+ /* Flushing the whole cache on each cpu takes forever on
+ rp3440, etc. So, avoid it if the mm isn't too big. */
+ if (mm_total_size(mm) < parisc_cache_flush_threshold) {
+ struct vm_area_struct *vma;
+
+ if (mm->context == mfsp(3)) {
+ for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ flush_user_dcache_range_asm(vma->vm_start,
+ vma->vm_end);
+ if (vma->vm_flags & VM_EXEC)
+ flush_user_icache_range_asm(
+ vma->vm_start, vma->vm_end);
+ }
+ } else {
+ pgd_t *pgd = mm->pgd;
+
+ for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ unsigned long addr;
+
+ for (addr = vma->vm_start; addr < vma->vm_end;
+ addr += PAGE_SIZE) {
+ pte_t *ptep = get_ptep(pgd, addr);
+ if (ptep != NULL) {
+ pte_t pte = *ptep;
+ __flush_cache_page(vma, addr,
+ page_to_phys(pte_page(pte)));
+ }
+ }
+ }
+ }
+ return;
+ }
+