Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[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..3ecd741 100644 (file)
--- a/include/asm-s390/page.h
+++ b/include/asm-s390/page.h
@@ -16,6 +16,8 @@
 #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__
@@ -106,19 +108,8 @@ 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)
 
-/* 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..
@@ -162,6 +153,25 @@ 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 */
@@ -171,8 +181,6 @@ typedef struct { unsigned long pgd; } pgd_t;
 #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)
@@ -181,6 +189,11 @@ typedef struct { unsigned long pgd; } pgd_t;
 #define VM_DATA_DEFAULT_FLAGS  (VM_READ | VM_WRITE | VM_EXEC | \
                                 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
+#define devmem_is_allowed(x) 1
+
 #endif /* __KERNEL__ */
 
+#include <asm-generic/memory_model.h>
+#include <asm-generic/page.h>
+
 #endif /* _S390_PAGE_H */