[PATCH] nvme: Use non zero KATO for persistent discovery connections

[Hannes Reinecke]

On 9/2/25 05:52, alistair23 at gmail.com wrote:
> From: Alistair Francis <alistair.francis at wdc.com>
> 
> The NVMe Base Specification 2.1 states that:
> 
> """
> A host requests an explicit persistent connection ... by specifying a
> non-zero Keep Alive Timer value in the Connect command.
> """
> 
> As such if we are starting a persistent connection to a discovery
> controller and the KATO is currently 0 we need to update KATO to a non
> zero value to avoid continuous timeouts on the target.
> 
> Signed-off-by: Alistair Francis <alistair.francis at wdc.com>
> ---
>   drivers/nvme/host/core.c | 8 +++++++-
>   1 file changed, 7 insertions(+), 1 deletion(-)
> 
Reviewed-by: Hannes Reinecke <hare at suse.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                  Kernel Storage Architect
hare at suse.de                                +49 911 74053 688
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