Currently edu device doesn't support live migration. Part of PCI
configuration information would be lost after migration.
PCI device state in source VM:
Bus 0, device 3, function 0:
Class 0255: PCI device 1234:11e8
PCI subsystem 1af4:1100
IRQ 11, pin A
BAR0: 32 bit memory at 0xfea00000 [0xfeafffff].
id ""
PCI device state in destination VM:
Bus 0, device 3, function 0:
Class 0255: PCI device 1234:11e8
PCI subsystem 1af4:1100
IRQ 0, pin A
BAR0: 32 bit memory at 0xffffffffffffffff [0x000ffffe].
id ""
Add VMState for edu device to support migration.
Signed-off-by: Gao Chao <chao.gao@intel.com>
Signed-off-by: Zeng Guang <guang.zeng@intel.com>
Reviewed-by: Wei Wang <wei.w.wang@intel.com>
---
hw/misc/edu.c | 26 +++++++++++++++++++++++++-
1 file changed, 25 insertions(+), 1 deletion(-)
diff --git a/hw/misc/edu.c b/hw/misc/edu.c
index ec617e63f3..5f3fecac41 100644
--- a/hw/misc/edu.c
+++ b/hw/misc/edu.c
@@ -27,6 +27,7 @@
#include "hw/pci/pci.h"
#include "hw/hw.h"
#include "hw/pci/msi.h"
+#include "migration/vmstate.h"
#include "qemu/timer.h"
#include "qemu/main-loop.h" /* iothread mutex */
#include "qemu/module.h"
@@ -70,7 +71,7 @@ typedef struct {
dma_addr_t cmd;
} dma;
QEMUTimer dma_timer;
- char dma_buf[DMA_SIZE];
+ uint8_t dma_buf[DMA_SIZE];
uint64_t dma_mask;
} EduState;
@@ -405,6 +406,28 @@ static void edu_instance_init(Object *obj)
&edu->dma_mask, OBJ_PROP_FLAG_READWRITE);
}
+static const VMStateDescription vmstate_edu = {
+ .name = "edu",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_PCI_DEVICE(pdev, EduState),
+ VMSTATE_BOOL(stopping, EduState),
+ VMSTATE_UINT32(addr4, EduState),
+ VMSTATE_UINT32(fact, EduState),
+ VMSTATE_UINT32(status, EduState),
+ VMSTATE_UINT32(irq_status, EduState),
+ VMSTATE_UINT64(dma.src, EduState),
+ VMSTATE_UINT64(dma.dst, EduState),
+ VMSTATE_UINT64(dma.cnt, EduState),
+ VMSTATE_UINT64(dma.cmd, EduState),
+ VMSTATE_TIMER(dma_timer, EduState),
+ VMSTATE_BUFFER(dma_buf, EduState),
+ VMSTATE_UINT64(dma_mask, EduState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
static void edu_class_init(ObjectClass *class, void *data)
{
DeviceClass *dc = DEVICE_CLASS(class);
@@ -415,6 +438,7 @@ static void edu_class_init(ObjectClass *class, void *data)
k->vendor_id = PCI_VENDOR_ID_QEMU;
k->device_id = 0x11e8;
k->revision = 0x10;
+ dc->vmsd = &vmstate_edu;
k->class_id = PCI_CLASS_OTHERS;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
}
--
2.17.1