From patchwork Mon Feb 19 21:11:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kalra, Ashish" X-Patchwork-Id: 203279 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:693c:2685:b0:108:e6aa:91d0 with SMTP id mn5csp42438dyc; Mon, 19 Feb 2024 13:12:32 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCW8cY+EktYHFhJljp8hA3hvdJeaTNx97+fPnStOEglMXo0HE+9M2ns4rMlqqbWb5Eaj8BfuGkO2sfMrSm5MoZ34GfTmvA== X-Google-Smtp-Source: AGHT+IFVEs1Gjqj/0HnzxZPCp0MzfCRC2lA954U3eHpgVTWz+8hGrKWd07tZpwLfVH/jcrZDHvYh X-Received: by 2002:a17:906:b0d9:b0:a3c:f048:c9eb with SMTP id bk25-20020a170906b0d900b00a3cf048c9ebmr9186510ejb.12.1708377152190; Mon, 19 Feb 2024 13:12:32 -0800 (PST) Received: from am.mirrors.kernel.org (am.mirrors.kernel.org. [2604:1380:4601:e00::3]) by mx.google.com with ESMTPS id m19-20020a1709066d1300b00a3eee918835si101157ejr.86.2024.02.19.13.12.31 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Feb 2024 13:12:32 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-71992-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3; Authentication-Results: mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b="HwD0a/z7"; arc=fail (signature failed); spf=pass (google.com: domain of linux-kernel+bounces-71992-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) smtp.mailfrom="linux-kernel+bounces-71992-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by am.mirrors.kernel.org (Postfix) with ESMTPS id 96E371F23C64 for ; Mon, 19 Feb 2024 21:12:31 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 274BE53E39; Mon, 19 Feb 2024 21:12:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="HwD0a/z7" Received: from NAM02-DM3-obe.outbound.protection.outlook.com (mail-dm3nam02on2078.outbound.protection.outlook.com [40.107.95.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 62F452E40C; Mon, 19 Feb 2024 21:12:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.95.78 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708377135; cv=fail; b=b55KAFZQnp9RjGhIh0AiL8YcAWm9l9IUZH/arMe6FS9nNHgLth+57WdKy7XxaI23XjX2XZagIILCHZzAiUGZObNYPf0nJdckcV/c7Aohkpt+A+opz0IV569aH2hJpcTlAdvWaQgLGSCqp6y8zRteDYJJMZTRvUX3UjYOd87H8xI= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708377135; c=relaxed/simple; bh=eV9PVuyzpZ70I/pu9Z3stgOdL4n4O5Q3lijY/WMVqA0=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=HJR3MZ3DwKwvtuxfdBxCoMKLQuuYSsb1x7IzDkk/t21LZ7sQvu2M77+LZrH8ymycnDfYRaYA4Yh5MlglR3J59nbWuQkZMMSknb2u1/3D1g3XGIrjr0zPioVC5jFzE9/MBD+tdTNNymFfU8LHu11Xe3Pbgw02BZ0UNKQ64IIfD9c= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=HwD0a/z7; arc=fail smtp.client-ip=40.107.95.78 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=TGXR/RFgHIwl55y2sSHxH5H7WZICoZh1sdRsVuZCjLIWvC5TUOu0VNz85wENCL1GUajwUXc0yXqUhloZUt28kzqRproM7Zt+g7P1dH7z9Z59Nidirm/EhMvoCuCyvwceI9ff+bydvQUKTKUdjxiW20WHlryIIy92DSrqT7Z1t2NTFlGncL+t/Y1hPKEcQeVJ2lShMugs19GFxRvvESBRp50u+BZSAM+feS+NuG5Upkx9YU/L3vc0GF6rT0eqQCBGPlBsLjfvKUz/0i/WCnO1HHF2zGOQ68nqXuDtzgjz6TsmJMqAq2YAJK9d7Wff8Gb+Jsqzll5uPVeSyWGD3obiEw== 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=y6PG7rDVf4cEk4RqzZVKG6iYnAzchQ1zPvQVV5Q2L+4=; b=Qr8R4pxaY1LxSb5a7EGqFOd+up6aYX99Gn5p2sMZuuB4u+B4fkwc61Aa3+I70cnconaNf4LJya3yxyWeym8c2TNDaBrIudCfrfP7zmGoAhjVV2iRfH1f5Jpv/UfFLojPPvb4AvjtdhzDnjSF9TQ6CJYul6rKzHD/dM0hcMRazWSsWlq5ZzeTFglR8PQZEy+Su9iKSUu7AX1qGwrAa1TYHriA2fcb5T3T4dZEW6FddZbKn/CtOQ1XO/UzQ8BNXvSok7tDQialRjZxTmKMRLOcVmbr/q+QW1VaOyxU9ByS2fJkTdNn2PZG7F3TV/vfL/WLvBEY9dgqfpZYne5YZAZZ8w== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=linutronix.de smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=y6PG7rDVf4cEk4RqzZVKG6iYnAzchQ1zPvQVV5Q2L+4=; b=HwD0a/z7KGyd6k8usNyKZg+PWsjCFcXWXXqPjvds5Lh2x/gz/cgQJd9MX4UofgfyuyZWN1gkDXrB4/DFPbmGnn9Q4OOjae9IB2wjz+UOfS/aKcuu6EbAqQuCDpR00qXGfMOWKvqtxDe4fu1Z8AfkaK+Vuoe+WkJV6WBO1hvk4CU= Received: from BN6PR17CA0054.namprd17.prod.outlook.com (2603:10b6:405:75::43) by PH7PR12MB7233.namprd12.prod.outlook.com (2603:10b6:510:204::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7316.16; Mon, 19 Feb 2024 21:12:09 +0000 Received: from BN1PEPF0000468E.namprd05.prod.outlook.com (2603:10b6:405:75:cafe::d0) by BN6PR17CA0054.outlook.office365.com (2603:10b6:405:75::43) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7292.39 via Frontend Transport; Mon, 19 Feb 2024 21:12:09 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BN1PEPF0000468E.mail.protection.outlook.com (10.167.243.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7292.25 via Frontend Transport; Mon, 19 Feb 2024 21:12:09 +0000 Received: from ethanolx7e2ehost.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Mon, 19 Feb 2024 15:12:08 -0600 From: Ashish Kalra To: , , , , CC: , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH] efi/x86: skip efi_arch_mem_reserve() in case of kexec. Date: Mon, 19 Feb 2024 21:11:58 +0000 Message-ID: <20240219211158.768523-1-Ashish.Kalra@amd.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN1PEPF0000468E:EE_|PH7PR12MB7233:EE_ X-MS-Office365-Filtering-Correlation-Id: 9593f61e-3912-4aea-ae6e-08dc318f6f02 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230031)(36860700004)(46966006)(40470700004);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Feb 2024 21:12:09.1830 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9593f61e-3912-4aea-ae6e-08dc318f6f02 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN1PEPF0000468E.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7233 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791363280989036543 X-GMAIL-MSGID: 1791363280989036543 From: Ashish Kalra For kexec use case, need to use and stick to the EFI memmap passed from the first kernel via boot-params/setup data, hence, skip efi_arch_mem_reserve() during kexec. Additionally during SNP guest kexec testing discovered that EFI memmap is corrupted during chained kexec. kexec_enter_virtual_mode() during late init will remap the efi_memmap physical pages allocated in efi_arch_mem_reserve() via memboot & then subsequently cause random EFI memmap corruption once memblock is freed/teared-down. Signed-off-by: Ashish Kalra --- arch/x86/platform/efi/quirks.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/x86/platform/efi/quirks.c b/arch/x86/platform/efi/quirks.c index f0cc00032751..d4562d074371 100644 --- a/arch/x86/platform/efi/quirks.c +++ b/arch/x86/platform/efi/quirks.c @@ -258,6 +258,16 @@ void __init efi_arch_mem_reserve(phys_addr_t addr, u64 size) int num_entries; void *new; + /* + * For kexec use case, need to use the EFI memmap passed from the first + * kernel via boot-params/setup data and need to skip this. + * Additionally kexec_enter_virtual_mode() during late init will remap + * the efi_memmap physical pages allocated here via memboot & then + * subsequently cause random EFI memmap corruption once memblock is freed. + */ + if (efi_setup) + return; + if (efi_mem_desc_lookup(addr, &md) || md.type != EFI_BOOT_SERVICES_DATA) { pr_err("Failed to lookup EFI memory descriptor for %pa\n", &addr);