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authorRussell King <rmk+kernel@arm.linux.org.uk>2010-11-21 17:27:49 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-02-21 20:24:14 +0100
commit516295e5ab4bf986865cfff856d484ec678e3b0b (patch)
tree2125f49635462fca18ac6d36ebf7363d3cc6d521 /arch/arm/mm/fault-armv.c
parentARM: 6673/1: LPAE: use phys_addr_t instead of unsigned long for start of memb... (diff)
downloadlinux-516295e5ab4bf986865cfff856d484ec678e3b0b.tar.xz
linux-516295e5ab4bf986865cfff856d484ec678e3b0b.zip
ARM: pgtable: add pud-level code
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>
Diffstat (limited to 'arch/arm/mm/fault-armv.c')
-rw-r--r--arch/arm/mm/fault-armv.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c
index 01210dba0221..7cab79179421 100644
--- a/arch/arm/mm/fault-armv.c
+++ b/arch/arm/mm/fault-armv.c
@@ -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;