diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2023-08-02 17:13:37 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-25 01:20:20 +0200 |
| commit | 8b5989f3333717273d02ab87ba8781f72a6783ab (patch) | |
| tree | 86a18cbb7b5e7a2ab7f02fcd42ffae0fcb9fc861 /arch/arm/mm/nommu.c | |
| parent | arc: implement the new page table range API (diff) | |
| download | linux-8b5989f3333717273d02ab87ba8781f72a6783ab.tar.xz linux-8b5989f3333717273d02ab87ba8781f72a6783ab.zip | |
arm: implement the new page table range API
Add set_ptes(), update_mmu_cache_range(), flush_dcache_folio() and
flush_icache_pages(). Change the PG_dcache_clear flag from being per-page
to per-folio which makes __dma_page_dev_to_cpu() a bit more exciting.
Also add flush_cache_pages(), even though this isn't used by generic code
(yet?)
[m.szyprowski@samsung.com: fix potential endless loop in __dma_page_dev_to_cpu()]
Link: https://lkml.kernel.org/r/20230809172737.3574190-1-m.szyprowski@samsung.com
[willy@infradead.org: fix folio conversion in __dma_page_dev_to_cpu()]
Link: https://lkml.kernel.org/r/20230823191852.1556561-1-willy@infradead.org
Link: https://lkml.kernel.org/r/20230802151406.3735276-10-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | arch/arm/mm/nommu.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c index 43cfd06bbeba..c415f3859b20 100644 --- a/arch/arm/mm/nommu.c +++ b/arch/arm/mm/nommu.c @@ -180,6 +180,12 @@ void setup_mm_for_reboot(void) { } +void flush_dcache_folio(struct folio *folio) +{ + __cpuc_flush_dcache_area(folio_address(folio), folio_size(folio)); +} +EXPORT_SYMBOL(flush_dcache_folio); + void flush_dcache_page(struct page *page) { __cpuc_flush_dcache_area(page_address(page), PAGE_SIZE); |