diff options
Diffstat (limited to 'hw/ppc/spapr_drc.c')
| -rw-r--r-- | hw/ppc/spapr_drc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c index 6e54fd4743..a0c44ee593 100644 --- a/hw/ppc/spapr_drc.c +++ b/hw/ppc/spapr_drc.c @@ -68,6 +68,23 @@ static uint32_t set_isolation_state(sPAPRDRConnector *drc, } } + /* + * Fail any requests to ISOLATE the LMB DRC if this LMB doesn't + * belong to a DIMM device that is marked for removal. + * + * Currently the guest userspace tool drmgr that drives the memory + * hotplug/unplug will just try to remove a set of 'removable' LMBs + * in response to a hot unplug request that is based on drc-count. + * If the LMB being removed doesn't belong to a DIMM device that is + * actually being unplugged, fail the isolation request here. + */ + if (drc->type == SPAPR_DR_CONNECTOR_TYPE_LMB) { + if ((state == SPAPR_DR_ISOLATION_STATE_ISOLATED) && + !drc->awaiting_release) { + return RTAS_OUT_HW_ERROR; + } + } + drc->isolation_state = state; if (drc->isolation_state == SPAPR_DR_ISOLATION_STATE_ISOLATED) { |