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=-1.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,HK_RANDOM_FROM,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 A7275C433B4 for ; Tue, 11 May 2021 03:09:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 531D561864 for ; Tue, 11 May 2021 03:09:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229931AbhEKDKS (ORCPT ); Mon, 10 May 2021 23:10:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229465AbhEKDKP (ORCPT ); Mon, 10 May 2021 23:10:15 -0400 Received: from mail-pg1-x531.google.com (mail-pg1-x531.google.com [IPv6:2607:f8b0:4864:20::531]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7E815C061574 for ; Mon, 10 May 2021 20:09:09 -0700 (PDT) Received: by mail-pg1-x531.google.com with SMTP id j12so8688666pgh.7 for ; Mon, 10 May 2021 20:09:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=vDycCYZUMZTRqclL05OsIOu92QLf1/h6CaOCTWyUtQo=; b=Dhn/BhszXa2kmPxmeAjJZYOD5Q7FN+5J43AnvUof7WBdQWttlGaEwkvQQgWAjXaE9u qJOZ/yX1ulX4HuW7ajZ6GdoCulDHmG8cQswpAnl3+iJL8DOgHsVLW1YyYB4LYdGJZNwM AcMlHdcxwlaDuwr0hSzgL6r2fUoWKQ/77/FmOpBUh49HQv/HDBJmTIoO5nqiqGYhn9zb ywTZkmiylk4imwnye5wkH+Sp5f92j9gZCLkOTO97qVPSmpbMp8Ei60l4a+1k+LDg+b9T Ki3KkwIZB6ZLy124T1rtAfmH9ZUwN7k1Uj6aql+DKdQae9U7Q0dML4K8qQvKwamwtO78 Cf0Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=vDycCYZUMZTRqclL05OsIOu92QLf1/h6CaOCTWyUtQo=; b=kgXzl90uTUcHDAqPkvswT7PA5QX7akpLVP89VqrcDAjE2526GS76d7LPSiixyNquVH xXDeEIeSFNBNDkHqyZBI8x3IYosQ35oAkzdI3aghOQxkPrEYtym/Y3l6Z1WH0W9w/d+x q3FpSBNV8Dx5BjzOszPO0uOFqudfHGmBxn1XxWo8xOTLRbfpwp808ue+SxCQXu1oGDuC 49ZoKq7UvogCZVa5uth6blrEP7usxFxBZ8AZgt3PpM19S8Cn4I4E45YUCNWxwuEfnF0d dnCPp+DH7aTPw9uQZc05aSN2ghpa5XkFDA/OYt2/NRNomtfxzm2iVpDRkkhS1U2NNLgg f8Aw== X-Gm-Message-State: AOAM53066/zY3zgBBvJ7MnWZQ5h32/WkmIzK/Ympqjb6qRRQ79cpRcNE YdakQyXy20OhY/y/n5yW5oY= X-Google-Smtp-Source: ABdhPJxISlNL5PKuFc7Rg+E15Siv9zOgzobxSxMwxXxHlu7yfVRnn/rquLYu7UIk06fA7eJDL9CrNw== X-Received: by 2002:a62:1c0c:0:b029:2b7:6dd2:adb3 with SMTP id c12-20020a621c0c0000b02902b76dd2adb3mr12703106pfc.44.1620702548963; Mon, 10 May 2021 20:09:08 -0700 (PDT) Received: from hyeyoo ([183.99.11.150]) by smtp.gmail.com with ESMTPSA id 33sm12156742pgq.21.2021.05.10.20.09.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 May 2021 20:09:08 -0700 (PDT) Date: Tue, 11 May 2021 12:09:03 +0900 From: Hyeonggon Yoo <42.hyeyoo@gmail.com> To: Christoph Lameter Cc: Vlastimil Babka , Matthew Wilcox , penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] mm: kmalloc_index: make compiler break when size is not supported Message-ID: <20210511030903.GA105690@hyeyoo> References: <20210508221328.7338-1-42.hyeyoo@gmail.com> <20210510135857.GA3594@hyeyoo> <9d0ffe49-a2e2-6c81-377b-4c8d2147dff8@suse.cz> <20210510150230.GA74915@hyeyoo> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, May 10, 2021 at 05:15:23PM +0200, Christoph Lameter wrote: > I guess this needs to be reviewed and tested by the users of architectures > that can use large MAXORDER pages such as powerpc and Itanium. as Vlastimil Babka said, I think it's fine too. because KMALLOC_SHIFT_HIGH can't be bigger than 25 regardless of MAX_ORDER