From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9069BC3A5A6 for ; Thu, 19 Sep 2019 12:33:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D4E121848 for ; Thu, 19 Sep 2019 12:33:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732113AbfISMdQ (ORCPT ); Thu, 19 Sep 2019 08:33:16 -0400 Received: from www62.your-server.de ([213.133.104.62]:60406 "EHLO www62.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727980AbfISMdQ (ORCPT ); Thu, 19 Sep 2019 08:33:16 -0400 Received: from [178.197.248.15] (helo=localhost) by www62.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89_1) (envelope-from ) id 1iAvcY-0000NK-BU; Thu, 19 Sep 2019 14:33:14 +0200 Date: Thu, 19 Sep 2019 14:33:14 +0200 From: Daniel Borkmann To: =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= Cc: ast@kernel.org, netdev@vger.kernel.org, =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , magnus.karlsson@intel.com, magnus.karlsson@gmail.com, bpf@vger.kernel.org, jonathan.lemon@gmail.com Subject: Re: [PATCH bpf] xsk: relax UMEM headroom alignment Message-ID: <20190919123314.GB5504@pc-63.home> References: <20190918075739.19451-1-bjorn.topel@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20190918075739.19451-1-bjorn.topel@gmail.com> User-Agent: Mutt/1.12.1 (2019-06-15) X-Authenticated-Sender: daniel@iogearbox.net X-Virus-Scanned: Clear (ClamAV 0.101.4/25577/Thu Sep 19 10:20:13 2019) Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org On Wed, Sep 18, 2019 at 09:57:39AM +0200, Björn Töpel wrote: > From: Björn Töpel > > This patch removes the 64B alignment of the UMEM headroom. There is > really no reason for it, and having a headroom less than 64B should be > valid. > > Fixes: c0c77d8fb787 ("xsk: add user memory registration support sockopt") > Signed-off-by: Björn Töpel Applied, thanks!