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-rw-r--r--hw/ppc/spapr.c4
-rw-r--r--hw/ppc/spapr_drc.c20
2 files changed, 19 insertions, 5 deletions
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 8aecea3dd1..44c26e4be8 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1524,16 +1524,16 @@ static void htab_save_first_pass(QEMUFile *f, sPAPRMachineState *spapr,
         /* Consume invalid HPTEs */
         while ((index < htabslots)
                && !HPTE_VALID(HPTE(spapr->htab, index))) {
-            index++;
             CLEAN_HPTE(HPTE(spapr->htab, index));
+            index++;
         }
 
         /* Consume valid HPTEs */
         chunkstart = index;
         while ((index < htabslots) && (index - chunkstart < USHRT_MAX)
                && HPTE_VALID(HPTE(spapr->htab, index))) {
-            index++;
             CLEAN_HPTE(HPTE(spapr->htab, index));
+            index++;
         }
 
         if (index > chunkstart) {
diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c
index 150f6bf2c7..a1cdc875b1 100644
--- a/hw/ppc/spapr_drc.c
+++ b/hw/ppc/spapr_drc.c
@@ -135,6 +135,17 @@ static uint32_t set_allocation_state(sPAPRDRConnector *drc,
         if (!drc->dev) {
             return RTAS_OUT_NO_SUCH_INDICATOR;
         }
+        if (drc->awaiting_release && drc->awaiting_allocation) {
+            /* kernel is acknowledging a previous hotplug event
+             * while we are already removing it.
+             * it's safe to ignore awaiting_allocation here since we know the
+             * situation is predicated on the guest either already having done
+             * so (boot-time hotplug), or never being able to acquire in the
+             * first place (hotplug followed by immediate unplug).
+             */
+            drc->awaiting_allocation_skippable = true;
+            return RTAS_OUT_NO_SUCH_INDICATOR;
+        }
     }
 
     if (drc->type != SPAPR_DR_CONNECTOR_TYPE_PCI) {
@@ -436,9 +447,11 @@ static void detach(sPAPRDRConnector *drc, DeviceState *d,
     }
 
     if (drc->awaiting_allocation) {
-        drc->awaiting_release = true;
-        trace_spapr_drc_awaiting_allocation(get_index(drc));
-        return;
+        if (!drc->awaiting_allocation_skippable) {
+            drc->awaiting_release = true;
+            trace_spapr_drc_awaiting_allocation(get_index(drc));
+            return;
+        }
     }
 
     drc->indicator_state = SPAPR_DR_INDICATOR_STATE_INACTIVE;
@@ -448,6 +461,7 @@ static void detach(sPAPRDRConnector *drc, DeviceState *d,
     }
 
     drc->awaiting_release = false;
+    drc->awaiting_allocation_skippable = false;
     g_free(drc->fdt);
     drc->fdt = NULL;
     drc->fdt_start_offset = 0;