Re: [PATCH v2 06/14] nvme: Rapid Path Failure Recovery read controller identify fields

Hannes Reinecke
2026-02-03T03:28:54Z

On 1/30/26 23:34, Mohamed Khalfella wrote:
> TP8028 Rapid path failure added new fileds to controller identify
> response. Read CIU (Controller Instance Uniquifier), CIRN (Controller
> Instance Random Number), and CCRL (Cross-Controller Reset Limit) from
> controller identify response. Expose CIU and CIRN as sysfs attributes
> so the values can be used directrly by user if needed.
>
> TP4129 KATO Corrections and Clarifications defined CQT (Command Quiesce
> Time) which is used along with KATO (Keep Alive Timeout) to set an upper
> limit for attempting Cross-Controller Recovery.
>
> Signed-off-by: Mohamed Khalfella <mkhalfella@purestorage.com>
> ---
> drivers/nvme/host/core.c | 5 +++++
> drivers/nvme/host/nvme.h | 11 +++++++++++
> drivers/nvme/host/sysfs.c | 23 +++++++++++++++++++++++
> 3 files changed, 39 insertions(+)
>
Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
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