On Fri, Nov 21, 2025 at 1:59 AM <[email protected]> wrote: > > Michal Clapinski wrote: > > Comments in linux/device/driver.h say that the goal is to do async > > probing on all devices. The current behavior unnecessarily slows down > > the boot by synchronously probing dax devices, so let's change that. > > > > For thousands of devices, this change saves >1s of boot time. > > > > Michal Clapinski (5): > > dax: add PROBE_PREFER_ASYNCHRONOUS to the pmem driver > > dax: add PROBE_PREFER_ASYNCHRONOUS to the kmem driver > > dax: add PROBE_PREFER_ASYNCHRONOUS to the cxl driver > > dax: add PROBE_PREFER_ASYNCHRONOUS to the hmem drivers > > dax: add PROBE_PREFER_ASYNCHRONOUS to the dax device driver > > After seeing the trouble this causes with libdaxctl and failing to find > a quick fix I wonder if you should just go through route of eating the > potential regressions in your own environment. > > I.e. instead of making it a problem that the kernel needs to debug for > all legacy users, how about you just boot with the command line option: > > driver_async_probe=device_dax > > ...or add the following to your mopdrobe configuration: > > options device_dax async_probe > > I.e. do you really need to change this policy globally for everyone at > this point?
I'll do that or I'll just cherry-pick this to our kernel. Thank you. > I do want to improve this, but I think it will take time for libdaxctl > to get ready for this flag day.
