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=-6.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 30142C433C1 for ; Thu, 25 Mar 2021 07:36:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DC5B86044F for ; Thu, 25 Mar 2021 07:36:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229619AbhCYHgP (ORCPT ); Thu, 25 Mar 2021 03:36:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:37912 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229448AbhCYHfp (ORCPT ); Thu, 25 Mar 2021 03:35:45 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2CB8061A1A for ; Thu, 25 Mar 2021 07:35:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1616657745; bh=mAFtoy6hMbn7DC2MvCIG2lJYli/BHY/d/v+5y4b6n7k=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=je9ipGdhDYEmBPYT22pklaBYynwBnoWqzaLaQAiQ1Z2hUAr4IigwSj7glWmF7r0wY WjZKx0llYp9iByYw8H1mC/ZpKMGRy8MmUYhNFFwvfBRqlWUNhlvjF0egnZIutJiRIc l5pG6Xrn8Un4zU7dV57+hk477NZkBMNek3wC0U/0Z66Ra6VL+NxirsrTXdq4R9Lr7f 6c8C0NIxRU2/v8Grlqdh5RdiCsgpA7bWutUWHOLXea1TNzZCbkgYi3l898CjH5sLIv UqtONOqHmkXppB2JSY+VbDh8tmORFKVaWFx4TVZhBAfEpAnRszaggP8SvUMWd1/Ylu 01nCoj2Btn3Qw== Received: by mail-oi1-f172.google.com with SMTP id x207so1244149oif.1 for ; Thu, 25 Mar 2021 00:35:45 -0700 (PDT) X-Gm-Message-State: AOAM530UJRpxLzP6Bdm/7BQ1KHelBrm94lRR3/vuf4eqrH/7DJdEQtU4 CixVe74OOrMjeTtAscnQI0/DHO+9MA+sRKgS7ZU= X-Google-Smtp-Source: ABdhPJz2Xsy3VR2I4XEELnMwnaYimHVh4TKARb1NPhA9p0B311inYzhu3op576u8Cy5UnACYRRf6O1hEN69/TxhjSCs= X-Received: by 2002:aca:7c4:: with SMTP id 187mr4502209oih.47.1616657744330; Thu, 25 Mar 2021 00:35:44 -0700 (PDT) MIME-Version: 1.0 References: <6c819e1944044bfa8f88574beb094ef5@huawei.com> <54e5e0dbefa042b1b6a9c29fe9984897@huawei.com> In-Reply-To: <54e5e0dbefa042b1b6a9c29fe9984897@huawei.com> From: Ard Biesheuvel Date: Thu, 25 Mar 2021 08:35:33 +0100 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [question] insert ko failed because count_plts return 0 when CONFIG_RANDOMIZE_BASE is not set To: "chenjun (AM)" Cc: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , Will Deacon , Catalin Marinas , "Xiangrui (Euler)" , liuyanshi , wuzengkun Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 25 Mar 2021 at 07:22, chenjun (AM) wrote: > > =E5=9C=A8 2021/3/24 16:29, Ard Biesheuvel =E5=86=99=E9=81=93: > > On Wed, 24 Mar 2021 at 08:27, chenjun (AM) wrot= e: > >> > >> Hi > >> > >> I make a Image for arm64 (without CONFIG_RANDOMIZE_BASE). And a ko (13= M) > >> can not be inserted. > >> > > > > How many large modules have you loaded already? The module region is > > only 128 MB, so if your modules are huge, you may run out of space. > > > > Please check the kernel VA address and the load address of the module, > > and check whether they are more than 128 MB apart. > > > > Thanks Ard > > I will check it. > > One more question, why is CONFIG_ARM64_MODULE_PLTS depended on > CONFIG_RANDOMIZE_BASE? > Because modules should never go out of branching range if the placement is not randomized and the total size of all modules does not exceed 128 MB.