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=-2.3 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,USER_AGENT_MUTT 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 E8B6CC43441 for ; Sat, 10 Nov 2018 17:47:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8EB8E2089A for ; Sat, 10 Nov 2018 17:47:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="AkGo+5f2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8EB8E2089A 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 S1726790AbeKKDdU (ORCPT ); Sat, 10 Nov 2018 22:33:20 -0500 Received: from mail-wr1-f68.google.com ([209.85.221.68]:41705 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726244AbeKKDdU (ORCPT ); Sat, 10 Nov 2018 22:33:20 -0500 Received: by mail-wr1-f68.google.com with SMTP id v18-v6so5076826wrt.8; Sat, 10 Nov 2018 09:47:31 -0800 (PST) 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:user-agent; bh=AmXqsA19dFr1cuIWeWhOpxlRLIpActaup0Ntu9ZTnkE=; b=AkGo+5f2UlFEkAI5EzDFSRHE2P133CKTvyxFvKSMe2vqLYbLZK7SwJnXj8KoixucML evtgoZtC8YsVZMgFimTG8zWGJnc2DSBc4CrOULclkRLFkaHRXs0YXBuDytRmzZJlgTGS I+/Jb9AyhJXYJXvKtI90K3v+tMqTv+CIocB2l0/Sr0dVF95CejcCxjcLEI3hfIlgE5cP em9acFjC56SFt7xxYBbKvmcd/6FLtbcWe52l3r2a9VHGnIv+nCUIVV5lw4bNm6o9ozsL LU8yz/wBCU4hRfZKYzHUps8NxDZUR0i5TMvttKJhdyDlHLLeiAttGJWnb8uSsCaOh2G+ ZEbA== 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:user-agent; bh=AmXqsA19dFr1cuIWeWhOpxlRLIpActaup0Ntu9ZTnkE=; b=VPWIh0bd0VoFwp1mIMx6Ml8GgGplIYbXbh1PV3OTpLYGXMd9M/0TDzPSng2oD6GqlS XQPuxEiTbf22Q5GxZBAsLv4hIlCC2t4teFJJXDpNQ9Vnw6hNFRqHO+Kz8QOBwN7HIS6f fqcTSDQZuTspm60zHat3Ixdb8hfhTPidvJ3Z7PjUftGQs4LZK7OTIlM08Lx5sWNub33M 75nkB9vjI5fWj5sJnVfSG3xhnASiEgGGYq/jOBD6uIvfT6+GUHN6xpCOScfd9sfjWj+f zXt9NWB44W1KlMiO4ljiVwXPXuSBrd1mX/9z0ARY1sNBL33dVFtL/i9X1t6RBVJ36zIn 83Jw== X-Gm-Message-State: AGRZ1gLLSHrTbeD900cK2RwbQE/SKNf00TZneNkaJRRAT2LP1BunD+ZB C6Vf5lkPDLcWs+DugacFiTmMLkg= X-Google-Smtp-Source: AJdET5ce/QRn2sahl+8CTEIu7V9S9VK2vJ7bM96iyEfJWmP1Cere6tEOvk9PpsUwiC/6xZGt/zTNrQ== X-Received: by 2002:adf:f589:: with SMTP id f9-v6mr12398963wro.281.1541872050277; Sat, 10 Nov 2018 09:47:30 -0800 (PST) Received: from avx2 (nat5-minsk-pool-46-53-217-92.telecom.by. [46.53.217.92]) by smtp.gmail.com with ESMTPSA id i7-v6sm8905622wrs.55.2018.11.10.09.47.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 10 Nov 2018 09:47:29 -0800 (PST) Date: Sat, 10 Nov 2018 20:47:27 +0300 From: Alexey Dobriyan To: Rafael David Tinoco Cc: gorcunov@gmail.com, akpm@linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, shuah@kernel.org Subject: Re: [PATCH] proc: fix and merge proc-self-map-file tests Message-ID: <20181110174727.GA26417@avx2> References: <20181108111105.GC13195@uranus.lan> <20181109113036.21512-1-rafael.tinoco@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20181109113036.21512-1-rafael.tinoco@linaro.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Nov 09, 2018 at 09:30:36AM -0200, Rafael David Tinoco wrote: > Merge proc-self-map-files tests into one since this test should focus in > testing readlink in /proc/self/map_files/* only, and not trying to test > mapping virtual address 0. > > Lowest virtual address for user space mapping in other architectures, > like arm, is *at least* *(PAGE_SIZE * 2) and NULL hint does not > guarantee that when MAP_FIXED flag, important to this test, is given. > This patch also fixes this issue in remaining test. > - p = mmap(NULL, PAGE_SIZE, PROT_NONE, MAP_PRIVATE|MAP_FILE, fd, 0); > + p = mmap((void *) (2 * PAGE_SIZE), PAGE_SIZE, PROT_NONE, I don't know ARM. Is this 2 page limitation a limitation of hardware or kernel's?