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b=Sf8k///O2kKfegbqJ9FCiUPqH+qGa+EyRccqixMoVKVXcMk6KWkYXJt1J9MAA7bWJMS4ZKazQejPeoMkGt1sTeUAYIytxkN44V/mtvCbY0is9M3AabEv4Lk+vZEoAA5S27RlZkNX2DIPIHkdXXNylA/GTlHGKt44Cnh5rdpCHRw= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=amd.com; Received: from IA1PR12MB6043.namprd12.prod.outlook.com (2603:10b6:208:3d5::20) by DM6PR12MB4483.namprd12.prod.outlook.com (2603:10b6:5:2a2::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8534.28; Thu, 13 Mar 2025 10:28:20 +0000 Received: from IA1PR12MB6043.namprd12.prod.outlook.com ([fe80::73e4:a06a:f737:e9be]) by IA1PR12MB6043.namprd12.prod.outlook.com ([fe80::73e4:a06a:f737:e9be%3]) with mapi id 15.20.8511.026; Thu, 13 Mar 2025 10:28:20 +0000 Message-ID: <08816382-f02c-4f98-a355-a4aa5af16d86@amd.com> Date: Thu, 13 Mar 2025 15:58:12 +0530 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 2/8] iommu/amd: Add debugfs support to dump IOMMU MMIO registers To: Dheeraj Kumar Srivastava , joro@8bytes.org, suravee.suthikulpanit@amd.com, will@kernel.org, robin.murphy@arm.com, linux-kernel@vger.kernel.org, iommu@lists.linux.dev References: <20250206060003.685-1-dheerajkumar.srivastava@amd.com> <20250206060003.685-3-dheerajkumar.srivastava@amd.com> Content-Language: en-US From: Vasant Hegde In-Reply-To: <20250206060003.685-3-dheerajkumar.srivastava@amd.com> Content-Type: text/plain; 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To get mmio registers value for iommu > # echo "0x18" > /sys/kernel/debug/iommu/amd/iommu00/mmio > # cat /sys/kernel/debug/iommu/amd/iommu00/mmio Many of MMIO registers are 8 bytes. By default can we print 8 bytes instead of 4 bytes? -Vasant