From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH] net-packet: tx timestamping on tpacket ring Date: Sat, 13 Apr 2013 18:47:27 -0400 (EDT) Message-ID: <20130413.184727.1419644906707693070.davem@davemloft.net> References: <1365879412-9541-1-git-send-email-willemb@google.com> <5169D9C8.8010504@redhat.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: willemb@google.com, paul.chavent@onera.fr, richardcochran@gmail.com, edumazet@google.com, daniel.borkmann@tik.ee.ethz.ch, xemul@parallels.com, ebiederm@xmission.com, netdev@vger.kernel.org To: dborkman@redhat.com Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:37162 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752831Ab3DMWr3 (ORCPT ); Sat, 13 Apr 2013 18:47:29 -0400 In-Reply-To: <5169D9C8.8010504@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Daniel Borkmann Date: Sun, 14 Apr 2013 00:18:48 +0200 >> + flush_dcache_page(pgv_to_page(&h1->tp_sec)); >> + flush_dcache_page(pgv_to_page(&h1->tp_usec)); > > Hmm, not sure, but could we also flush the dcache only once? Indeed, I truly hope that headers never straddle pages.