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=-5.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MSGID_FROM_MTA_HEADER,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 35B3FC433B4 for ; Wed, 19 May 2021 04:42:28 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A3B686139A for ; Wed, 19 May 2021 04:42:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A3B686139A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=windriver.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:In-Reply-To:Date:Message-ID:From: References:Cc:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=GqIs0XTWuXORG3PprLPXb0FbavZ/8yLwzjyqKMAun5s=; b=rRQ8W6pk25nwMpcCjB+5lYStj XNwCuhexLmSltB16hi2tKW9A8/xEHUAlQSG29rXHBfWgQYfdo03Ithnfi8iLHQAouj2z1Gsb+Oi+J eii3CeTpl8Cg0biLxjBQcObe9WJfRDr4x9FXySGAk9EcVvDhr9Xk+vv5iTuUBE1rWqyBxiNo6LAlk ApFqsh9DkiyEpEoXkT/VDTl4TnWG+kVG0p1NZrc3LLvYxnAd3rBPXWjt9Ftyob+BjTFuJdkKWOHuw /cFoI/Sx3lonK+8KQkYbDlkUerZtaTyQpP1wIZYJb8e9Ao60SabtDxFXd/Xcc1bY5MDHN9IVVS+Xh RhQ3MPKcw==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1ljE06-002l1W-JF; Wed, 19 May 2021 04:40:06 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1ljE03-002l12-81 for linux-arm-kernel@desiato.infradead.org; Wed, 19 May 2021 04:40:03 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=MIME-Version: Content-Transfer-Encoding:Content-Type:In-Reply-To:Date:Message-ID:From: References:Cc:To:Subject:Sender:Reply-To:Content-ID:Content-Description; bh=1aBjv6rI0Q+u8uQlddzYcLOsX6W7vscfmK6O3depR2U=; b=dwA/IFP3c9DGAHkEg5hsCzJz6B cZb5l/RO0kAxlAh+HfBELR3aNaFZsGAeU5nhlwAISMfzpiQTGTZszd4QttbsYoJgn/3spwlwRO9Yn H+a2P+OK2I3vVxtqJtsvsimmut0MZK7J1YqI+D7bOdVX81hu5VbdcFp56RnaR5Vgf4/Dq/HQKfvzh bXhMabm/Flf9tbrhBgxblg6JPKieZCG3cAt3+Evd5gpOCFwn8xTA5XjhC/biopX7Rd1jtwtVv3544 kwLZHPmUzxONTja36roWVKQImNt2H2RodIP0tK5IVaEndwOg8dJ4sglzktnN/lkvW+nyeqy9ae5wA 9Jo9eOjA==; Received: from mx0a-0064b401.pphosted.com ([205.220.166.238]) by bombadil.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1ljDzz-00F7ib-O6 for linux-arm-kernel@lists.infradead.org; Wed, 19 May 2021 04:40:01 +0000 Received: from pps.filterd (m0250810.ppops.net [127.0.0.1]) by mx0a-0064b401.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 14J4dUaw028338; Tue, 18 May 2021 21:39:30 -0700 Received: from nam10-bn7-obe.outbound.protection.outlook.com (mail-bn7nam10lp2105.outbound.protection.outlook.com [104.47.70.105]) by mx0a-0064b401.pphosted.com with ESMTP id 38mctd88rk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 18 May 2021 21:39:29 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=hTG+bir/Qyx7YUBrabUQcJtB35CoYo4rjXvlaixA0tu+J2mfyOK7NEnFScoU0ozerL6ygeXDNN+U1e0I6bH4zTWSYAQBmk0KndWiAQL8NsNmfiKDkld1/fwHhY+QPv+oPztoGu21anRuNn9TBYP6g+SlhsDFHPCH7UfX+3gvPfHSEDDg9wpzZSMbbtRtxewsDfGlbhSZK654i2OFJNg64KuihOJVMdaOe8yuusxTu0X0qxQmdf5EdQOa6llImTFFa6fpfhqIO4IxTh/Ff0sS8Wy+QC+qJ4urAbjEZndNGwVMwCy0vyKykfR6Zg/m0nMHhscyO8fHSP6noKwPKTnNcg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=1aBjv6rI0Q+u8uQlddzYcLOsX6W7vscfmK6O3depR2U=; b=f/oaJE6GlP+U7/sekqG8nQkxdfkoCIrxyYLrrObHT5UJ7uCqnr4EBu7IWQFUYU6dG1t70Cp5PFK8WpJsVMexkojidK6TiZOASwYGBjL8nEhaD0o2n/U0O+t6dXOIHWtDxNkF2A2MTV24ar5s8ch2I6zbRGjhfMEPUFv9uPFBtJapVRFWZJhM3gj8Lfd1Ve7hkq/OiRjhCfNC2Buhum0cuDTJlMHwOTfYhrC84w8SpRdxGFJSNoYG+8viMEO62z00iU1c3+0Gv5aWEVQpWWuC7/0YE8TUcDbaJp92u3x/JHeV/84yhQ5pgLFUf0OyV+LanMg6G4Nd90mAyRVdxI61Cg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=windriver.com; dmarc=pass action=none header.from=windriver.com; dkim=pass header.d=windriver.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=windriversystems.onmicrosoft.com; s=selector2-windriversystems-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=1aBjv6rI0Q+u8uQlddzYcLOsX6W7vscfmK6O3depR2U=; b=Er3MggTNCdR56sPm2uz2+T/KefUWstAnRgCGJxgXLsthB24DVfNqqGvf+QkRDyW9Y6DgZWrYm1GPhvP1OF0CRu0Y8P/tGEwe6GC+zmoSmeCkmeGiZ8QIjrN6PWluxLGVpqyLKfrRb/pLQMPOKSuj2aW8MTqvud2+KE5VN+vm7lQ= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=windriver.com; Received: from BY5PR11MB4241.namprd11.prod.outlook.com (2603:10b6:a03:1ca::13) by BY5PR11MB4103.namprd11.prod.outlook.com (2603:10b6:a03:18c::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4129.28; Wed, 19 May 2021 04:39:27 +0000 Received: from BY5PR11MB4241.namprd11.prod.outlook.com ([fe80::551b:e310:2ae4:3011]) by BY5PR11MB4241.namprd11.prod.outlook.com ([fe80::551b:e310:2ae4:3011%6]) with mapi id 15.20.4129.032; Wed, 19 May 2021 04:39:27 +0000 Subject: Re: [PATCH] arm: make the size of vmalloc in cmdline and meminfo uniform To: "Russell King (Oracle)" Cc: rppt@kernel.org, ardb@kernel.org, linus.walleij@linaro.org, akpm@linux-foundation.org, carver4lio@163.com, tiantao6@hisilicon.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20210518111254.3820480-1-yanfei.xu@windriver.com> <20210518112932.GV12395@shell.armlinux.org.uk> <20210518120633.GW12395@shell.armlinux.org.uk> From: "Xu, Yanfei" Message-ID: <63618f13-07cf-6867-bcb1-7a725e6f3ef4@windriver.com> Date: Wed, 19 May 2021 12:39:16 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 In-Reply-To: <20210518120633.GW12395@shell.armlinux.org.uk> Content-Language: en-US X-Originating-IP: [60.247.85.82] X-ClientProxiedBy: HK2PR06CA0012.apcprd06.prod.outlook.com (2603:1096:202:2e::24) To BY5PR11MB4241.namprd11.prod.outlook.com (2603:10b6:a03:1ca::13) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [128.224.162.160] (60.247.85.82) by HK2PR06CA0012.apcprd06.prod.outlook.com (2603:1096:202:2e::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4108.25 via Frontend Transport; Wed, 19 May 2021 04:39:24 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 41ec39e1-9ffa-489c-fcb5-08d91a80156c X-MS-TrafficTypeDiagnostic: BY5PR11MB4103: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:3276; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:BY5PR11MB4241.namprd11.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(136003)(376002)(39840400004)(366004)(346002)(396003)(83380400001)(38350700002)(38100700002)(53546011)(6666004)(26005)(6706004)(6486002)(6916009)(966005)(66476007)(478600001)(4326008)(52116002)(5660300002)(66556008)(66946007)(16576012)(2616005)(86362001)(8936002)(186003)(16526019)(8676002)(36756003)(956004)(2906002)(316002)(31696002)(31686004)(78286007)(43740500002)(45980500001); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData: =?utf-8?B?VXJLcG92U1MvR0RDejZsRkRvb1FDT1RHMTBGOTJLOHNBcHppOE1uc1VCOE90?= =?utf-8?B?ZGswNTF1T3JQRHgwM3A2S0xaeU52cUdwOEw5UVVCbHdGbHl3VzMva1J1VXEv?= =?utf-8?B?cmVYbnFYY2c5cW5TVytwN2JxeS8wQkZhVmZpWVpiTTRKMm94bFBGMERqUmdq?= =?utf-8?B?Mm9yVDUrUWYrZVRUbHRKbHd1bEdSTGhuVmp4dFpBazJ4Y3g0NWdqZ3NWVGFQ?= =?utf-8?B?VVFQYkJCSnJzRERoTTEvWmVPNlpqSldZemhPVktuSkcyd1BTTzgrbTdhY0JN?= =?utf-8?B?NEtqTStKY3VyNmlQSVl0Rm05ZTQrVXFaWGFITFVLS1FqR3lqeU54MVVaVVpz?= =?utf-8?B?RVFsWkxHaUtVby9OZFdDV2wySmhHQ3h3cWVwTHpLMnV1ejZtUTQ3V2ZSUFNx?= =?utf-8?B?Uk0raEJGdnpjMmwyUjROaENRUG5ObmljdjNYVll6YnRJOUxrSFZuUDlqclB4?= =?utf-8?B?RlVyWUtFSzhRcWhoQ1pOcFJ1MzdTamh1Y3Y2TG9JVFRDZTlHSGtSa0c3N1RK?= =?utf-8?B?bW9sVGdVTG1xLytrYUQ3czdKRm80aTNYdmszSGtmOTJ6R0twblZuNDhnaTJ4?= =?utf-8?B?cU5tRWdSWU1IZ0k1aTJXSWQ2TnVkam1uQjlQSm1hWE9MdXR2SFhjcStGdW5y?= =?utf-8?B?OVNZTkdDOHpWWXZkL0pVYUdCUmcyWGNLK0Jpc0Y3UDd2cmt5RXN6bVJrVWU4?= =?utf-8?B?NnU0U0VQVU00ZzNYZVU0eWptZkxleUJKUWo5bkllemZuSytrbXJsT3NBaFJr?= =?utf-8?B?REYzbGlUNCs5aW8zUStWem04Qm5JTXczT0Fxa0JyTHc0UWVCQlNlejVaQmRx?= =?utf-8?B?OU5NWWZHekFqUTJKVXZ0TFJodUJKVXJLL1NzcWwvbDJLSGxlOEVOMWNYUGNv?= =?utf-8?B?SXo3UlZLSm1KOWxCR20xdm1jYTVZamZRWFFXNEhOb3graXZRZk5LcG9LRjl1?= =?utf-8?B?VnErWE91cHR4T0lmT1ZQcTlPYk4yNG1pUUpKZE1FeDdMVEs1Zm9iZFZOR2FM?= =?utf-8?B?TlpaUVVOR1J0OTQvUHp0bEhIMFNNVHl3Yi9Gc1dzNjV2RlIvWjBlMGpGNTFj?= =?utf-8?B?SXUrL283V0pXMnpycTB2NjQ2Z0ZXMlNOMUR5ZFU1MmQ5bEtSWXZ2RWcrWTlG?= =?utf-8?B?Zng2M2ZUOTRWb3V1TEFKWFZrNTU3YnBlYUFTSW83Z2Z4TXhvR09ZQkM5ZmZ3?= =?utf-8?B?dXQrUUl5anZkdDNGLzF4K2JTODdOVEpUVTBFUy9GRkt0cWV3WDJIS0Vac0d5?= =?utf-8?B?VjJTZUYxSEtQTFVNM1R6ZWZ3NHc1cWdVbVlua0R3c0x1N3VXWGxLZm5mZXdM?= =?utf-8?B?VUpxa0tnZHczUFVZbWVrdDhDMjFMYnZTc1hBY2tUcCtrRW90aGZGOUozdXVI?= =?utf-8?B?c2lGL1hIN2FyelRMWXVta0Zua2RLa1VpVGwyQzhpb1dFYnBoTWtHUUJnOXFu?= =?utf-8?B?M2tObE8xVnhuNTdFWVlPRXBFK094d0VkWHhwdFZjNzhsL0preE5nd01QRUQ0?= =?utf-8?B?SHVZZ1ozeU9YZGR6US9LQlk3M3VjWURPUEhDZnY4b2xZLzNqZ21PT3MwMFdR?= =?utf-8?B?TGlNcnJ4WktuOUh1U25hVUxZdFhERCthNjNEbmdEMEZmUFV4VkRFRHZrVGF5?= =?utf-8?B?RG1SYnl6ZFpsVGlZYjV1VHpWK0psRkxlN2V3K29uY2doOTFpK2t2bDlNSjJD?= =?utf-8?B?YzQxbVpaaHNwcVFja0JOOVJMUHl5cnQyTzh1akswOTk5K2Fjb0NrZTYxTkpC?= =?utf-8?Q?cwiptLxpItG20y+RGHU/UYTRInb80KZgw7OvOuN?= X-OriginatorOrg: windriver.com X-MS-Exchange-CrossTenant-Network-Message-Id: 41ec39e1-9ffa-489c-fcb5-08d91a80156c X-MS-Exchange-CrossTenant-AuthSource: BY5PR11MB4241.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 May 2021 04:39:26.9944 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 8ddb2873-a1ad-4a18-ae4e-4644631433be X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: S6CulLU5+es+0arRFPc1uVCxeFjlZn6VC8ORiQ4crIdIcx2GGs+Y/YB86MVQFXPREAhfxm1h58IMsY8kP8CsJQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR11MB4103 X-Proofpoint-GUID: -xA0ncXFsakokrhuo1S1HFOjOOJp5O1i X-Proofpoint-ORIG-GUID: -xA0ncXFsakokrhuo1S1HFOjOOJp5O1i X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-05-19_01:2021-05-18, 2021-05-19 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 mlxlogscore=999 mlxscore=0 clxscore=1011 lowpriorityscore=0 malwarescore=0 phishscore=0 bulkscore=0 impostorscore=0 priorityscore=1501 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105190033 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210518_213959_880558_AAD29E91 X-CRM114-Status: GOOD ( 22.55 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 5/18/21 8:06 PM, Russell King (Oracle) wrote: > [Please note: This e-mail is from an EXTERNAL e-mail address] > > On Tue, May 18, 2021 at 12:29:32PM +0100, Russell King (Oracle) wrote: >> On Tue, May 18, 2021 at 07:12:54PM +0800, Yanfei Xu wrote: >>> The value of "vmalloc=" set in cmdline is always 8M more than the value >>> of "VmallocTotal" in meminfo. When use the "vmalloc=" parameter, user >>> expect to get the size what they input, and no need to consider the 8M >>> "hole" hided in codes. This commit make real vmalloc size equal to value >>> of "vmalloc=" in cmdline. >>> >>> Also, the commit will reduce the size of vmalloc printed in boot message >>> by 8M when the size set in cmdline is irrational. >> >> Hi, >> >> I think I'd like to do several cleanups with this: >> >> 1. change vmalloc_min to be an unsigned long. >> 2. exclude VMALLOC_OFFSET from vmalloc_min, moving it into >> adjust_lowmem_bounds where vmalloc_min is used. >> 3. rename vmalloc_min to be vmalloc_start >> 4. enforce vmalloc_start to be a multiple of 2MiB >> 5. in early_vmalloc(), calculate vmalloc_max as: >> VMALLOC_END - (PAGE_OFFSET + SZ_32M + VMALLOC_OFFSET) >> and use that to set the upper bound of vmalloc_reserve (which is >> something your patch doesn't do, which I think is a bug. >> >> Thoughts? > > I've slightly modified the above idea, and will shortly follow up with > some patches to show the idea a bit better... > Thanks for making it better! Regards, Yanfei > -- > RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ > FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last! > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel