From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from NAM11-DM6-obe.outbound.protection.outlook.com (mail-dm6nam11olkn2019.outbound.protection.outlook.com [40.92.19.19]) by sourceware.org (Postfix) with ESMTPS id 357213858C60 for ; Wed, 9 Mar 2022 01:25:24 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 357213858C60 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=maskray.me Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=maskray.me ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=gtHHhJD+Bc31lMbU+lCXe8gxhijMk1n4Y1j8dGixFw1dQLjS2RtybmRizEhr4nJhS/cRtB7pn6RRlJ3lVASadMXh+ffzHqg5XC4rwh4y5rUU3hC4Nk22YB/4eaq4UYtikZj5nNRAw2ridE2qNJRN3TPkq4sWZHVDvIwFKyLORuq5HZEMG+MKk22/vdvbdTytcopWDBQzJTCA2joI3zH0WkyBQinwAUbPGV2LJJSArh8l79c1DQ0ZoKT3zj8HhxOCNLjRmOrGhQ4x2LFjt0KuSUz6d8sUM8JCGmgphwZMlqmWW7+EConAGxP1LWAjogmG2/3XngNxVfGg+WAu1L5lNg== 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-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=6PPKcqajZyGrH1s5EC7X0/qM73cc73mtzJiPGerpee8=; b=c4Uf5TNwDVXNDUmX66nLO9IAtihLgl8qocsFSNH7cGqUhHkJH5pO0ZA8ptEBH4MzR31936NDWmZ4uQH5wc7uvMa83BMHCVIMVPQWN3C2ZAyx7iV9IdapWddm1QhvXjJSWoelSV9ycPtrlkW95fZWuZuhbJJQVX3oS76dQsbt7Np2Wzv+H1uFHdib4Cnx9scnNtsXKb+gC2J5efUcs0r0m8Pc9uY7PiSE/8TMgQaniwZXJIXd1HkhZ40pmD2EKkGcs8p1SrOgBTwJJ+RHvdK9pKTLFXk/Mg0+UCcF+tU8Z0KhL/CzzQeX+lwY9Vk+5IIz4NaiykCLOERb+DrUqPuCNg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=none; dmarc=none; dkim=none; arc=none Received: from MWHPR1201MB0110.namprd12.prod.outlook.com (2603:10b6:301:56::8) by PH0PR12MB5499.namprd12.prod.outlook.com (2603:10b6:510:d5::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5038.14; Wed, 9 Mar 2022 01:25:22 +0000 Received: from MWHPR1201MB0110.namprd12.prod.outlook.com ([fe80::34e7:832a:93d6:d4cf]) by MWHPR1201MB0110.namprd12.prod.outlook.com ([fe80::34e7:832a:93d6:d4cf%9]) with mapi id 15.20.5038.027; Wed, 9 Mar 2022 01:25:22 +0000 X-Gm-Message-State: AOAM530foCK2na1xB3UyKq1iSjgQjtugh5+9P98JoTwXhQ5NUb11AnfG jZll+jwFJqndOF1NlPrDzgOe3LQrUXKutYs7rcQ= X-Google-Smtp-Source: ABdhPJxjDYK5BkOi7O2+toIXEfN/CHf1zSDC+kj9aQhvtI0E39coubzIyXoN7DUav4RY2DCg8kzHnNQeIz51KEkQcAU= X-Received: by 2002:a05:6102:2455:b0:320:d0b1:73e6 with SMTP id g21-20020a056102245500b00320d0b173e6mr5881678vss.8.1646789119670; Tue, 08 Mar 2022 17:25:19 -0800 (PST) References: In-Reply-To: From: Fangrui Song Date: Tue, 8 Mar 2022 17:25:08 -0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: PowerPC64 DT_RELR To: Alan Modra Cc: "H.J. Lu" , Binutils Content-Type: text/plain; charset="UTF-8" X-TMN: [++i7FNmx7hS2M1PR4CbE56ozHw8pbWxw] X-ClientProxiedBy: BN6PR11CA0011.namprd11.prod.outlook.com (2603:10b6:405:2::21) To MWHPR1201MB0110.namprd12.prod.outlook.com (2603:10b6:301:56::8) X-Microsoft-Original-Message-ID: MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 2e8c5706-e703-42ac-812f-08da016bae40 X-MS-TrafficTypeDiagnostic: PH0PR12MB5499:EE_ X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?MmhDL2VwaTJjcFR4S3RhT0tncTAvVWJxNk5kS0x1NDhPc1NlNHJibWFzM2Fz?= =?utf-8?B?SUFQd0Rkd29nYTd5OXhNSWNzdG9hQkFxbXV0cVBRbDZSMHVvNHIzaEMyaXpX?= =?utf-8?B?NHYwejhldFh5cWdLR1h2U2lGRWgzdFNQR3FLa3hYd1FyNlZKL09uRGRaYmFQ?= =?utf-8?B?QW1JTjRVQjhFVVM5YUZQQ2hoYXVSbVA4bEkxNmJsKzczb1pQSS9FWVZqQzJa?= =?utf-8?B?eTVDN3RrYnpvY294MmY3L1VJVHJtMjRmREhveEs5ZDlRS2R5K0wwMktOcmRV?= =?utf-8?B?czhVZVU4MTJ6Z0JyZU4xNkNlTllsbnM5L0dBaFFmbGRCOWRtNExqWktudG5L?= =?utf-8?B?cHU1YU1PNDk5TFZDc3ZBUmhrK1J5SWtjUG8xU1l0SGwzbGVrMDFoUmt1a0JC?= =?utf-8?B?MSszVDR5clhMNTJ5ZXg3VWRpamVNQzcvbXVqYXJIMnIyUEFHVjhRcnEyWnRK?= =?utf-8?B?ZDllTjlPTENXa0Y4Z2p3NTRkY2IvOUJNUmR0bWdIdlBjUkY4MVJ2ckd0czZI?= =?utf-8?B?akYxWEh1T1RVOEhrTTFIbGxIMjVtWkQ3T3VmQzRTM0I2bE5ZaVg1L0JvcXQz?= =?utf-8?B?UVlvK3kyK1F5cHJiMnNEejBYSWZWNGFrT1BnbXpML1h2RFlCY0twSUtUSkh4?= =?utf-8?B?MVBBTGVhcG85Szc1UFF2ZFV1UG5kNnpQR1hBZGdFNTNGQTNudS9rVkpWRlJC?= =?utf-8?B?clFPSXZZUVpteDlxSWdnbnVNdXFyMCtDVmluSDlhMUlEdmdDRFlvTmR3OXIz?= =?utf-8?B?VlAxcTkvd2g4MlFqZmJiMElrUmJ2b292S2tVcVBYdTRCWU83NU5zSUFHRFdL?= =?utf-8?B?cTN1M0tXdzRQbThRNW1KTjZGZWw3b1FCUWc1cENGRjE0Ti9iQndWbUxmeFRi?= =?utf-8?B?UDJIT1RlTVV2S2JJcVAwYWIyN3RyNmJUQS83bDNiL3ZyaVVJUlViWDdBYmVl?= =?utf-8?B?ZDZBZTJob2FaQUpLYks5RDBOVCtLaC9YbHhpN0E0VzMrakxoay8xMWFyZml4?= =?utf-8?B?Z0NoeXlRN0NvUHkrak5RZ3VWRmZmbHFXRXpUQzFIUG9xb1ZWd3V5V2VKVHUz?= =?utf-8?B?eDExMzlHVkJZdjdJbnVhYTllbkFNNExBbzBwcmxkbHZ3WGVpQU9vVGhIcmFs?= =?utf-8?B?OG5Zd3Q5Nm9URUJ5bUZoNUxOU2pQR29FWWU0RFBxTS9TSzZPNnJES044VTF5?= =?utf-8?B?bDNiN3Z6NjJ4VVNHTms4K2pSSXMwbFJ1VzM5b2RPNk14cFpRVjRJY1hHcy9H?= =?utf-8?B?VWFPVDdpQzJ2VE15VXhObHJWc1M0NjBONFZFNjRZMHYzZ2l6Zz09?= X-OriginatorOrg: sct-15-20-4755-11-msonline-outlook-71ea3.templateTenant X-MS-Exchange-CrossTenant-Network-Message-Id: 2e8c5706-e703-42ac-812f-08da016bae40 X-MS-Exchange-CrossTenant-AuthSource: MWHPR1201MB0110.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Mar 2022 01:25:22.6843 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR12MB5499 X-Spam-Status: No, score=-2.2 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, KAM_INFOUSMEBIZ, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_PASS, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: binutils@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Binutils mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Mar 2022 01:25:26 -0000 On Wed, Mar 2, 2022 at 12:41 AM Alan Modra via Binutils wrote: > > I had a look today at DT_RELR again, and found I need to do some work > in the linker. Just keeping addresses of relative relocs isn't > enough, because data addresses can change between ppc64_elf_size_stubs > and ppc64_elf_build_stubs. Anyway, the reason for the email is to > inform anyone playing with DT_RELR on powerpc64 that the current > support is definitely experimental! Also, you might like to apply the > attached patch to gitlab.com/x86-glibc/glibc users/hjl/relr/master > branch. glibc regressions went from 574 to 17. > > -- > Alan Modra > Australia Development Lab, IBM Thanks for testing it on PowerPC. It seems cleaner to fold 0006-elf-ELF_DYNAMIC_RELOCATE-order-relr-before-rel-rela.patch into patch 1. I adjusted my https://sourceware.org/git/?p=glibc.git;a=shortlog;h=refs/heads/maskray/relr H.J. may adjust https://sourceware.org/pipermail/libc-alpha/2022-March/136783.html ("[PATCH v5 1/5] elf: Support DT_RELR relative relocation format [BZ #27924]") HJ's series looks good to me (https://sourceware.org/pipermail/libc-alpha/2022-March/136784.html).