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Fri, 05 Jun 2026 05:53:39 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (smtpav07.fra02v.mail.ibm.com [10.20.54.106]) by smtprelay07.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 6555ra3U43123100 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 5 Jun 2026 05:53:36 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 35B1720043; Fri, 5 Jun 2026 05:53:36 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 871F720040; Fri, 5 Jun 2026 05:53:34 +0000 (GMT) Received: from sapthagiri.in.ibm.com (unknown [9.123.90.163]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 5 Jun 2026 05:53:34 +0000 (GMT) From: Srikar Dronamraju To: linuxppc-dev Cc: Michael Ellerman , Madhavan Srinivasan , skiboot@lists.ozlabs.org, arbab@linux.ibm.com, mahesh@linux.ibm.com, chleroy@kernel.org, Srikar Dronamraju Subject: [PATCH v2 0/3] powerpc/numa: Enable coregroup support on PowerNV Date: Fri, 5 Jun 2026 11:22:43 +0530 Message-ID: <20260605055242.1757485-5-srikar@linux.ibm.com> X-Mailer: git-send-email 2.54.0 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 0pVwiXXWisku7a6Vs9sRAtbY12Rb0ySw X-Authority-Analysis: v=2.4 cv=fv/sol4f c=1 sm=1 tr=0 ts=6a226464 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=ovkfszED7a6RniWwQ0gA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjA1MDA1MSBTYWx0ZWRfX9DzeWHzmUU/G lcJloMmVUH3tpBdKWy+YWT6/HLq45FNZyS0FsPlUwUJpOoKJOp//eujg9uqvxl+qcDGEAqvlup5 GxXRSsV9KtYkHC6ROlFIVG622NkDwKpiIQGPK3Z3l3cgMtOJlzMF0o2GHpQ1SJYcL/vmYGaZ81a iurh8biN/itA1nEI63xVNdOZfr5gjquHf3Pb67i/t8SUK4AkYmQNAzVcYXp8iiblDLYFRoLw5+0 XNcjRIzbKEfXJzLNLhDfQKymitHaFvBG6qXbuaErzBeCKKqIY2Ibp40xGYDnBexPA/H3R0cSbzh 4VJy3PFwuAVZWE5XlQIreNzvCt931MJkMwo4+Dpoj/oaogOh6BNaCtb3w5KuZ6qHSHI4oSllD3Y AzXxMLnbqK8i60m/thxoBux+UvITB/6V/DxoGeLnqZs9fW3Cp7q6Ls6mA4klPxlfTVoaJBtQ8P4 BHdjLXMU1wwKPL6B3vQ== X-Proofpoint-ORIG-GUID: 0pVwiXXWisku7a6Vs9sRAtbY12Rb0ySw X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-04_07,2026-05-28_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 priorityscore=1501 spamscore=0 phishscore=0 clxscore=1015 impostorscore=0 suspectscore=0 bulkscore=0 lowpriorityscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605210000 definitions=main-2606050051 This series prepares cpu_to_coregroup_id() for broader use and enables coregroup support on PowerNV when firmware exposes the required associativity information. The first patch cleans up find_primary_domain_index(). The second makes cpu_to_coregroup_id() available outside PPC_SPLPAR while preserving the existing fallback behavior. The final patch detects coregroup support from the associativity hierarchy and uses it on PowerNV systems. Changelog from v1: https://lkml.kernel.org/r/20260524010017.140408-1-srikar@linux.ibm.com - Split into 3 patches - Handle comments from Christophe Leroy Srikar Dronamraju (3): powerpc/numa: Simplify find_primary_domain_index powerpc/numa: Allow cpu_to_coregroup_id without PPC_SPLPAR powerpc/numa: Support coregroup on PowerNV arch/powerpc/include/asm/topology.h | 15 +++-- arch/powerpc/mm/numa.c | 85 ++++++++++++++++++++++------- 2 files changed, 71 insertions(+), 29 deletions(-) -- 2.43.0