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arm64: mm: make vabits_actual a build time constant if possible
Currently, we only support 52-bit virtual addressing on 64k pages configurations, and in all other cases, vabits_actual is guaranteed to equal VA_BITS (== VA_BITS_MIN). So get rid of the variable entirely in that case. While at it, move the assignment out of the asm entry code - it has no need to be there. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20220624150651.1358849-3-ardb@kernel.org Signed-off-by: Will Deacon <will@kernel.org>
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Ard Biesheuvel
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Will Deacon
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Jun 24, 2022
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