--- orig/include/asm-sh64/uaccess.hCould you make that dependant on !CONFIG_DEBUG_SLAB? Setting align to a non-zero value disables some debug code.
+++ mod/include/asm-sh64/uaccess.h
@@ -313,6 +313,12 @@
sh64 at the moment). */
#define ARCH_KMALLOC_MINALIGN 8
+/*
+ * We want 8-byte alignment for the slab caches as well, otherwise we have
+ * the same BYTES_PER_WORD (sizeof(void *)) min align in kmem_cache_create().
+ */
+#define ARCH_SLAB_MINALIGN 8
+