arm64/mm: move runtime pgds to rodata
Now that deliberate writes to swapper_pg_dir are made via the fixmap, we can defend against errant writes by moving it into the rodata section. Since tramp_pg_dir and reserved_ttbr0 must be at a fixed offset from swapper_pg_dir, and are not modified at runtime, these are also moved into the rodata section. Likewise, idmap_pg_dir is not modified at runtime, and is moved into rodata. Signed-off-by: Jun Yao <yaojun8558363@gmail.com> Reviewed-by: James Morse <james.morse@arm.com> [Mark: simplify linker script, commit message] Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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