Re: [PATCH v2 02/22] PCI: Add API to track PCI devices preserved across Live Update

Jason Gunthorpe
2026-03-01T19:29:37Z

On Fri, Feb 27, 2026 at 11:25:01AM -0700, Alex Williamson wrote:

> There's obviously a knee jerk reaction that moving PF drivers into
> userspace is a means to circumvent the GPL that was evident at LPC,
> even if the real reason is "in-kernel is hard".

Given we already have GPL licensed kernel drivers for the PFs it
doesn't seem like a reasonable worry to me to fret about some cut down
version of a kernel driver running in userspace.

Further, let's be honest here, the people most interested in all of
this are doing it to support their proprietary VMMs. I'm pushing that
we must have at least a reference implementation in qemu before the
kernel parts should be merged..

Jason