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| author | Christoph Hellwig <hch@lst.de> | 2024-10-23 07:36:37 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2024-10-28 22:44:28 +0100 |
| commit | 3e25d5a49f99b75be2c6cfb165e4f77dc6d739a2 (patch) | |
| tree | 37b3f986f6be011bcc7d5ec4442e593a331cac74 /lib | |
| parent | asm-generic: provide generic page_to_phys and phys_to_page implementations (diff) | |
| download | linux-3e25d5a49f99b75be2c6cfb165e4f77dc6d739a2.tar.xz linux-3e25d5a49f99b75be2c6cfb165e4f77dc6d739a2.zip | |
asm-generic: add an optional pfn_valid check to page_to_phys
page_to_pfn is usually implemented by pointer arithmetics on the memory
map, which means that bogus input can lead to even more bogus output.
Powerpc had a pfn_valid check on the intermediate pfn in the page_to_phys
implementation when CONFIG_DEBUG_VIRTUAL is defined, which seems
generally useful, so add that to the generic version.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions