From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757229AbbFPUGV (ORCPT ); Tue, 16 Jun 2015 16:06:21 -0400 Received: from terminus.zytor.com ([198.137.202.10]:34048 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752944AbbFPUGO (ORCPT ); Tue, 16 Jun 2015 16:06:14 -0400 Message-ID: <5580819F.1080802@zytor.com> Date: Tue, 16 Jun 2015 13:05:51 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Paul Bolle CC: NeilBrown , Jan Beulich , Valentin Rothberg , mingo@elte.hu, tglx@linutronix.de, james.t.kukunas@linux.intel.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86/raid6: correctly check for assembler capabilities References: <54C2148E02000078000588FB@mail.emea.novell.com> <1422995490.23894.32.camel@x220> <20150204075033.25fb2317@notabene.brown> <1422997415.23894.44.camel@x220> <55807D28.7090702@zytor.com> <1434484619.2069.72.camel@x220> In-Reply-To: <1434484619.2069.72.camel@x220> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/16/2015 12:56 PM, Paul Bolle wrote: > On Tue, 2015-06-16 at 12:46 -0700, H. Peter Anvin wrote: >> There is a hope/intent that eventually the config system will be able to >> incorporate toolchain dependencies for a bunch of reasons. > > This restarts a four months old thread with a one sentence remark. So > could you please elaborate, because now you've left me and, perhaps, the > other people reading this wondering what "toolchain dependencies" > actually means and what those "bunch of reasons" are. > Sorry, missed the date on this in my inbox for some reason. So this related to the CONFIG_AS_ symbols for assembly. We really would like to do things like actually adding dependencies on assembler or compiler support into Kconfig proper, rather than having two independent mechanisms. That way we could do, for example: config RAID6_AVX2 depends on X86 && AS_AVX2