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Wed, 02 Sep 2026 12:36:00 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay05.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 682CZuJ648038306 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 2 Sep 2026 12:35:56 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 093A920043; Wed, 2 Sep 2026 12:35:56 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7C47420040; Wed, 2 Sep 2026 12:35:53 +0000 (GMT) Received: from sapthagiri.in.ibm.com (unknown [9.111.3.140]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 2 Sep 2026 12:35:53 +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 , Ritesh Harjani Subject: [PATCH v3 0/3] powerpc/numa: Enable coregroup support on PowerNV Date: Wed, 2 Sep 2026 18:04:59 +0530 Message-ID: <20260902123458.340456-5-srikar@linux.ibm.com> X-Mailer: git-send-email 2.55.0 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-Reinject: loops=2 maxloops=12 X-Authority-Analysis: v=2.4 cv=bc1bluPB c=1 sm=1 tr=0 ts=6a981831 cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=VdqzKS8jKosA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=zmxks_ozvLoXZVlZg-wA:9 X-Proofpoint-Spam-Info: AW1haW4tMjYwOTAyMDExMSBTYWx0ZWRfX7DtkUKoRXjaU 7FVt6Gsdw4/Pu2XjJf7JL1tlfGAcXOcvusH7p7xN6Pzro2NdNHE3aLEMofwca9TRHmhZyBZ6+ok thQUeWFa+a45exwbrBETNnC04WwCSvk= X-Proofpoint-ORIG-GUID: rG2Wmm0PF4x-Sxk5XZghjsEriJ8v7MNw X-Proofpoint-GUID: gpY5-v03BsJMUQZYQYrHazjpBxGl6CAr X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTAyMDExMSBTYWx0ZWRfX+Ic50hZnLAh2 gqY1OoB5JUGH80xWxeL/4x0GJeToBMkd7d+z5hbyevelo0RDp0M0gtNQqHQa7IT7/+Yx1p0D84+ kIbPm2XT9FdLk0J3gsSJCXuO922kbzBVyyQmpTZq/y/ZS2f/ybEulRcyAZVhHFCl+auJQKahSrA vFIXBTt71buNSddNOtBJgKgLUn9Eyl6TZNAKgr77fQzMxcT7VV68PAvALGudbzhyyZtkn4QkBV6 y02flRFz0pvWig7zalHKv0PGaaJunFNrC0fl0L+XUHwrCL0Drmn9YeW5BUAYG5Jt7ssLT7JTikA Nj9qoxwy3vqSZdxjyVDAJNPdZfJ/bg0aq4wCl62KeEkpB4XghZIvOGaETE0lH35BOWgxJHG5eVI JX8+JpgjqUOmZOugskGpk7zOuGC36UyyLp+bm7FBaP5Uf8iH/oh9+1CB/ndrrLgwZzA0dJL2ZeP LDerE9ZmZHkUrDzXiyw== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-02_03,2026-09-01_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 suspectscore=0 adultscore=0 malwarescore=0 spamscore=0 lowpriorityscore=0 phishscore=0 clxscore=1015 priorityscore=1501 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2609020111 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 v2: https://lkml.kernel.org/r/20260605055242.1757485-5-srikar@linux.ibm.com - Handle comments from Ritesh (one hunk needed to be moved from patch 2 to patch 3 to build correctly) 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(-) -- 2.43.7