From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755904AbbKYArO (ORCPT ); Tue, 24 Nov 2015 19:47:14 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:58916 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753419AbbKYArM (ORCPT ); Tue, 24 Nov 2015 19:47:12 -0500 Date: Tue, 24 Nov 2015 16:47:11 -0800 From: Andrew Morton To: Dan Williams Cc: "linux-kernel@vger.kernel.org" , linux-arch@vger.kernel.org, Russell King , Kees Cook , Arnd Bergmann , Greg Kroah-Hartman , Ingo Molnar , "linux-arm-kernel@lists.infradead.org" Subject: Re: [PATCH v2 2/2] restrict /dev/mem to idle io memory ranges Message-Id: <20151124164711.0cb9ecdbba2fc729273f3240@linux-foundation.org> In-Reply-To: References: <20151124000553.26360.57819.stgit@dwillia2-desk3.jf.intel.com> <20151124000604.26360.56945.stgit@dwillia2-desk3.jf.intel.com> <20151124142521.e6d23e44a8b2c24c044c2dec@linux-foundation.org> X-Mailer: Sylpheed 3.4.1 (GTK+ 2.24.23; 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 List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 24 Nov 2015 16:34:19 -0800 Dan Williams wrote: > > IOW, a very good description of the problem-being-solved would help out > > a lot here... > > I'll fold the eventual result of this discussion into the changelog if > I can convince you it's worth moving forward. I'm easily convinced ;) Please let's get all the info into the right place, make sure it answers the thus-far-asked questions (at least) and we'll take it from there. And please do have a think about switching as much as possible over to runtime-configurability. Because "please echo foo > /proc" is a heck of a lot nicer than "please reboot with iomem=" which is a heck of a lot nicer than "please ask vendor for a new kernel".