From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pekka Enberg Subject: Re: [PATCH 0/3] Early use of boot service memory Date: Fri, 15 Nov 2013 10:36:37 +0200 Message-ID: <5285DD15.6080700@iki.fi> References: <1384222558-38527-1-git-send-email-jerry.hoemann@hp.com> <20131113224503.GB25344@anatevka.fc.hp.com> <52840206.5020006@zytor.com> <20131113235708.GC25344@anatevka.fc.hp.com> <20131114180455.GA32212@anatevka.fc.hp.com> <20131115005049.GJ5116@anatevka.fc.hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20131115005049.GJ5116-dMAi7lA+vBPDUbYHzcRnttBPR1lH4CV8@public.gmane.org> Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: jerry.hoemann-VXdhtT5mjnY@public.gmane.org, Pekka Enberg Cc: "H. Peter Anvin" , Rob Landley , Thomas Gleixner , Ingo Molnar , x86 maintainers , Matt Fleming , Yinghai Lu , Andrew Morton , "list-T1Yj925okcpg9hUCZPvPmw@public.gmane.org:DOCUMENTATION" , "list-T1Yj925okcpg9hUCZPvPmw@public.gmane.org:MEMORY MANAGEMENT" linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Vivek Goyal , LKML List-Id: linux-efi@vger.kernel.org On 11/15/13 2:50 AM, jerry.hoemann-VXdhtT5mjnY@public.gmane.org wrote: > One already has to specify command line arguments to enable kdump. Yes, so what? The problem with your patch is that now to enable kdump, I have to know that there's a second command line option and if my firmware is "broken" or not. The former is already a problem (how do I even know such a thing exists?) but the latter is almost impossible to solve from user point of view. And if I have a "broken" firmware, kdump won't work no matter what options I pass. I really don't see what's practical about that. Pekka From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f80.google.com (mail-pa0-f80.google.com [209.85.220.80]) by kanga.kvack.org (Postfix) with ESMTP id 5023E6B0035 for ; Sat, 16 Nov 2013 09:46:25 -0500 (EST) Received: by mail-pa0-f80.google.com with SMTP id kx10so45830pab.7 for ; Sat, 16 Nov 2013 06:46:24 -0800 (PST) Received: from psmtp.com ([74.125.245.155]) by mx.google.com with SMTP id kn3si1368626pbc.64.2013.11.15.00.36.41 for ; Fri, 15 Nov 2013 00:36:42 -0800 (PST) Message-ID: <5285DD15.6080700@iki.fi> Date: Fri, 15 Nov 2013 10:36:37 +0200 From: Pekka Enberg MIME-Version: 1.0 Subject: Re: [PATCH 0/3] Early use of boot service memory References: <1384222558-38527-1-git-send-email-jerry.hoemann@hp.com> <20131113224503.GB25344@anatevka.fc.hp.com> <52840206.5020006@zytor.com> <20131113235708.GC25344@anatevka.fc.hp.com> <20131114180455.GA32212@anatevka.fc.hp.com> <20131115005049.GJ5116@anatevka.fc.hp.com> In-Reply-To: <20131115005049.GJ5116@anatevka.fc.hp.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: jerry.hoemann@hp.com, Pekka Enberg Cc: "H. Peter Anvin" , Rob Landley , Thomas Gleixner , Ingo Molnar , x86 maintainers , Matt Fleming , Yinghai Lu , Andrew Morton , "list@ebiederm.org:DOCUMENTATION" , "list@ebiederm.org:MEMORY MANAGEMENT" linux-doc@vger.kernel.org, linux-efi@vger.kernel.org, Vivek Goyal , LKML On 11/15/13 2:50 AM, jerry.hoemann@hp.com wrote: > One already has to specify command line arguments to enable kdump. Yes, so what? The problem with your patch is that now to enable kdump, I have to know that there's a second command line option and if my firmware is "broken" or not. The former is already a problem (how do I even know such a thing exists?) but the latter is almost impossible to solve from user point of view. And if I have a "broken" firmware, kdump won't work no matter what options I pass. I really don't see what's practical about that. Pekka -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757647Ab3KOIgt (ORCPT ); Fri, 15 Nov 2013 03:36:49 -0500 Received: from out3-smtp.messagingengine.com ([66.111.4.27]:54769 "EHLO out3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752687Ab3KOIgl (ORCPT ); Fri, 15 Nov 2013 03:36:41 -0500 X-Sasl-enc: sPk7mwHRsCfE30UIoaW/OVm6E/7dAqPWwav5vfZgkdZ3 1384504600 Message-ID: <5285DD15.6080700@iki.fi> Date: Fri, 15 Nov 2013 10:36:37 +0200 From: Pekka Enberg User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: jerry.hoemann@hp.com, Pekka Enberg CC: "H. Peter Anvin" , Rob Landley , Thomas Gleixner , Ingo Molnar , x86 maintainers , Matt Fleming , Yinghai Lu , Andrew Morton , "list@ebiederm.org:DOCUMENTATION" , "list@ebiederm.org:MEMORY MANAGEMENT" , linux-doc@vger.kernel.org, linux-efi@vger.kernel.org, Vivek Goyal , LKML Subject: Re: [PATCH 0/3] Early use of boot service memory References: <1384222558-38527-1-git-send-email-jerry.hoemann@hp.com> <20131113224503.GB25344@anatevka.fc.hp.com> <52840206.5020006@zytor.com> <20131113235708.GC25344@anatevka.fc.hp.com> <20131114180455.GA32212@anatevka.fc.hp.com> <20131115005049.GJ5116@anatevka.fc.hp.com> In-Reply-To: <20131115005049.GJ5116@anatevka.fc.hp.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/15/13 2:50 AM, jerry.hoemann@hp.com wrote: > One already has to specify command line arguments to enable kdump. Yes, so what? The problem with your patch is that now to enable kdump, I have to know that there's a second command line option and if my firmware is "broken" or not. The former is already a problem (how do I even know such a thing exists?) but the latter is almost impossible to solve from user point of view. And if I have a "broken" firmware, kdump won't work no matter what options I pass. I really don't see what's practical about that. Pekka