arm64: Add support for 48-bit VA space with 64KB page configuration

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This patch allows support for 3 levels of page tables with 64KB page
configuration allowing 48-bit VA space. The pgd is no longer a full
PAGE_SIZE (PTRS_PER_PGD is 64) and (swapper|idmap)_pg_dir are not fully
populated (pgd_alloc falls back to kzalloc).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Jungseok Lee <jungseoklee85@gmail.com>

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This commit is contained in:

Catalin Marinas 2014-07-21 15:54:50 +01:00

parent 7078db4621

commit 383c279911

4 changed files with 22 additions and 9 deletions

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8

Documentation/arm64/memory.txt

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1

arch/arm64/Kconfig

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16

arch/arm64/include/asm/page.h

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6

arch/arm64/kernel/head.S

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