From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3wPTsG0YLDzDqb5 for ; Fri, 12 May 2017 22:33:05 +1000 (AEST) Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v4CCSiZ5127122 for ; Fri, 12 May 2017 08:32:52 -0400 Received: from e15.ny.us.ibm.com (e15.ny.us.ibm.com [129.33.205.205]) by mx0a-001b2d01.pphosted.com with ESMTP id 2acpt14b6c-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Fri, 12 May 2017 08:32:52 -0400 Received: from localhost by e15.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 12 May 2017 08:32:50 -0400 Reply-To: pc@us.ibm.com Subject: Re: [PATCH] powerpc/64s: dt_cpu_ftrs boot time setup option References: <20170511112441.30287-1-npiggin@gmail.com> <9b214f48-9d56-440c-f6d0-6308ff47305d@us.ibm.com> <87inl6butu.fsf@concordia.ellerman.id.au> To: Michael Ellerman , Nicholas Piggin , linuxppc-dev@lists.ozlabs.org From: Paul Clarke Date: Fri, 12 May 2017 07:32:46 -0500 MIME-Version: 1.0 In-Reply-To: <87inl6butu.fsf@concordia.ellerman.id.au> Content-Type: text/plain; charset=windows-1252 Message-Id: <7f6307f3-6b5a-f655-a93c-3eb4bb1c2062@us.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 05/11/2017 10:46 PM, Michael Ellerman wrote: > Paul Clarke writes: >> On 05/11/2017 06:24 AM, Nicholas Piggin wrote: >>> Provide a dt_cpu_ftrs= cmdline option to disable the dt_cpu_ftrs CPU >>> feature discovery, and fall back to the "cputable" based version. >> >> This boat has already sailed, I think, but "ftrs"? > > What you think vowels grow on trees! :) At least you're using lower-case, which takes less space. ;-) >> Was it too difficult to type "features"? I see "ftrs" and think "footers". > For the command line option we could spell out features. > > But should we also expand "dt", and "cpu" ? > > device_tree_central_processing_unit_features=off I'm not the biggest fan of "dt" ("devtree", anyone?), but that's certainly established. So _that's_ what "cpu" stands for! ;-) > :P > >> This seems like something that should be easy and intuitive to find >> and understand. > > Maybe. Ideally no one will ever use it, certainly not end users, it's > primarily intended for developers doing bring-up. I'm a developer, and I like to be able to understand something at a glance. (Hmm, what are "CPU footers"?) :-P PC