- unsigned long phys_addr = PHYSADDR(to);
- unsigned long p3_addr = P3SEG + (address & CACHE_ALIAS);
- pgd_t *pgd = pgd_offset_k(p3_addr);
- pud_t *pud = pud_offset(pgd, p3_addr);
- pmd_t *pmd = pmd_offset(pud, p3_addr);
- pte_t *pte = pte_offset_kernel(pmd, p3_addr);
- pte_t entry;
- unsigned long flags;
-
- entry = pfn_pte(phys_addr >> PAGE_SHIFT, PAGE_KERNEL);
- mutex_lock(&p3map_mutex[(address & CACHE_ALIAS)>>12]);
- set_pte(pte, entry);
- local_irq_save(flags);
- flush_tlb_one(get_asid(), p3_addr);
- local_irq_restore(flags);
- update_mmu_cache(NULL, p3_addr, entry);
- __copy_user_page((void *)p3_addr, from, to);
- pte_clear(&init_mm, p3_addr, pte);
- mutex_unlock(&p3map_mutex[(address & CACHE_ALIAS)>>12]);
+ void *vfrom = kmap_coherent(page, address);
+ __copy_user_page(vfrom, from, to);
+ kunmap_coherent(vfrom);