[PATCH] Fix bug in NUMA node setup - don't create SRAT if NUMA not present.

[Kevin O'Connor]

Make sure to check for the case where there are no NUMA nodes passed
in from QEMU.

Signed-off-by: Kevin O'Connor 
---
 src/acpi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/acpi.c b/src/acpi.c
index 98a5d40..119d1c1 100644
--- a/src/acpi.c
+++ b/src/acpi.c
@@ -655,6 +655,8 @@ build_srat(void)
         return NULL;
     int max_cpu = romfile_loadint("etc/max-cpus", 0);
     int nb_numa_nodes = (filesize / sizeof(u64)) - max_cpu;
+    if (!nb_numa_nodes)
+        return NULL;

struct system_resource_affinity_table *srat;
     int srat_size = sizeof(*srat) +