linux-kernel - Re: iommu: flood of ahci 0000:e6:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0055 address=0xa14a4000 flags=0x0070]

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Message-ID: <0e4c38a8-3f7c-4cbe-9dd0-9e73d4d947e0@amd.com>
Date: Wed, 5 Feb 2025 17:33:50 +0530
From: Vasant Hegde <vasant.hegde@....com>
To: Corentin Labbe <clabbe.montjoie@...il.com>, joro@...tes.org,
 suravee.suthikulpanit@....com, will@...nel.org, robin.murphy@....com,
 iommu@...ts.linux.dev
Cc: linux-kernel@...r.kernel.org
Subject: Re: iommu: flood of ahci 0000:e6:00.0: AMD-Vi: Event logged
 [IO_PAGE_FAULT domain=0x0055 address=0xa14a4000 flags=0x0070]

Hi,

On 2/3/2025 2:35 PM, Corentin Labbe wrote:
> Hello
> 
> I have a supermicro server which is flooded of kernel message:
> ahci 0000:e6:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0055 address=0xa14a4000 flags=0x0070]

0x70 means, Page was present, its write request, but device doesn't have
required permission.

As Robin mentioned, it could be FW region. Can you please double check?

Also what is the failure scenario? You see as soon as you boot or after running
some tests? Can you provide dmesg?

-Vasant