On Tue, 2019-06-25 at 15:04 +0300, Mika Westerberg wrote: > > What's your experience in that area ? How (well) do they handle it in > > the boot firmware ? at least on arm64, boot firmwares are rather > > catastrophic when it comes to PCI, and on other embedded devices they > > are basically non-existent. > > Well my experience is quite limited to recent Macs and PCs which usually > handle the initial resource allocation just fine. In case of Thunderbolt > some "older" PCs handle everything in firmware, even the runtime > resource allocation via SMI handler accompanied with ACPI hotplug. Ah so this is what Lenovo calls "Thunderbolt firmware assist" in the BIOS ? I turned that on, it did help with Linux :) Cheers, Ben.
