diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index e6b53cde676ea4f1b71a24c912e9323806255953..faaadeff7c1e7497b62119ac61e724b3f9c0f277 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -896,9 +896,13 @@ void __init hash__early_init_mmu(void)
 void hash__early_init_mmu_secondary(void)
 {
 	/* Initialize hash table for that CPU */
-	if (!firmware_has_feature(FW_FEATURE_LPAR))
-		mtspr(SPRN_SDR1, _SDR1);
-
+	if (!firmware_has_feature(FW_FEATURE_LPAR)) {
+		if (!cpu_has_feature(CPU_FTR_ARCH_300))
+			mtspr(SPRN_SDR1, _SDR1);
+		else
+			mtspr(SPRN_PTCR,
+			      __pa(partition_tb) | (PATB_SIZE_SHIFT - 12));
+	}
 	/* Initialize SLB */
 	slb_initialize();
 }