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csky: implement the new page table range API

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Add PFN_PTE_SHIFT, update_mmu_cache_range() and flush_dcache_folio().
Change the PG_dcache_clean flag from being per-page to per-folio.

Link: https://lkml.kernel.org/r/20230802151406.3735276-12-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Guo Ren <guoren@kernel.org>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle)
2023-08-02 16:13:39 +01:00
committed by Andrew Morton
parent 4a169d61c2
commit e724e7aaf9
5 changed files with 51 additions and 35 deletions
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8
arch/csky/include/asm/pgtable.h
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@@ -28,6 +28,7 @@
#define pgd_ERROR(e) \
pr_err("%s:%d: bad pgd %08lx.\n", __FILE__, __LINE__, pgd_val(e))
#define PFN_PTE_SHIFT PAGE_SHIFT
#define pmd_pfn(pmd) (pmd_phys(pmd) >> PAGE_SHIFT)
#define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
#define pte_clear(mm, addr, ptep) set_pte((ptep), \
@@ -90,7 +91,6 @@ static inline void set_pte(pte_t *p, pte_t pte)
/* prevent out of order excution */
smp_mb();
}
#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
static inline pte_t *pmd_page_vaddr(pmd_t pmd)
{
@@ -263,8 +263,10 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
extern void paging_init(void);
void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
pte_t *pte);
void update_mmu_cache_range(struct vm_fault *vmf, struct vm_area_struct *vma,
unsigned long address, pte_t *pte, unsigned int nr);
#define update_mmu_cache(vma, addr, ptep) \
update_mmu_cache_range(NULL, vma, addr, ptep, 1)
#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
remap_pfn_range(vma, vaddr, pfn, size, prot)