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authorNicolas Pitre <nicolas.pitre@linaro.org>2011-09-16 01:14:23 -0400
committerNicolas Pitre <nico@fluxnic.net>2011-11-26 19:21:28 -0500
commit576d2f2525612ecb5af029a76f21f22a3b82563d (patch)
tree81f9564c432ceeb4068dd3a5de204134a32c98f3 /arch/arm/mm/mmu.c
parent6ee723a6570a897208b76ab3e9a495e9106b2f8c (diff)
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.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index c61481577ae..27e366af67f 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++);
}