#define PAGE_SHIFT 12
#define PAGE_SIZE (1UL << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
+#define PAGE_DEFAULT_ACC 0
+#define PAGE_DEFAULT_KEY (PAGE_DEFAULT_ACC << 4)
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
#define clear_user_page(page, vaddr, pg) clear_page(page)
#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
-/* Pure 2^n version of get_order */
-extern __inline__ int get_order(unsigned long size)
-{
- int order;
-
- size = (size-1) >> (PAGE_SHIFT-1);
- order = -1;
- do {
- size >>= 1;
- order++;
- } while (size);
- return order;
-}
+#define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr)
+#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
/*
* These are used to make use of C type-checking..
#define __pgd(x) ((pgd_t) { (x) } )
#define __pgprot(x) ((pgprot_t) { (x) } )
+/* default storage key used for all pages */
+extern unsigned int default_storage_key;
+
+static inline void
+page_set_storage_key(unsigned long addr, unsigned int skey)
+{
+ asm volatile ( "sske %0,%1" : : "d" (skey), "a" (addr) );
+}
+
+static inline unsigned int
+page_get_storage_key(unsigned long addr)
+{
+ unsigned int skey;
+
+ asm volatile ( "iske %0,%1" : "=d" (skey) : "a" (addr), "0" (0) );
+
+ return skey;
+}
+
#endif /* !__ASSEMBLY__ */
/* to align the pointer to the (next) page boundary */
#define PAGE_OFFSET 0x0UL
#define __pa(x) (unsigned long)(x)
#define __va(x) (void *)(unsigned long)(x)
-#define pfn_to_page(pfn) (mem_map + (pfn))
-#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#endif /* __KERNEL__ */
+#include <asm-generic/memory_model.h>
+#include <asm-generic/page.h>
+
#endif /* _S390_PAGE_H */