Re: [PATCH v2] mpt3sas: Added support for shared host tagset for cpuhotplug

[John Garry <john.garry@xxxxxxxxxx>]

On 02/02/2021 09:58, Sreekanth Reddy wrote:
> d transport support for SAS 3.0 HBA devices */
> @@ -12028,6 +12053,21 @@ _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id)
>   	} else
>   		ioc->hide_drives = 0;
>   
> +	shost->host_tagset = 0;
> +	shost->nr_hw_queues = 1;
> +
> +	if (ioc->is_gen35_ioc && ioc->reply_queue_count > 1 &&
> +	    host_tagset_enable && ioc->smp_affinity_enable) {
> +

I wanted to test host_tagset_enable feature on my LSI 3008 card (I think 
that it uses MP25 version), but is_gen35_ioc is not set there - is there 
some specific reason for which we can't support on that HW rev?

> +		shost->host_tagset = 1;
> +		shost->nr_hw_queues =
> +		    ioc->reply_queue_count - ioc->high_iops_queues;
> +
> +		dev_info(&ioc->pdev->dev,
> +		    "Max SCSIIO MPT commands: %d shared with nr_hw_queues = %d\n",
> +		    shost->can_queue, shost->nr_hw_queues);
> +	}

Thanks,
John