Hey, On 31/03/17 08:17 PM, okaya@xxxxxxxxxxxxxx wrote: > See drivers/pci and drivers/acpi directory. The best I could find was the date of the firmware/bios. I really don't think that makes sense to tie the two together. And really the more that I think about it trying to do a date cutoff for this seems crazy without very comprehensive hardware testing done. I have no idea which AMD chips have decent root ports for this and then if we include all of ARM and POWERPC, etc there's a huge amount of unknown hardware. Saying that the system's firmware has to be written after 2016 seems like an arbitrary restriction that isn't likely to correlate to any working systems. I still say the only sane thing to do is allow all switches and then add a whitelist of root ports that are known to work well. If we care about preventing broken systems in a comprehensive way then that's the only thing that is going to work. Logan
