https://bugzilla.kernel.org/show_bug.cgi?id=218876 Alex Williamson (alex.williamson@xxxxxxxxxx) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |alex.williamson@xxxxxxxxxx --- Comment #9 from Alex Williamson (alex.williamson@xxxxxxxxxx) --- (In reply to TJ from comment #2) > This could be a power management issue: > > vfio-pci 0000:02:00.0: Unable to change power state from D3cold to D0, > device inaccessible I wouldn't rule out a power management issue, but I think the device has already disappeared by the time we're seeing these error logs. We're hitting the timeouts waiting for the device after bus reset and we trigger quirks that are trying to retrain the link at a reduced rate. Unfortunately this device only supports bus reset. Is it possible to test assigning another single function device installed in this slot? We'd want to make sure that the reset_method is still "bus", which can be selected via the same sysfs file if the other device supports more reset mechanism. If it is a power management issue, we can also restrict vfio-pci use of power management by passing the disable_idle_d3=1 module option when loading the vfio-pci driver. If that works, we might want to quirk the ID for this old NEC controller to avoid D3 states. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
