[PATCH v2 3/5] hw/intc: Support migration of aclint device

[Atish Patra]

mtimecmp is part of ACLINT device now. This needs to preserved across
migration.

Signed-off-by: Atish Patra <atishp@rivosinc.com>
---
 hw/intc/riscv_aclint.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/hw/intc/riscv_aclint.c b/hw/intc/riscv_aclint.c
index 1bddb99bda47..0bbc5e65737e 100644
--- a/hw/intc/riscv_aclint.c
+++ b/hw/intc/riscv_aclint.c
@@ -32,6 +32,7 @@
 #include "hw/intc/riscv_aclint.h"
 #include "qemu/timer.h"
 #include "hw/irq.h"
+#include "migration/vmstate.h"
 
 typedef struct riscv_aclint_mtimer_callback {
     RISCVAclintMTimerState *s;
@@ -311,6 +312,18 @@ static void riscv_aclint_mtimer_reset_enter(Object *obj, 
ResetType type)
     riscv_aclint_mtimer_write(mtimer, mtimer->time_base, 0, 8);
 }
 
+static const VMStateDescription vmstate_riscv_mtimer = {
+    .name = "riscv_mtimer",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+            VMSTATE_VARRAY_UINT64(timecmp, RISCVAclintMTimerState,
+                                  num_harts, 0,
+                                  vmstate_info_uint64, uint64_t),
+            VMSTATE_END_OF_LIST()
+        }
+};
+
 static void riscv_aclint_mtimer_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -318,6 +331,7 @@ static void riscv_aclint_mtimer_class_init(ObjectClass 
*klass, void *data)
     device_class_set_props(dc, riscv_aclint_mtimer_properties);
     ResettableClass *rc = RESETTABLE_CLASS(klass);
     rc->phases.enter = riscv_aclint_mtimer_reset_enter;
+    dc->vmsd = &vmstate_riscv_mtimer;
 }
 
 static const TypeInfo riscv_aclint_mtimer_info = {
-- 
2.25.1