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Tue, 7 Jul 2020 02:53:58 +0000 (GMT) Date: Tue, 7 Jul 2020 08:23:58 +0530 From: Srikar Dronamraju To: Nathan Lynch Subject: Re: [PATCH] powerpc/numa: Restrict possible nodes based on platform Message-ID: <20200707025358.GB874@linux.vnet.ibm.com> References: <20200706064002.14848-1-srikar@linux.vnet.ibm.com> <00388e11-9025-e273-137d-c23f8795457a@linux.ibm.com> <874kqkf91s.fsf@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <874kqkf91s.fsf@linux.ibm.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-07-07_01:2020-07-06, 2020-07-06 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 cotscore=-2147483648 mlxscore=0 suspectscore=0 bulkscore=0 mlxlogscore=999 adultscore=0 phishscore=0 spamscore=0 lowpriorityscore=0 clxscore=1015 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2007070018 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Srikar Dronamraju Cc: Tyrel Datwyler , linuxppc-dev , Bharata B Rao Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" * Nathan Lynch [2020-07-06 19:44:31]: > Tyrel Datwyler writes: > >> --- a/arch/powerpc/mm/numa.c > >> +++ b/arch/powerpc/mm/numa.c > >> @@ -897,7 +897,7 @@ static void __init find_possible_nodes(void) > >> return; > >> > >> if (of_property_read_u32_index(rtas, > >> - "ibm,max-associativity-domains", > >> + "ibm,current-associativity-domains", > > > > I'm not sure ibm,current-associativity-domains is guaranteed to exist on older > > firmware. You may need check that it exists and fall back to > > ibm,max-associativity-domains in the event it doesn't > > Yes. Looks like it's a PowerVM-specific property. Right, this is just a PowerVM specific property and doesn't affect PowerNV. On PowerNV thought we have sparse nodes, the max possible nodes is set correctly. -- Thanks and Regards Srikar Dronamraju