sh: Bump up ARCH_KMALLOC_MINALIGN for DMA cases.

#endif

/*

 * Slub defaults to 8-byte alignment, we're only interested in 4.

 * Slab defaults to BYTES_PER_WORD, which ends up being the same anyways.

 * Some drivers need to perform DMA into kmalloc'ed buffers

 * and so we have to increase the kmalloc minalign for this.

 */

#ifdef CONFIG_SUPERH32

#define ARCH_KMALLOC_MINALIGN	4

#define ARCH_SLAB_MINALIGN	4

#else

/* If gcc inlines memset, it will use st.q instructions.  Therefore, we need

   kmalloc allocations to be 8-byte aligned.  Without this, the alignment

   becomes BYTE_PER_WORD i.e. only 4 (since sizeof(long)==sizeof(void*)==4 on

   sh64 at the moment). */

#define ARCH_KMALLOC_MINALIGN	8

#define ARCH_KMALLOC_MINALIGN	L1_CACHE_BYTES

#ifdef CONFIG_SUPERH64

/*

 * 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().

 * While BYTES_PER_WORD == 4 on the current sh64 ABI, GCC will still

 * happily generate {ld/st}.q pairs, requiring us to have 8-byte

 * alignment to avoid traps. The kmalloc alignment is gauranteed by

 * virtue of L1_CACHE_BYTES, requiring this to only be special cased

 * for slab caches.

 */

#define ARCH_SLAB_MINALIGN	8

#endif