OPL_MC_MEMBOARD_SHIFT
ssize = (1ull << OPL_MC_MEMBOARD_SHIFT);
mem_node_pfn_shift = OPL_MC_MEMBOARD_SHIFT - MMU_PAGESHIFT;
ssize = (1ull << OPL_MC_MEMBOARD_SHIFT);
memnode = mem_range.addr >> OPL_MC_MEMBOARD_SHIFT;