Date: Mon, 29 Jul 2013 22:00:03 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Warner Losh <imp@bsdimp.com> Cc: freebsd-arm <freebsd-arm@freebsd.org>, freebsd-wireless@freebsd.org, Hans Petter Selasky <hans.petter.selasky@bitfrost.no> Subject: Re: My WLI-UC-GNM up crash Message-ID: <20130729190003.GP4972@kib.kiev.ua> In-Reply-To: <3571E4A7-D153-448E-A234-302C9C5603E9@bsdimp.com> References: <cakrd9exvuqeqz=3ntmh7k3e4_6fjw9jph_tpfchujhqhwwbzsg@mail.gmail.com> <zarafa.51f6ad45.7961.536131947b8b1205@mail.lockless.no> <3571E4A7-D153-448E-A234-302C9C5603E9@bsdimp.com>
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--9DptZICXTlJ7FQ09 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Jul 29, 2013 at 12:34:00PM -0600, Warner Losh wrote: >=20 > On Jul 29, 2013, at 11:58 AM, Hans Petter Selasky wrote: >=20 > > The aligned will make sure that the structure gets padded properly to t= he size specified. Only on ARM/MIPS etc, structures get automatically align= ed according to the element in the structure requiring the greatest alignme= nt. >=20 > I'd turn this around and say only on x86 do structures not get aligned th= is way. On any riscy architecture, unaligned accesses are expensive, which = is why the ABI there mandates this. >=20 The alignment of the structure to the largest alignment of the member is required by the ABIs on i386 and amd64 as well. --9DptZICXTlJ7FQ09 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.20 (FreeBSD) iQIcBAEBAgAGBQJR9ruyAAoJEJDCuSvBvK1B2OUQAKYEH7zcCVXK+9U4FBXwJHJc qvtKSL3WGoevcYmf3YWSJ0nlQahEv5eP+q5VHQXdoKykHzhhVhNuKAOSZ3Eyv6Lj Pr/05y0f6uiF9lrbDDjv7g2+dqBP+oWFkLl5bmRESyAaivEtDmn9ST3Xun+YUyEA Qqxg4ye/fU83juWIHPifY6VHp/BZ7TqSIn9HGWXu38Rdi7QkZFgXrWXmWrKJ+59X IvmUdT6UF0BxGiqnYrKRMxKEHYHeNbU+MgUL1r+6AuzT2yG8rMaONm1UADjvMm6d jq77QSc20W1sbm5pYv1ZnwUi3QgttywDJqIXOB8o4J04XUt6fybVnubCHr1PzrHL TKV038Zc5EUZBhfEZQDdUvrJf38VRNr2AFdjgqMRu//Wz9KPTCmvxKPLMsL+DEPL y+qXcY3VCyYtbnE5aJIg5bW1LvSAjbXVUzMFho0AZlChIrXxG0VBwR0guPVITzBu A6/XBAd6idMlz4Umg8QffXkaQv0rU23EZXoAo7J7IJsUqPb+Z04lC4S0/dohqFJW kvYvSHBc210d3ufmQoUY/5gpH4Be+cOgW4xnbLL73LkH+GhywyY4Cg+cbwuKd6kl QhW3rzFs7TTMn0a9hILTOxAmooDu3S93EqSQ4+lGTrHTD4TEdjDq/9PbXPsb6WP6 CQTfviFDirW97Cnp9Xx0 =Rrlz -----END PGP SIGNATURE----- --9DptZICXTlJ7FQ09--
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