1 files changed, 15 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index acc0d247d3c3..6c2d8836f77d 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -583,6 +583,20 @@ static void __init check_cpu_pa_features(unsigned long node)
                       ibm_pa_features, ARRAY_SIZE(ibm_pa_features));
 }
 
+#ifdef CONFIG_PPC64
+static void __init check_cpu_slb_size(unsigned long node)
+{
+        u32 *slb_size_ptr;
+
+        slb_size_ptr = of_get_flat_dt_prop(node, "ibm,slb-size", NULL);
+        if (slb_size_ptr != NULL) {
+                mmu_slb_size = *slb_size_ptr;
+        }
+}
+#else
+#define check_cpu_slb_size(node) do { } while(0)
+#endif
+
 static struct feature_property {
         const char *name;
         u32 min_value;
@@ -713,6 +727,7 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
 
         check_cpu_feature_properties(node);
         check_cpu_pa_features(node);
+        check_cpu_slb_size(node);
 
 #ifdef CONFIG_PPC_PSERIES
         if (nthreads > 1)