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: <Z6NqlD2Je5xVtFui@Red>
Date: Wed, 5 Feb 2025 14:41:40 +0100
From: Corentin Labbe <clabbe.montjoie@...il.com>
To: Vasant Hegde <vasant.hegde@....com>
Cc: joro@...tes.org, suravee.suthikulpanit@....com, will@...nel.org,
	robin.murphy@....com, iommu@...ts.linux.dev,
	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]

Le Wed, Feb 05, 2025 at 05:33:50PM +0530, Vasant Hegde a écrit :
> 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
> 

Hello

How to double check firmware region ?

For other questions, I just sent an email to Robin with all answers.

Thanks
Regards