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| author | Catalin Marinas <catalin.marinas@arm.com> | 2014-07-21 15:54:50 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2014-07-23 15:28:15 +0100 |
| commit | 383c2799113b00a5f12c820ff0fd3dfca9e5be89 (patch) | |
| tree | f2f9788dcbfa62fe6160cae82e67b8d83eca5bc0 /arch/arm64/Kconfig | |
| parent | 7078db46215f9137801a122f87ac31c504220a94 (diff) | |
| download | linux-383c2799113b00a5f12c820ff0fd3dfca9e5be89.tar.bz2 | |
arm64: Add support for 48-bit VA space with 64KB page configuration
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>
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 8cdb7f36bfc8..f4615ba88a77 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -210,6 +210,7 @@ config ARM64_VA_BITS config ARM64_PGTABLE_LEVELS int default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42 + default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48 default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39 default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48 |