In the current code, the kernel command-line parameter mem= and memmap= can not work well on MIPS, this patchset refactors the related code to fix them. For kdump on MIPS, if the users want to limit the memory region for the capture kernel to avoid corrupting the memory image of the panic kernel, use the parameter memmap=limit@base is the proper way, I will submit a patch to use memmap=limit@base for kexec-tools after this patchset is applied. v2: Add some new patches to support memmap=limit@base Tiezhu Yang (4): MIPS: Refactor early_parse_mem() to fix mem= parameter memblock: Introduce memblock_mem_range_remove_map() MIPS: Refactor early_parse_memmap() to fix memmap= parameter MIPS: Remove not used variable usermem arch/mips/kernel/setup.c | 71 ++++++++++++------------------------------------ include/linux/memblock.h | 1 + mm/memblock.c | 9 ++++-- 3 files changed, 25 insertions(+), 56 deletions(-) -- 2.1.0