[PATCH 4/7] powerpc/numa: Allow coregroup detection when NUMA is disabled
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WARM2d
From: Srikar Dronamraju <hidden>
Date: 2026-10-16 11:05:43
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
parse_numa_properties() currently returns immediately when NUMA is disabled, which also prevents CPU associativity from being parsed for coregroup information. Move the numa_enabled check after CPU associativity processing so that coregroup topology can still be detected. Keep node onlining conditional on NUMA being enabled and return before processing memory and PCI NUMA information when NUMA is disabled. This allows coregroup topology to be initialized independently of NUMA node topology. Signed-off-by: Srikar Dronamraju <redacted> --- arch/powerpc/mm/numa.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 7cb37cb0c5db..ffdb07b995a8 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c@@ -925,11 +925,6 @@ static int __init parse_numa_properties(void) const __be32 *associativity; unsigned long i; - if (numa_enabled == 0) { - pr_warn("disabled by user\n"); - return -1; - } - primary_domain_index = find_primary_domain_index(); if (primary_domain_index < 0) {
@@ -985,10 +980,15 @@ static int __init parse_numa_properties(void) } /* node_set_online() is an UB if 'nid' is negative */ - if (likely(nid >= 0)) + if (likely(nid >= 0) && numa_enabled) node_set_online(nid); } + if (numa_enabled == 0) { + pr_warn("disabled by user\n"); + return -1; + } + get_n_mem_cells(&n_mem_addr_cells, &n_mem_size_cells); for_each_node_by_type(memory, "memory") {
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2.47.1