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-rw-r--r--include/asm-x86/pgtable.h156
1 files changed, 120 insertions, 36 deletions
diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h
index e814cfe96af2..2ce765070464 100644
--- a/include/asm-x86/pgtable.h
+++ b/include/asm-x86/pgtable.h
@@ -48,12 +48,15 @@
#endif
/* If _PAGE_PRESENT is clear, we use these: */
-#define _PAGE_FILE _PAGE_DIRTY /* nonlinear file mapping, saved PTE; unset:swap */
+#define _PAGE_FILE _PAGE_DIRTY /* nonlinear file mapping,
+ * saved PTE; unset:swap */
#define _PAGE_PROTNONE _PAGE_PSE /* if the user mapped it with PROT_NONE;
pte_present gives true */
-#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY)
-#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY)
+#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
+ _PAGE_ACCESSED | _PAGE_DIRTY)
+#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | \
+ _PAGE_DIRTY)
#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
@@ -64,14 +67,20 @@
#define _PAGE_CACHE_UC (_PAGE_PCD | _PAGE_PWT)
#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
-#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
-
-#define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED)
-#define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
-#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
+#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
+ _PAGE_ACCESSED | _PAGE_NX)
+
+#define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | \
+ _PAGE_USER | _PAGE_ACCESSED)
+#define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \
+ _PAGE_ACCESSED | _PAGE_NX)
+#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \
+ _PAGE_ACCESSED)
#define PAGE_COPY PAGE_COPY_NOEXEC
-#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
-#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
+#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | \
+ _PAGE_ACCESSED | _PAGE_NX)
+#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \
+ _PAGE_ACCESSED)
#ifdef CONFIG_X86_32
#define _PAGE_KERNEL_EXEC \
@@ -142,7 +151,7 @@ extern pteval_t __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
* ZERO_PAGE is a global shared page that is always zero: used
* for zero-mapped memory areas etc..
*/
-extern unsigned long empty_zero_page[PAGE_SIZE/sizeof(unsigned long)];
+extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)];
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
extern spinlock_t pgd_lock;
@@ -152,30 +161,101 @@ extern struct list_head pgd_list;
* The following only work if pte_present() is true.
* Undefined behaviour if not..
*/
-static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
-static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
-static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_RW; }
-static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; }
-static inline int pte_huge(pte_t pte) { return pte_val(pte) & _PAGE_PSE; }
-static inline int pte_global(pte_t pte) { return pte_val(pte) & _PAGE_GLOBAL; }
-static inline int pte_exec(pte_t pte) { return !(pte_val(pte) & _PAGE_NX); }
-
-static inline int pmd_large(pmd_t pte) {
- return (pmd_val(pte) & (_PAGE_PSE|_PAGE_PRESENT)) ==
- (_PAGE_PSE|_PAGE_PRESENT);
+static inline int pte_dirty(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_DIRTY;
+}
+
+static inline int pte_young(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_ACCESSED;
+}
+
+static inline int pte_write(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_RW;
+}
+
+static inline int pte_file(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_FILE;
+}
+
+static inline int pte_huge(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_PSE;
}
-static inline pte_t pte_mkclean(pte_t pte) { return __pte(pte_val(pte) & ~(pteval_t)_PAGE_DIRTY); }
-static inline pte_t pte_mkold(pte_t pte) { return __pte(pte_val(pte) & ~(pteval_t)_PAGE_ACCESSED); }
-static inline pte_t pte_wrprotect(pte_t pte) { return __pte(pte_val(pte) & ~(pteval_t)_PAGE_RW); }
-static inline pte_t pte_mkexec(pte_t pte) { return __pte(pte_val(pte) & ~(pteval_t)_PAGE_NX); }
-static inline pte_t pte_mkdirty(pte_t pte) { return __pte(pte_val(pte) | _PAGE_DIRTY); }
-static inline pte_t pte_mkyoung(pte_t pte) { return __pte(pte_val(pte) | _PAGE_ACCESSED); }
-static inline pte_t pte_mkwrite(pte_t pte) { return __pte(pte_val(pte) | _PAGE_RW); }
-static inline pte_t pte_mkhuge(pte_t pte) { return __pte(pte_val(pte) | _PAGE_PSE); }
-static inline pte_t pte_clrhuge(pte_t pte) { return __pte(pte_val(pte) & ~(pteval_t)_PAGE_PSE); }
-static inline pte_t pte_mkglobal(pte_t pte) { return __pte(pte_val(pte) | _PAGE_GLOBAL); }
-static inline pte_t pte_clrglobal(pte_t pte) { return __pte(pte_val(pte) & ~(pteval_t)_PAGE_GLOBAL); }
+static inline int pte_global(pte_t pte)
+{
+ return pte_val(pte) & _PAGE_GLOBAL;
+}
+
+static inline int pte_exec(pte_t pte)
+{
+ return !(pte_val(pte) & _PAGE_NX);
+}
+
+static inline int pmd_large(pmd_t pte)
+{
+ return (pmd_val(pte) & (_PAGE_PSE | _PAGE_PRESENT)) ==
+ (_PAGE_PSE | _PAGE_PRESENT);
+}
+
+static inline pte_t pte_mkclean(pte_t pte)
+{
+ return __pte(pte_val(pte) & ~(pteval_t)_PAGE_DIRTY);
+}
+
+static inline pte_t pte_mkold(pte_t pte)
+{
+ return __pte(pte_val(pte) & ~(pteval_t)_PAGE_ACCESSED);
+}
+
+static inline pte_t pte_wrprotect(pte_t pte)
+{
+ return __pte(pte_val(pte) & ~(pteval_t)_PAGE_RW);
+}
+
+static inline pte_t pte_mkexec(pte_t pte)
+{
+ return __pte(pte_val(pte) & ~(pteval_t)_PAGE_NX);
+}
+
+static inline pte_t pte_mkdirty(pte_t pte)
+{
+ return __pte(pte_val(pte) | _PAGE_DIRTY);
+}
+
+static inline pte_t pte_mkyoung(pte_t pte)
+{
+ return __pte(pte_val(pte) | _PAGE_ACCESSED);
+}
+
+static inline pte_t pte_mkwrite(pte_t pte)
+{
+ return __pte(pte_val(pte) | _PAGE_RW);
+}
+
+static inline pte_t pte_mkhuge(pte_t pte)
+{
+ return __pte(pte_val(pte) | _PAGE_PSE);
+}
+
+static inline pte_t pte_clrhuge(pte_t pte)
+{
+ return __pte(pte_val(pte) & ~(pteval_t)_PAGE_PSE);
+}
+
+static inline pte_t pte_mkglobal(pte_t pte)
+{
+ return __pte(pte_val(pte) | _PAGE_GLOBAL);
+}
+
+static inline pte_t pte_clrglobal(pte_t pte)
+{
+ return __pte(pte_val(pte) & ~(pteval_t)_PAGE_GLOBAL);
+}
extern pteval_t __supported_pte_mask;
@@ -342,7 +422,8 @@ static inline void native_set_pte_at(struct mm_struct *mm, unsigned long addr,
})
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
-static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep)
{
pte_t pte = native_ptep_get_and_clear(ptep);
pte_update(mm, addr, ptep);
@@ -350,7 +431,9 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
}
#define __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL
-static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, unsigned long addr, pte_t *ptep, int full)
+static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep,
+ int full)
{
pte_t pte;
if (full) {
@@ -366,7 +449,8 @@ static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, unsigned long
}
#define __HAVE_ARCH_PTEP_SET_WRPROTECT
-static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+static inline void ptep_set_wrprotect(struct mm_struct *mm,
+ unsigned long addr, pte_t *ptep)
{
clear_bit(_PAGE_BIT_RW, (unsigned long *)&ptep->pte);
pte_update(mm, addr, ptep);
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-20 05:36:50 +0000