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| author | Will Deacon <will.deacon@arm.com> | 2011-02-15 12:42:57 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-02-15 14:20:23 +0000 |
| commit | cae6292b653f5e3308bf2787a54b7dcd2cc7e2b3 (patch) | |
| tree | b9f6847d0cf392a9519800db3b99ea1e9090617e | |
| parent | ad6b9c9d78b9beebef02ac7f566a08db7be3c320 (diff) | |
| download | op-kernel-dev-cae6292b653f5e3308bf2787a54b7dcd2cc7e2b3.zip op-kernel-dev-cae6292b653f5e3308bf2787a54b7dcd2cc7e2b3.tar.gz | |
ARM: 6672/1: LPAE: use phys_addr_t instead of unsigned long in mapping functions
The unsigned long datatype is not sufficient for mapping physical addresses
>= 4GB.
This patch ensures that the phys_addr_t datatype is used to represent physical
addresses when converting from a PFN.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/include/asm/pgtable.h | 2 | ||||
| -rw-r--r-- | arch/arm/mm/init.c | 6 | ||||
| -rw-r--r-- | arch/arm/mm/mmu.c | 7 |
3 files changed, 8 insertions, 7 deletions
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h index ebcb643..ca56791 100644 --- a/arch/arm/include/asm/pgtable.h +++ b/arch/arm/include/asm/pgtable.h @@ -351,7 +351,7 @@ static inline pte_t *pmd_page_vaddr(pmd_t pmd) #define pte_unmap(pte) __pte_unmap(pte) #define pte_pfn(pte) (pte_val(pte) >> PAGE_SHIFT) -#define pfn_pte(pfn,prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot)) +#define pfn_pte(pfn,prot) __pte(__pfn_to_phys(pfn) | pgprot_val(prot)) #define pte_page(pte) pfn_to_page(pte_pfn(pte)) #define mk_pte(page,prot) pfn_pte(page_to_pfn(page), prot) diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 5164069..14a00a1 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -344,7 +344,7 @@ void __init bootmem_init(void) */ arm_bootmem_free(min, max_low, max_high); - high_memory = __va((max_low << PAGE_SHIFT) - 1) + 1; + high_memory = __va(((phys_addr_t)max_low << PAGE_SHIFT) - 1) + 1; /* * This doesn't seem to be used by the Linux memory manager any @@ -392,8 +392,8 @@ free_memmap(unsigned long start_pfn, unsigned long end_pfn) * Convert to physical addresses, and * round start upwards and end downwards. */ - pg = PAGE_ALIGN(__pa(start_pg)); - pgend = __pa(end_pg) & PAGE_MASK; + pg = (unsigned long)PAGE_ALIGN(__pa(start_pg)); + pgend = (unsigned long)__pa(end_pg) & PAGE_MASK; /* * If there are free pages between these, diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index f512ad9..e09744e 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -591,7 +591,7 @@ static void __init create_36bit_mapping(struct map_desc *md, pgd_t *pgd; addr = md->virtual; - phys = (unsigned long)__pfn_to_phys(md->pfn); + phys = __pfn_to_phys(md->pfn); length = PAGE_ALIGN(md->length); if (!(cpu_architecture() >= CPU_ARCH_ARMv6 || cpu_is_xsc3())) { @@ -651,7 +651,8 @@ static void __init create_36bit_mapping(struct map_desc *md, */ static void __init create_mapping(struct map_desc *md) { - unsigned long phys, addr, length, end; + unsigned long addr, length, end; + phys_addr_t phys; const struct mem_type *type; pgd_t *pgd; @@ -680,7 +681,7 @@ static void __init create_mapping(struct map_desc *md) } addr = md->virtual & PAGE_MASK; - phys = (unsigned long)__pfn_to_phys(md->pfn); + phys = __pfn_to_phys(md->pfn); length = PAGE_ALIGN(md->length + (md->virtual & ~PAGE_MASK)); if (type->prot_l1 == 0 && ((addr | phys | length) & ~SECTION_MASK)) { |
