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x86: add pud_alloc for 4-level pagetables

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Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jeremy Fitzhardinge
2008-03-17 16:37:02 -07:00
committed by Ingo Molnar
parent 6944a9c894
commit 2761fa0920
4 changed files with 17 additions and 0 deletions
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3
include/asm-x86/pgalloc.h
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@@ -11,8 +11,10 @@
#define paravirt_alloc_pte(mm, pfn) do { } while (0)
#define paravirt_alloc_pmd(mm, pfn) do { } while (0)
#define paravirt_alloc_pmd_clone(pfn, clonepfn, start, count) do { } while (0)
#define paravirt_alloc_pud(mm, pfn) do { } while (0)
#define paravirt_release_pte(pfn) do { } while (0)
#define paravirt_release_pmd(pfn) do { } while (0)
#define paravirt_release_pud(pfn) do { } while (0)
#endif
/*
@@ -85,6 +87,7 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
#if PAGETABLE_LEVELS > 3
static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
{
paravirt_alloc_pud(mm, __pa(pud) >> PAGE_SHIFT);
set_pgd(pgd, __pgd(_PAGE_TABLE | __pa(pud)));
}