On Wed, Aug 06, 2025 at 04:34:09PM -0500, Bjorn Helgaas wrote: > > > However, the current 4 seconds timeout in pci_dpc_recovered() is indeed > > > an empirical value rather than a hard requirement from the PCIe > > > specification. In real-world scenarios, like with Mellanox ConnectX-5/7 > > > adapters, we've observed that full DPC recovery can take more than 5-6 > > > seconds, which leads to premature hotplug processing and device removal. > > > > I think Sathya's point was: Have you made an effort to talk to the > > vendor and ask them to root-cause and fix the issue e.g. with a firmware > > update. > > Would definitely be great, but unless we have a number in the spec to > point to, they might just shrug and ask what the requirement is. I agree, and I have similar problems with other arbitrary kernel timing decicsions. Specifically RRL where there's no spec defined number yet my patch to modify it has not received much consideration. https://lore.kernel.org/linux-pci/20250218165444.2406119-1-kbusch@xxxxxxxx/
