maillist inclusion
category: feature
bugzilla: 47954
Reference: https://lkml.org/lkml/2021/1/30/53

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We make the functions reserve_crashkernel[_low]() as generic for
x86 and arm64. Since reserve_crashkernel[_low]() implementations
are quite similar on other architectures as well, we can have more
users of this later.

So have CONFIG_ARCH_WANT_RESERVE_CRASH_KERNEL in arch/Kconfig and
select this by X86 and ARM64.
Suggested-by: NMike Rapoport <rppt@kernel.org>
Signed-off-by: NChen Zhou <chenzhou10@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>