diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index 07387d3..fba8b7e 100644
--- a/arch/xtensa/include/asm/processor.h
+++ b/arch/xtensa/include/asm/processor.h
@@ -25,6 +25,8 @@
 # error Linux requires the Xtensa Windowed Registers Option.
 #endif
 
+#define ARCH_SLAB_MINALIGN	XCHAL_DATA_WIDTH
+
 /*
  * User space process size: 1 GB.
  * Windowed call ABI requires caller and callee to be located within the same