From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from 12.mo3.mail-out.ovh.net ([188.165.41.191] helo=mo3.mail-out.ovh.net) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1U67Yk-0006j8-N5 for barebox@lists.infradead.org; Thu, 14 Feb 2013 22:45:43 +0000 Received: from mail612.ha.ovh.net (b6.ovh.net [213.186.33.56]) by mo3.mail-out.ovh.net (Postfix) with SMTP id 80A70FF8BA6 for ; Fri, 15 Feb 2013 00:00:29 +0100 (CET) From: Jean-Christophe PLAGNIOL-VILLARD Date: Thu, 14 Feb 2013 23:44:29 +0100 Message-Id: <1360881873-1599-1-git-send-email-plagnioj@jcrosoft.com> In-Reply-To: <20130214224222.GX19322@game.jcrosoft.org> References: <20130214224222.GX19322@game.jcrosoft.org> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 1/5] linux/types: import __aligned_x64 from the kernel To: barebox@lists.infradead.org Cc: Rob Herring need it by upcoming EFI GPT support Cc: Rob Herring Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD --- include/linux/types.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/include/linux/types.h b/include/linux/types.h index 76c6b67..14f8315 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -142,6 +142,19 @@ 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 architectures. 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))) + #ifdef CONFIG_PHYS_ADDR_T_64BIT typedef u64 phys_addr_t; typedef u64 phys_size_t; -- 1.7.10.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox