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| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2022-11-08 06:44:06 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2022-11-08 16:59:36 +0300 |
| commit | 38e4b6605e5cde68ba388f3175e7b4962694674c (patch) | |
| tree | f96c8c42ea22daf24e45b4323eec4a1b648ac1cd /arch/arm64/mm | |
| parent | e8e5104118473ffa23c013da42ae6a9df2867a07 (diff) | |
| download | linux-38e4b6605e5cde68ba388f3175e7b4962694674c.tar.xz | |
arm64/mm: Drop ARM64_KERNEL_USES_PMD_MAPS
Currently ARM64_KERNEL_USES_PMD_MAPS is an unnecessary abstraction. Kernel
mapping at PMD (aka huge page aka block) level, is only applicable with 4K
base page, which makes it 2MB aligned, a necessary requirement for linear
mapping and physical memory start address. This can be easily achieved by
directly checking against base page size itself. This drops off the macro
ARM64_KERNE_USES_PMD_MAPS which is redundant.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20221108034406.2950071-1-anshuman.khandual@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/mm')
| -rw-r--r-- | arch/arm64/mm/mmu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 9a7c38965154..d386033a074c 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -1196,7 +1196,7 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node, WARN_ON((start < VMEMMAP_START) || (end > VMEMMAP_END)); - if (!ARM64_KERNEL_USES_PMD_MAPS) + if (!IS_ENABLED(CONFIG_ARM64_4K_PAGES)) return vmemmap_populate_basepages(start, end, node, altmap); do { |