* inside the pgd, so has no extra memory associated with it.
*/
#define pud_alloc_one(mm, address) NULL
-#define pud_free(x) do { } while (0)
+#define pud_free(mm, x) do { } while (0)
#define __pud_free_tlb(tlb, x) do { } while (0)
/*
static inline int pte_dirty(pte_t pte) { return (pte).pte & _PAGE_DIRTY; }
static inline int pte_young(pte_t pte) { return (pte).pte & _PAGE_ACCESSED; }
static inline int pte_write(pte_t pte) { return !((pte).pte & _PAGE_WP); }
+static inline int pte_special(pte_t pte) { return 0; }
static inline pte_t pte_mkclean(pte_t pte) { (pte).pte &= ~_PAGE_DIRTY; return pte; }
static inline pte_t pte_mkold(pte_t pte) { (pte).pte &= ~_PAGE_ACCESSED; return pte; }
static inline pte_t pte_mkdirty(pte_t pte) { (pte).pte |= _PAGE_DIRTY; return pte; }
static inline pte_t pte_mkyoung(pte_t pte) { (pte).pte |= _PAGE_ACCESSED; return pte; }
static inline pte_t pte_mkwrite(pte_t pte) { (pte).pte &= ~_PAGE_WP; return pte; }
+static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
{
*/
static inline void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte)
{
+ struct mm_struct *mm;
unsigned long ampr;
- pgd_t *pge = pgd_offset(current->mm, address);
- pud_t *pue = pud_offset(pge, address);
- pmd_t *pme = pmd_offset(pue, address);
- ampr = pme->ste[0] & 0xffffff00;
- ampr |= xAMPRx_L | xAMPRx_SS_16Kb | xAMPRx_S | xAMPRx_C | xAMPRx_V;
+ mm = current->mm;
+ if (mm) {
+ pgd_t *pge = pgd_offset(mm, address);
+ pud_t *pue = pud_offset(pge, address);
+ pmd_t *pme = pmd_offset(pue, address);
+
+ ampr = pme->ste[0] & 0xffffff00;
+ ampr |= xAMPRx_L | xAMPRx_SS_16Kb | xAMPRx_S | xAMPRx_C |
+ xAMPRx_V;
+ } else {
+ address = ULONG_MAX;
+ ampr = 0;
+ }
asm volatile("movgs %0,scr0\n"
"movgs %0,scr1\n"