1 files changed, 17 insertions, 8 deletions

diff --git a/arch/powerpc/include/asm/pte-common.h b/arch/powerpc/include/asm/pte-common.h
index e040c3595129..2aef9b7a0eb2 100644
--- a/arch/powerpc/include/asm/pte-common.h
+++ b/arch/powerpc/include/asm/pte-common.h
@@ -34,6 +34,12 @@
 #ifndef _PAGE_PSIZE
 #define _PAGE_PSIZE             0
 #endif
+/* _PAGE_RO and _PAGE_RW shall not be defined at the same time */
+#ifndef _PAGE_RO
+#define _PAGE_RO 0
+#else
+#define _PAGE_RW 0
+#endif
 #ifndef _PMD_PRESENT_MASK
 #define _PMD_PRESENT_MASK       _PMD_PRESENT
 #endif
@@ -42,10 +48,10 @@
 #define PMD_PAGE_SIZE(pmd)      bad_call_to_PMD_PAGE_SIZE()
 #endif
 #ifndef _PAGE_KERNEL_RO
-#define _PAGE_KERNEL_RO         0
+#define _PAGE_KERNEL_RO         (_PAGE_RO)
 #endif
 #ifndef _PAGE_KERNEL_ROX
-#define _PAGE_KERNEL_ROX        (_PAGE_EXEC)
+#define _PAGE_KERNEL_ROX        (_PAGE_EXEC | _PAGE_RO)
 #endif
 #ifndef _PAGE_KERNEL_RW
 #define _PAGE_KERNEL_RW         (_PAGE_DIRTY | _PAGE_RW | _PAGE_HWWRITE)
@@ -95,7 +101,7 @@ extern unsigned long bad_call_to_PMD_PAGE_SIZE(void);
 /* Mask of bits returned by pte_pgprot() */
 #define PAGE_PROT_BITS  (_PAGE_GUARDED | _PAGE_COHERENT | _PAGE_NO_CACHE | \
                          _PAGE_WRITETHRU | _PAGE_ENDIAN | _PAGE_4K_PFN | \
-                         _PAGE_USER | _PAGE_ACCESSED | \
+                         _PAGE_USER | _PAGE_ACCESSED | _PAGE_RO | \
                          _PAGE_RW | _PAGE_HWWRITE | _PAGE_DIRTY | _PAGE_EXEC)
 
 #ifdef CONFIG_NUMA_BALANCING
@@ -128,11 +134,14 @@ extern unsigned long bad_call_to_PMD_PAGE_SIZE(void);
  */
 #define PAGE_NONE       __pgprot(_PAGE_BASE)
 #define PAGE_SHARED     __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_RW)
-#define PAGE_SHARED_X   __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_RW | _PAGE_EXEC)
-#define PAGE_COPY       __pgprot(_PAGE_BASE | _PAGE_USER)
-#define PAGE_COPY_X     __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_EXEC)
-#define PAGE_READONLY   __pgprot(_PAGE_BASE | _PAGE_USER)
-#define PAGE_READONLY_X __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_EXEC)
+#define PAGE_SHARED_X   __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_RW | \
+                                 _PAGE_EXEC)
+#define PAGE_COPY       __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_RO)
+#define PAGE_COPY_X     __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_RO | \
+                                 _PAGE_EXEC)
+#define PAGE_READONLY   __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_RO)
+#define PAGE_READONLY_X __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_RO | \
+                                 _PAGE_EXEC)
 
 #define __P000  PAGE_NONE
 #define __P001  PAGE_READONLY