arm64: Handle 4 level page table for swapper
At the moment, we only support maximum of 3-level page table for swapper. With 48bit VA, 64K has only 3 levels and 4K uses section mapping. Add support for 4-level page table for swapper, needed by 16K pages. Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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