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For s390 the page table mapping for the crashkernel memory is removed to protect the pre-loaded kdump kernel and ramdisk. Because the crashkernel memory is not included in the page tables for suspend/resume it is not included in the suspend image. Therefore after resume the resumed system does no longer contain the pre-loaded kdump kernel and when kdump is triggered it fails. This patch adds a PM notifier that creates the page tables before suspend is done and removes them for resume. This ensures that the kdump kernel is included in the suspend image. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>