3 files changed, 15 insertions, 1 deletions

diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index ccbeeca1de..47cebaf3ac 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -847,6 +847,7 @@ int spapr_hpt_shift_for_ramsize(uint64_t ramsize);
 int spapr_reallocate_hpt(SpaprMachineState *spapr, int shift, Error **errp);
 void spapr_clear_pending_events(SpaprMachineState *spapr);
 void spapr_clear_pending_hotplug_events(SpaprMachineState *spapr);
+void spapr_memory_unplug_rollback(SpaprMachineState *spapr, DeviceState *dev);
 int spapr_max_server_number(SpaprMachineState *spapr);
 void spapr_store_hpte(PowerPCCPU *cpu, hwaddr ptex,
                       uint64_t pte0, uint64_t pte1);
diff --git a/include/hw/ppc/spapr_drc.h b/include/hw/ppc/spapr_drc.h
index 8982927d5c..26599c385a 100644
--- a/include/hw/ppc/spapr_drc.h
+++ b/include/hw/ppc/spapr_drc.h
@@ -187,6 +187,8 @@ typedef struct SpaprDrc {
     bool unplug_requested;
     void *fdt;
     int fdt_start_offset;
+
+    QEMUTimer *unplug_timeout_timer;
 } SpaprDrc;
 
 struct SpaprMachineState;
@@ -209,6 +211,8 @@ typedef struct SpaprDrcClass {
 
     int (*dt_populate)(SpaprDrc *drc, struct SpaprMachineState *spapr,
                        void *fdt, int *fdt_start_offset, Error **errp);
+
+    int unplug_timeout_seconds;
 } SpaprDrcClass;
 
 typedef struct SpaprDrcPhysical {
@@ -243,7 +247,8 @@ int spapr_dt_drc(void *fdt, int offset, Object *owner, uint32_t drc_type_mask);
  * beforehand (eg. check drc->dev at pre-plug).
  */
 void spapr_drc_attach(SpaprDrc *drc, DeviceState *d);
-void spapr_drc_detach(SpaprDrc *drc);
+void spapr_drc_unplug_request(SpaprDrc *drc);
+int spapr_drc_unplug_timeout_remaining_sec(SpaprDrc *drc);
 
 /*
  * Reset all DRCs, causing pending hot-plug/unplug requests to complete.
diff --git a/include/qemu/timer.h b/include/qemu/timer.h
index 1678238384..5e76e3f8c2 100644
--- a/include/qemu/timer.h
+++ b/include/qemu/timer.h
@@ -795,6 +795,14 @@ static inline int64_t get_max_clock_jump(void)
     return 60 * NANOSECONDS_PER_SECOND;
 }
 
+/**
+ * timer_deadline_ms:
+ *
+ * Returns the remaining miliseconds for @timer to expire, or zero
+ * if the timer is no longer pending.
+ */
+int64_t timer_deadline_ms(QEMUTimer *timer);
+
 /*
  * Low level clock functions
  */