vserver 1.9.5.x5

[linux-2.6.git] / include / asm-s390 / page.h

diff --git a/include/asm-s390/page.h b/include/asm-s390/page.h
index 6bed8d9..614e2a9 100644 (file)
--- a/include/asm-s390/page.h
+++ b/include/asm-s390/page.h
@@ -106,6 +106,9 @@ static inline void copy_page(void *to, void *from)
 #define clear_user_page(page, vaddr, pg)       clear_page(page)
 #define copy_user_page(to, from, vaddr, pg)    copy_page(to, from)
 
+#define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr)
+#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
+
 /* Pure 2^n version of get_order */
 extern __inline__ int get_order(unsigned long size)
 {
@@ -162,6 +165,25 @@ typedef struct { unsigned long pgd; } pgd_t;
 #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 */