diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2023-08-02 16:13:47 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-24 16:20:22 -0700 |
| commit | 063e409dcc37a5834fe94342b3cbcfe17d094eed (patch) | |
| tree | ce9f11a3640abb9f07b11c07b7412d0e305286c0 /arch/openrisc/mm/cache.c | |
| parent | 994209410919f2b84b7e4ab2e78785d9715308ad (diff) | |
| download | linux-063e409dcc37a5834fe94342b3cbcfe17d094eed.tar.gz linux-063e409dcc37a5834fe94342b3cbcfe17d094eed.tar.bz2 linux-063e409dcc37a5834fe94342b3cbcfe17d094eed.zip | |
openrisc: implement the new page table range API
Add PFN_PTE_SHIFT, update_mmu_cache_range() and flush_dcache_folio().
Change the PG_arch_1 (aka PG_dcache_dirty) flag from being per-page to
per-folio.
Link: https://lkml.kernel.org/r/20230802151406.3735276-20-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Stafford Horne <shorne@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/openrisc/mm/cache.c')
| -rw-r--r-- | arch/openrisc/mm/cache.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/openrisc/mm/cache.c b/arch/openrisc/mm/cache.c index 534a52ec5e66..eb43b73f3855 100644 --- a/arch/openrisc/mm/cache.c +++ b/arch/openrisc/mm/cache.c @@ -43,15 +43,19 @@ void update_cache(struct vm_area_struct *vma, unsigned long address, pte_t *pte) { unsigned long pfn = pte_val(*pte) >> PAGE_SHIFT; - struct page *page = pfn_to_page(pfn); - int dirty = !test_and_set_bit(PG_dc_clean, &page->flags); + struct folio *folio = page_folio(pfn_to_page(pfn)); + int dirty = !test_and_set_bit(PG_dc_clean, &folio->flags); /* * Since icaches do not snoop for updated data on OpenRISC, we * must write back and invalidate any dirty pages manually. We * can skip data pages, since they will not end up in icaches. */ - if ((vma->vm_flags & VM_EXEC) && dirty) - sync_icache_dcache(page); + if ((vma->vm_flags & VM_EXEC) && dirty) { + unsigned int nr = folio_nr_pages(folio); + + while (nr--) + sync_icache_dcache(folio_page(folio, nr)); + } } |