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pr=C Message-ID: <30094c9c-3222-4347-9c83-059aa43f385d@amd.com> Date: Thu, 4 Dec 2025 11:44:39 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/6] arm/mpu: Implement copy_from_paddr for MPU systems To: Harry Ramsey , CC: , Stefano Stabellini , Julien Grall , Bertrand Marquis , Volodymyr Babchuk , Hari Limaye References: <20251128095859.11264-1-harry.ramsey@arm.com> <20251128095859.11264-2-harry.ramsey@arm.com> From: "Orzel, Michal" Content-Language: en-US In-Reply-To: <20251128095859.11264-2-harry.ramsey@arm.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A105:EE_|IA1PR12MB7615:EE_ X-MS-Office365-Filtering-Correlation-Id: 8e69d79d-a5ad-42da-984e-08de332222e0 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|1800799024|376014|82310400026|7053199007; X-Microsoft-Antispam-Message-Info: =?utf-8?B?Wm0rSnpsWFR6a2pObCtJZzl4cVdESjkyQXBZMkZidWlYQXJJdFNiNHIzNW40?= =?utf-8?B?dkRNMkFtT21tUjQ5dWMwazBCNVRIUmZ3NFJ6VnpqNlhBT2tIMERmSTVxQ3JB?= =?utf-8?B?QXhoM04waXkvc3ByVGlHNmg1Q0k3dDdLNnhwSXZ4SHdMMEpPZ3V2QXlCZm5I?= =?utf-8?B?SlZiaGxLUGZMT3pDcEhUSDVRQ0ZzQlJPTEkra0x2RnNtR05yemtSUHdGVXFw?= =?utf-8?B?bXlVMGZOcmVFbGY0dTYvMUVpcDlMcmQzUzRFK04ramRZdDdBalV4VjBad3Uw?= =?utf-8?B?TldzWGl0eDNONUNKSStxQjhqU1loWTNaNjJDM0lVc01oWFBROEwxa0p2eGs4?= =?utf-8?B?Znk2cTU5eW5jV3g1MWNVZFJXZ2NhVEQ1YTFlaGlPRHd5Q2xqS0crRzVncFh3?= =?utf-8?B?OFlBU00zazBKNEdtbUJGZFM4NEpoRGtPS0o1ZEE5dFNlbEdOM041bW5XT0dr?= =?utf-8?B?Wk11QU1SbElaWE5pYVBGMlIwRlRGR3pQZ20xclFDb2RLQXFsRVJ3M2ZBWDkv?= =?utf-8?B?ZUhzWEthT3NJK1Y5ejFJMDhhYXlUejBLdHV4VzV5RDJXRVNPanpsamFENkNo?= =?utf-8?B?NnBKNXgzNHN1RGEyZUhZSDdNeU82YmFUQ0F1N0h5blAveWpSWVFYb2M4bElK?= =?utf-8?B?QXUxa3JuaFlPNmwwSzZxWEhidGdmamdidXZwV1VwVjJZWkpXelVDRVBJaGsr?= =?utf-8?B?aWxpczBWOXZBMkVDSWxVZjFlOHA4cXlQNWY5SDJpRXZEN3B0STFOWFNGL0FE?= =?utf-8?B?V3kxbUNCUzJzcEdLYmFkQ2tkNktuZlpna2psY2I3Nms1Lys0WU5yRTBkMUhq?= =?utf-8?B?OUVVWFhRMllRVnV3azI5Vnhob1pnTW9MRm85K0Yyb2hvc0pnZUtVc3BjbGRS?= =?utf-8?B?Y09ySVVTOG5BMFNkbnQ0VitBMzhpNWs2dmpROStobUM0Si9sL3JHanc0bFpx?= =?utf-8?B?TFBOTHpjd01pd09DbVFnbHNnNCsvWHltMVlhem9lMjNRcm5CN3NtRDJ1R0Rm?= =?utf-8?B?QXIzTFZUUG5aTHdDSzB3d2NDTEwvczM4QXdGQ3NPTjRhSFFVb05IOEdIemJM?= =?utf-8?B?N0NTZGJKak9ON05kR1hsVjJlb0lxMmY1a2JodXdpYXBuam9VNURnN3k5SmF4?= =?utf-8?B?MzVkdUpZd1JiNHcvNHpXWmhCS283MGNZUEpLMmF2T3pNS2FQYjJRN21ncENZ?= =?utf-8?B?SjJCMXFSR0xZZFhKenNXeDJtSWFuNExtUVhEM3c4MEFINmJ4RUFCWGVIOUxB?= =?utf-8?B?RGJOY21zOFpvMEZNRTA3emRwckFISHBJbzlKR3BKUkp0UGRlMEpibnlTZ2Z2?= =?utf-8?B?dEJPWktTZ0hNZFhlU0hzM1FWaWp4QmdrWFVUU2QwejZWNFI4SXg2M3R1OXpj?= =?utf-8?B?aFQvcnliVExUUUJUbCsrdEsyRm5mTFFoQmZPYTRiQnh5RGhlTm5XOFlCYXcv?= =?utf-8?B?VytNOW1jdUN6QTdZUkNGQWs5czFTa1cxSjlBRTdNcU0rWXVOTGRGemM5NGpL?= =?utf-8?B?bSsyZTY2TzNuWlRWanRsVFdPODlZdHRYZE8rNHBiZGpaWXlybE8rcDJhckty?= =?utf-8?B?ck1WZjBSODdLY2E0YWZKa2dTK01LTThCNVRBblFzbkFDYWNpVnJqRVhLaEdq?= =?utf-8?B?b3hmNGhvRVQ0bmx2NzRtR0pnZUR2SkF1aXBZOGpOWHN2cVRXemlBbXBmZTZY?= =?utf-8?B?YURtemZ5K0ZiU0g3V1VvQ1FvYkxFWXR4R0xteExxRkxnQlVEMXZqUEVhVThR?= =?utf-8?B?WS9nczQvV3k4RDFFYTdnZ2d2TUpVZnllNmtTaWZFci9ublM2YThRUHYrMkJ0?= =?utf-8?B?a0M0UHRKeHNoOU5ZU1BFZkZZR2N0WUs1OVE1b2VoQzM0Ullnako1aHcwOUdB?= =?utf-8?B?czlxVmYyRHhLTGh4SU52MmdWUEFLcC9QcjFuK0ZLb1FXTWhiK2tESGxkeUIx?= =?utf-8?B?T2FmOXpWWFhra3YxUlRDTnlmZTZjdmIzNkppbGtDK0pTUUFIbzR4eW9HU0dW?= =?utf-8?B?TEVzWGJ4MEJpL2JKOHJTMHQ0Z3ZCeDJNdE1hSnFWeFZHVWd6QW5ESGRLZTU1?= =?utf-8?B?aEhCc0RRVjZLZUlrSkVhbUxFaFRBVVhiSi93WDlhZWptZElDbmQ2OWNrMlla?= =?utf-8?Q?0HNU=3D?= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(36860700013)(1800799024)(376014)(82310400026)(7053199007);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Dec 2025 10:44:43.9789 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8e69d79d-a5ad-42da-984e-08de332222e0 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=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A105.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB7615 On 28/11/2025 10:58, Harry Ramsey wrote: > From: Luca Fancellu > > Implement the function copy_from_paddr variant for MPU systems, using > the map_pages_to_xen/destroy_xen_mappings to temporarily map the memory > range to be copied. > > Signed-off-by: Luca Fancellu > Signed-off-by: Hari Limaye > Signed-off-by: Harry Ramsey Reviewed-by: Michal Orzel ~Michal