diff options
Diffstat (limited to 'arch/mips/include/asm/pgtable.h')
| -rw-r--r-- | arch/mips/include/asm/pgtable.h | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h index 1854336e56a..7e40f377817 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); } |