Re: [PATCH v3 05/15] PCI/AER: Add CXL PCIe port correctable error support in AER service driver

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

On 11/15/2024 8:49 AM, Li Ming wrote:
>
> On 2024/11/15 2:41, Bowman, Terry wrote:
>> Hi Lukas,
>>
>> I added comments below.
>>
>> On 11/14/2024 10:44 AM, Lukas Wunner wrote:
>>> On Wed, Nov 13, 2024 at 03:54:19PM -0600, Terry Bowman wrote:
>>>> @@ -1115,8 +1131,11 @@ static void pci_aer_handle_error(struct pci_dev *dev, struct aer_err_info *info)
>>>>   
>>>>   static void handle_error_source(struct pci_dev *dev, struct aer_err_info *info)
>>>>   {
>>>> -	cxl_handle_error(dev, info);
>>>> -	pci_aer_handle_error(dev, info);
>>>> +	if (is_internal_error(info) && handles_cxl_errors(dev))
>>>> +		cxl_handle_error(dev, info);
>>>> +	else
>>>> +		pci_aer_handle_error(dev, info);
>>>> +
>>>>   	pci_dev_put(dev);
>>>>   }
>>> If you just do this at the top of cxl_handle_error()...
>>>
>>> 	if (!is_internal_error(info))
>>> 		return;
>>>
>>> ...you avoid the need to move is_internal_error() around and the
>>> patch becomes simpler and easier to review.
>> If is_internal_error()==0, then pci_aer_handle_error() should be called to process the PCIe error. Your suggestion would require returning a value from cxl_handle_error(). And then more "if" logic would be required for the cxl_handle_error() return value. Should both is_internal_error() and handles_cxl_errors()be moved into cxl_handle_error()? Would give this:
>>
>>   static void handle_error_source(struct pci_dev *dev, struct aer_err_info *info)
>>   {
>> -	cxl_handle_error(dev, info);
>> -	pci_aer_handle_error(dev, info);
>> +	if (!cxl_handle_error(dev, info))
>> +		pci_aer_handle_error(dev, info);
>> +
>>   	pci_dev_put(dev);
>>   }
>>

We could do that. And with that change it might need handles_cxl_errors() renamed
to something more correct, like handle_cxl_error()?

Regards,
Terry