[PATCH v4 1/1] nvme: handle persistent internal error AER from NVMe controller

[Chaitanya Kulkarni]

On 6/8/22 11:52, Michael Kelley wrote:
> In the NVM Express Revision 1.4 spec, Figure 145 describes possible
> values for an AER with event type "Error" (value 000b). For a
> Persistent Internal Error (value 03h), the host should perform a
> controller reset.
> 
> Add support for this error using code that already exists for
> doing a controller reset. As part of this support, introduce
> two utility functions for parsing the AER type and subtype.
> 
> This new support was tested in a lab environment where we can
> generate the persistent internal error on demand, and observe
> both the Linux side and NVMe controller side to see that the
> controller reset has been done.
> 
> Signed-off-by: Michael Kelley <mikelley at microsoft.com>
> ---


Looks good. Thanks a lot for testing this, perhaps consider
writing the testcase for it in  the blktests under nvme
category, that way it will get tested by everyone else.

Reviewed-by: Chaitanya Kulkarni <kch at nvidia.com>

-ck