memory_hotplug_max
u64 memory_hotplug_max(void);
usm_entries = ((memory_hotplug_max() / drmem_lmb_size()) +
window_size = roundup_pow_of_two(memory_hotplug_max() + (1ULL << 32));
for (addr = 0; addr < memory_hotplug_max(); addr += (1 << tce_order)) {
dma_mask > (memory_hotplug_max() + (1ULL << 32)) &&
const u64 max_memory = __rounddown_pow_of_two(memory_hotplug_max());