diff options
| -rw-r--r-- | arch/powerpc/mm/numa.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 4a87ccb8970f..f8b1da776712 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -1164,17 +1164,33 @@ int hot_add_scn_to_nid(unsigned long scn_addr) static u64 hot_add_drconf_memory_max(void) { struct device_node *memory = NULL; + struct device_node *dn = NULL; unsigned int drconf_cell_cnt = 0; u64 lmb_size = 0; const __be32 *dm = NULL; + const __be64 *lrdr = NULL; + struct of_drconf_cell drmem; + + dn = of_find_node_by_path("/rtas"); + if (dn) { + lrdr = of_get_property(dn, "ibm,lrdr-capacity", NULL); + of_node_put(dn); + if (lrdr) + return be64_to_cpup(lrdr); + } memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory"); if (memory) { drconf_cell_cnt = of_get_drconf_memory(memory, &dm); lmb_size = of_get_lmb_size(memory); + + /* Advance to the last cell, each cell has 6 32 bit integers */ + dm += (drconf_cell_cnt - 1) * 6; + read_drconf_cell(&drmem, &dm); of_node_put(memory); + return drmem.base_addr + lmb_size; } - return lmb_size * drconf_cell_cnt; + return 0; } /* |