arm64: hugetlb: Cleanup setup_hugepagesz
Replace a lot of if statements with switch and case labels to make it much clearer which huge page sizes are supported. Also, we prevent PUD_SIZE from being used on systems not running with 4KB PAGE_SIZE. Before if one supplied PUD_SIZE in these circumstances, then unusuable huge page sizes would be in use. Fixes: 084bd298 ("ARM64: mm: HugeTLB support.") Cc: David Woods <dwoods@mellanox.com> Signed-off-by: Steve Capper <steve.capper@arm.com> Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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