arm64: add support for ioremap() block mappings

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This wires up the existing generic huge-vmap feature, which allows
ioremap() to use PMD or PUD sized block mappings. It also adds support
to the unmap path for dealing with block mappings, which will allow us
to unmap the __init region using unmap_kernel_range() in a subsequent
patch.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Ard Biesheuvel 2016-02-16 13:52:35 +01:00 • committed by Catalin Marinas

parent 03336b1df9

commit 324420bf91

4 changed files with 49 additions and 1 deletions

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2

Documentation/features/vm/huge-vmap/arch-support.txt

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1

arch/arm64/Kconfig

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6

arch/arm64/include/asm/memory.h

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41

arch/arm64/mm/mmu.c

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