Add support for memmap kernel parameters for ARM64. The three below modes are supported: memmap=exactmap Enable setting of an exact memory map, as specified by the user. memmap=nn[KMG]@ss[KMG] Force usage of a specific region of memory. memmap=nn[KMG]$ss[KMG] Region of memory to be reserved is from ss to ss+nn, the region must be in the range of existed memory, otherwise will be ignored. Please note that the above functions are for debugging purposes only. ChangeLog: - Some minor changes about description and code, no functional changes Ze Zuo (2): arm64: Add support for memmap kernel parameters arm64: Request resources for reserved memory via memmap .../admin-guide/kernel-parameters.txt | 14 ++- arch/arm64/kernel/setup.c | 32 +++++ arch/arm64/mm/init.c | 112 ++++++++++++++++++ arch/arm64/mm/internal.h | 12 ++ 4 files changed, 167 insertions(+), 3 deletions(-) create mode 100644 arch/arm64/mm/internal.h -- 2.25.1