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Subject[PATCH V3 3/3] x86/numa_emulation: restructures numa_nodes_parsed from emulated nodes
Date
By emulating numa, it may contains more or less nodes than physical nodes.
In numa_emulation(), numa_meminfo/numa_distance/__apicid_to_node is
restructured according to emulated nodes, except numa_nodes_parsed.

This patch restructures numa_nodes_parsed from emulated nodes.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: David Rientjes <rientjes@google.com>
---
arch/x86/mm/numa_emulation.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/arch/x86/mm/numa_emulation.c b/arch/x86/mm/numa_emulation.c
index 80904ede2e7f..d805162e6045 100644
--- a/arch/x86/mm/numa_emulation.c
+++ b/arch/x86/mm/numa_emulation.c
@@ -395,6 +395,13 @@ void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt)
/* commit */
*numa_meminfo = ei;

+ /* Make sure numa_nodes_parsed only contains emulated nodes */
+ nodes_clear(numa_nodes_parsed);
+ for (i = 0; i < ARRAY_SIZE(ei.blk); i++)
+ if (ei.blk[i].start != ei.blk[i].end &&
+ ei.blk[i].nid != NUMA_NO_NODE)
+ node_set(ei.blk[i].nid, numa_nodes_parsed);
+
/*
* Transform __apicid_to_node table to use emulated nids by
* reverse-mapping phys_nid. The maps should always exist but fall
--
2.11.0
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