On Tue, Jul 15, 2025 at 03:57:12PM +0530, Manivannan Sadhasivam wrote: > On Tue, Jul 15, 2025 at 11:33:16AM GMT, Johan Hovold wrote: > > On Tue, Jul 15, 2025 at 02:41:23PM +0530, Manivannan Sadhasivam wrote: > > > On Tue, Jul 15, 2025 at 09:48:30AM GMT, Johan Hovold wrote: > > > > A problem with this approach is that ASPM will never be enabled (and > > > > power consumption will be higher) in case an endpoint driver is missing. > > > > > > I'm aware of this limiation. But I don't think we should really worry about that > > > scenario. No one is going to run an OS intentionally with a PCI device and > > > without the relevant driver. If that happens, it might be due to some issue in > > > driver loading or the user is doing it intentionally. Such scenarios are short > > > lived IMO. > > > > There may not even be a driver (yet). A user could plug in whatever > > device in a free slot. I can also imagine someone wanting to blacklist > > a driver temporarily for whatever reason. > > Yes, that's why I said these scenarios are 'shortlived'. My point is the opposite; that you should not make such assumptions (e.g. hardware not supported by linux or drivers disabled due to stability or security concerns). Johan
