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SubjectRe: [RFC net-next 1/8] subdev: Introducing subdev bus
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:
> > 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

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