tree bffaba5a78b9c022716fae0977f6d0f6d88941bb
parent 31ade3b83e1821da5fbb2f11b5b3d4ab2ec39db8
author Ard Biesheuvel <ard.biesheuvel@linaro.org> 1448886495 +0100
committer Will Deacon <will.deacon@arm.com> 1449680218 +0000

mm/memblock: add MEMBLOCK_NOMAP attribute to memblock memory table

This introduces the MEMBLOCK_NOMAP attribute and the required plumbing
to make it usable as an indicator that some parts of normal memory
should not be covered by the kernel direct mapping. It is up to the
arch to actually honor the attribute when laying out this mapping,
but the memblock code itself is modified to disregard these regions
for allocations and other general use.

Cc: linux-mm@kvack.org
Cc: Alexander Kuleshov <kuleshovmail@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>