Re: Issues with "PCI/LINK: Report degraded links via link bandwidth notification"

Christoph Hellwig
2020-01-30T16:26:12Z

On Sun, Jan 19, 2020 at 08:33:26PM -0600, Bjorn Helgaas wrote:
> NVMe, GPU folks, do your drivers or devices change PCIe link
> speed/width for power saving or other reasons? When CONFIG_PCIE_BW=y,
> the PCI core interprets changes like that as problems that need to be
> reported.

The NVMe driver doesn't. For devices I don't know of any, but Ican't
find anything in the spec that would forbid it.