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| author | Srikar Dronamraju <srikar@linux.ibm.com> | 2026-09-02 18:05:02 +0530 |
|---|---|---|
| committer | Madhavan Srinivasan <maddy@linux.ibm.com> | 2026-10-12 11:24:19 +0530 |
| commit | 129f5d395fd66b6587a5ac156b232cca060d6512 (patch) | |
| tree | 37f679eeb985fb2276dbf03cc3b13a1086e8aa0b /tools/lib/python | |
| parent | e18351513a8e7ba08d9735056864f0c0095676d0 (diff) | |
| download | linux-next-129f5d395fd66b6587a5ac156b232cca060d6512.tar.gz linux-next-129f5d395fd66b6587a5ac156b232cca060d6512.zip | |
powerpc/numa: Support coregroup on PowerNV
Coregroup support on powerpc has so far been limited to PowerVM LPARs.
However, PowerNV can also support coregroups when firmware exposes the
required coregroup information through the associativity hierarchy.
Detect coregroup support by checking whether primary_domain_index is the
penultimate domain in the CPU node's ibm,associativity property. On
PowerNV, a non-penultimate primary_domain_index indicates that firmware
provides an additional level for coregroup information.
This keeps the logic compatible with PowerVM systems, where
primary_domain_index is likewise not the penultimate associativity
domain.
Signed-off-by: Srikar Dronamraju <srikar@linux.ibm.com>
Reviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260902123458.340456-8-srikar@linux.ibm.com
Diffstat (limited to 'tools/lib/python')
0 files changed, 0 insertions, 0 deletions