1 files changed, 19 insertions, 12 deletions

diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index 1854336e56a2..7e40f3778179 100644
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -22,23 +22,24 @@ struct mm_struct;
 struct vm_area_struct;
 
 #define PAGE_NONE       __pgprot(_PAGE_PRESENT | _CACHE_CACHABLE_NONCOHERENT)
-#define PAGE_SHARED     __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
+#define PAGE_SHARED     __pgprot(_PAGE_PRESENT | _PAGE_WRITE | (kernel_uses_smartmips_rixi ? 0 : _PAGE_READ) | \
                                  _page_cachable_default)
-#define PAGE_COPY       __pgprot(_PAGE_PRESENT | _PAGE_READ | \
-                                 _page_cachable_default)
-#define PAGE_READONLY   __pgprot(_PAGE_PRESENT | _PAGE_READ | \
+#define PAGE_COPY       __pgprot(_PAGE_PRESENT | (kernel_uses_smartmips_rixi ? 0 : _PAGE_READ) | \
+                                 (kernel_uses_smartmips_rixi ?  _PAGE_NO_EXEC : 0) | _page_cachable_default)
+#define PAGE_READONLY   __pgprot(_PAGE_PRESENT | (kernel_uses_smartmips_rixi ? 0 : _PAGE_READ) | \
                                  _page_cachable_default)
 #define PAGE_KERNEL     __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \
                                  _PAGE_GLOBAL | _page_cachable_default)
-#define PAGE_USERIO     __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
+#define PAGE_USERIO     __pgprot(_PAGE_PRESENT | (kernel_uses_smartmips_rixi ? 0 : _PAGE_READ) | _PAGE_WRITE | \
                                  _page_cachable_default)
 #define PAGE_KERNEL_UNCACHED __pgprot(_PAGE_PRESENT | __READABLE | \
                         __WRITEABLE | _PAGE_GLOBAL | _CACHE_UNCACHED)
 
 /*
- * MIPS can't do page protection for execute, and considers that the same like
- * read. Also, write permissions imply read permissions. This is the closest
- * we can get by reasonable means..
+ * If _PAGE_NO_EXEC is not defined, we can't do page protection for
+ * execute, and consider it to be the same as read. Also, write
+ * permissions imply read permissions. This is the closest we can get
+ * by reasonable means..
  */
 
 /*
@@ -177,7 +178,7 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt
  */
 #define set_pmd(pmdptr, pmdval) do { *(pmdptr) = (pmdval); } while(0)
 
-#ifdef CONFIG_64BIT
+#ifndef __PAGETABLE_PMD_FOLDED
 /*
  * (puds are folded into pgds so this doesn't get actually called,
  * but the define is needed for a generic inline function.)
@@ -298,8 +299,13 @@ static inline pte_t pte_mkdirty(pte_t pte)
 static inline pte_t pte_mkyoung(pte_t pte)
 {
         pte_val(pte) |= _PAGE_ACCESSED;
-        if (pte_val(pte) & _PAGE_READ)
-                pte_val(pte) |= _PAGE_SILENT_READ;
+        if (kernel_uses_smartmips_rixi) {
+                if (!(pte_val(pte) & _PAGE_NO_READ))
+                        pte_val(pte) |= _PAGE_SILENT_READ;
+        } else {
+                if (pte_val(pte) & _PAGE_READ)
+                        pte_val(pte) |= _PAGE_SILENT_READ;
+        }
         return pte;
 }
 
@@ -362,8 +368,9 @@ extern void __update_cache(struct vm_area_struct *vma, unsigned long address,
         pte_t pte);
 
 static inline void update_mmu_cache(struct vm_area_struct *vma,
-        unsigned long address, pte_t pte)
+        unsigned long address, pte_t *ptep)
 {
+        pte_t pte = *ptep;
         __update_tlb(vma, address, pte);
         __update_cache(vma, address, pte);
 }