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Received: from PH7PR12MB6882.namprd12.prod.outlook.com (2603:10b6:510:1b8::12) by IA0PR12MB8303.namprd12.prod.outlook.com (2603:10b6:208:3de::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.339.8; Wed, 19 Aug 2026 19:13:05 +0000 Received: from PH7PR12MB6882.namprd12.prod.outlook.com ([fe80::6d0a:d79f:abf2:d544]) by PH7PR12MB6882.namprd12.prod.outlook.com ([fe80::6d0a:d79f:abf2:d544%3]) with mapi id 15.21.0315.008; Wed, 19 Aug 2026 19:13:05 +0000 Message-ID: Date: Wed, 19 Aug 2026 14:13:03 -0500 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] firmware: arm_ffa: Unmap Rx/Tx buffers on shutdown To: Sudeep Holla Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, mochs@nvidia.com References: <20260818224404.3694580-1-csoto@nvidia.com> <20260819-aromatic-albatross-of-virtuosity-2406c5@sudeepholla> Content-Language: en-US From: Carol Soto In-Reply-To: <20260819-aromatic-albatross-of-virtuosity-2406c5@sudeepholla> Content-Type: text/plain; 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The original author/reported never > got back. > > -- Regards, Sudeep [1] > https://lore.kernel.org/all/20260729-nostalgic-accurate-raccoon-ab7d7e@sudeepholla Hi Sudeep, Thanks for the pointer. I tried your patch from [1] and it fixes the kexec issue on my setup. I also tried limiting the shutdown patch to just RXTX_UNMAP, but that is not sufficient here. The next kernel can still fail notificaion setup with: ARM FF-A: Notification bitmap create error -13 So I agree that using the normal FF-A cleanup patch from shutdown looks like the right approach, since it tears down the notification bitmap state as well as unmapping the Rx/Tx buffers. Are you planning to submit that change to resolve this issue? Thanks, Carol