On Fri, Mar 01, 2019 at 08:17:27AM +0100, Greg KH wrote:

On Thu, Feb 28, 2019 at 11:37:45PM -0600, Parav Pandit wrote:

quoted

Introduce a new subdev bus which holds sub devices created from a
primary device. These devices are named as 'subdev'.
A subdev is identified similarly to pci device using 16-bit vendor id
and device id.
Unlike PCI devices, scope of subdev is limited to Linux kernel.

But these are limited to only PCI devices, right?

This sounds a lot like that ARM proposal a week or so ago that asked for
something like this, are you working with them to make sure your
proposal works for them as well?  (sorry, can't find where that was
announced, it was online somewhere...)

Thanks for pointing this out and sorry for the delay in chiming in.

Blog post and white paper are available here:

https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/high-performance-device-virtualization-approach-to-standardization

It would be certainly good to reach a degree of convergence in this
design space, which eventually will be beneficial for the kernel
interfaces required.

Thanks again for pointing this out.

Lorenzo