diff options
Diffstat (limited to 'arch/s390/include/asm/pgtable.h')
-rw-r--r-- | arch/s390/include/asm/pgtable.h | 23 |
1 files changed, 3 insertions, 20 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 4f289ff0b7fe..011358c1b18e 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h | |||
@@ -128,28 +128,11 @@ static inline int is_zero_pfn(unsigned long pfn) | |||
128 | * effect, this also makes sure that 64 bit module code cannot be used | 128 | * effect, this also makes sure that 64 bit module code cannot be used |
129 | * as system call address. | 129 | * as system call address. |
130 | */ | 130 | */ |
131 | |||
132 | extern unsigned long VMALLOC_START; | 131 | extern unsigned long VMALLOC_START; |
132 | extern unsigned long VMALLOC_END; | ||
133 | extern struct page *vmemmap; | ||
133 | 134 | ||
134 | #ifndef __s390x__ | 135 | #define VMEM_MAX_PHYS ((unsigned long) vmemmap) |
135 | #define VMALLOC_SIZE (96UL << 20) | ||
136 | #define VMALLOC_END 0x7e000000UL | ||
137 | #define VMEM_MAP_END 0x80000000UL | ||
138 | #else /* __s390x__ */ | ||
139 | #define VMALLOC_SIZE (128UL << 30) | ||
140 | #define VMALLOC_END 0x3e000000000UL | ||
141 | #define VMEM_MAP_END 0x40000000000UL | ||
142 | #endif /* __s390x__ */ | ||
143 | |||
144 | /* | ||
145 | * VMEM_MAX_PHYS is the highest physical address that can be added to the 1:1 | ||
146 | * mapping. This needs to be calculated at compile time since the size of the | ||
147 | * VMEM_MAP is static but the size of struct page can change. | ||
148 | */ | ||
149 | #define VMEM_MAX_PAGES ((VMEM_MAP_END - VMALLOC_END) / sizeof(struct page)) | ||
150 | #define VMEM_MAX_PFN min(VMALLOC_START >> PAGE_SHIFT, VMEM_MAX_PAGES) | ||
151 | #define VMEM_MAX_PHYS ((VMEM_MAX_PFN << PAGE_SHIFT) & ~((16 << 20) - 1)) | ||
152 | #define vmemmap ((struct page *) VMALLOC_END) | ||
153 | 136 | ||
154 | /* | 137 | /* |
155 | * A 31 bit pagetable entry of S390 has following format: | 138 | * A 31 bit pagetable entry of S390 has following format: |