[PATCH v6 07/10] tests/qtest/libquos/pci: Add migration fixup helper for pci devices

[Jishnu Warrier <jishnuvw@linux.ibm.com>]

From: Nicholas Piggin <npiggin@gmail.com>

Migration tests can create new QPCI devices for the destination
machine which may need to take on some state of the source machine
after destination is complete.

Add a migration fixup helper and call it from ahci migration tests.
This is currently a noop and will be used subsequently.

Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 tests/qtest/ahci-test.c  | 1 +
 tests/qtest/libqos/pci.c | 4 ++++
 tests/qtest/libqos/pci.h | 1 +
 3 files changed, 6 insertions(+)

diff --git a/tests/qtest/ahci-test.c b/tests/qtest/ahci-test.c
index 43b5a38b..1c45d5f3 100644
--- a/tests/qtest/ahci-test.c
+++ b/tests/qtest/ahci-test.c
@@ -137,6 +137,7 @@ static void ahci_migrate(AHCIQState *from, AHCIQState *to, const char *uri)
     memcpy(to, from, sizeof(AHCIQState));
     to->parent = tmp;
     to->dev = dev;
+    qpci_migrate_fixup(to->dev, from->dev);
 
     tmp = from->parent;
     dev = from->dev;
diff --git a/tests/qtest/libqos/pci.c b/tests/qtest/libqos/pci.c
index 76b13ade..cda3c56c 100644
--- a/tests/qtest/libqos/pci.c
+++ b/tests/qtest/libqos/pci.c
@@ -625,6 +625,10 @@ QPCIBar qpci_legacy_iomap(QPCIDevice *dev, uint16_t addr)
     return bar;
 }
 
+void qpci_migrate_fixup(QPCIDevice *to, QPCIDevice *from)
+{
+}
+
 void add_qpci_address(QOSGraphEdgeOptions *opts, QPCIAddress *addr)
 {
     g_assert(addr);
diff --git a/tests/qtest/libqos/pci.h b/tests/qtest/libqos/pci.h
index ef40a691..19f1dd13 100644
--- a/tests/qtest/libqos/pci.h
+++ b/tests/qtest/libqos/pci.h
@@ -120,6 +120,7 @@ void qpci_memwrite(QPCIDevice *bus, QPCIBar token, uint64_t off,
                    const void *buf, size_t len);
 QPCIBar qpci_iomap(QPCIDevice *dev, int barno, uint64_t *sizeptr);
 void qpci_iounmap(QPCIDevice *dev, QPCIBar addr);
+void qpci_migrate_fixup(QPCIDevice *to, QPCIDevice *from);
 QPCIBar qpci_legacy_iomap(QPCIDevice *dev, uint16_t addr);
 
 void qpci_unplug_acpi_device_test(QTestState *qs, const char *id, uint8_t slot);
-- 
2.55.0