netdev - Re: [PATCH] mlx4: Add support for EEH error recovery

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Message-ID: <500EDCF7.3010500@linux.vnet.ibm.com>
Date:	Tue, 24 Jul 2012 14:35:51 -0300
From:	Kleber Sacilotto de Souza <klebers@...ux.vnet.ibm.com>
To:	Shlomo Pongartz <shlomop@...lanox.com>
CC:	Or Gerlitz <or.gerlitz@...il.com>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	jackm@....mellanox.co.il, yevgenyp@...lanox.co.il,
	cascardo@...ux.vnet.ibm.com, brking@...ux.vnet.ibm.com
Subject: Re: [PATCH] mlx4: Add support for EEH error recovery

On 07/24/2012 02:09 PM, Shlomo Pongartz wrote:

> On 7/24/2012 4:12 PM, Kleber Sacilotto de Souza wrote:
>> On 07/23/2012 06:26 PM, Or Gerlitz wrote:
>>
>>> Kleber Sacilotto de Souza <klebers@...ux.vnet.ibm.com> wrote:
>>>>> For powerpc we have an IBM internal user space tool that injects the
>>>>> error on the bus with the aid of the system firmware. The kernel used
>>>>> was built with the option:
>>>>> CONFIG_EEH=y
>>>>> and without the AER options. I will run some more tests with the AER
>>>>> options activated.
>>>> I tested the powerpc error injection with
>>>>
>>>> CONFIG_EEH=y
>>>> CONFIG_PCIEAER=y
>>>> CONFIG_PCIEAER_INJECT=m
>>>>
>>>> and with the aer_inject module loaded and it didn't affect the EEH
>>>> recovery, the adapter recovered as expected.
>>> I wasn't sure to follow what did you mean by "it didn't affect the EEH
>>> recovery", how did you use the aer_inject module, is that through
>>> user-space tool which is available for us?
>>
>> I wanted to say that I was testing before only with the EEH option
>> activated, then I activated the AER options on my powerpc system just to
>> make sure these options when activate wouldn't affect the EEH recovery.
>> I haven't injected and AER error since I don't have a system with
>> hardware support for it.
>>
>>
>> Thanks,
> 
> Hi
> 
> Using a special extender card I've powered down the card.
> None of the callbacks were called (I added printks to be sure).
> Shouldn't one on the callbacks be called?
> 
> Shlomo Pongratz.
> 


What does this extender card do exactly? If it does hot plugging, it
will call the remove and probe callbacks.


-- 
Kleber Sacilotto de Souza
IBM Linux Technology Center

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