This problem may only occur on NUMA platforms. When machine start with the "mem=" parameter on Loongson64, it cannot boot. When parsing the "mem=" parameter, first remove all RAM, and then add memory through memblock_add(), which causes the newly added memory to be located on MAX_NUMNODES. The solution is to add the current "mem=" parameter range to the memory area of the corresponding node, instead of adding all of it to the MAX_NUMNODES node area. Get the node number corresponding to the "mem=" parameter range through pa_to_nid(), and then add it to the corresponding node through memblock_add_node(). Signed-off-by: Jinyang He <hejinyang@xxxxxxxxxxx> Signed-off-by: Youling Tang <tangyouling@xxxxxxxxxxx> --- v2: - Include the mmzone.h header file, to solve the "error: implicit declaration of function'pa_to_nid'" compilation error. arch/mips/kernel/setup.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index 279be01..9338520 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -37,6 +37,7 @@ #include <asm/cdmm.h> #include <asm/cpu.h> #include <asm/debug.h> +#include <asm/mmzone.h> #include <asm/sections.h> #include <asm/setup.h> #include <asm/smp-ops.h> @@ -359,7 +360,7 @@ static int __init early_parse_mem(char *p) if (*p == '@') start = memparse(p + 1, &p); - memblock_add(start, size); + memblock_add_node(start, size, pa_to_nid(start)); return 0; } -- 2.1.0
