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From: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>
To: Vasant Hegde <vasant.hegde@amd.com>,
	joro@8bytes.org, suravee.suthikulpanit@amd.com, will@kernel.org,
	robin.murphy@arm.com, linux-kernel@vger.kernel.org,
	iommu@lists.linux.dev
Subject: Re: [PATCH v3 2/8] iommu/amd: Add debugfs support to dump IOMMU MMIO registers
Date: Mon, 17 Mar 2025 16:52:47 +0530	[thread overview]
Message-ID: <aac3de2f-8f76-4df7-8eb2-1f89a86cd91f@amd.com> (raw)
In-Reply-To: <08816382-f02c-4f98-a355-a4aa5af16d86@amd.com>

Hi Vasant,

On 3/13/2025 3:58 PM, Vasant Hegde wrote:
> 
> 
> On 2/6/2025 11:29 AM, Dheeraj Kumar Srivastava wrote:
>> Analyzing IOMMU MMIO registers gives a view of what IOMMU is
>> configured with on the system and is helpful to debug issues
>> with IOMMU.
>>
>> eg.
>> 1. To get mmio registers value for iommu<x>
>>     # 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?

Sure will print 64 bits (8 bytes) for MMIO registers dump.

Thanks
Dheeraj

> 
> -Vasant
> 


  reply	other threads:[~2025-03-17 11:22 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-06  5:59 [PATCH v3 0/8] Introduce debugfs support in IOMMU Dheeraj Kumar Srivastava
2025-02-06  5:59 ` [PATCH v3 1/8] iommu/amd: Refactor AMD IOMMU debugfs initial setup Dheeraj Kumar Srivastava
2025-03-13 10:27   ` Vasant Hegde
2025-02-06  5:59 ` [PATCH v3 2/8] iommu/amd: Add debugfs support to dump IOMMU MMIO registers Dheeraj Kumar Srivastava
2025-03-13 10:28   ` Vasant Hegde
2025-03-17 11:22     ` Dheeraj Kumar Srivastava [this message]
2025-02-06  5:59 ` [PATCH v3 3/8] iommu/amd: Add debugfs support to dump IOMMU Capability registers Dheeraj Kumar Srivastava
2025-03-13 10:32   ` Vasant Hegde
2025-03-17 11:23     ` Dheeraj Kumar Srivastava
2025-02-06  5:59 ` [PATCH v3 4/8] iommu/amd: Add debugfs support to dump IOMMU command buffer Dheeraj Kumar Srivastava
2025-03-13 10:38   ` Vasant Hegde
2025-03-17 11:24     ` Dheeraj Kumar Srivastava
2025-02-06  6:00 ` [PATCH v3 5/8] iommu/amd: Add support for device id user input Dheeraj Kumar Srivastava
2025-03-13 10:52   ` Vasant Hegde
2025-03-17 11:25     ` Dheeraj Kumar Srivastava
2025-02-06  6:00 ` [PATCH v3 6/8] iommu/amd: Add debugfs support to dump device table Dheeraj Kumar Srivastava
2025-02-06  6:00 ` [PATCH v3 7/8] iommu/amd: Add debugfs support to dump IRT Table Dheeraj Kumar Srivastava
2025-03-13 11:03   ` Vasant Hegde
2025-03-17 11:26     ` Dheeraj Kumar Srivastava
2025-02-06  6:00 ` [PATCH v3 8/8] iommu/amd: Add documentation for AMD IOMMU debugfs support Dheeraj Kumar Srivastava
2025-02-06  8:56 ` [PATCH v3 0/8] Introduce debugfs support in IOMMU Suthikulpanit, Suravee
2025-03-07  8:17 ` Dheeraj Kumar Srivastava

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