From: Vasant Hegde <vasant.hegde@amd.com>
To: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>,
joro@8bytes.org, will@kernel.org, robin.murphy@arm.com,
iommu@lists.linux.dev, linux-kernel@vger.kernel.org
Cc: suravee.suthikulpanit@amd.com, Santosh.Shukla@amd.com,
Ankit Soni <Ankit.Soni@amd.com>
Subject: Re: [PATCH v5] iommu/amd: Enhance "Completion-wait Time-out" error message
Date: Thu, 13 Nov 2025 17:04:31 +0530 [thread overview]
Message-ID: <7433bd8e-4e09-420f-8708-3c148aca45e9@amd.com> (raw)
In-Reply-To: <20251112211350.894-1-dheerajkumar.srivastava@amd.com>
On 11/13/2025 2:43 AM, Dheeraj Kumar Srivastava wrote:
> Current IOMMU driver prints "Completion-wait Time-out" error message with
> insufficient information to further debug the issue.
>
> Enhancing the error message as following:
> 1. Log IOMMU PCI device ID in the error message.
> 2. With "amd_iommu_dump=1" kernel command line option, dump entire
> command buffer entries including Head and Tail offset.
>
> Dump the entire command buffer only on the first 'Completion-wait Time-out'
> to avoid dmesg spam.
>
> Signed-off-by: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>
> Reviewed-by: Ankit Soni <Ankit.Soni@amd.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
-Vasant
next prev parent reply other threads:[~2025-11-13 11:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-12 21:13 Dheeraj Kumar Srivastava
2025-11-13 11:34 ` Vasant Hegde [this message]
2025-11-13 15:13 ` Jörg Rödel
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