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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS 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 32F5CC28CF6 for ; Wed, 1 Aug 2018 10:23:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C483B208A4 for ; Wed, 1 Aug 2018 10:23:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="DxxqE1WG" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C483B208A4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387571AbeHAMI0 (ORCPT ); Wed, 1 Aug 2018 08:08:26 -0400 Received: from mail-pf1-f196.google.com ([209.85.210.196]:38167 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733104AbeHAMIZ (ORCPT ); Wed, 1 Aug 2018 08:08:25 -0400 Received: by mail-pf1-f196.google.com with SMTP id x17-v6so7633125pfh.5; Wed, 01 Aug 2018 03:23:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=ihbM6kR3tBb3FxEBjAUMtN10+okD3vIaQ/ZVp6XGKaA=; b=DxxqE1WG8H8D1EhAkscuVWenXMrVBZ8lQiuEDUGwEv78uZvAIucPmlFnOIW+YE+UDS Ika5jx+vFPLcCCJ1LbK/X37obaiAhTy/ymFUi4e3uVBIB1D7QSU6sNS98ph0dmkw8XBr IUvsibshbU8nsL+5beSKnda0aoQI2MebZA7dLHrg1TkZwkXcT12u5cBGN6JWpCVu0EOr t5Gy3D0YMv3glma6mW9ID0aqY0UXqWybRqkBXiTiCUTYplgn5fXn8WAcTe8ERRnFWziy wCuLBViFbkn7MlHwGHyGmm+yluk+lZJkh4GZtSTtlYoC/BPdyPqlwdTz2z01wiouriZD 1IMg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=ihbM6kR3tBb3FxEBjAUMtN10+okD3vIaQ/ZVp6XGKaA=; b=JgBYIqz9GcpU2Lw1QhRjcCKjCziwIENKCG6FlRanUF25uxw9jkcch6MgBaO0OszlD1 0jvQs7Ey0G1Kaic2ejEhzc0MYjt7Xi4BVWgrjbz3Hwbn/r91Qezjl8bZBdQYDGCkM2E8 r0Vj1/EJ+T2Tkb/KNmcTSB4DjVnBDFej8cSXtJ4PHqp4/CwoTdyc22YBJJfEsOruLrxH 8+YlvxL2zt4YpK25HTarJqquLgBi1E6t3TjDPu12SOP2bZkGP/HX3yfr+Cdyv5QIG3u5 honzQM2kZCj75q4j/ANBc7gIUSoWNv/fQCRcLQsqpmaOCoaouQvz4NdDtNHpLv6JPIBa pCLA== X-Gm-Message-State: AOUpUlHj4qrBoyxyYyPLwakSRJfREOafnbaojCv77hR+gJGoSCznjilW mpP3hMqVtRsm8u7Tuxg8ovZriM0h X-Google-Smtp-Source: AAOMgpeKMGgcPxq+VpMUBQH7S/zq3ouOQBXIY0qva+JwxqP9moRXRMWMvjAJ8iN9JHIgMszUBz6gtw== X-Received: by 2002:a63:5922:: with SMTP id n34-v6mr24064285pgb.113.1533119000446; Wed, 01 Aug 2018 03:23:20 -0700 (PDT) Received: from [192.168.86.235] (c-67-180-167-114.hsd1.ca.comcast.net. [67.180.167.114]) by smtp.gmail.com with ESMTPSA id l84-v6sm26438120pfg.3.2018.08.01.03.23.18 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 01 Aug 2018 03:23:19 -0700 (PDT) Subject: Re: SLAB_TYPESAFE_BY_RCU without constructors (was Re: [PATCH v4 13/17] khwasan: add hooks implementation) To: Andrey Ryabinin , Linus Torvalds , Christoph Lameter Cc: Theodore Ts'o , Jan Kara , linux-ext4@vger.kernel.org, Greg Kroah-Hartman , Pablo Neira Ayuso , Jozsef Kadlecsik , Florian Westphal , David Miller , NetFilter , coreteam@netfilter.org, Network Development , gerrit@erg.abdn.ac.uk, dccp@vger.kernel.org, Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Dave Airlie , intel-gfx , DRI , Eric Dumazet , Alexey Kuznetsov , Hideaki YOSHIFUJI , Ursula Braun , linux-s390 , Linux Kernel Mailing List , Dmitry Vyukov , Andrew Morton , linux-mm , Andrey Konovalov References: <01000164f169bc6b-c73a8353-d7d9-47ec-a782-90aadcb86bfb-000000@email.amazonses.com> <30ee6c72-dc90-275a-8e23-54221f393cb0@virtuozzo.com> From: Eric Dumazet Message-ID: Date: Wed, 1 Aug 2018 03:23:17 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <30ee6c72-dc90-275a-8e23-54221f393cb0@virtuozzo.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/01/2018 02:03 AM, Andrey Ryabinin wrote: > I can't think of any advantage in not having the constructor. > I can't see any advantage adding another indirect call, in RETPOLINE world.