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=-11.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 2F863C433E7 for ; Sun, 11 Oct 2020 11:56:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D0D8320773 for ; Sun, 11 Oct 2020 11:56:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="cnQLyeCm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387716AbgJKL4c (ORCPT ); Sun, 11 Oct 2020 07:56:32 -0400 Received: from mout.gmx.net ([212.227.17.22]:37877 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387690AbgJKL4a (ORCPT ); Sun, 11 Oct 2020 07:56:30 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1602417379; bh=aCwJTasXSGutuCXfxx14Zy/SrMcqLgSB9diEc+V6GHY=; h=X-UI-Sender-Class:Subject:From:To:References:Date:In-Reply-To; b=cnQLyeCmGzBPu6LwDsO490F7F6q6mx2spo74VuzhuN1jwb6Jm1ji1uUu82ENuyDkg otTg9gs4fOCiNMsr1cDoo5YMwCj4lark6V7ZmBBfvC3bVCV+NQop4pCS4deUz7mY6l p/Zu+BqEdxcKvA5D5QoQuT1fhq8iYYgyz+1e8oJ0= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [192.168.20.60] ([92.116.143.189]) by mail.gmx.com (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1MNsw4-1kphSV23xI-00OCsh; Sun, 11 Oct 2020 13:56:19 +0200 Subject: Re: [PATCH] parisc: Add MAP_UNINITIALIZED define From: Helge Deller To: linux-parisc@vger.kernel.org, James Bottomley , John David Anglin References: <20201010215431.GA30936@ls3530.fritz.box> Autocrypt: addr=deller@gmx.de; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <20201010215431.GA30936@ls3530.fritz.box> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:Czt+Fq80VoZsHjzmn3nCqLWzpOuOJJOr58d1Q8soN59CBCLxTow QFrcDxK71GmVzHvMWOk0T7mVIKV1vp4yGqw2KkCFJDCUrZsuvJDmOWR90Z3bw67DAMwwMOP G+ig/BD9LzfDwMOVCWI6iZn3bBC+qMrvg3I4wqQISrU8GN9g5fO5of70b8P5ZkTAe2rQqx2 C9EpkGw9F4GAcAllBff8Q== X-UI-Out-Filterresults: notjunk:1;V03:K0:M1sKYCc2T6o=:lPglXA9fCrLbsciCvfFts9 rKWHl5Yk/4Mh28ddWQaT9ckV48IfmMv5wiKZmiJCRFIGtCGZnkZ4Y99NXN+wHA8nWMr3/kQh/ LJWso2/Zu6d0M0x3PTDuHWDTor9z5TfDZ5cFNK9cgtxGWx22cszPlu9S4CYAx+/MkA0ENXIZ3 SyDfg83keBVA1bTOHmAZ4ZPCaDV3b17hKO/QUfhn9jW8b+9z9lwUWppedXE0ozu7oWK6s2UF/ fMvg8MhVFfqFkLmJqtNFYDQRbOjvDcBYKYMXkZVDlhqITdLw8gzuYUdJIX9UNreO8cohRk8xP 00wrsPX3TUi+5H7O9/GESIOME9keGH292K1QDPTJP+6T6OV05onEyfw3nJnTzASyQAhL2aCx7 ztWKQTk9yfdd/V0WD+Iqe2czCOoOrduOHmV9KBBsNZQo4hB5Is0abqrc7/9iT7p/nwHVcw9EN Ov7QXmYAjVhPP6VbNukQebEKlZs8ZBjzwKz+5Zo9nzHCnAd9kfmd49CNIiQwViwxhYFMa+bD8 v59RGXUDw6t/vxY2Q1tGinkF4setJHjJAW8wDDW/jVEJs1sWQ52c9N63Ki3sp1ZHF+MCc95sT wiVM77oyXef8hMDhmJW4wGP1EuHHiyU40iEgVnbmX4LVsefRvsiLzwrS/AqIcfN+BjhmaJNio yGzIpnzqbRtE0wEfiWL6UW/18TAFfjgVKAxoXyGfTaBTA/S+EQyIrj6mwwvuAtuh73ygZAlrl 3iFlAvZXY30WU9MXCdnepgeEMMZCxpYf5dd9R3WDOLFd2W/NMGJe765DhBBrgSGgmPoGsEO06 mjGD//eE4Q0FPaRx/fhAzFlIdvpztliHP7SZ0+pvsqa6I45p1P4PMYw5Q7mOjhcyijMumehJ4 Jkt5/2TnFkHql5rHIOpNlbFrHESVjMflcM4KBeM01rNtcPC0HpQRRqTH7I4b/ex+n6AA4+G8P giYaowSVOSw9zxSADcpznNRjvzKmZXoPRomXoRte0b8qJZW3NI72kAaUsxB5FaqcQO3gqpKwl tcp0FbXMVaX03TwAMi6XTcBrf//LK+mdKOdAmbHSOL/2S1BTfUHtPacYf0HReWfv23DnR+Hdm 2LONAi2lNWA5PCBExckTYA/4RHOgcXmlHi/h0mBJm56XNAPf4/QydFALmk8OezPa3cO2Vb3Ax zt20hf87pv4ULxvM1dkZdjqJ9LoR2QsC59R/4OuhWqJ5i4CgH96tF+aix9u7quiDW2mg+V9qm OWXSJh7MhTQObfOiF Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org On 10/10/20 11:54 PM, Helge Deller wrote: > Define MAP_UNINITIALIZED and use same value as other architectures. > Fixes build of debian foot package. I'm tempted to #define MAP_UNINITIALIZED to zero. That flag was invented for embedded usage, and becaue of security reasons we probably will never deliver uninitialized pages to userspace on parisc. So, defining it as 0 should be fine, as this fixes build errors and won't have any other (negative) effect. Thoughts? Helge > Suggested-by: John David Anglin > Signed-off-by: Helge Deller > > diff --git a/arch/parisc/include/uapi/asm/mman.h b/arch/parisc/include/u= api/asm/mman.h > index 6fd8871e4081..d828b293b6de 100644 > --- a/arch/parisc/include/uapi/asm/mman.h > +++ b/arch/parisc/include/uapi/asm/mman.h > @@ -25,6 +25,8 @@ > #define MAP_STACK 0x40000 /* give out an address that is best suited f= or process/thread stacks */ > #define MAP_HUGETLB 0x80000 /* create a huge page mapping */ > #define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED which doesn't unmap u= nderlying mapping */ > +#define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could= be > + * uninitialized */ > > #define MS_SYNC 1 /* synchronous memory sync */ > #define MS_ASYNC 2 /* sync memory asynchronously */ > diff --git a/tools/arch/parisc/include/uapi/asm/mman.h b/tools/arch/pari= sc/include/uapi/asm/mman.h > index f9fd1325f5bd..c7af0f2292fc 100644 > --- a/tools/arch/parisc/include/uapi/asm/mman.h > +++ b/tools/arch/parisc/include/uapi/asm/mman.h > @@ -39,6 +39,5 @@ > #define MADV_SOFT_OFFLINE 101 > /* MAP_32BIT is undefined on parisc, fix it for perf */ > #define MAP_32BIT 0 > -/* MAP_UNINITIALIZED is undefined on parisc, fix it for perf */ > -#define MAP_UNINITIALIZED 0 > +#define MAP_UNINITIALIZED 0x4000000 > #endif >