FRV: Specify the minimum slab/kmalloc alignment
Specify the minimum slab/kmalloc alignment to be 8 bytes. This fixes a
crash when SLOB is selected as the memory allocator. The FRV arch needs
this so that it can use the load- and store-double instructions without
faulting. By default SLOB sets the minimum to be 4 bytes.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/asm-frv/mem-layout.h b/include/asm-frv/mem-layout.h
index 734a1d0..8a15c90 100644
--- a/include/asm-frv/mem-layout.h
+++ b/include/asm-frv/mem-layout.h
@@ -31,6 +31,13 @@
#define PAGE_MASK (~(PAGE_SIZE-1))
+/*
+ * the slab must be aligned such that load- and store-double instructions don't
+ * fault if used
+ */
+#define ARCH_KMALLOC_MINALIGN (sizeof(long) * 2)
+#define ARCH_SLAB_MINALIGN (sizeof(long) * 2)
+
/*****************************************************************************/
/*
* virtual memory layout from kernel's point of view