Re: [PATCH v3 11/18] dmaengine: idxd: ims setup for the vdcm

[Raj, Ashok]

On Fri, Oct 09, 2020 at 08:57:37AM -0300, Jason Gunthorpe wrote:
> On Thu, Oct 08, 2020 at 06:22:31PM -0700, Raj, Ashok wrote:
> 
> > Not randomly put there Jason :-).. There is a good reason for it. 
> 
> Sure the PASID value being associated with the IRQ make sense, but
> combining that register with the interrupt mask is just a compltely
> random thing to do.

Hummm... Not sure what you are complaining.. but in any case giving
hardware a more efficient way to store interrupt entries breaking any
boundaries that maybe implied by the spec is why IMS was defined.

> 
> If this HW was using MSI-X PASID would have been given its own
> register.

Well there is no MSI-X PASID is there?