| From dbe77cc974cee656eae37e75039dd1a410a4535b Mon Sep 17 00:00:00 2001 |
| From: Jan Engelhardt <jengelh@medozas.de> |
| Date: Sun, 28 Aug 2011 14:19:43 +0200 |
| Subject: [PATCH] include: refresh include files from kernel 3.1-rc3 |
| |
| [Peter: trimmed to bare essentials for buildroot] |
| Signed-off-by: Jan Engelhardt <jengelh@medozas.de> |
| --- |
| diff --git a/include/linux/types.h b/include/linux/types.h |
| index 8b483c8..630cd3b 100644 |
| --- a/include/linux/types.h |
| +++ b/include/linux/types.h |
| @@ -34,5 +34,18 @@ typedef __u64 __bitwise __be64; |
| typedef __u16 __bitwise __sum16; |
| typedef __u32 __bitwise __wsum; |
| |
| +/* |
| + * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid |
| + * common 32/64-bit compat problems. |
| + * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other |
| + * architectures) and to 8-byte boundaries on 64-bit architetures. The new |
| + * aligned_64 type enforces 8-byte alignment so that structs containing |
| + * aligned_64 values have the same alignment on 32-bit and 64-bit architectures. |
| + * No conversions are necessary between 32-bit user-space and a 64-bit kernel. |
| + */ |
| +#define __aligned_u64 __u64 __attribute__((aligned(8))) |
| +#define __aligned_be64 __be64 __attribute__((aligned(8))) |
| +#define __aligned_le64 __le64 __attribute__((aligned(8))) |
| + |
| #endif /* __ASSEMBLY__ */ |
| #endif /* _LINUX_TYPES_H */ |
| -- |
| 1.7.8.3 |
| |
