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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2023-08-02 16:13:37 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-24 16:20:20 -0700 |
| commit | 8b5989f3333717273d02ab87ba8781f72a6783ab (patch) | |
| tree | 86a18cbb7b5e7a2ab7f02fcd42ffae0fcb9fc861 /arch/arm/mm/fault-armv.c | |
| parent | ac4cfaccedac891d29560ddfb64cb5c1e710e1e1 (diff) | |
| download | linux-8b5989f3333717273d02ab87ba8781f72a6783ab.tar.gz linux-8b5989f3333717273d02ab87ba8781f72a6783ab.tar.bz2 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 'arch/arm/mm/fault-armv.c')
| -rw-r--r-- | arch/arm/mm/fault-armv.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c index 7cb125497976..2286c2ea60ec 100644 --- a/arch/arm/mm/fault-armv.c +++ b/arch/arm/mm/fault-armv.c @@ -180,12 +180,12 @@ make_coherent(struct address_space *mapping, struct vm_area_struct *vma, * * Note that the pte lock will be held. */ -void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr, - pte_t *ptep) +void update_mmu_cache_range(struct vm_fault *vmf, struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep, unsigned int nr) { unsigned long pfn = pte_pfn(*ptep); struct address_space *mapping; - struct page *page; + struct folio *folio; if (!pfn_valid(pfn)) return; @@ -194,13 +194,13 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr, * The zero page is never written to, so never has any dirty * cache lines, and therefore never needs to be flushed. */ - page = pfn_to_page(pfn); - if (page == ZERO_PAGE(0)) + if (is_zero_pfn(pfn)) return; - mapping = page_mapping_file(page); - if (!test_and_set_bit(PG_dcache_clean, &page->flags)) - __flush_dcache_page(mapping, page); + folio = page_folio(pfn_to_page(pfn)); + mapping = folio_flush_mapping(folio); + if (!test_and_set_bit(PG_dcache_clean, &folio->flags)) + __flush_dcache_folio(mapping, folio); if (mapping) { if (cache_is_vivt()) make_coherent(mapping, vma, addr, ptep, pfn); |