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FRV: Specify the minimum slab/kmalloc alignment

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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>
This commit is contained in:
David Howells 2008-05-28 15:36:34 +01:00 committed by Linus Torvalds
parent 5e55843bb8
commit dc1d60a014
1 changed files with 7 additions and 0 deletions
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7
include/asm-frv/mem-layout.h
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@ -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