The struct s390_domain_device serves the sole purpose as list entry for
the devices list of a struct s390_domain. As it contains no additional
information besides a list_head and a pointer to the struct zpci_dev we
can simplify things and just thread the device list through struct
zpci_dev directly. This removes the need to allocate during domain
attach and gets rid of one level of indirection during mapping
operations.
Reviewed-by: NMatthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: NJason Gunthorpe <jgg@nvidia.com>
Signed-off-by: NNiklas Schnelle <schnelle@linux.ibm.com>
Link: https://lore.kernel.org/r/20221025115657.1666860-3-schnelle@linux.ibm.comSigned-off-by: NJoerg Roedel <jroedel@suse.de>