linux-kernel - Re: [PATCH 1/2] iommu/amd - Update the PASID information printed to the system log

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Message-ID: <526f3331-610f-9556-1d6d-f595d689b6de@amd.com>
Date:   Thu, 3 May 2018 13:09:18 -0500
From:   Gary R Hook <ghook@....com>
To:     Joerg Roedel <joro@...tes.org>, Gary R Hook <gary.hook@....com>
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] iommu/amd - Update the PASID information printed to
 the system log

On 05/03/2018 08:57 AM, Joerg Roedel wrote:
> On Tue, May 01, 2018 at 02:52:52PM -0500, Gary R Hook wrote:
>> @@ -567,7 +567,7 @@ static void iommu_print_event(struct amd_iommu *iommu, void *__evt)
>>   	}
>>   
>>   	if (type == EVENT_TYPE_IO_FAULT) {
>> -		amd_iommu_report_page_fault(devid, domid, address, flags);
>> +		amd_iommu_report_page_fault(devid, pasid, address, flags);
> 
> According to the spec this could be a domid or a pasid, it would be good
> to make that visible in the error message, depending on the value of the
> GN flag in the event entry.
> 
> But that can be done in a separate patch, I applied these two, thanks.


Yes, I didn't quite get this right. Both values should be passed along. 
Or perhaps the entire event could be passed in and decoded by 
amd_iommu_report_page_fault()?