Currently, Using the fisrt node without memory on the machine makes
QEMU unhappy. With this example command line:
... \
-m 1024M,slots=4,maxmem=32G \
-numa node,nodeid=0 \
-numa node,mem=1024M,nodeid=1 \
-numa node,nodeid=2 \
-numa node,nodeid=3 \
Guest reports "No NUMA configuration found" and the NUMA topology is
wrong.
This is because when QEMU builds ACPI SRAT, it regards node0 as the
default node to deal with the memory hole(640K-1M). this means the
node0 must have some memory(>1M) firstly.
Add a check in parse_numa_opts to avoid this situation.
Signed-off-by: Dou Liyang <douly.f...@cn.fujitsu.com>
---
numa.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/numa.c b/numa.c
index e32af04..1d6f73f 100644
--- a/numa.c
+++ b/numa.c
@@ -464,6 +464,10 @@ void parse_numa_opts(MachineState *ms)
if (i == nb_numa_nodes) {
assert(mc->numa_auto_assign_ram);
mc->numa_auto_assign_ram(mc, numa_info, nb_numa_nodes, ram_size);
+ } else if (i != 0) {
+ error_report("The first NUMA node must have some memory"
+ " for building ACPI SART");
+ exit(1);
}
numa_total = 0;
--
2.5.5
