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Optimize the Linux arch xen implementation of "set_pte_at".
Signed-off-by: ian@xensource.com
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iap10@freefall.cl.cam.ac.uk committed
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@@ -14,7 +14,17 @@
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* hook is made available.
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*/
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#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
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#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
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inline static void set_pte_at(struct mm_struct *mm, unsigned long addr,
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pte_t *ptep, pte_t val )
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{
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if ( ((mm != current->mm) && (mm != &init_mm)) ||
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HYPERVISOR_update_va_mapping( (addr), (val), 0 ) )
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{
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set_pte(ptep, val);
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}
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}
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#define set_pte_atomic(pteptr, pteval) set_pte(pteptr,pteval)
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#ifndef CONFIG_XEN_SHADOW_MODE
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@@ -68,7 +68,16 @@ static inline void set_pte(pte_t *ptep, pte_t pte)
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xen_l1_entry_update((pteptr), (pteval))
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# define set_pte_atomic(pteptr,pteval) set_pte(pteptr,pteval)
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#endif
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#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
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inline static void set_pte_at(struct mm_struct *mm, unsigned long addr,
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pte_t *ptep, pte_t val )
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{
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if ( ((mm != current->mm) && (mm != &init_mm)) ||
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HYPERVISOR_update_va_mapping( (addr), (val), 0 ) )
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{
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set_pte(ptep, val);
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}
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}
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#ifdef CONFIG_XEN_SHADOW_MODE
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# define set_pmd(pmdptr,pmdval) \
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@@ -265,7 +265,16 @@ static inline unsigned long pud_bad(pud_t pud)
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val &= ~(_PAGE_USER | _PAGE_DIRTY);
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return val & ~(_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED);
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}
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#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
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inline static void set_pte_at(struct mm_struct *mm, unsigned long addr,
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pte_t *ptep, pte_t val )
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{
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if ( ((mm != current->mm) && (mm != &init_mm)) ||
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HYPERVISOR_update_va_mapping( (addr), (val), 0 ) )
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{
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set_pte(ptep, val);
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}
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}
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#define pte_none(x) (!(x).pte)
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#define pte_present(x) ((x).pte & (_PAGE_PRESENT | _PAGE_PROTNONE))
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