RE: [PATCH v2] storvsc: Set up correct queue depth values for IDE devices

[Long Li]

> Subject: Re: [PATCH v2] storvsc: Set up correct queue depth values for IDE
> devices
> 
> 
> Long,
> 
> > Can you take a look at the following patch?
> 
> >> > + max_sub_channels =
> >> > + 		(num_cpus - 1) / storvsc_vcpus_per_sub_channel;
> 
> What happens if num_cpus = 1?

If num_cpus=1, we don't have any sub channels.

The host offers one sub channel for VM with 5 CPUs, after that it offers an additional sub channel every 4 CPUs.

The primary channel is always offered.

> 
> --
> Martin K. Petersen	Oracle Linux Engineering