Name

push_node_boundaries — Push node boundaries to at least the requested boundary

Synopsis

void push_node_boundaries (unsigned int nid,
 unsigned long start_pfn,
 unsigned long end_pfn);
 

Arguments

nid

The nid of the node to push the boundary for

start_pfn

The start pfn of the node

end_pfn

The end pfn of the node

Description

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.