Re: [Crash-utility] ARM support for CONFIG_SPARSEMEM: (was Re: DDimage)

Thanks Dave, MW, Jan, I tried the patch which set machdep->section_size_bits and machdep->max_physmem_bits. When _SECTION_SIZE_BITS is 28, I got the following error, and failed in sparse_mem_init() PAGESIZE=4096 mem_section_size = 0 NR_SECTION_ROOTS = 0 NR_MEM_SECTIONS = 16 SECTIONS_PER_ROOT = 512 SECTION_ROOT_MASK = 0x1ff PAGES_PER_SECTION = 65536 crash: invalid size request: 0  type: "memory section root table" And when _SECTION_SIZE_BITS is 22, I got the following and sparse_mem_init() returns with out error. PAGESIZE=4096 mem_section_size = 8 NR_SECTION_ROOTS = 2 NR_MEM_SECTIONS = 1024 SECTIONS_PER_ROOT = 512 SECTION_ROOT_MASK = 0x1ff PAGES_PER_SECTION = 1024 ... But I got another error later, which I will report later.