On 2026-09-10 06:51 PM, Bjorn Helgaas wrote: > > diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c > > index 77b17b13ee61..22001bdf4c97 100644 > > --- a/drivers/pci/pci.c > > +++ b/drivers/pci/pci.c > > @@ -34,6 +34,8 @@ > > #include <linux/aer.h> > > #include <linux/bitfield.h> > > #include <linux/suspend.h> > > + > > +#include "liveupdate.h" > > #include "pci.h" > > > > DEFINE_MUTEX(pci_slot_mutex); > > @@ -1008,6 +1010,9 @@ void pci_enable_acs(struct pci_dev *dev) > > bool enable_acs = false; > > int pos; > > > > + if (!pci_liveupdate_enable_adopted_acs_controls(dev)) > > + return; > > Ugh. The asymmetry between pci_save_state(), which does nothing > ACS-related, and pci_restore_state(), which enables it, is sort of > sketchy to begin with. > > The command-line parsing in this path feels like kind of a wart (not > that you're touching it). > > It just seems like this path is already hard to analyze, and > liveupdate is making it harder. > > If we could save/restore the ACS state around the reset, wouldn't that > solve this without any liveupdate specials here?
Yeah that would simplify the liveupdate support greatly. Let me work on that for v9.
