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Subject[PATCH] FRV: Specify the minimum slab/kmalloc alignment [try #2]
Date
From: David Howells <dhowells@redhat.com>

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>
---

include/asm-frv/mem-layout.h | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)


diff --git a/include/asm-frv/mem-layout.h b/include/asm-frv/mem-layout.h
index 734a1d0..2947764 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 8
+#define ARCH_SLAB_MINALIGN 8
+
/*****************************************************************************/
/*
* virtual memory layout from kernel's point of view


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