ARC: mm: Introduce PTE_SPECIAL (24830fc7) · Commits · 戴 / test

arch/arc/include/asm/pgtable.h

+5 −2

Original line number	Diff line number	Diff line
		@@ -61,6 +61,7 @@
		#define _PAGE_WRITE (1<<4) /* Page has user write perm (H) */
		#define _PAGE_READ (1<<5) /* Page has user read perm (H) */
		#define _PAGE_DIRTY (1<<6) /* Page modified (dirty) (S) */
		#define _PAGE_SPECIAL (1<<7)
		#define _PAGE_GLOBAL (1<<8) /* Page is global (H) */
		#define _PAGE_PRESENT (1<<10) /* TLB entry is valid (H) */

		@@ -72,6 +73,7 @@
		#define _PAGE_READ (1<<3) /* Page has user read perm (H) */
		#define _PAGE_ACCESSED (1<<4) /* Page is accessed (S) */
		#define _PAGE_DIRTY (1<<5) /* Page modified (dirty) (S) */
		#define _PAGE_SPECIAL (1<<6)

		#if (CONFIG_ARC_MMU_VER >= 4)
		#define _PAGE_WTHRU (1<<7) /* Page cache mode write-thru (H) */
		@@ -292,7 +294,7 @@ static inline void pmd_set(pmd_t pmdp, pte_t ptep)
		#define pte_write(pte) (pte_val(pte) & _PAGE_WRITE)
		#define pte_dirty(pte) (pte_val(pte) & _PAGE_DIRTY)
		#define pte_young(pte) (pte_val(pte) & _PAGE_ACCESSED)
		#define pte_special(pte) (0)
		#define pte_special(pte) (pte_val(pte) & _PAGE_SPECIAL)

		#define PTE_BIT_FUNC(fn, op) \
		static inline pte_t pte_##fn(pte_t pte) { pte_val(pte) op; return pte; }
		@@ -305,8 +307,9 @@ PTE_BIT_FUNC(mkold, &= ~(_PAGE_ACCESSED));
		PTE_BIT_FUNC(mkyoung, \|= (_PAGE_ACCESSED));
		PTE_BIT_FUNC(exprotect, &= ~(_PAGE_EXECUTE));
		PTE_BIT_FUNC(mkexec, \|= (_PAGE_EXECUTE));
		PTE_BIT_FUNC(mkspecial, \|= (_PAGE_SPECIAL));

		static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
		#define __HAVE_ARCH_PTE_SPECIAL

		static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
		{