From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx191.postini.com [74.125.245.191]) by kanga.kvack.org (Postfix) with SMTP id A0B4C6B00F5 for ; Mon, 27 May 2013 03:00:43 -0400 (EDT) Received: from /spool/local by e28smtp05.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 27 May 2013 12:26:17 +0530 Received: from d28relay05.in.ibm.com (d28relay05.in.ibm.com [9.184.220.62]) by d28dlp02.in.ibm.com (Postfix) with ESMTP id 5A1773940053 for ; Mon, 27 May 2013 12:30:35 +0530 (IST) Received: from d28av05.in.ibm.com (d28av05.in.ibm.com [9.184.220.67]) by d28relay05.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r4R70STk63766682 for ; Mon, 27 May 2013 12:30:29 +0530 Received: from d28av05.in.ibm.com (loopback [127.0.0.1]) by d28av05.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r4R70OYe018138 for ; Mon, 27 May 2013 17:00:31 +1000 Date: Mon, 27 May 2013 15:00:21 +0800 From: Wanpeng Li Subject: Re: [patch v2 3/6] mm/memory_hotplug: Disable memory hotremove for 32bit Message-ID: <20130527070021.GA24196@hacker.(null)> Reply-To: Wanpeng Li References: <1369547921-24264-1-git-send-email-liwanp@linux.vnet.ibm.com> <1369547921-24264-3-git-send-email-liwanp@linux.vnet.ibm.com> <20130526090054.GE10651@dhcp22.suse.cz> <20130526090617.GA28604@hacker.(null)> <20130526181209.GB20270@dhcp22.suse.cz> <20130526235138.GA3223@hacker.(null)> <20130527064808.GA27274@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130527064808.GA27274@dhcp22.suse.cz> Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Andrew Morton , KAMEZAWA Hiroyuki , KOSAKI Motohiro , David Rientjes , Jiang Liu , Tang Chen , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , stable@vger.kernel.org On Mon, May 27, 2013 at 08:48:27AM +0200, Michal Hocko wrote: >On Mon 27-05-13 07:51:38, Wanpeng Li wrote: >> On Sun, May 26, 2013 at 08:12:09PM +0200, Michal Hocko wrote: >> >On Sun 26-05-13 17:06:17, Wanpeng Li wrote: >> >> On Sun, May 26, 2013 at 11:00:54AM +0200, Michal Hocko wrote: >> >> >On Sun 26-05-13 13:58:38, Wanpeng Li wrote: >> >> >> As KOSAKI Motohiro mentioned, memory hotplug don't support 32bit since >> >> >> it was born, >> >> > >> >> >Why? any reference? This reasoning is really weak. >> >> > >> >> >> >> http://marc.info/?l=linux-mm&m=136953099010171&w=2 >> > >> >I have seen the email but that email just states that the feature is >> >broken. Maybe it is obvious to you _what_ is actually broken but it >> >doesn't need to be others especially those who would be reading such >> >changelog later. So if you consider this configuration broken then be >> >specific what is broken. >> > >> >> Sorry for the not enough information. KOSAKI explain more here: >> http://marc.info/?l=linux-mm&m=136958040921274&w=2 > >There are still just general claims that _something_ is not highmem >aware. > >Anyway, as it seems that there are some attempts to revive this code >then this discussion is moot. But, just for the future, make sure you >are really specific when you claim that something is broken. Somebody >said it was broken is _not_ a reasoning that would fly. > Got it, thanks Michal. ;-) >-- >Michal Hocko >SUSE Labs -- 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