Re: [RFC PATCH 2/3] vfio/ims: Support emulated interrupts

[Reinette Chatre <reinette.chatre@intel.com>]

On 8/25/2023 9:59 AM, Jason Gunthorpe wrote:
> On Fri, Aug 25, 2023 at 09:55:52AM -0700, Reinette Chatre wrote:
> 
>> Thank you very much for your guidance. Instead of Jason's expectation that
>> IMS would be a backend of MSI-X this will change to IMS and MSI-X both being
>> a backend to a new interface. It is difficult for me to envision the end
>> result so I will work on an implementation based on my understanding of
>> your proposal that we can use for further discussion.
> 
> I think the point is that emulating MSI-X is kind of tricky and should
> be common VFIO code, regardless of what path it takes.
> 
> So I would expect some library code to do this, entry points the
> vfio_device can hook into its callbacks (eg config space and rw of a
> page)
> 
> Then the other side would connect to the physical implementation,
> sw,ims,msi-x,future
> 

Thank you very much Jason. I am thus hearing the same from you and
Kevin. I'll work on this.

Reinette