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On PowerPC, the memory reserved for the crashkernel can contain components like RTAS, TCE, OPAL, etc., which should be avoided when loading kexec segments into crashkernel memory. Due to these special components, PowerPC has its own set of APIs to locate holes in the crashkernel memory for loading kexec segments for kdump. However, for loading kexec segments in the kexec case, PowerPC already uses generic APIs to locate holes. The previous patch in this series, titled "crash: Let arch decide usable memory range in reserved area," introduced arch-specific hook to handle such special regions in the crashkernel area. So, switch PowerPC to use the generic APIs to locate memory holes for kdump and remove the redundant PowerPC-specific APIs. Link: https://lkml.kernel.org/r/20250131113830.925179-5-sourabhjain@linux.ibm.com Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com> Cc: Baoquan he <bhe@redhat.com> Cc: Hari Bathini <hbathini@linux.ibm.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Mahesh Salgaonkar <mahesh@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>