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=-5.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,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 BB6F2C31E40 for ; Tue, 6 Aug 2019 09:12:04 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 8765920B1F for ; Tue, 6 Aug 2019 09:12:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Yvux+cX9"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=armh.onmicrosoft.com header.i=@armh.onmicrosoft.com header.b="r0GlddTZ"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=armh.onmicrosoft.com header.i=@armh.onmicrosoft.com header.b="r0GlddTZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8765920B1F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-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=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-ID:In-Reply-To: References:Message-ID:Date:Subject:To:From:Reply-To:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=8NRQIGQG074T8peZlFXzJtvHJDRoM/6YsenbtXc6q/g=; b=Yvux+cX929K4gw 13tF+MPWeV6u+WhbgxeoLNEfbRHv9qxBYSKvsBwAgq6uU8HaTp2tsaXlyah6bEXfUZ66mBJsT0a0C 28hm97/PsnkqBy7P7Vrqi6XY0WlQedWd+bx3nEKKf3/mAPOV053m5zwkcUqYpLpvCHLUBtY1ga1qR pZNmzfcVqRA7cpVJS+v/m9wX+mOGmfS1Z4aEfm8NN9v1+CYwI1eOAfCMnxUGiqS7W2yCDx/v5oKuA celtfYKUI1xGGa7hURMDRkDitG/OMJCOPCgTXQQXJtk7m+MtCI+DWO5cXLw603RnMqAuO2pz2m/kg 8dOiu3fODnk9L2crZGDw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1huvVk-0003N1-0X; Tue, 06 Aug 2019 09:12:04 +0000 Received: from mail-eopbgr130054.outbound.protection.outlook.com ([40.107.13.54] helo=EUR01-HE1-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1huvVh-0003Me-4V for linux-arm-kernel@lists.infradead.org; Tue, 06 Aug 2019 09:12:02 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=armh.onmicrosoft.com; s=selector2-armh-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=oWs6qsweRK1V83m2vRauYZoWkmM87JnK/uaVYO66ncA=; b=r0GlddTZfDHO7poHqb9SWFxrYy1Pe2VmaQGwz/irFLOlJJegpd9DLotgGZOGhj9RlSRN6jQ3IFC+hW7n+qKJiwata7nw3fGlpKw1Oir9QcL4mGXjAFGJe/0oiWPjy5zHZ4ue62+w3IKa/z5vgUzXO7lhcOJFoXXiKc2X4KoTsII= Received: from HE1PR08CA0065.eurprd08.prod.outlook.com (2603:10a6:7:2a::36) by VI1PR0801MB1856.eurprd08.prod.outlook.com (2603:10a6:800:57::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2157.14; Tue, 6 Aug 2019 09:11:54 +0000 Received: from AM5EUR03FT056.eop-EUR03.prod.protection.outlook.com (2a01:111:f400:7e08::201) by HE1PR08CA0065.outlook.office365.com (2603:10a6:7:2a::36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.2136.15 via Frontend Transport; Tue, 6 Aug 2019 09:11:54 +0000 Authentication-Results: spf=temperror (sender IP is 63.35.35.123) smtp.mailfrom=arm.com; lists.infradead.org; dkim=pass (signature was verified) header.d=armh.onmicrosoft.com;lists.infradead.org; dmarc=temperror action=none header.from=arm.com; Received-SPF: TempError (protection.outlook.com: error in processing during lookup of arm.com: DNS Timeout) Received: from 64aa7808-outbound-1.mta.getcheckrecipient.com (63.35.35.123) by AM5EUR03FT056.mail.protection.outlook.com (10.152.17.224) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.2052.18 via Frontend Transport; Tue, 6 Aug 2019 09:11:52 +0000 Received: ("Tessian outbound 6d016ca6b65d:v26"); Tue, 06 Aug 2019 09:11:47 +0000 X-CheckRecipientChecked: true X-CR-MTA-CID: e38865c1734c979a X-CR-MTA-TID: 64aa7808 Received: from 0fc3f29db8d9.2 (ip-172-16-0-2.eu-west-1.compute.internal [104.47.0.51]) by 64aa7808-outbound-1.mta.getcheckrecipient.com id 45A301BD-1222-4D25-A165-007336BDF8C0.1; Tue, 06 Aug 2019 09:11:42 +0000 Received: from EUR01-HE1-obe.outbound.protection.outlook.com (mail-he1eur01lp2051.outbound.protection.outlook.com [104.47.0.51]) by 64aa7808-outbound-1.mta.getcheckrecipient.com with ESMTPS id 0fc3f29db8d9.2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384); Tue, 06 Aug 2019 09:11:42 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=EyD9nC9LSYYtC6GtBfFz8xeds6Z1lJCExyVxutlWdM4EMjJDVl5ilGAc5agDqsDMrbqAYMuiq1HTLSOEALP+YqVsBDXcTUfMslOIpiVdbzldC5FHVYVKkPky/jwv0Ua6mWaQYZzTcP5PTaR95woAMDvOuO8GhzlNcmvqyeyB5+usdhQ2dD/cliukBfSjrSp00vBbPP9HpVO8ptjEtwFLnJmUBg059H1sFV3ZxwQ2bkOxk4ThPs9vvtGSIwIp+oD+88NDywxPu7AOwXozTFy+M3pD8EUlzfiHrElHGpukuRs/Z22q0s7agvlpXmd9/431QSv4xSf8Pj0Bn3PAoAlUhQ== 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=oWs6qsweRK1V83m2vRauYZoWkmM87JnK/uaVYO66ncA=; b=PSBLEKk4BJlDHbiTq6peUQptpCcaSOZMWT60T7SLungPgPGflBcmERuBaFPPfW5+XSSDl8Az8BQcOpOjeYywWGr2V3WlE9yzVOXhoJutBXcmcIEPvfruh0Ahh+H6bcQqcVVusXaAie/F6Mh6ruk0nV7fOxFemze5FtW3Axgp0XysmTkb3RQBAbHxd28xrRgiyw0Uh2XJtoUkQVvHAaWS46/7w5L8v9e5p8ep//XEjr2g9Uaddr+HLvncwXIF745qKohyY2tStOEmgShY7q7Ab/j6kgHf6BSCjqcAl1p/vKtB8Nou24n3vgEKNs3mzt44dh11kE319l+QYiAkzw4YbQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1;spf=pass smtp.mailfrom=arm.com;dmarc=pass action=none header.from=arm.com;dkim=pass header.d=arm.com;arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=armh.onmicrosoft.com; s=selector2-armh-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=oWs6qsweRK1V83m2vRauYZoWkmM87JnK/uaVYO66ncA=; b=r0GlddTZfDHO7poHqb9SWFxrYy1Pe2VmaQGwz/irFLOlJJegpd9DLotgGZOGhj9RlSRN6jQ3IFC+hW7n+qKJiwata7nw3fGlpKw1Oir9QcL4mGXjAFGJe/0oiWPjy5zHZ4ue62+w3IKa/z5vgUzXO7lhcOJFoXXiKc2X4KoTsII= Received: from DB8PR08MB4105.eurprd08.prod.outlook.com (20.179.12.12) by DB8PR08MB5403.eurprd08.prod.outlook.com (52.133.241.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2136.17; Tue, 6 Aug 2019 09:11:40 +0000 Received: from DB8PR08MB4105.eurprd08.prod.outlook.com ([fe80::f558:a6c5:f71c:491]) by DB8PR08MB4105.eurprd08.prod.outlook.com ([fe80::f558:a6c5:f71c:491%5]) with mapi id 15.20.2136.010; Tue, 6 Aug 2019 09:11:40 +0000 From: Steve Capper To: Catalin Marinas Subject: Re: [PATCH V4 05/11] arm64: mm: Introduce VA_BITS_MIN Thread-Topic: [PATCH V4 05/11] arm64: mm: Introduce VA_BITS_MIN Thread-Index: AQHVRinKapQ74fBHb0+Sxx08Ez8jCKbs17OAgAEJ4QA= Date: Tue, 6 Aug 2019 09:11:40 +0000 Message-ID: <20190806091137.GA8365@capper-ampere.manchester.arm.com> References: <20190729162117.832-1-steve.capper@arm.com> <20190729162117.832-6-steve.capper@arm.com> <20190805172000.GL4175@arrakis.emea.arm.com> In-Reply-To: <20190805172000.GL4175@arrakis.emea.arm.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Mutt/1.10.1 (2018-07-13) x-originating-ip: [217.140.106.32] x-clientproxiedby: LO2P265CA0247.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:8a::19) To DB8PR08MB4105.eurprd08.prod.outlook.com (2603:10a6:10:b0::12) Authentication-Results-Original: spf=none (sender IP is ) smtp.mailfrom=Steve.Capper@arm.com; x-ms-exchange-messagesentrepresentingtype: 1 x-ms-publictraffictype: Email X-MS-Office365-Filtering-Correlation-Id: 295fa90e-616e-4f8b-0022-08d71a4e1f32 X-MS-Office365-Filtering-HT: Tenant X-Microsoft-Antispam-Untrusted: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(1401327)(4618075)(2017052603328)(7193020); SRVR:DB8PR08MB5403; X-MS-TrafficTypeDiagnostic: DB8PR08MB5403:|VI1PR0801MB1856: X-Microsoft-Antispam-PRVS: x-checkrecipientrouted: true x-ms-oob-tlc-oobclassifiers: OLM:8273;OLM:8273; x-forefront-prvs: 0121F24F22 X-Forefront-Antispam-Report-Untrusted: SFV:NSPM; SFS:(10009020)(4636009)(366004)(39860400002)(376002)(346002)(136003)(396003)(189003)(199004)(6116002)(54906003)(316002)(186003)(58126008)(99286004)(66556008)(6636002)(66446008)(66476007)(66946007)(52116002)(64756008)(6512007)(3846002)(229853002)(76176011)(486006)(6486002)(26005)(6436002)(446003)(44832011)(66066001)(476003)(11346002)(68736007)(6862004)(478600001)(53936002)(2906002)(102836004)(86362001)(7736002)(6506007)(6246003)(81166006)(8676002)(33656002)(1076003)(305945005)(71190400001)(4326008)(71200400001)(386003)(81156014)(25786009)(14454004)(5660300002)(8936002)(256004); DIR:OUT; SFP:1101; SCL:1; SRVR:DB8PR08MB5403; H:DB8PR08MB4105.eurprd08.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; received-spf: None (protection.outlook.com: arm.com does not designate permitted sender hosts) X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam-Message-Info-Original: Ax2gNQbm7omg0UKropxSP7le5F1OdIISBisgwYIW95B0D4Sta386aFy4gr6/CHZAJ6Xgn2ctfWWyrZ08Wr16+7gNGCDxV7gqYiy9tNRwv1E27gLrRQVsebT70UO3tLThxkAYC3ncCMaouh0dz9KQ7KVZLAtIc85R993M4BrEiO+ZHv1mIbuL1RD0K5bneuvvzKyxEOTms65qzJcLIUbzr/UNsPOXtXrdUaXVRSOWjUT7cr8cPG84kZA9uYW6Wl4bmzvda5us9YhrYCwpd7xTlqYMXS1gF4R57Dtb8HrsHfLIKTjvhVEW4ZROmbvJzz0P9Bwg3S9AfzhW9V3H+TWExVPcFYk+KqYBZksUWiAbOlZd6FSiSib7PuILKzSIKSjq5ubgeOV/48aMVKFudfJ9Qzf0q6U6BtFUfkTwh8Mdp70= Content-ID: <5457BE6080EEE34991F748DA1C805CF1@eurprd08.prod.outlook.com> MIME-Version: 1.0 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB8PR08MB5403 Original-Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=Steve.Capper@arm.com; X-EOPAttributedMessage: 0 X-MS-Exchange-Transport-CrossTenantHeadersStripped: AM5EUR03FT056.eop-EUR03.prod.protection.outlook.com X-Forefront-Antispam-Report: CIP:63.35.35.123; IPV:CAL; SCL:-1; CTRY:IE; EFV:NLI; SFV:NSPM; SFS:(10009020)(4636009)(396003)(346002)(136003)(376002)(39860400002)(2980300002)(199004)(189003)(126002)(70206006)(70586007)(47776003)(476003)(54906003)(76130400001)(1076003)(305945005)(7736002)(50466002)(486006)(316002)(3846002)(97756001)(6116002)(23726003)(8676002)(58126008)(336012)(186003)(99286004)(478600001)(81166006)(6486002)(33656002)(26826003)(81156014)(6246003)(25786009)(446003)(22756006)(6506007)(386003)(14454004)(6512007)(356004)(46406003)(5660300002)(63350400001)(11346002)(6636002)(86362001)(36906005)(66066001)(63370400001)(76176011)(26005)(4326008)(2906002)(229853002)(6862004)(8936002)(8746002)(102836004); DIR:OUT; SFP:1101; SCL:1; SRVR:VI1PR0801MB1856; H:64aa7808-outbound-1.mta.getcheckrecipient.com; FPR:; SPF:TempError; LANG:en; PTR:ec2-63-35-35-123.eu-west-1.compute.amazonaws.com; A:1; MX:1; X-MS-Office365-Filtering-Correlation-Id-Prvs: 6aaee4f2-3d3f-4d4f-980e-08d71a4e178b X-Microsoft-Antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(710020)(711020)(4605104)(1401327)(2017052603328)(7193020); SRVR:VI1PR0801MB1856; NoDisclaimer: True X-Forefront-PRVS: 0121F24F22 X-Microsoft-Antispam-Message-Info: kwi1WpYpLGxsAE3ub+RQ5RXkbl+HK+QkE+qxcasYdWkhd56h7sJ20Kw2V33qfEyOoeUknRAH157gh2NkAY8uzKMaQOvVbeO9rLiwfKfLmE2AQkmyewNKINbzZybtvNtV/OSgO8xZ/v4LMEFy3suU51TPUfoopV9YW5S7iGXRqhmlSV0IYnS0JJPoZin8+lsw2bAVevcbkde8m+h6fJGVypZdRXqPpUragzIzAr1fQwmBKZueOknNCdpPMhihAEFEP2WfYURhPfUBflAXTuMVkhlu7689m8YqCShKiMDQSUTx0ErH4f0c2oviMhIMQQn/fFDfZvmGbEISCzIQdUh8Bj0H3E4/Y4QsMyojJCerty65qD7qi9dvRfvHxzmSroM6EQWW8VG+rmcfe0KGE/VLloajsv4gF5gK5wkTUGc/VJY= X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Aug 2019 09:11:52.7514 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 295fa90e-616e-4f8b-0022-08d71a4e1f32 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d; Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR0801MB1856 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190806_021201_180122_F4579921 X-CRM114-Status: GOOD ( 10.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "crecklin@redhat.com" , "ard.biesheuvel@linaro.org" , "maz@kernel.org" , "bhsharma@redhat.com" , nd , "will@kernel.org" , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Aug 05, 2019 at 06:20:01PM +0100, Catalin Marinas wrote: > On Mon, Jul 29, 2019 at 05:21:11PM +0100, Steve Capper wrote: > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > > index f7f23e47c28f..0206804b0868 100644 > > --- a/arch/arm64/Kconfig > > +++ b/arch/arm64/Kconfig > > @@ -797,6 +797,10 @@ config ARM64_VA_BITS > > default 47 if ARM64_VA_BITS_47 > > default 48 if ARM64_VA_BITS_48 || ARM64_USER_VA_BITS_52 > > > > +config ARM64_VA_BITS_MIN > > + int > > + default ARM64_VA_BITS > > + > > choice > > prompt "Physical address space size" > > default ARM64_PA_BITS_48 > [...] > > diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h > > index 8b0f1599b2d1..a8a91a573bff 100644 > > --- a/arch/arm64/include/asm/memory.h > > +++ b/arch/arm64/include/asm/memory.h > > @@ -52,6 +52,9 @@ > > #define PCI_IO_END (VMEMMAP_START - SZ_2M) > > #define PCI_IO_START (PCI_IO_END - PCI_IO_SIZE) > > #define FIXADDR_TOP (PCI_IO_START - SZ_2M) > > +#define VA_BITS_MIN (CONFIG_ARM64_VA_BITS_MIN) > > Thinking about it, do we actually need a Kconfig option for VA_BITS_MIN? > Can we not just generated it here based on VA_BITS as min(48, VA_BITS)? > Thanks Catalin, I'll get rid of the Kconfig option. Cheers, -- Steve _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel