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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-11-21 19:27:49 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-02-21 22:24:14 +0300 |
| commit | 516295e5ab4bf986865cfff856d484ec678e3b0b (patch) | |
| tree | 2125f49635462fca18ac6d36ebf7363d3cc6d521 /arch/arm/mm/mmu.c | |
| parent | f60892d3e36dcdd0d9f30db05beae7a446a93f28 (diff) | |
| download | linux-516295e5ab4bf986865cfff856d484ec678e3b0b.tar.xz | |
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/mmu.c')
| -rw-r--r-- | arch/arm/mm/mmu.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 176749010935..82ef6966ae09 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -550,11 +550,11 @@ static void __init alloc_init_pte(pmd_t *pmd, unsigned long addr, } while (pte++, addr += PAGE_SIZE, addr != end); } -static void __init alloc_init_section(pgd_t *pgd, unsigned long addr, +static void __init alloc_init_section(pud_t *pud, unsigned long addr, unsigned long end, phys_addr_t phys, const struct mem_type *type) { - pmd_t *pmd = pmd_offset(pgd, addr); + pmd_t *pmd = pmd_offset(pud, addr); /* * Try a section mapping - end, addr and phys must all be aligned @@ -583,6 +583,19 @@ static void __init alloc_init_section(pgd_t *pgd, unsigned long addr, } } +static void alloc_init_pud(pgd_t *pgd, unsigned long addr, unsigned long end, + unsigned long phys, const struct mem_type *type) +{ + pud_t *pud = pud_offset(pgd, addr); + unsigned long next; + + do { + next = pud_addr_end(addr, end); + alloc_init_section(pud, addr, next, phys, type); + phys += next - addr; + } while (pud++, addr = next, addr != end); +} + static void __init create_36bit_mapping(struct map_desc *md, const struct mem_type *type) { @@ -630,7 +643,8 @@ static void __init create_36bit_mapping(struct map_desc *md, pgd = pgd_offset_k(addr); end = addr + length; do { - pmd_t *pmd = pmd_offset(pgd, addr); + pud_t *pud = pud_offset(pgd, addr); + pmd_t *pmd = pmd_offset(pud, addr); int i; for (i = 0; i < 16; i++) @@ -696,7 +710,7 @@ static void __init create_mapping(struct map_desc *md) do { unsigned long next = pgd_addr_end(addr, end); - alloc_init_section(pgd, addr, next, phys, type); + alloc_init_pud(pgd, addr, next, phys, type); phys += next - addr; addr = next; |