powerpc/pseries: Don't give a warning when HPT resizing isn't available

As of commit 438cc81 ("powerpc/pseries: Automatically resize HPT for memory hot add/remove"), when running on the pseries platform, we always attempt to use the PAPR extension to resize the hashed page table (HPT) when we add or remove memory. This is fine, but when the extension is not available we'll give a harmless, but scary warning. Instead check if the firmware supports HPT resizing before populating the mmu_hash_ops.resize_hpt pointer. Signed-off-by: David Gibson <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
chewitt · Mar 17, 2017 · 8971e1c · 8971e1c
1 parent f717629
commit 8971e1c
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
@@ -751,7 +751,9 @@ void __init hpte_init_pseries(void)
 	mmu_hash_ops.flush_hash_range	 = pSeries_lpar_flush_hash_range;
 	mmu_hash_ops.hpte_clear_all      = pseries_hpte_clear_all;
 	mmu_hash_ops.hugepage_invalidate = pSeries_lpar_hugepage_invalidate;
-	mmu_hash_ops.resize_hpt		 = pseries_lpar_resize_hpt;
+
+	if (firmware_has_feature(FW_FEATURE_HPT_RESIZE))
+		mmu_hash_ops.resize_hpt = pseries_lpar_resize_hpt;
 }
 
 void radix_init_pseries(void)