diff options
Diffstat (limited to 'arch/s390/include/asm/tlb.h')
-rw-r--r-- | arch/s390/include/asm/tlb.h | 42 |
1 files changed, 30 insertions, 12 deletions
diff --git a/arch/s390/include/asm/tlb.h b/arch/s390/include/asm/tlb.h index 3a5c8fb590e5..e95b2c8081eb 100644 --- a/arch/s390/include/asm/tlb.h +++ b/arch/s390/include/asm/tlb.h @@ -25,7 +25,9 @@ void __tlb_remove_table(void *_table); static inline void tlb_flush(struct mmu_gather *tlb); static inline bool __tlb_remove_page_size(struct mmu_gather *tlb, - struct page *page, int page_size); + struct page *page, bool delay_rmap, int page_size); +static inline bool __tlb_remove_folio_pages(struct mmu_gather *tlb, + struct page *page, unsigned int nr_pages, bool delay_rmap); #define tlb_flush tlb_flush #define pte_free_tlb pte_free_tlb @@ -40,14 +42,33 @@ static inline bool __tlb_remove_page_size(struct mmu_gather *tlb, * Release the page cache reference for a pte removed by * tlb_ptep_clear_flush. In both flush modes the tlb for a page cache page * has already been freed, so just do free_page_and_swap_cache. + * + * s390 doesn't delay rmap removal. */ static inline bool __tlb_remove_page_size(struct mmu_gather *tlb, - struct page *page, int page_size) + struct page *page, bool delay_rmap, int page_size) { + VM_WARN_ON_ONCE(delay_rmap); + free_page_and_swap_cache(page); return false; } +static inline bool __tlb_remove_folio_pages(struct mmu_gather *tlb, + struct page *page, unsigned int nr_pages, bool delay_rmap) +{ + struct encoded_page *encoded_pages[] = { + encode_page(page, ENCODED_PAGE_BIT_NR_PAGES_NEXT), + encode_nr_pages(nr_pages), + }; + + VM_WARN_ON_ONCE(delay_rmap); + VM_WARN_ON_ONCE(page_folio(page) != page_folio(page + nr_pages - 1)); + + free_pages_and_swap_cache(encoded_pages, ARRAY_SIZE(encoded_pages)); + return false; +} + static inline void tlb_flush(struct mmu_gather *tlb) { __tlb_flush_mm_lazy(tlb->mm); @@ -64,12 +85,9 @@ static inline void pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, tlb->mm->context.flush_mm = 1; tlb->freed_tables = 1; tlb->cleared_pmds = 1; - /* - * page_table_free_rcu takes care of the allocation bit masks - * of the 2K table fragments in the 4K page table page, - * then calls tlb_remove_table. - */ - page_table_free_rcu(tlb, (unsigned long *) pte, address); + if (mm_alloc_pgste(tlb->mm)) + gmap_unlink(tlb->mm, (unsigned long *)pte, address); + tlb_remove_ptdesc(tlb, pte); } /* @@ -84,12 +102,12 @@ static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, { if (mm_pmd_folded(tlb->mm)) return; - pgtable_pmd_page_dtor(virt_to_page(pmd)); + pagetable_pmd_dtor(virt_to_ptdesc(pmd)); __tlb_adjust_range(tlb, address, PAGE_SIZE); tlb->mm->context.flush_mm = 1; tlb->freed_tables = 1; tlb->cleared_puds = 1; - tlb_remove_table(tlb, pmd); + tlb_remove_ptdesc(tlb, pmd); } /* @@ -107,7 +125,7 @@ static inline void p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d, __tlb_adjust_range(tlb, address, PAGE_SIZE); tlb->mm->context.flush_mm = 1; tlb->freed_tables = 1; - tlb_remove_table(tlb, p4d); + tlb_remove_ptdesc(tlb, p4d); } /* @@ -125,7 +143,7 @@ static inline void pud_free_tlb(struct mmu_gather *tlb, pud_t *pud, tlb->mm->context.flush_mm = 1; tlb->freed_tables = 1; tlb->cleared_p4ds = 1; - tlb_remove_table(tlb, pud); + tlb_remove_ptdesc(tlb, pud); } |