diff options
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 43 | ||||
| -rw-r--r-- | arch/s390/mm/vmem.c | 13 |
2 files changed, 46 insertions, 10 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 58e9950fd57f..898456957c44 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -270,9 +270,20 @@ static inline int is_module_addr(void *addr) #define _REGION3_ENTRY (_REGION_ENTRY_TYPE_R3 | _REGION_ENTRY_LENGTH) #define _REGION3_ENTRY_EMPTY (_REGION_ENTRY_TYPE_R3 | _REGION_ENTRY_INVALID) -#define _REGION3_ENTRY_LARGE 0x400 /* RTTE-format control, large page */ #define _REGION3_ENTRY_RO 0x200 /* page protection bit */ +#define _REGION3_ENTRY_DIRTY 0x2000 /* SW region dirty bit */ +#define _REGION3_ENTRY_YOUNG 0x1000 /* SW region young bit */ +#define _REGION3_ENTRY_LARGE 0x0400 /* RTTE-format control, large page */ +#define _REGION3_ENTRY_READ 0x0002 /* SW region read bit */ +#define _REGION3_ENTRY_WRITE 0x0001 /* SW region write bit */ + +#ifdef CONFIG_MEM_SOFT_DIRTY +#define _REGION3_ENTRY_SOFT_DIRTY 0x4000 /* SW region soft dirty bit */ +#else +#define _REGION3_ENTRY_SOFT_DIRTY 0x0000 /* SW region soft dirty bit */ +#endif + /* Bits in the segment table entry */ #define _SEGMENT_ENTRY_BITS 0xfffffffffffffe33UL #define _SEGMENT_ENTRY_BITS_LARGE 0xfffffffffff0ff33UL @@ -297,7 +308,8 @@ static inline int is_module_addr(void *addr) #endif /* - * Segment table entry encoding (R = read-only, I = invalid, y = young bit): + * Segment table and region3 table entry encoding + * (R = read-only, I = invalid, y = young bit): * dy..R...I...rw * prot-none, clean, old 00..1...1...00 * prot-none, clean, young 01..1...1...00 @@ -391,6 +403,33 @@ static inline int is_module_addr(void *addr) _SEGMENT_ENTRY_READ) #define SEGMENT_WRITE __pgprot(_SEGMENT_ENTRY_READ | \ _SEGMENT_ENTRY_WRITE) +#define SEGMENT_KERNEL __pgprot(_SEGMENT_ENTRY | \ + _SEGMENT_ENTRY_LARGE | \ + _SEGMENT_ENTRY_READ | \ + _SEGMENT_ENTRY_WRITE | \ + _SEGMENT_ENTRY_YOUNG | \ + _SEGMENT_ENTRY_DIRTY) +#define SEGMENT_KERNEL_RO __pgprot(_SEGMENT_ENTRY | \ + _SEGMENT_ENTRY_LARGE | \ + _SEGMENT_ENTRY_READ | \ + _SEGMENT_ENTRY_YOUNG | \ + _SEGMENT_ENTRY_PROTECT) + +/* + * Region3 entry (large page) protection definitions. + */ + +#define REGION3_KERNEL __pgprot(_REGION_ENTRY_TYPE_R3 | \ + _REGION3_ENTRY_LARGE | \ + _REGION3_ENTRY_READ | \ + _REGION3_ENTRY_WRITE | \ + _REGION3_ENTRY_YOUNG | \ + _REGION3_ENTRY_DIRTY) +#define REGION3_KERNEL_RO __pgprot(_REGION_ENTRY_TYPE_R3 | \ + _REGION3_ENTRY_LARGE | \ + _REGION3_ENTRY_READ | \ + _REGION3_ENTRY_YOUNG | \ + _REGION_ENTRY_PROTECT) static inline int mm_has_pgste(struct mm_struct *mm) { diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index a64b91a8e5ac..2020ef8c0413 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -99,9 +99,8 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro) if (MACHINE_HAS_EDAT2 && pud_none(*pu_dir) && address && !(address & ~PUD_MASK) && (address + PUD_SIZE <= end) && !debug_pagealloc_enabled()) { - pud_val(*pu_dir) = __pa(address) | - _REGION_ENTRY_TYPE_R3 | _REGION3_ENTRY_LARGE | - (ro ? _REGION_ENTRY_PROTECT : 0); + pud_val(*pu_dir) = address | + pgprot_val(ro ? REGION3_KERNEL_RO : REGION3_KERNEL); address += PUD_SIZE; continue; } @@ -115,10 +114,8 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro) if (MACHINE_HAS_EDAT1 && pmd_none(*pm_dir) && address && !(address & ~PMD_MASK) && (address + PMD_SIZE <= end) && !debug_pagealloc_enabled()) { - pmd_val(*pm_dir) = __pa(address) | - _SEGMENT_ENTRY | _SEGMENT_ENTRY_LARGE | - _SEGMENT_ENTRY_YOUNG | - (ro ? _SEGMENT_ENTRY_PROTECT : 0); + pmd_val(*pm_dir) = address | + pgprot_val(ro ? SEGMENT_KERNEL_RO : SEGMENT_KERNEL); address += PMD_SIZE; continue; } @@ -130,7 +127,7 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro) } pt_dir = pte_offset_kernel(pm_dir, address); - pte_val(*pt_dir) = __pa(address) | + pte_val(*pt_dir) = address | pgprot_val(ro ? PAGE_KERNEL_RO : PAGE_KERNEL); address += PAGE_SIZE; } |