Subject: [PATCH] makedumpfile: s390x: Auto-detect the correct MAX_PHYSMEM_BITS used in vmcore being analyzed. From: Mahesh Salgaonkar <mahesh(a)linux.vnet.ibm.com&gt; So far s390x kernel was using 42 bits for MAX_PHYSMEM_BITS that use to support maximum of 4TB of memory. In order to support bigger systems, the newer s390x kernel will now use 46 bits for MAX_PHYSMEM_BITS to support maximum of 64TB of memory. This patch auto-detects the correct value to use for MAX_PHYSMEM_BITS by examining the mem_section array size from the vmcore being analyzed. Signed-off-by: Mahesh Salgaonkar <mahesh(a)linux.vnet.ibm.com&gt; ---