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| author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-09-16 01:14:23 -0400 |
|---|---|---|
| committer | Nicolas Pitre <nico@fluxnic.net> | 2011-11-26 19:21:28 -0500 |
| commit | 576d2f2525612ecb5af029a76f21f22a3b82563d (patch) | |
| tree | 81f9564c432ceeb4068dd3a5de204134a32c98f3 /arch/arm/mm/mmu.c | |
| parent | 6ee723a6570a897208b76ab3e9a495e9106b2f8c (diff) | |
| download | lwn-576d2f2525612ecb5af029a76f21f22a3b82563d.tar.gz lwn-576d2f2525612ecb5af029a76f21f22a3b82563d.zip | |
ARM: add generic ioremap optimization by reusing static mappings
Now that we have all the static mappings from iotable_init() located
in the vmalloc area, it is trivial to optimize ioremap by reusing those
static mappings when the requested physical area fits in one of them,
and so in a generic way for all platforms.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Kevin Hilman <khilman@ti.com>
Tested-by: Jamie Iles <jamie@jamieiles.com>
Diffstat (limited to 'arch/arm/mm/mmu.c')
| -rw-r--r-- | arch/arm/mm/mmu.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index c61481577ae1..27e366af67f9 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -749,7 +749,8 @@ void __init iotable_init(struct map_desc *io_desc, int nr) vm->addr = (void *)(md->virtual & PAGE_MASK); vm->size = PAGE_ALIGN(md->length + (md->virtual & ~PAGE_MASK)); vm->phys_addr = __pfn_to_phys(md->pfn); - vm->flags = VM_IOREMAP; + vm->flags = VM_IOREMAP | VM_ARM_STATIC_MAPPING; + vm->flags |= VM_ARM_MTYPE(md->type); vm->caller = iotable_init; vm_area_add_early(vm++); } |