Messages in this thread | | | From | Bjorn Helgaas <> | Subject | [PATCH] Revert "PCI/LINK: Report degraded links via link bandwidth | Date | Mon, 29 Apr 2019 13:56:10 -0500 |
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Alex W. reported a case where the new link bandwidth notification logging, e.g.:
vfio-pci 0000:07:00.0: 32.000 Gb/s available PCIe bandwidth, limited by 2.5 GT/s x16 link at 0000:00:02.0 (capable of 64.000 Gb/s with 5 GT/s x16 link)
is somewhat surprising. The message is great if link bandwidth was reduced because of a hardware problem, but in this case it's caused by a GPU doing link state management to conserve power, so the message is to be expected and is likely to confuse the user.
We haven't figured out a good way to handle both the "hardware failure" and the "active link management" cases yet, so revert this for now.
Bjorn
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