Re: [PATCH v2 05/14] PCI/AER: Add CXL PCIe port correctable error support in AER service driver

["Bowman, Terry" <terry.bowman@amd.com>]

On 11/4/2024 3:50 PM, Dan Williams wrote:
> Jonathan Cameron wrote:
>> On Fri, 25 Oct 2024 16:02:56 -0500
>> Terry Bowman <terry.bowman@amd.com> wrote:
> [..]
>> Anyhow, I think it is fine but I would call out that this changes
>> things so that the PCI error handlers are no longer called for CXL ports
>> if it's an internal error.
>>
>> With a sentence on that:
>>
>> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
>>
>> I'm not 100% convinced the path of separate handlers is the way to go
>> but we can always change things again if that doesn't work out.
> Hmm, if that part is not clear there should at least be more
> documentation as to the "why". For me it is the fact that CXL
> potentially promotes endpoint errors to region scope recovery actions,
> and that PCIe native AER has no concept of AER triggering unrecoverable
> system fatal reponse.
>
> To date panic on AER error has only been logic that ACPI APEI can
> deploy, and the kernel has no chance to evaluate the error. So, CXL
> error handlers is a reflection that these errors are outside of the PCIe
> AER error model.
Hi Dan,

I'll elaborate more and touch on what you mentioned.

Regards,
Terry