On Thu, Mar 29, 2018 at 02:59:11PM +0300, Mika Westerberg wrote: > On Wed, Mar 28, 2018 at 01:09:06PM -0500, Bjorn Helgaas wrote: > > The same issue could happen on any system where we use acpiphp, so I > > don't think Thunderbolt is really relevant here, and it's easy to > > confuse things by mentioning it. > > This issue can happen regardless whether acpiphp is used or not. If the platform has yielded hotplug control to the OS via _OSC, I don't see how the platform could hot-add devices. So surely reserving a bus number for a bridge without anything below it can be constrained to the !pciehp_is_native(bridge) case? Thanks, Lukas
