diff options
| author | Christoph Hellwig <hch@lst.de> | 2021-04-29 22:57:32 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-30 11:20:39 -0700 |
| commit | 1fbaf8fc12a0136c7e62e7ad6fe886fe1749912c (patch) | |
| tree | 272f224698d871cd2ff65a5fc1fefb02de87fbcc /mm/Kconfig | |
| parent | 74ffa5a3e68504dd289135b1cf0422c19ffb3f2e (diff) | |
| download | linux-1fbaf8fc12a0136c7e62e7ad6fe886fe1749912c.tar.gz | |
mm: add a io_mapping_map_user helper
Add a helper that calls remap_pfn_range for an struct io_mapping, relying
on the pgprot pre-validation done when creating the mapping instead of
doing it at runtime.
Link: https://lkml.kernel.org/r/20210326055505.1424432-3-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index d0808a23e54bc..8a27c7c914280 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -871,4 +871,7 @@ config MAPPING_DIRTY_HELPERS config KMAP_LOCAL bool +# struct io_mapping based helper. Selected by drivers that need them +config IO_MAPPING + bool endmenu |