[Qemu-devel] [PULL 5/6] spapr: Prevent boot CPU core removal

[David Gibson]

From: Bharata B Rao <address@hidden>

Boot CPU is assumed to be always present in QEMU code. So
until that assumptions are gone, deny removal request.
In another words, QEMU won't support boot CPU core hot-unplug.

Signed-off-by: Bharata B Rao <address@hidden>
[dwg: Tweaked error message for clarity]
Signed-off-by: David Gibson <address@hidden>
---
 hw/ppc/spapr_cpu_core.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hw/ppc/spapr_cpu_core.c b/hw/ppc/spapr_cpu_core.c
index 5a132bf..ec81ee6 100644
--- a/hw/ppc/spapr_cpu_core.c
+++ b/hw/ppc/spapr_cpu_core.c
@@ -133,6 +133,11 @@ void spapr_core_unplug(HotplugHandler *hotplug_dev, 
DeviceState *dev,
     sPAPRDRConnectorClass *drck;
     Error *local_err = NULL;
 
+    if (index == 0) {
+        error_setg(errp, "Boot CPU core may not be unplugged");
+        return;
+    }
+
     g_assert(drc);
 
     drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
-- 
2.7.4