diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2007-07-04 21:16:33 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-07-04 21:16:33 +0100 |
| commit | 7b9c7b4d07fd8981193a2c4ecb650566f42d1219 (patch) | |
| tree | bd80d48a0d024588571b9c9d30d3f8ee8cbe1418 | |
| parent | 1f750a782c0e9593a8d0981ea972f22334980955 (diff) | |
[ARM] Fix non-page aligned boot time mappings
AT91SAM9260 stopped booting with the recent changes to MM
initialisation - it was asking for a non-aligned virtual address
which caused loops to be non-terminal. Fix this by rounding
virtual addresses down, but remember to include the offset in
the length, and round the length up to the following page.
This means that asking for a mapping of 4K starting at 2K into
a page maps two pages as one would expect.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/mm/mmu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 02e050ae59f..3b5e47dc0c9 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -527,9 +527,9 @@ void __init create_mapping(struct map_desc *md) return; } - addr = md->virtual; + addr = md->virtual & PAGE_MASK; phys = (unsigned long)__pfn_to_phys(md->pfn); - length = PAGE_ALIGN(md->length); + length = PAGE_ALIGN(md->length + (md->virtual & ~PAGE_MASK)); if (type->prot_l1 == 0 && ((addr | phys | length) & ~SECTION_MASK)) { printk(KERN_WARNING "BUG: map for 0x%08lx at 0x%08lx can not " |