From 4891645e764d2e181b834509a689fcd12e890c10 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Wed, 30 Jan 2008 13:32:58 +0100 Subject: x86: unify paravirt pagetable accessors Put all the defines for mapping pagetable operations to their native versions (for the non-paravirt case) into one place. Make the corresponding changes to paravirt.h. The tricky part here is that when a pagetable entry can't be updated atomically (ie, 32-bit PAE), we need special handlers for pte_clear, set_pte_atomic and set_pte_present. However, the other two modes don't need special handling for these, and can use a common set_pte(_at) path. [ mingo@elte.hu: fixes ] Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- include/asm-x86/paravirt.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/asm-x86/paravirt.h') diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h index 24385decbd4..4aa06b929e4 100644 --- a/include/asm-x86/paravirt.h +++ b/include/asm-x86/paravirt.h @@ -1039,6 +1039,27 @@ static inline void set_pmd(pmd_t *pmdp, pmd_t pmdval) { PVOP_VCALL2(pv_mmu_ops.set_pmd, pmdp, pmdval.pud.pgd.pgd); } + +static inline void pmd_clear(pmd_t *pmdp) +{ + set_pmd(pmdp, __pmd(0)); +} + +static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) +{ + set_pte_at(mm, addr, ptep, __pte(0)); +} + +static inline void set_pte_atomic(pte_t *ptep, pte_t pte) +{ + set_pte(ptep, pte); +} + +static inline void set_pte_present(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte) +{ + set_pte(ptep, pte); +} #endif /* CONFIG_X86_PAE */ /* Lazy mode for batching updates / context switch */ -- cgit v1.2.3