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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-03-17 23:37:02 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-24 21:57:31 (GMT) |
| commit | 2761fa0920756dc471d297843646a4a9bca6656f (patch) | |
| tree | 2c558915fa11e55a3c15d50eeec55e4b4f5419ec | |
| parent | 6944a9c8945212a0cc1de3589736d59ec542c539 (diff) | |
| download | linux-2761fa0920756dc471d297843646a4a9bca6656f.tar.xz | |
x86: add pud_alloc for 4-level pagetables
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>
| -rw-r--r-- | arch/x86/kernel/paravirt.c | 2 | ||||
| -rw-r--r-- | arch/x86/mm/pgtable.c | 1 | ||||
| -rw-r--r-- | include/asm-x86/paravirt.h | 11 | ||||
| -rw-r--r-- | include/asm-x86/pgalloc.h | 3 |
4 files changed, 17 insertions, 0 deletions
diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 362653d..74f0c5e 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -369,8 +369,10 @@ struct pv_mmu_ops pv_mmu_ops = { .alloc_pte = paravirt_nop, .alloc_pmd = paravirt_nop, .alloc_pmd_clone = paravirt_nop, + .alloc_pud = paravirt_nop, .release_pte = paravirt_nop, .release_pmd = paravirt_nop, + .release_pud = paravirt_nop, .set_pte = native_set_pte, .set_pte_at = native_set_pte_at, diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index 1d44d6d..5accc08 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -38,6 +38,7 @@ void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd) #if PAGETABLE_LEVELS > 3 void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud) { + paravirt_release_pud(__pa(pud) >> PAGE_SHIFT); tlb_remove_page(tlb, virt_to_page(pud)); } #endif /* PAGETABLE_LEVELS > 3 */ diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h index c4480b9..0f13b94 100644 --- a/include/asm-x86/paravirt.h +++ b/include/asm-x86/paravirt.h @@ -223,8 +223,10 @@ struct pv_mmu_ops { void (*alloc_pte)(struct mm_struct *mm, u32 pfn); void (*alloc_pmd)(struct mm_struct *mm, u32 pfn); void (*alloc_pmd_clone)(u32 pfn, u32 clonepfn, u32 start, u32 count); + void (*alloc_pud)(struct mm_struct *mm, u32 pfn); void (*release_pte)(u32 pfn); void (*release_pmd)(u32 pfn); + void (*release_pud)(u32 pfn); /* Pagetable manipulation functions */ void (*set_pte)(pte_t *ptep, pte_t pteval); @@ -934,6 +936,15 @@ static inline void paravirt_release_pmd(unsigned pfn) PVOP_VCALL1(pv_mmu_ops.release_pmd, pfn); } +static inline void paravirt_alloc_pud(struct mm_struct *mm, unsigned pfn) +{ + PVOP_VCALL2(pv_mmu_ops.alloc_pud, mm, pfn); +} +static inline void paravirt_release_pud(unsigned pfn) +{ + PVOP_VCALL1(pv_mmu_ops.release_pud, pfn); +} + #ifdef CONFIG_HIGHPTE static inline void *kmap_atomic_pte(struct page *page, enum km_type type) { diff --git a/include/asm-x86/pgalloc.h b/include/asm-x86/pgalloc.h index a25d540..60e7f51 100644 --- a/include/asm-x86/pgalloc.h +++ b/include/asm-x86/pgalloc.h @@ -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))); } |