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-rw-r--r--include/asm-s390/pgtable.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/include/asm-s390/pgtable.h b/include/asm-s390/pgtable.h
index 3f520754e71..65d33384915 100644
--- a/include/asm-s390/pgtable.h
+++ b/include/asm-s390/pgtable.h
@@ -127,8 +127,9 @@ extern char empty_zero_page[PAGE_SIZE];
* mapping. This needs to be calculated at compile time since the size of the
* VMEM_MAP is static but the size of struct page can change.
*/
-#define VMEM_MAX_PHYS min(VMALLOC_START, ((VMEM_MAP_END - VMALLOC_END) / \
- sizeof(struct page) * PAGE_SIZE) & ~((16 << 20) - 1))
+#define VMEM_MAX_PAGES ((VMEM_MAP_END - VMALLOC_END) / sizeof(struct page))
+#define VMEM_MAX_PFN min(VMALLOC_START >> PAGE_SHIFT, VMEM_MAX_PAGES)
+#define VMEM_MAX_PHYS ((VMEM_MAX_PFN << PAGE_SHIFT) & ~((16 << 20) - 1))
#define VMEM_MAP ((struct page *) VMALLOC_END)
/*