#define USER_PTRS_PER_PGD (TASK_SIZE / PGDIR_SIZE)
#define FIRST_USER_ADDRESS 0
-#define PTE_PHYS_MASK 0x1ffff000
-
#ifndef __ASSEMBLY__
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
extern void paging_init(void);
#define _PAGE_S(x) _PAGE_NORMAL(x)
#define PAGE_COPY _PAGE_P(PAGE_WRITE | PAGE_READ)
+#define PAGE_SHARED _PAGE_S(PAGE_WRITE | PAGE_READ)
#ifndef __ASSEMBLY__
/*
* The following only work if pte_present() is true.
* Undefined behaviour if not..
*/
-static inline int pte_read(pte_t pte)
-{
- return pte_val(pte) & _PAGE_USER;
-}
static inline int pte_write(pte_t pte)
{
return pte_val(pte) & _PAGE_RW;
}
-static inline int pte_exec(pte_t pte)
-{
- return pte_val(pte) & _PAGE_EXECUTE;
-}
static inline int pte_dirty(pte_t pte)
{
return pte_val(pte) & _PAGE_DIRTY;
}
/* Mutator functions for PTE bits */
-static inline pte_t pte_rdprotect(pte_t pte)
-{
- set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_USER));
- return pte;
-}
static inline pte_t pte_wrprotect(pte_t pte)
{
set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_RW));
return pte;
}
-static inline pte_t pte_exprotect(pte_t pte)
-{
- set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_EXECUTE));
- return pte;
-}
static inline pte_t pte_mkclean(pte_t pte)
{
set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_DIRTY));
set_pte(&pte, __pte(pte_val(pte) & ~_PAGE_ACCESSED));
return pte;
}
-static inline pte_t pte_mkread(pte_t pte)
-{
- set_pte(&pte, __pte(pte_val(pte) | _PAGE_USER));
- return pte;
-}
static inline pte_t pte_mkwrite(pte_t pte)
{
set_pte(&pte, __pte(pte_val(pte) | _PAGE_RW));
return pte;
}
-static inline pte_t pte_mkexec(pte_t pte)
-{
- set_pte(&pte, __pte(pte_val(pte) | _PAGE_EXECUTE));
- return pte;
-}
static inline pte_t pte_mkdirty(pte_t pte)
{
set_pte(&pte, __pte(pte_val(pte) | _PAGE_DIRTY));
* trivial.
*/
#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
-#define pte_page(x) phys_to_page(pte_val(x) & PTE_PHYS_MASK)
+#define pte_page(x) (pfn_to_page(pte_pfn(x)))
/*
* Mark the prot value as uncacheable and unbufferable