MIPS: mm: Clean up setup of protection map

Protection map difference between RIXI and non RIXI cpus is _PAGE_NO_EXEC
and _PAGE_NO_READ usage. Both already take care of cpu_has_rixi while
setting up the page bits. So we just need one setup of protection map
and can drop the now unused (and broken for RIXI) PAGE_* defines.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index e5ef0fd..158ba3a 100644 (file)
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -25,14 +25,6 @@
 struct mm_struct;
 struct vm_area_struct;
 
-#define PAGE_NONE      __pgprot(_PAGE_PRESENT | _PAGE_NO_READ | \
-                                _page_cachable_default)
-#define PAGE_SHARED    __pgprot(_PAGE_PRESENT | _PAGE_WRITE | \
-                                _page_cachable_default)
-#define PAGE_COPY      __pgprot(_PAGE_PRESENT | _PAGE_NO_EXEC | \
-                                _page_cachable_default)
-#define PAGE_READONLY  __pgprot(_PAGE_PRESENT | \
-                                _page_cachable_default)
 #define PAGE_KERNEL    __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \
                                 _PAGE_GLOBAL | _page_cachable_default)
 #define PAGE_KERNEL_NC __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \

diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index f66a8bf..36bcf4e 100644 (file)
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -159,43 +159,24 @@ EXPORT_SYMBOL(_page_cachable_default);
 
 static inline void setup_protection_map(void)
 {
-       if (cpu_has_rixi) {
-               protection_map[0]  = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
-               protection_map[1]  = PM(_PAGE_PRESENT | _PAGE_NO_EXEC);
-               protection_map[2]  = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
-               protection_map[3]  = PM(_PAGE_PRESENT | _PAGE_NO_EXEC);
-               protection_map[4]  = PM(_PAGE_PRESENT);
-               protection_map[5]  = PM(_PAGE_PRESENT);
-               protection_map[6]  = PM(_PAGE_PRESENT);
-               protection_map[7]  = PM(_PAGE_PRESENT);
-
-               protection_map[8]  = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
-               protection_map[9]  = PM(_PAGE_PRESENT | _PAGE_NO_EXEC);
-               protection_map[10] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_WRITE | _PAGE_NO_READ);
-               protection_map[11] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_WRITE);
-               protection_map[12] = PM(_PAGE_PRESENT);
-               protection_map[13] = PM(_PAGE_PRESENT);
-               protection_map[14] = PM(_PAGE_PRESENT | _PAGE_WRITE);
-               protection_map[15] = PM(_PAGE_PRESENT | _PAGE_WRITE);
-
-       } else {
-               protection_map[0] = PAGE_NONE;
-               protection_map[1] = PAGE_READONLY;
-               protection_map[2] = PAGE_COPY;
-               protection_map[3] = PAGE_COPY;
-               protection_map[4] = PAGE_READONLY;
-               protection_map[5] = PAGE_READONLY;
-               protection_map[6] = PAGE_COPY;
-               protection_map[7] = PAGE_COPY;
-               protection_map[8] = PAGE_NONE;
-               protection_map[9] = PAGE_READONLY;
-               protection_map[10] = PAGE_SHARED;
-               protection_map[11] = PAGE_SHARED;
-               protection_map[12] = PAGE_READONLY;
-               protection_map[13] = PAGE_READONLY;
-               protection_map[14] = PAGE_SHARED;
-               protection_map[15] = PAGE_SHARED;
-       }
+       protection_map[0]  = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
+       protection_map[1]  = PM(_PAGE_PRESENT | _PAGE_NO_EXEC);
+       protection_map[2]  = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
+       protection_map[3]  = PM(_PAGE_PRESENT | _PAGE_NO_EXEC);
+       protection_map[4]  = PM(_PAGE_PRESENT);
+       protection_map[5]  = PM(_PAGE_PRESENT);
+       protection_map[6]  = PM(_PAGE_PRESENT);
+       protection_map[7]  = PM(_PAGE_PRESENT);
+
+       protection_map[8]  = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
+       protection_map[9]  = PM(_PAGE_PRESENT | _PAGE_NO_EXEC);
+       protection_map[10] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_WRITE |
+                               _PAGE_NO_READ);
+       protection_map[11] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_WRITE);
+       protection_map[12] = PM(_PAGE_PRESENT);
+       protection_map[13] = PM(_PAGE_PRESENT);
+       protection_map[14] = PM(_PAGE_PRESENT | _PAGE_WRITE);
+       protection_map[15] = PM(_PAGE_PRESENT | _PAGE_WRITE);
 }
 
 #undef PM