[PATCH v1 2/3] powerpc/powernv: Support PCI error injection

Mike Qiu qiudayu at linux.vnet.ibm.com
Tue Jul 22 13:10:42 EST 2014

On 07/22/2014 06:49 AM, Benjamin Herrenschmidt wrote:
> On Mon, 2014-07-21 at 16:06 +0800, Mike Qiu wrote:
>>> I don't like this. I much prefer have dedicated error injection files
>>> in their respective locations, something for PCI under the corresponding
>>> PCI bridge etc...
>> So PowerNV error injection will be designed rely on debugfs been
>> configured, right?
> Not necessarily. If we create a better debugfs layout for our PHBs, then
> yes. It might be useful to provide more info in there for example access
> to some of the counters ...
> But on the other hand, for error injection in general, I wonder if we should
> be under sysfs instead... something to study a bit.

In pHyp, general error injection use syscall:

     #define __NR_rtas        255

I don't know if it is a good idea to reuse this syscall for PowerNV.

At least, it is another choice without sysfs rely.


> Cheers,
> Ben.

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