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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 F1954C433F5 for ; Wed, 8 Sep 2021 14:51:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D72D760724 for ; Wed, 8 Sep 2021 14:51:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349504AbhIHOwf convert rfc822-to-8bit (ORCPT ); Wed, 8 Sep 2021 10:52:35 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.85.151]:48136 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245253AbhIHOwd (ORCPT ); Wed, 8 Sep 2021 10:52:33 -0400 Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-10-MqPP_QLZOnaPOvxdcdkU6A-1; Wed, 08 Sep 2021 15:51:23 +0100 X-MC-Unique: MqPP_QLZOnaPOvxdcdkU6A-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Wed, 8 Sep 2021 15:51:21 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.023; Wed, 8 Sep 2021 15:51:21 +0100 From: David Laight To: 'Wei Liu' , Linus Torvalds CC: Naresh Kamboju , Mathias Nyman , Johannes Berg , "Jakub Kicinski" , Shuah Khan , "Brendan Higgins" , Ariel Elior , "GR-everest-linux-l2@marvell.com" , "Linux ARM" , open list , Netdev , "lkft-triage@lists.linaro.org" , Arnd Bergmann , "David S. Miller" , Greg Kroah-Hartman , Nick Desaulniers , Nathan Chancellor , Daniel Borkmann , Alexei Starovoitov , Eric Dumazet Subject: RE: ipv4/tcp.c:4234:1: error: the frame size of 1152 bytes is larger than 1024 bytes [-Werror=frame-larger-than=] Thread-Topic: ipv4/tcp.c:4234:1: error: the frame size of 1152 bytes is larger than 1024 bytes [-Werror=frame-larger-than=] Thread-Index: AQHXpJjLHdBfxh/omUuYsxLT8U4Q1auaODzA Date: Wed, 8 Sep 2021 14:51:21 +0000 Message-ID: <46be667d057f413aac7871ebe784e274@AcuMS.aculab.com> References: <20210908100304.oknxj4v436sbg3nb@liuwe-devbox-debian-v2> In-Reply-To: <20210908100304.oknxj4v436sbg3nb@liuwe-devbox-debian-v2> Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Wei Liu > Sent: 08 September 2021 11:03 ... > However calling into the allocator from that IPI path seems very heavy > weight. I will discuss with fellow engineers on how to fix it properly. Isn't the IPI code something that is likely to get called when a lot of stack has already been used? So you really shouldn't be using much stack at all?? David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)