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mm: convert generic code to 5-level paging
Convert all non-architecture-specific code to 5-level paging. It's mostly mechanical adding handling one more page table level in places where we deal with pud_t. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
committed by
Linus Torvalds
parent
048456dcf2
commit
c2febafc67
@@ -193,14 +193,14 @@ static inline unsigned long change_pmd_range(struct vm_area_struct *vma,
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}
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static inline unsigned long change_pud_range(struct vm_area_struct *vma,
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pgd_t *pgd, unsigned long addr, unsigned long end,
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p4d_t *p4d, unsigned long addr, unsigned long end,
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pgprot_t newprot, int dirty_accountable, int prot_numa)
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{
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pud_t *pud;
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unsigned long next;
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unsigned long pages = 0;
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pud = pud_offset(pgd, addr);
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pud = pud_offset(p4d, addr);
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do {
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next = pud_addr_end(addr, end);
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if (pud_none_or_clear_bad(pud))
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@@ -212,6 +212,26 @@ static inline unsigned long change_pud_range(struct vm_area_struct *vma,
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return pages;
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}
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static inline unsigned long change_p4d_range(struct vm_area_struct *vma,
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pgd_t *pgd, unsigned long addr, unsigned long end,
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pgprot_t newprot, int dirty_accountable, int prot_numa)
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{
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p4d_t *p4d;
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unsigned long next;
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unsigned long pages = 0;
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p4d = p4d_offset(pgd, addr);
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do {
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next = p4d_addr_end(addr, end);
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if (p4d_none_or_clear_bad(p4d))
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continue;
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pages += change_pud_range(vma, p4d, addr, next, newprot,
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dirty_accountable, prot_numa);
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} while (p4d++, addr = next, addr != end);
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return pages;
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}
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static unsigned long change_protection_range(struct vm_area_struct *vma,
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unsigned long addr, unsigned long end, pgprot_t newprot,
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int dirty_accountable, int prot_numa)
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@@ -230,7 +250,7 @@ static unsigned long change_protection_range(struct vm_area_struct *vma,
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next = pgd_addr_end(addr, end);
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if (pgd_none_or_clear_bad(pgd))
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continue;
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pages += change_pud_range(vma, pgd, addr, next, newprot,
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pages += change_p4d_range(vma, pgd, addr, next, newprot,
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dirty_accountable, prot_numa);
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} while (pgd++, addr = next, addr != end);
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