push_node_boundaries — Push node boundaries to at least the requested boundary
void __init push_node_boundaries ( | unsigned int | nid, |
| unsigned long | start_pfn, | |
| unsigned long | end_pfn); |
nidThe nid of the node to push the boundary for
start_pfnThe start pfn of the node
end_pfnThe end pfn of the node
In reserve-based hot-add, mem_map is allocated that is unused until hotadd time. Specifically, on x86_64, SRAT will report ranges that can potentially be hotplugged even though no physical memory exists. This function allows an arch to push out the node boundaries so mem_map is allocated that can be used later.