Commit ee5aa8d3 authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Ingo Molnar
Browse files

x86/pgtable.h: demacro ptep_set_access_flags 



Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 2761fa09

arch/x86/mm/pgtable.c

+16 −0
Original line number Diff line number Diff line 
#include <linux/mm.h>

#include <asm/pgalloc.h>

#include <asm/pgtable.h>

#include <asm/tlb.h>



pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
@@ -264,3 +265,18 @@ void pgd_free(struct mm_struct *mm, pgd_t *pgd) 
	free_page((unsigned long)pgd);

}

#endif



int ptep_set_access_flags(struct vm_area_struct *vma,

			  unsigned long address, pte_t *ptep,

			  pte_t entry, int dirty)

{

	int changed = !pte_same(*ptep, entry);



	if (changed && dirty) {

		*ptep = entry;

		pte_update_defer(vma->vm_mm, address, ptep);

		flush_tlb_page(vma, address);

	}



	return changed;

}

include/asm-x86/pgtable.h

+3 −10
Original line number Diff line number Diff line
@@ -389,16 +389,9 @@ static inline void native_set_pte_at(struct mm_struct *mm, unsigned long addr, 
 * bit at the same time.

 */

#define  __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS

#define ptep_set_access_flags(vma, address, ptep, entry, dirty)		\

({									\

	int __changed = !pte_same(*(ptep), entry);			\

	if (__changed && dirty) {					\

		*ptep = entry;						\

		pte_update_defer((vma)->vm_mm, (address), (ptep));	\

		flush_tlb_page(vma, address);				\

	}								\

	__changed;							\

})

extern int ptep_set_access_flags(struct vm_area_struct *vma,

				 unsigned long address, pte_t *ptep,

				 pte_t entry, int dirty);



#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG

#define ptep_test_and_clear_young(vma, addr, ptep) ({			\