From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from CH1PR05CU001.outbound.protection.outlook.com (mail-northcentralusazon11010069.outbound.protection.outlook.com [52.101.193.69]) (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 25E033B7752; Mon, 21 Sep 2026 17:50:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.193.69 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790013013; cv=fail; b=gsmywBr7h85PncUTfr9C9tZO2aaq+IjfznqUx6DaTgERg05UA+puB4SJ33uOKXLGN+geNIh+MiZ+IzT/I74wApMJlVVIt5HKzxZufylFziEfRXax7rZnOfz+3UXQJJbLo62o/UKx2Px/5wZsOrFyU7Vxg4M1nJYrtMh+ynBwKhA= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790013013; c=relaxed/simple; bh=+vsfuzGs5jvUhmFZ4RKP1dpDxXe4f0AQZAHEDaxhyx0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=RWhw2NcfA2UOMevRoT9TcbOkPtFrKLE5yNhUV+877KkMMzfgXR2V/vQ4Ufz99maYpjNqsV2M2iP3MWzN8ui/IMmKTf7lhKOmcY36CyrpCmThttxoNjnaQnF2lomrHWC69ttuT1HFnU9LMrgBGALgbP8X0m3dg3FLhEQvDyhCQ+s= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b=JKT8Hvj7; arc=fail smtp.client-ip=52.101.193.69 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b="JKT8Hvj7" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=DJkqZLO1XZa7DE+AtSb0saHoSVS6NbpChQYeX0+kJbdNN8dHcFJdwl5RoUHvCGdtHLSc+TI2sn0/L2xyDJtFkBfbgf0P4Sz7mPluYZSwX3Mk3QdeTmaxiTtij3ivrKEN1xq06A8Vfsn6Ex6uzBdUFV1oQXQrXfIaHR3GKvTYjvvJy6t7FuuqHwBeLeUsv34u7V+RcgUFNm9cO8uIp/C8l1Vp/6ficVGy0JjifeBa6/GeIygXrlspqXZqJQRvpevtA4RWNf+jAyCgIvXT/cGsci4iUYHT3HPULsU7P0n/EB8rwG1TIxwb9zyu5fShe9BIZ5nsWtuchh8tqiAcwSjr6A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=+vsfuzGs5jvUhmFZ4RKP1dpDxXe4f0AQZAHEDaxhyx0=; b=xo5TYbDh1lSvdbW/akVnwu6jfBL+z5M26Zz2HkFzewB16SdEdnrhPnEST6cw6eR0XFH5/con4EsbUNJcjzZylcPLgA726ZXDgUh3I1wOkB2Vhvltt15jEAtD3mIhxaf0e6/USXOHUiHUtuznV0XOsWTG2nx1dze2NXs+X9DG73iGzwwaqL5oUzihm+cIDEJ9Xv4FUW0tajEHDHdA0eRGhn5EZXwpbQKCQ4FvVhbOLV0GM9mHgdtFnZr0ejQfK9YXzfWislzZJKFz0iBz/Wm4ekbnnR7KiBRnhKeq4ACNTdfmOBxcFWoFpdQDDEZExjfsSx0veCSLW0JiHu8KUg/3ug== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.160) smtp.rcpttodomain=huawei.com smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=+vsfuzGs5jvUhmFZ4RKP1dpDxXe4f0AQZAHEDaxhyx0=; b=JKT8Hvj75u0b9b1gGyHUY60WPXauKAFr07FSAL/OQJDXdaUJaJruRgTd3D3DzYtzhS5/If+dlDyIDTC447U9ofPxm10aSMvyk8/4oa02/6oUlvVwJEyo5/bU472hslOY9vxgebnoJ8DLkSjKnV1pqv9F1k6AZwdVS2KWhKtF7+OyYbg5ZWuO16aW3tcHcwSJZbY43k434yugTnFJ6VReglJgSTviJImp1mDCoPAbatZGR8fokyIRR7gpT4E2w//u40vg2yBriE+lYkSizmwOkB+EKNq0vI89vBDQ5VFpMZ77b3jukbZ909bR09sNDYtAtGvR+ugljcTFREWaPA/7FA== Received: from MN0PR05CA0012.namprd05.prod.outlook.com (2603:10b6:208:52c::35) by SN7PR12MB7154.namprd12.prod.outlook.com (2603:10b6:806:2a5::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.428.16; Mon, 21 Sep 2026 17:50:04 +0000 Received: from BN7PEPF000000AB.namprd05.prod.outlook.com (2603:10b6:208:52c:cafe::81) by MN0PR05CA0012.outlook.office365.com (2603:10b6:208:52c::35) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.451.13 via Frontend Transport; Mon, 21 Sep 2026 17:50:02 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.160) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.160 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.160) by BN7PEPF000000AB.mail.protection.outlook.com (10.167.245.235) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.451.8 via Frontend Transport; Mon, 21 Sep 2026 17:50:01 +0000 Received: from rnnvmail205.nvidia.com (10.129.68.10) by mail.nvidia.com (10.129.200.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.49; Mon, 21 Sep 2026 10:49:43 -0700 Received: from rnnvmail202.nvidia.com (10.129.68.7) by rnnvmail205.nvidia.com (10.129.68.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.49; Mon, 21 Sep 2026 10:49:42 -0700 Received: from dgx-1v-42.nvidia.com (10.127.8.11) by mail.nvidia.com (10.129.68.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.49 via Frontend Transport; Mon, 21 Sep 2026 10:49:42 -0700 From: Jamie Nguyen To: Hanjun Guo CC: Lorenzo Pieralisi , Sudeep Holla , Catalin Marinas , "Will Deacon" , "Rafael J. Wysocki" , Len Brown , Dat Mach , , , Subject: Re: [PATCH v2 2/3] ACPI: arm64: Add support for the FF-A FFH Operation Region (offset 2) Date: Mon, 21 Sep 2026 10:49:41 -0700 Message-ID: <20260921174941.2406319-2-jamien@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <6ed517b2-90e8-8654-757e-6c0730b7d321@huawei.com> References: <20260901192906.133670-1-jamien@nvidia.com> <20260901192906.133670-3-jamien@nvidia.com> <6ed517b2-90e8-8654-757e-6c0730b7d321@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN7PEPF000000AB:EE_|SN7PR12MB7154:EE_ X-MS-Office365-Filtering-Correlation-Id: 2ec3b11f-e101-4172-e71a-08df1808c2d5 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|1800799024|23010399003|82310400026|36860700016|10067099003|4143699003|11063799006|56012099006|18002099003|22082099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230040)(376014)(7416014)(1800799024)(23010399003)(82310400026)(36860700016)(10067099003)(4143699003)(11063799006)(56012099006)(18002099003)(22082099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: VaupfpM2x2pQfnnq2h3NXvfoDm6Ii1bj+bv9XCWm91ohQkLWNTrJtKeqPVakfQ7QsT8KDjz/0LUP3PWs524G9lrBO26cqdD4/Asd5nAEarqzQDvdczzM1M+8pvnq1X3hccSlv90b1/VrmrFlvgyUzv19RnUF31OnNfExqZ/4tHtNUW/rSrzJKCDzLqA/bAgCYeMJF01sdg/AskroHCdUntkJwSy/bbjhUlRbTDxvudij07QCibTpxwM30RFZHZHseihOztovVEhqYHDYJn107Q1LyDASfmNsdV4yf0ofjYC/WM3i1ufWs2zK+sAjTN2Heku+SAzEoqr7x/LXpeb5RlYTr46XuitlwGRN/fsWGqMIG1nk7IXamdyejrfSF/8M02ScO0WXUKAmbYiU/tZu24zxyWVnXEx6I2sa45QLt9XIZmbJrhJQEsxerRvQ++lg X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Sep 2026 17:50:01.5737 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2ec3b11f-e101-4172-e71a-08df1808c2d5 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN7PEPF000000AB.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB7154 > There is a acpi_ffh_ffa_length_valid() check in acpi_ffh_ffa_handler(), > is it a duplicated one here? A failed acpi_ffh_ffa_length_valid() check is reported through X0. However, a region shorter than 64 bits has no X0 field in which to return that status, so this path returns AE_ERROR instead. I'll add a comment explaining that distinction in v3.