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mx.microsoft.com 1; spf=pass smtp.mailfrom=citrix.com; dmarc=pass action=none header.from=citrix.com; dkim=pass header.d=citrix.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=citrix.onmicrosoft.com; s=selector2-citrix-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=R6GBDxKhS3qtdNf++KnrNQw6MnOkE9dFm6CLdC2q+Nw=; b=f4jtNwupFuQ73JHuAh3PWBQ12jS4hFpcut3RBs4AbIwNgsByebP/pM9xS/5mtOxif5lttY9QZhOSYJ2C6UexTu+WW/DBV4W7xohpin2XwjMldVUFrOpMcPbOnSmgNKNT/KdHWyj6OBUgdS4hfxjW+lPoUVnLXgd1yv+wgy/IbfY= To: Jan Beulich , "xen-devel@lists.xenproject.org" CC: Wei Liu , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= References: <5d7c61b0-8441-dccc-4917-cc8a436fd96f@suse.com> From: Andrew Cooper Subject: Re: [PATCH 2/8] x86/EFI: sections may not live at VA 0 in PE binaries Message-ID: Date: Thu, 1 Apr 2021 13:01:11 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 In-Reply-To: <5d7c61b0-8441-dccc-4917-cc8a436fd96f@suse.com> Content-Type: text/plain; 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X-MS-Exchange-AntiSpam-MessageData: =?utf-8?B?RXpCYmVzb1IwRVoyV1ZWVEV4NTFMaUFKZUxHdlpGYTlLVWV1U0dnbHRFTWZN?= =?utf-8?B?aWQwTzFvbjhHeDlYMkJFbFlicU10NWtRZ0FpMVBmY2dJWnJvUGpZSVhqbklN?= =?utf-8?B?czBEK1lMMCtlYW81Wm0xZ0FIOXZsQ2lGc3NBQ2V1Qy93bnhxNUhVQnZnaHZH?= =?utf-8?B?bFAxajBMMGlwNWlDd0JKTzlXRVlxRU1wUjh4dzdSOUEvQmJsNy95dFZWVDRE?= =?utf-8?B?YnZpT0ZLWFovRUZlRjdDOG1pNFVrQkNnbTZNa0RYZDlEN2tJdnk3QVpTOEZT?= =?utf-8?B?L1FYWkxZVEtIK1RGRWl5RHFPZjcxRGFVWE53UXMxQmxnMUdzN0djMk1QZGZ4?= =?utf-8?B?cXhlb1gyaEh5TUhCOHlhQUt2enlHMjhOM2NuNW5hVzNJWUxMdzBpOGpFdW11?= =?utf-8?B?M24wWmRJM3NoOW1MYUJzdElWaGRaRkdCTGhDaHgvcTNlSjNHR0pLTU1DcXh5?= =?utf-8?B?VkNWQmpGbjMvRDBpRElCVUFNUmhWeGg5akZ0VzV0akZjYklGUTROR1E1VEZJ?= =?utf-8?B?M0NneTMzT08vYk5kbktsK2JVREVqdHp5dEJ3MWVYL25YODRTM1B3YXc0VXJX?= =?utf-8?B?U2FzWWE4M0dQdGpkbVplWHlicnkzTjBSSFUyd0VONHJNOGdkeXc0QTdsNFpj?= =?utf-8?B?ZllNeGNsZ3J3Njl6ZkkvSHpROFZ4RGpmYnRSa1YxMkl4MHd0NEdmdXBYT3p1?= =?utf-8?B?VklEWWd3Q2ZDRXZWalVWWVZWSXdIQ0Y0Q2dEcjZTZXR1Z25KR0NRbnlxcjdS?= =?utf-8?B?NHdma2ExSExpOVIxVGwvSzRXSGJtY21QN1ZubEVFbHBuMmlwUVA1Q25oM0w0?= =?utf-8?B?SEJDVUN2SFBiMU1rSm9NaFBycU9HekVMcEdQZXMvRkcvT3NGckxrVjNTZ2FB?= =?utf-8?B?dFpybUQ1UmxMMjFsWDQwTDgrbjNpbm5UdHQxemJzQ3ZDbG9Tb24vUkFENU9W?= =?utf-8?B?TUl0a2NYVzE5NWp4MlZsV2xyVGJXVFlNNk0yUEdxQ3lZRndiN0JmbExYYVlq?= =?utf-8?B?NkVwaHBKNm8xcGhHMm1rbVhoMHRrMElPNzlHVXovU0xJajdMcGE0ZS9DMlRY?= =?utf-8?B?OHdpUTZKdDBVU2k3NXFmWmp3UllKSHozTE44VnNGcXVYR0FEdWVMNzZUbnBD?= =?utf-8?B?ZGErQ0FTd0xVRDlPdU0ySkg0WG9WeGNSUDBCN2dFL0IwektadE5IMlpIMmFx?= =?utf-8?B?Vm5vbndDcFVvL0JTOGVLNkpXOWQ2TWhNSnQ2SXgrMnQ3bEg0RDNEU2pkdyt2?= =?utf-8?B?OHVtN1dhbC9FQm9OZ1prWGpkT2FQV3VXK3VEaWE1VWpzM2hzdjArRzVJaUFL?= =?utf-8?B?S3NneHhudVRDUzJOZ1Q4OThkdDhjR0JkR2xxVzJZdDMyUllCdHJpdU5ENHd4?= =?utf-8?B?S0ZCQ2N6VFVrWk1Wbkc2VXN2VVpSZ0VVTmJlWWFqNmNJS0hYNWEyU3k3TjB5?= =?utf-8?B?Y3MvWVlwelF1eVAyYXNLdmhWcHF1STl0UW5iYWdlZndNWjJvdmR1Z1FSNTE3?= =?utf-8?B?LzlsNzJoMk9xcXIzSDdjNFJZQjd2Y1dMa0lkNE5SbWtCTlZZZ3VNZkhZTnFW?= =?utf-8?B?TFFEdktEdlhZamdzTlJRNmZiNC9VUnQ5OGtFNFVSNnV2bk4yOS9tYk1yL0Ja?= =?utf-8?B?b0pQS3ppQTNObWpMaERxUXAwSEZjRmlZS1B2SVROSEtGWi9DcFFQTGp0WEY1?= =?utf-8?B?Ym15ZFBRaG5DYXR0WGxrcEtsK2ZJdW9SVlVpekxVN2pyNklKRm9yMzhjOVBT?= =?utf-8?Q?XFv6vDyYHxYWPEm4CNaHr/Q0ldoa9UiRetRySoh?= X-MS-Exchange-CrossTenant-Network-Message-Id: 08c670dc-f1db-40d8-b902-08d8f505dac9 X-MS-Exchange-CrossTenant-AuthSource: BN7PR03MB3618.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Apr 2021 12:01:16.8749 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 335836de-42ef-43a2-b145-348c2ee9ca5b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: mH4H1YaiTJugoyxqgeKlDdfDeDEKgskewVaYFReFj7/hNVmyOJ3oePjPTT/+jKRFocgozcSQfeG+XExQoUti1Ace7hhv8b+i8pmKAKJ2b24= X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR03MB2964 X-OriginatorOrg: citrix.com On 01/04/2021 10:44, Jan Beulich wrote: > PE binaries specify section addresses by (32-bit) RVA. GNU ld up to at > least 2.36 would silently truncate the (negative) difference when a > section is placed below the image base. Such sections would also be > wrongly placed ahead of all "normal" ones. Since, for the time being, > we build xen.efi with --strip-debug anyway, .stab* can't appear. And > .comment has an entry in /DISCARD/ already anyway in the EFI case. > > Because of their unclear origin, keep the directives for the ELF case > though. > > Signed-off-by: Jan Beulich > --- > It's certainly odd that we have stabs section entries in the script, but > no Dwarf ones. Its not odd in the slightest, given the heritage and lack of anyone touching the linker file unless something is broken. We've got dwarf symbols in xen-syms, have we not? ~Andrew