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Sanity check the physical memory regions during the merge of contiguous regions. Thus we can test the physical memory regions setup logic individually, including the error cases coming from the sanity checks. Reviewed-by: Andra Paraschiv <andraprs@amazon.com> Signed-off-by: Longpeng <longpeng2@huawei.com> Link: https://lore.kernel.org/r/20211107140918.2106-3-longpeng2@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>