Looking for review / testing for nvme suspend / resume support

[Yuri Pankov]

Warner Losh wrote:
> I've posted a review: https://reviews.freebsd.org/D21493 for NVMe suspend /
> resume support. This avoids issues where we come out of suspend and need to
> wait 30s for there to be a timeout and a reset of the device. It does so by
> completely shutting down the card before we suspend, and then assume it was
> in an unknown state when we come back up.
> 
> Please leave comments about successful (or unsuccessful) tests and/or ways
> to improve the code.

Not seeing any issues with "SAMSUNG MZVLB512HAJQ", both suspend/resume
were almost instant, no messages from nvme/nvd logged, no errors from
zpool status/scrub.