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Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6

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* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Add a secondary TSB for hugepage mappings.
  [SPARC]: Respect vm_page_prot in io_remap_page_range().
This commit is contained in:
Linus Torvalds
2006-03-22 10:56:57 -08:00
parent 36177ba655 dcc1e8dd88
commit d04ef3a795
24 changed files with 498 additions and 229 deletions
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28
arch/sparc64/mm/hugetlbpage.c
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@@ -199,13 +199,11 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
pte_t *pte = NULL;
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;
}
@@ -231,13 +229,14 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
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++;
@@ -253,6 +252,8 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
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);
@@ -290,6 +291,15 @@ static void context_reload(void *__data)
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.
*/