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rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: [PATCH V1] accel/amdxdna: Disable device buffer exporting Content-Language: en-US To: Mario Limonciello , , , , CC: , , References: <20260526185058.1780869-1-lizhi.hou@amd.com> <28dc206a-695d-482f-b434-c27eda960bfe@kernel.org> From: Lizhi Hou In-Reply-To: <28dc206a-695d-482f-b434-c27eda960bfe@kernel.org> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA2PEPF000015CB:EE_|BL3PR12MB6401:EE_ X-MS-Office365-Filtering-Correlation-Id: 8e87f3a1-1b31-43e9-fedf-08debd3a8548 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|376014|1800799024|82310400026|22082099003|18002099003|56012099006|4143699003|11063799006; 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:NLI;SFV:NSPM;H:satlexmb08.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(36860700016)(376014)(1800799024)(82310400026)(22082099003)(18002099003)(56012099006)(4143699003)(11063799006);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: RD4Dq/t00tn12hfqTE4Tg58RKMmdbMGRWlX+vgNsc1QESs0Hz+ML5y0cquDTuncD3/oGsE6rx/Wb4hIa6Y1CDQN35tPqkjgfWyxEGEF0oYxDtYkapPFKf4Q5FsYcKQfVtZOV2z2I8bR8mJTlHSN1TxXznT7en7f1JJPhBqzlXdo6rOsjET5ZPEfGImtwt5V1D9UARBrd/Wy4RK1XULQZRmLMN66hKLEcmENvODoLaEGHDTlyVGY8RfksUjQJyyUKs0ts06XSDxS+R+rp7Rqri06f6KasgCgKC18XcC+HXhalKvoH3zVQXOUUzzoSbpkPcRdHrJ5HbVzsX8E4uli6Fu5I3VuTQufPfT35bDLHCIqzzhjngoTHMi19o4bwUADdgt5vUQvp9Wdqk7/WpKLTsZr9/xFjoIkLN1AB2GvuxBECpra9wRD4bfkUka/w27NX X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 May 2026 04:26:57.4483 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8e87f3a1-1b31-43e9-fedf-08debd3a8548 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=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SA2PEPF000015CB.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL3PR12MB6401 Applied to drm-misc-next On 5/28/26 14:19, Mario Limonciello wrote: > > > On 5/26/26 19:50, Lizhi Hou wrote: >> Device buffers are never intended to be exported. Disable exporting >> support explicitly. >> >> Signed-off-by: Lizhi Hou > Reviewed-by: Mario Limonciello (AMD) >> --- >>   drivers/accel/amdxdna/amdxdna_gem.c | 6 ++++++ >>   1 file changed, 6 insertions(+) >> >> diff --git a/drivers/accel/amdxdna/amdxdna_gem.c >> b/drivers/accel/amdxdna/amdxdna_gem.c >> index 2dfdc56ba91d..2727e48afc0a 100644 >> --- a/drivers/accel/amdxdna/amdxdna_gem.c >> +++ b/drivers/accel/amdxdna/amdxdna_gem.c >> @@ -725,9 +725,15 @@ static int amdxdna_gem_dev_obj_vmap(struct >> drm_gem_object *obj, struct iosys_map >>       return 0; >>   } >>   +static struct dma_buf *amdxdna_gem_dev_obj_export(struct >> drm_gem_object *gobj, int flags) >> +{ >> +    return ERR_PTR(-EOPNOTSUPP); >> +} >> + >>   static const struct drm_gem_object_funcs amdxdna_gem_dev_obj_funcs = { >>       .free = amdxdna_gem_dev_obj_free, >>       .vmap = amdxdna_gem_dev_obj_vmap, >> +    .export = amdxdna_gem_dev_obj_export, >>   }; >>     static const struct drm_gem_object_funcs amdxdna_gem_shmem_funcs = { >