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The vfio_ccw_cp code maintains both iova and its PFN list because the vfio_pin/unpin_pages API wanted pfn list. Since vfio_pin/unpin_pages() now accept "iova", change to maintain only pa_iova list and rename all "pfn_array" strings to "page_array", so as to simplify the code. Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Eric Farman <farman@linux.ibm.com> Tested-by: Eric Farman <farman@linux.ibm.com> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com> Link: https://lore.kernel.org/r/20220723020256.30081-8-nicolinc@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>