On Mon, Oct 21, 2024 at 01:48:48PM -0700, Yuanchu Xie wrote: > +static DEFINE_RWLOCK(pvmemcontrol_lock); What does this lock control? > +static struct pvmemcontrol *pvmemcontrol __read_mostly; Having a single static device should not be needed, please tie this properly to the pci device that the driver core gives you. With this design, you have limited yourself to a fixed number of devices in the system at once (i.e. 1). This isn't the 1990's anymore, drivers should be able to handle any number of devices at once. thanks, greg k-h
