diff options
Diffstat (limited to 'arch/x86/mm/srat.c')
| -rw-r--r-- | arch/x86/mm/srat.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/arch/x86/mm/srat.c b/arch/x86/mm/srat.c index 1a25187e151e..66338a60aa6e 100644 --- a/arch/x86/mm/srat.c +++ b/arch/x86/mm/srat.c @@ -42,15 +42,31 @@ static __init inline int srat_disabled(void) return acpi_numa < 0; } -/* Callback for SLIT parsing */ +/* + * Callback for SLIT parsing. pxm_to_node() returns NUMA_NO_NODE for + * I/O localities since SRAT does not list them. I/O localities are + * not supported at this point. + */ void __init acpi_numa_slit_init(struct acpi_table_slit *slit) { int i, j; - for (i = 0; i < slit->locality_count; i++) - for (j = 0; j < slit->locality_count; j++) - numa_set_distance(pxm_to_node(i), pxm_to_node(j), + for (i = 0; i < slit->locality_count; i++) { + const int from_node = pxm_to_node(i); + + if (from_node == NUMA_NO_NODE) + continue; + + for (j = 0; j < slit->locality_count; j++) { + const int to_node = pxm_to_node(j); + + if (to_node == NUMA_NO_NODE) + continue; + + numa_set_distance(from_node, to_node, slit->entry[slit->locality_count * i + j]); + } + } } /* Callback for Proximity Domain -> x2APIC mapping */ |