Messages in this thread Patch in this message | | | From | David Howells <> | Subject | Re: [PATCH] nommu: fix kobjsize() for SLOB and SLUB | Date | Thu, 29 May 2008 14:03:28 +0100 |
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Mike Frysinger <vapier.adi@gmail.com> wrote:
> > I fixed it by setting ARCH_KMALLOC_MINALIGN and ARCH_SLAB_MINALIGN. > > what was the change exactly ?
The attached patch.
David --- [PATCH] FRV: Specify the minimum slab/kmalloc alignment
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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