IC2iumnrevsgpku5mjBbw9vrHYpoWNNoE5LKgwBX1mPtFBREXkbsqTaNei wBUg== ARC-Authentication-Results: i=1; mx.google.com; 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 Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id bb5-v6si8936238plb.507.2018.10.01.08.11.14; Mon, 01 Oct 2018 08:11:37 -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; 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 S1729579AbeJAVsy (ORCPT + 99 others); Mon, 1 Oct 2018 17:48:54 -0400 Received: from verein.lst.de ([213.95.11.211]:38200 "EHLO newverein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728979AbeJAVsy (ORCPT ); Mon, 1 Oct 2018 17:48:54 -0400 Received: by newverein.lst.de (Postfix, from userid 2005) id 8D40068BC7; Mon, 1 Oct 2018 17:10:37 +0200 (CEST) Date: Mon, 1 Oct 2018 17:10:37 +0200 From: Torsten Duwe To: Ard Biesheuvel Cc: Masami Hiramatsu , Will Deacon , Catalin Marinas , Julien Thierry , Steven Rostedt , Josh Poimboeuf , Ingo Molnar , Arnd Bergmann , AKASHI Takahiro , linux-arm-kernel , Linux Kernel Mailing List , live-patching@vger.kernel.org Subject: Re: [PATCH v3 1/4] DYNAMIC_FTRACE configurable with and without REGS Message-ID: <20181001151037.GB2634@lst.de> References: <20181001140910.086E768BC7@newverein.lst.de> <20181001141643.331EE68BC7@newverein.lst.de> <20181001150353.GA2634@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 01, 2018 at 05:06:06PM +0200, Ard Biesheuvel wrote: > On 1 October 2018 at 17:03, Torsten Duwe wrote: > > On Mon, Oct 01, 2018 at 04:52:27PM +0200, Ard Biesheuvel wrote: > >> > >> I guess we now have Kbuild/Kconfig support for this, no? I mean, we > >> can now show/hide options depending on the capabilities of the > >> toolchain. > > > > Config options depending on flags availability? > > > Yes. Note that 'make menuconfig' now prints the compiler version at > the top, and kconfig options can now 'depend' on compiler features, Ah, cool, got it. So unless anyone else thinks this patch is useful, feel free to disregard it ;-) Point taken. Torsten