[RESEND PATCH v8 5/8] memblock: introduce MEMBLOCK_NODUMP flag

[sashiko-bot at kernel.org]

> From: Wandun Chen <chenwandun at lixiang.com>
> 
> Add MEMBLOCK_NODUMP to mark regions that should be excluded from
> kdump vmcores.
> 
> The flag is meant for reserved memory that carries no data useful for
> crash analysis. Reusable reserved regions such as CMA may hold useful
> data, so these regions must not be marked MEMBLOCK_NODUMP. Subsequent
> patches wire this up for /reserved-memory entries.
> 
> Suggested-by: Rob Herring <robh at kernel.org>
> Signed-off-by: Wandun Chen <chenwandun at lixiang.com>

Sashiko has reviewed this patch and found no issues. It looks great!

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