The patch titled
frv: Specify the minimum slab/kmalloc alignment
has been added to the -mm tree. Its filename is
frv-specify-the-minimum-slab-kmalloc-alignment.patch
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------------------------------------------------------
Subject: frv: Specify the minimum slab/kmalloc alignment
From: David Howells <dhowells@xxxxxxxxxx>
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.
We need to use literal constants here as slab evaluates these within cpp.
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxxxxxx>
Cc: Matt Mackall <mpm@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/asm-frv/mem-layout.h | 7 +++++++
1 file changed, 7 insertions(+)
diff -puN include/asm-frv/mem-layout.h~frv-specify-the-minimum-slab-kmalloc-alignment include/asm-frv/mem-layout.h
--- a/include/asm-frv/mem-layout.h~frv-specify-the-minimum-slab-kmalloc-alignment
+++ a/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 /* (sizeof(long) * 2) */
+#define ARCH_SLAB_MINALIGN 8 /* (sizeof(long) * 2) */
+
/*****************************************************************************/
/*
* virtual memory layout from kernel's point of view
_
Patches currently in -mm which might be from dhowells@xxxxxxxxxx are
mn10300-fix-typo-in-header-guard.patch
frv-dont-offer-binfmt_flat.patch
frv-specify-the-minimum-slab-kmalloc-alignment.patch
linux-next.patch
git-unionfs.patch
security-keys-remove-unused-key_alloc_sem.patch
frv-use-the-common-ascii-hex-helpers.patch
mn10300-use-the-common-ascii-hex-helpers.patch
mutex-subsystem-synchro-test-module.patch
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