diff options
Diffstat (limited to 'arch/s390/include/asm/pgtable.h')
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 57c882761dea..5e102422c9ab 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -133,6 +133,18 @@ extern unsigned long MODULES_END; #define MODULES_LEN (1UL << 31) #endif +static inline int is_module_addr(void *addr) +{ +#ifdef CONFIG_64BIT + BUILD_BUG_ON(MODULES_LEN > (1UL << 31)); + if (addr < (void *)MODULES_VADDR) + return 0; + if (addr > (void *)MODULES_END) + return 0; +#endif + return 1; +} + /* * A 31 bit pagetable entry of S390 has following format: * | PFRA | | OS | @@ -479,6 +491,11 @@ static inline int mm_has_pgste(struct mm_struct *mm) return 0; } +/* + * In the case that a guest uses storage keys + * faults should no longer be backed by zero pages + */ +#define mm_forbids_zeropage mm_use_skey static inline int mm_use_skey(struct mm_struct *mm) { #ifdef CONFIG_PGSTE @@ -1634,6 +1651,19 @@ static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm, return pmd; } +#define __HAVE_ARCH_PMDP_GET_AND_CLEAR_FULL +static inline pmd_t pmdp_get_and_clear_full(struct mm_struct *mm, + unsigned long address, + pmd_t *pmdp, int full) +{ + pmd_t pmd = *pmdp; + + if (!full) + pmdp_flush_lazy(mm, address, pmdp); + pmd_clear(pmdp); + return pmd; +} + #define __HAVE_ARCH_PMDP_CLEAR_FLUSH static inline pmd_t pmdp_clear_flush(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp) @@ -1746,7 +1776,8 @@ static inline pte_t mk_swap_pte(unsigned long type, unsigned long offset) extern int vmem_add_mapping(unsigned long start, unsigned long size); extern int vmem_remove_mapping(unsigned long start, unsigned long size); extern int s390_enable_sie(void); -extern void s390_enable_skey(void); +extern int s390_enable_skey(void); +extern void s390_reset_cmma(struct mm_struct *mm); /* * No page table caches to initialise |