diff options
| -rw-r--r-- | arch/powerpc/include/asm/book3s/32/pgtable.h | 9 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/nohash/32/pgtable.h | 12 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/nohash/pgtable.h | 3 | ||||
| -rw-r--r-- | arch/powerpc/mm/pgtable.c | 21 | ||||
| -rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 15 | ||||
| -rw-r--r-- | arch/powerpc/mm/pgtable_64.c | 14 | ||||
| -rw-r--r-- | arch/powerpc/xmon/xmon.c | 12 |
7 files changed, 41 insertions, 45 deletions
diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h index a6ca799e0eb5..a0dc3a3eef33 100644 --- a/arch/powerpc/include/asm/book3s/32/pgtable.h +++ b/arch/powerpc/include/asm/book3s/32/pgtable.h @@ -331,17 +331,14 @@ static inline bool pte_ci(pte_t pte) #define pte_access_permitted pte_access_permitted static inline bool pte_access_permitted(pte_t pte, bool write) { - unsigned long pteval = pte_val(pte); /* * A read-only access is controlled by _PAGE_USER bit. * We have _PAGE_READ set for WRITE and EXECUTE */ - unsigned long need_pte_bits = _PAGE_PRESENT | _PAGE_USER; - - if (write) - need_pte_bits |= _PAGE_WRITE; + if (!pte_present(pte) || !pte_user(pte) || !pte_read(pte)) + return false; - if ((pteval & need_pte_bits) != need_pte_bits) + if (write && !pte_write(pte)) return false; return true; diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h index 6fecfd7854f5..a4156da4a7a4 100644 --- a/arch/powerpc/include/asm/nohash/32/pgtable.h +++ b/arch/powerpc/include/asm/nohash/32/pgtable.h @@ -277,7 +277,10 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { - pte_update(ptep, (_PAGE_RW | _PAGE_HWWRITE), _PAGE_RO); + unsigned long clr = ~pte_val(pte_wrprotect(__pte(~0))); + unsigned long set = pte_val(pte_wrprotect(__pte(0))); + + pte_update(ptep, clr, set); } static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep) @@ -291,9 +294,10 @@ static inline void __ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address, int psize) { - unsigned long set = pte_val(entry) & - (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC); - unsigned long clr = ~pte_val(entry) & (_PAGE_RO | _PAGE_NA); + pte_t pte_set = pte_mkyoung(pte_mkdirty(pte_mkwrite(pte_mkexec(__pte(0))))); + pte_t pte_clr = pte_mkyoung(pte_mkdirty(pte_mkwrite(pte_mkexec(__pte(~0))))); + unsigned long set = pte_val(entry) & pte_val(pte_set); + unsigned long clr = ~pte_val(entry) & ~pte_val(pte_clr); pte_update(ptep, clr, set); diff --git a/arch/powerpc/include/asm/nohash/pgtable.h b/arch/powerpc/include/asm/nohash/pgtable.h index b256e38a047c..062d96233673 100644 --- a/arch/powerpc/include/asm/nohash/pgtable.h +++ b/arch/powerpc/include/asm/nohash/pgtable.h @@ -32,8 +32,7 @@ static inline pgprot_t pte_pgprot(pte_t pte) { return __pgprot(pte_val(pte) & PA */ static inline int pte_protnone(pte_t pte) { - return (pte_val(pte) & - (_PAGE_PRESENT | _PAGE_USER)) == _PAGE_PRESENT; + return pte_present(pte) && !pte_user(pte); } static inline int pmd_protnone(pmd_t pmd) diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index f97d9c3760e3..ca4b1f7ac39d 100644 --- a/arch/powerpc/mm/pgtable.c +++ b/arch/powerpc/mm/pgtable.c @@ -44,20 +44,13 @@ static inline int is_exec_fault(void) static inline int pte_looks_normal(pte_t pte) { -#if defined(CONFIG_PPC_BOOK3S_64) - if ((pte_val(pte) & (_PAGE_PRESENT | _PAGE_SPECIAL)) == _PAGE_PRESENT) { + if (pte_present(pte) && !pte_special(pte)) { if (pte_ci(pte)) return 0; if (pte_user(pte)) return 1; } return 0; -#else - return (pte_val(pte) & - (_PAGE_PRESENT | _PAGE_SPECIAL | _PAGE_NO_CACHE | _PAGE_USER | - _PAGE_PRIVILEGED)) == - (_PAGE_PRESENT | _PAGE_USER); -#endif } static struct page *maybe_pte_to_page(pte_t pte) @@ -117,7 +110,7 @@ static pte_t set_pte_filter(pte_t pte) struct page *pg; /* No exec permission in the first place, move on */ - if (!(pte_val(pte) & _PAGE_EXEC) || !pte_looks_normal(pte)) + if (!pte_exec(pte) || !pte_looks_normal(pte)) return pte; /* If you set _PAGE_EXEC on weird pages you're on your own */ @@ -137,7 +130,7 @@ static pte_t set_pte_filter(pte_t pte) } /* Else, we filter out _PAGE_EXEC */ - return __pte(pte_val(pte) & ~_PAGE_EXEC); + return pte_exprotect(pte); } static pte_t set_access_flags_filter(pte_t pte, struct vm_area_struct *vma, @@ -150,7 +143,7 @@ static pte_t set_access_flags_filter(pte_t pte, struct vm_area_struct *vma, * if necessary. Also if _PAGE_EXEC is already set, same deal, * we just bail out */ - if (dirty || (pte_val(pte) & _PAGE_EXEC) || !is_exec_fault()) + if (dirty || pte_exec(pte) || !is_exec_fault()) return pte; #ifdef CONFIG_DEBUG_VM @@ -176,7 +169,7 @@ static pte_t set_access_flags_filter(pte_t pte, struct vm_area_struct *vma, set_bit(PG_arch_1, &pg->flags); bail: - return __pte(pte_val(pte) | _PAGE_EXEC); + return pte_mkexec(pte); } #endif /* CONFIG_PPC_BOOK3S */ @@ -191,10 +184,10 @@ void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, * Make sure hardware valid bit is not set. We don't do * tlb flush for this update. */ - VM_WARN_ON(pte_val(*ptep) & _PAGE_PRESENT); + VM_WARN_ON(pte_hw_valid(*ptep)); /* Add the pte bit when trying to set a pte */ - pte = __pte(pte_val(pte) | _PAGE_PTE); + pte = pte_mkpte(pte); /* Note: mm->context.id might not yet have been assigned as * this context might not have been activated yet when this diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 01f348938328..5877f5aa8f5d 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -112,15 +112,17 @@ EXPORT_SYMBOL(ioremap_coherent); void __iomem * ioremap_prot(phys_addr_t addr, unsigned long size, unsigned long flags) { + pte_t pte = __pte(flags); + /* writeable implies dirty for kernel addresses */ - if ((flags & (_PAGE_RW | _PAGE_RO)) != _PAGE_RO) - flags |= _PAGE_DIRTY | _PAGE_HWWRITE; + if (pte_write(pte)) + pte = pte_mkdirty(pte); /* we don't want to let _PAGE_USER and _PAGE_EXEC leak out */ - flags &= ~(_PAGE_USER | _PAGE_EXEC); - flags |= _PAGE_PRIVILEGED; + pte = pte_exprotect(pte); + pte = pte_mkprivileged(pte); - return __ioremap_caller(addr, size, __pgprot(flags), __builtin_return_address(0)); + return __ioremap_caller(addr, size, pte_pgprot(pte), __builtin_return_address(0)); } EXPORT_SYMBOL(ioremap_prot); @@ -235,8 +237,7 @@ int map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot) /* The PTE should never be already set nor present in the * hash table */ - BUG_ON((pte_val(*pg) & (_PAGE_PRESENT | _PAGE_HASHPTE)) && - pgprot_val(prot)); + BUG_ON((pte_present(*pg) | pte_hashpte(*pg)) && pgprot_val(prot)); set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT, prot)); } smp_wmb(); diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index b0f4a4b4f62b..fb1375c07e8c 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -230,23 +230,23 @@ void __iomem *ioremap_coherent(phys_addr_t addr, unsigned long size) void __iomem * ioremap_prot(phys_addr_t addr, unsigned long size, unsigned long flags) { + pte_t pte = __pte(flags); void *caller = __builtin_return_address(0); /* writeable implies dirty for kernel addresses */ - if (flags & _PAGE_WRITE) - flags |= _PAGE_DIRTY; + if (pte_write(pte)) + pte = pte_mkdirty(pte); /* we don't want to let _PAGE_EXEC leak out */ - flags &= ~_PAGE_EXEC; + pte = pte_exprotect(pte); /* * Force kernel mapping. */ - flags &= ~_PAGE_USER; - flags |= _PAGE_PRIVILEGED; + pte = pte_mkprivileged(pte); if (ppc_md.ioremap) - return ppc_md.ioremap(addr, size, __pgprot(flags), caller); - return __ioremap_caller(addr, size, __pgprot(flags), caller); + return ppc_md.ioremap(addr, size, pte_pgprot(pte), caller); + return __ioremap_caller(addr, size, pte_pgprot(pte), caller); } diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index d139741f26fe..8345defa0e43 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -2996,15 +2996,17 @@ static void show_task(struct task_struct *tsk) #ifdef CONFIG_PPC_BOOK3S_64 void format_pte(void *ptep, unsigned long pte) { + pte_t entry = __pte(pte); + printf("ptep @ 0x%016lx = 0x%016lx\n", (unsigned long)ptep, pte); printf("Maps physical address = 0x%016lx\n", pte & PTE_RPN_MASK); printf("Flags = %s%s%s%s%s\n", - (pte & _PAGE_ACCESSED) ? "Accessed " : "", - (pte & _PAGE_DIRTY) ? "Dirty " : "", - (pte & _PAGE_READ) ? "Read " : "", - (pte & _PAGE_WRITE) ? "Write " : "", - (pte & _PAGE_EXEC) ? "Exec " : ""); + pte_young(entry) ? "Accessed " : "", + pte_dirty(entry) ? "Dirty " : "", + pte_read(entry) ? "Read " : "", + pte_write(entry) ? "Write " : "", + pte_exec(entry) ? "Exec " : ""); } static void show_pte(unsigned long addr) |