From 85958b465c2e0de315575b1d3d7e7c2ce7126880 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Mon, 17 Mar 2008 16:37:14 -0700 Subject: x86: unify pgd ctor/dtor All pagetables need fundamentally the same setup and destruction, so just use the same code for everything. Signed-off-by: Jeremy Fitzhardinge Cc: Andi Kleen Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- include/asm-x86/pgtable.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/asm-x86/pgtable.h') diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h index e61075e70a54..b8a08bd7bd48 100644 --- a/include/asm-x86/pgtable.h +++ b/include/asm-x86/pgtable.h @@ -438,6 +438,22 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, pte_update(mm, addr, ptep); } +/* + * clone_pgd_range(pgd_t *dst, pgd_t *src, int count); + * + * dst - pointer to pgd range anwhere on a pgd page + * src - "" + * count - the number of pgds to copy. + * + * dst and src can be on the same page, but the range must not overlap, + * and must not cross a page boundary. + */ +static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count) +{ + memcpy(dst, src, count * sizeof(pgd_t)); +} + + #include #endif /* __ASSEMBLY__ */ -- cgit v1.2.2