From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [patch 34/54] Staging: hv: remove STRUCT_PACKED and STRUCT_ALIGNED defines Date: Tue, 21 Jul 2009 01:46:41 +0200 Message-ID: <200907210146.41399.arnd@arndb.de> References: <20090717180850.873962925@mini.kroah.org> <20090717180921.448023599@mini.kroah.org> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20090717180921.448023599@mini.kroah.org> Sender: linux-kernel-owner@vger.kernel.org To: virtualization@lists.linux-foundation.org Cc: Greg Kroah-Hartman , linux-kernel@vger.kernel.org, devel@driverdev.osuosl.org, virtualization@lists.osdl.org, Sam Ramji , Haiyang Zhang , Hank Janssen , shemminger@linux-foundation.org List-Id: virtualization@lists.linuxfoundation.org On Friday 17 July 2009, Greg Kroah-Hartman wrote: > @@ -43,7 +43,7 @@ typedef struct _RING_BUFFER { > // volatile u32 InterruptMask; > // Ring data starts here + RingDataStartOffset !!! DO NOT place any fields below this !!! > u8 Buffer[0]; > -} STRUCT_PACKED RING_BUFFER; > +} __attribute__((packed)) RING_BUFFER; > The data structure is actually packed already, the attribute does not make it better and could be removed. We also have __packed as a shortcut for __attribute__((packed)). Arnd <><