From: Daniel Henrique Barboza <danie...@linux.vnet.ibm.com> This patch makes a small fix in 'spapr_drc_needed' to change how we detect if a DRC has a device attached. Previously it used dr_entity_sense for this, which works for physical DRCs.
However, for logical DRCs, it didn't cover the case where a logical DRC has a drc->dev but the state is LOGICAL_UNUSABLE (e.g. a hotplugged CPU before CAS). In this case, the dr_entity_sense of this DRC returns UNUSABLE and the code was considering that there were no dev attached, making spapr_drc_needed return 'false' when in fact we would like to migrate the DRC. Changing it to check for drc->dev instead works for all DRC types. Signed-off-by: Daniel Henrique Barboza <danie...@linux.vnet.ibm.com> Signed-off-by: David Gibson <da...@gibson.dropbear.id.au> --- hw/ppc/spapr_drc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c index 605697d8bd..031ba7c387 100644 --- a/hw/ppc/spapr_drc.c +++ b/hw/ppc/spapr_drc.c @@ -464,10 +464,9 @@ static bool spapr_drc_needed(void *opaque) { sPAPRDRConnector *drc = (sPAPRDRConnector *)opaque; sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); - sPAPRDREntitySense value = drck->dr_entity_sense(drc); /* If no dev is plugged in there is no need to migrate the DRC state */ - if (value != SPAPR_DR_ENTITY_SENSE_PRESENT) { + if (!drc->dev) { return false; } -- 2.13.5