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arm64: mm: Add definitions to support 5 levels of paging
Add the required types and descriptor accessors to support 5 levels of paging in the common code. This is one of the prerequisites for supporting 52-bit virtual addressing with 4k pages. Note that this does not cover the code that handles kernel mappings or the fixmap. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20240214122845.2033971-76-ardb+git@google.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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