For the s390x architecture the sysfs core_id alone is not unique. As a
result it can happen that libvirt thinks there are less host CPUs available
than really present.
Currently, a logical CPU is equivalent to a core for s390x. We therefore
produce a fake core id from the CPU number.
Signed-off-by: Viktor Mihajlovski <mihajlov@xxxxxxxxxxxxxxxxxx>
---
src/nodeinfo.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/src/nodeinfo.c b/src/nodeinfo.c
index 7eb5ae5..819f954 100644
--- a/src/nodeinfo.c
+++ b/src/nodeinfo.c
@@ -355,7 +355,13 @@ int linuxNodeInfoCPUPopulate(FILE *cpuinfo,
nodeinfo->cpus++;
/* Parse core */
+# if defined(__s390__) || \
+ defined(__s390x__)
+ /* logical cpu is equivalent to a core on s390 */
+ core = cpu;
+# else
core = virNodeGetCpuValue(sysfs_cpudir, cpu, "topology/core_id", false);
+# endif
if (!CPU_ISSET(core, &core_mask)) {
CPU_SET(core, &core_mask);
nodeinfo->cores++;
--
1.7.0.4
--
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