pmd_t *pmd;
pte_t *pte = NULL;
+ /* We must align the address, because our caller will run
+ * set_huge_pte_at() on whatever we return, which writes out
+ * all of the sub-ptes for the hugepage range. So we have
+ * to give it the first such sub-pte.
+ */
+ addr &= HPAGE_MASK;
+
pgd = pgd_offset(mm, addr);
- if (pgd) {
- pud = pud_offset(pgd, addr);
- if (pud) {
- pmd = pmd_alloc(mm, pud, addr);
- if (pmd)
- pte = pte_alloc_map(mm, pmd, addr);
- }
+ pud = pud_alloc(mm, pgd, addr);
+ if (pud) {
+ pmd = pmd_alloc(mm, pud, addr);
+ if (pmd)
+ pte = pte_alloc_map(mm, pmd, addr);
}
return pte;
}
return pte;
}
-#define mk_pte_huge(entry) do { pte_val(entry) |= _PAGE_SZHUGE; } while (0)
-
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t entry)
{
int i;
+ if (!pte_present(*ptep) && pte_present(entry))
+ mm->context.huge_pte_count++;
+
for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
set_pte_at(mm, addr, ptep, entry);
ptep++;
int i;
entry = *ptep;
+ if (pte_present(entry))
+ mm->context.huge_pte_count--;
for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) {
pte_clear(mm, addr, ptep);
return entry;
}
-/*
- * This function checks for proper alignment of input addr and len parameters.
- */
-int is_aligned_hugepage_range(unsigned long addr, unsigned long len)
-{
- if (len & ~HPAGE_MASK)
- return -EINVAL;
- if (addr & ~HPAGE_MASK)
- return -EINVAL;
- return 0;
-}
-
struct page *follow_huge_addr(struct mm_struct *mm,
unsigned long address, int write)
{
void hugetlb_prefault_arch_hook(struct mm_struct *mm)
{
+ struct tsb_config *tp = &mm->context.tsb_block[MM_TSB_HUGE];
+
+ if (likely(tp->tsb != NULL))
+ return;
+
+ tsb_grow(mm, MM_TSB_HUGE, 0);
+ tsb_context_switch(mm);
+ smp_tsb_sync(mm);
+
/* On UltraSPARC-III+ and later, configure the second half of
* the Data-TLB for huge pages.
*/