diff options
Diffstat (limited to 'include/asm-s390/pgtable.h')
| -rw-r--r-- | include/asm-s390/pgtable.h | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/include/asm-s390/pgtable.h b/include/asm-s390/pgtable.h index 36bb6dacf008..ae61aca5d483 100644 --- a/include/asm-s390/pgtable.h +++ b/include/asm-s390/pgtable.h @@ -107,16 +107,27 @@ extern char empty_zero_page[PAGE_SIZE]; * The vmalloc() routines leaves a hole of 4kB between each vmalloced * area for the same reason. ;) */ +extern unsigned long vmalloc_end; #define VMALLOC_OFFSET (8*1024*1024) #define VMALLOC_START (((unsigned long) high_memory + VMALLOC_OFFSET) \ & ~(VMALLOC_OFFSET-1)) +#define VMALLOC_END vmalloc_end + +/* + * We need some free virtual space to be able to do vmalloc. + * VMALLOC_MIN_SIZE defines the minimum size of the vmalloc + * area. On a machine with 2GB memory we make sure that we + * have at least 128MB free space for vmalloc. On a machine + * with 4TB we make sure we have at least 128GB. + */ #ifndef __s390x__ -# define VMALLOC_END (0x7fffffffL) +#define VMALLOC_MIN_SIZE 0x8000000UL +#define VMALLOC_END_INIT 0x80000000UL #else /* __s390x__ */ -# define VMALLOC_END (0x40000000000L) +#define VMALLOC_MIN_SIZE 0x2000000000UL +#define VMALLOC_END_INIT 0x40000000000UL #endif /* __s390x__ */ - /* * A 31 bit pagetable entry of S390 has following format: * | PFRA | | OS | @@ -806,11 +817,17 @@ static inline pte_t mk_swap_pte(unsigned long type, unsigned long offset) #define kern_addr_valid(addr) (1) +extern int add_shared_memory(unsigned long start, unsigned long size); +extern int remove_shared_memory(unsigned long start, unsigned long size); + /* * No page table caches to initialise */ #define pgtable_cache_init() do { } while (0) +#define __HAVE_ARCH_MEMMAP_INIT +extern void memmap_init(unsigned long, int, unsigned long, unsigned long); + #define __HAVE_ARCH_PTEP_ESTABLISH #define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG |