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ARM: pgtable: add pud-level code

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Add pud_offset() et.al. between the pgd and pmd code in preparation of
using pgtable-nopud.h rather than 4level-fixup.h.

This incorporates a fix from Jamie Iles <jamie@jamieiles.com> for
uaccess_with_memcpy.c.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2010-11-21 16:27:49 +00:00
parent f60892d3e3
commit 516295e5ab
9 changed files with 116 additions and 22 deletions
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7
arch/arm/mm/fault-armv.c
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@@ -95,6 +95,7 @@ static int adjust_pte(struct vm_area_struct *vma, unsigned long address,
{
spinlock_t *ptl;
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
int ret;
@@ -103,7 +104,11 @@ static int adjust_pte(struct vm_area_struct *vma, unsigned long address,
if (pgd_none_or_clear_bad(pgd))
return 0;
pmd = pmd_offset(pgd, address);
pud = pud_offset(pgd, address);
if (pud_none_or_clear_bad(pud))
return 0;
pmd = pmd_offset(pud, address);
if (pmd_none_or_clear_bad(pmd))
return 0;