diff options
| author | Becky Bruce <becky.bruce@freescale.com> | 2008-09-24 18:01:24 +0200 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2008-09-24 23:29:44 +0200 |
| commit | 4ee7084eb11e00eb02dc8435fd18273a61ffa9bf (patch) | |
| tree | f9f147f0293bc33e2962ac1c1aa5bbcbd9c0edce /arch/powerpc/include/asm/io.h | |
| parent | powerpc/mm: Implement _PAGE_SPECIAL & pte_special() for 32-bit (diff) | |
| download | linux-4ee7084eb11e00eb02dc8435fd18273a61ffa9bf.tar.xz linux-4ee7084eb11e00eb02dc8435fd18273a61ffa9bf.zip | |
POWERPC: Allow 32-bit hashed pgtable code to support 36-bit physical
This rearranges a bit of code, and adds support for
36-bit physical addressing for configs that use a
hashed page table. The 36b physical support is not
enabled by default on any config - it must be
explicitly enabled via the config system.
This patch *only* expands the page table code to accomodate
large physical addresses on 32-bit systems and enables the
PHYS_64BIT config option for 86xx. It does *not*
allow you to boot a board with more than about 3.5GB of
RAM - for that, SWIOTLB support is also required (and
coming soon).
Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/io.h')
| -rw-r--r-- | arch/powerpc/include/asm/io.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h index 77c7fa025e65..08266d2728b3 100644 --- a/arch/powerpc/include/asm/io.h +++ b/arch/powerpc/include/asm/io.h @@ -711,7 +711,7 @@ static inline void * phys_to_virt(unsigned long address) /* * Change "struct page" to physical address. */ -#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) +#define page_to_phys(page) ((phys_addr_t)page_to_pfn(page) << PAGE_SHIFT) /* We do NOT want virtual merging, it would put too much pressure on * our iommu allocator. Instead, we want drivers to be smart enough |