From mboxrd@z Thu Jan 1 00:00:00 1970 From: Balbir Singh Subject: Re: [PATCH v2 2/3] powerpc/mm: allow memory hotplug into a memoryless node Date: Mon, 19 Sep 2016 21:53:49 +1000 Message-ID: <15d62e9c-38e6-dfd3-0ee2-6885cbfbe315@gmail.com> References: <1473883618-14998-1-git-send-email-arbab@linux.vnet.ibm.com> <1473883618-14998-3-git-send-email-arbab@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <1473883618-14998-3-git-send-email-arbab@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org To: Reza Arbab , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Rob Herring , Frank Rowand , Jonathan Corbet , Andrew Morton Cc: Bharata B Rao , Nathan Fontenot , Stewart Smith , Alistair Popple , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org, linux-mm@kvack.org List-Id: devicetree@vger.kernel.org On 15/09/16 06:06, Reza Arbab wrote: > Remove the check which prevents us from hotplugging into an empty node. > > This limitation has been questioned before [1], and judging by the > response, there doesn't seem to be a reason we can't remove it. No issues > have been found in light testing. > > [1] http://lkml.kernel.org/r/CAGZKiBrmkSa1yyhbf5hwGxubcjsE5SmkSMY4tpANERMe2UG4bg@mail.gmail.com > http://lkml.kernel.org/r/20160511215051.GF22115@arbab-laptop.austin.ibm.com > > Signed-off-by: Reza Arbab > Acked-by: Balbir Singh > Cc: Nathan Fontenot > Cc: Bharata B Rao > --- > arch/powerpc/mm/numa.c | 13 +------------ > 1 file changed, 1 insertion(+), 12 deletions(-) > I presume you've tested with CONFIG_NODES_SHIFT of 8 (255 nodes?) Balbir Singh. -- 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