page_to_phys is duplicated by all architectures, and from some strange
reason placed in <asm/io.h> where it doesn't fit at all.
phys_to_page is only provided by a few architectures despite having a lot
of open coded users.
Provide generic versions in <asm-generic/memory_model.h> to make these
helpers more easily usable.
Note with this patch powerpc loses the CONFIG_DEBUG_VIRTUAL pfn_valid
check. It will be added back in a generic version later.
Bug: 399192075
Change-Id: I6cdc866833e43a21e6fbabefb686797dd57d9e13
Signed-off-by: Sandeep Dhavale <dhavale@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
(cherry picked from commit c5c3238d9b8cee58cd4b08bbbe9347a94a566390)
Signed-off-by: Sandeep Dhavale <dhavale@google.com>
c2707bda56