arm64: dump: Make the page table dumping seq_file optional
The page table dumping code always assumes it will be dumping to a seq_file to userspace. Future code will be taking advantage of the page table dumping code but will not need the seq_file. Make the seq_file optional for these cases. Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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