diff --git a/tests/e1000e-test.c b/tests/e1000e-test.c
index d497b08..3979b20 100644
--- a/tests/e1000e-test.c
+++ b/tests/e1000e-test.c
@@ -390,7 +390,7 @@ static void data_test_init(e1000e_device *d)
     qtest_start(cmdline);
     g_free(cmdline);
 
-    test_bus = qpci_init_pc();
+    test_bus = qpci_init_pc(NULL);
     g_assert_nonnull(test_bus);
 
     test_alloc = pc_alloc_init();
diff --git a/tests/i440fx-test.c b/tests/i440fx-test.c
index 3542ad1..da2d5a5 100644
--- a/tests/i440fx-test.c
+++ b/tests/i440fx-test.c
@@ -38,7 +38,7 @@ static QPCIBus *test_start_get_bus(const TestData *s)
     cmdline = g_strdup_printf("-smp %d", s->num_cpus);
     qtest_start(cmdline);
     g_free(cmdline);
-    return qpci_init_pc();
+    return qpci_init_pc(NULL);
 }
 
 static void test_i440fx_defaults(gconstpointer opaque)
diff --git a/tests/ide-test.c b/tests/ide-test.c
index 1e51af2..a8a4081 100644
--- a/tests/ide-test.c
+++ b/tests/ide-test.c
@@ -143,7 +143,7 @@ static QPCIDevice *get_pci_device(uint16_t *bmdma_base)
     uint16_t vendor_id, device_id;
 
     if (!pcibus) {
-        pcibus = qpci_init_pc();
+        pcibus = qpci_init_pc(NULL);
     }
 
     /* Find PCI device and verify it's the right one */
diff --git a/tests/ivshmem-test.c b/tests/ivshmem-test.c
index 0957ee7..f36bfe7 100644
--- a/tests/ivshmem-test.c
+++ b/tests/ivshmem-test.c
@@ -105,7 +105,7 @@ static void setup_vm_cmd(IVState *s, const char *cmd, bool msix)
     uint64_t barsize;
 
     s->qtest = qtest_start(cmd);
-    s->pcibus = qpci_init_pc();
+    s->pcibus = qpci_init_pc(NULL);
     s->dev = get_device(s->pcibus);
 
     s->reg_base = qpci_iomap(s->dev, 0, &barsize);
diff --git a/tests/libqos/ahci.c b/tests/libqos/ahci.c
index f3be550..716ab79 100644
--- a/tests/libqos/ahci.c
+++ b/tests/libqos/ahci.c
@@ -128,7 +128,7 @@ QPCIDevice *get_ahci_device(uint32_t *fingerprint)
     uint32_t ahci_fingerprint;
     QPCIBus *pcibus;
 
-    pcibus = qpci_init_pc();
+    pcibus = qpci_init_pc(NULL);
 
     /* Find the AHCI PCI device and verify it's the right one. */
     ahci = qpci_device_find(pcibus, QPCI_DEVFN(0x1F, 0x02));
diff --git a/tests/libqos/libqos-pc.c b/tests/libqos/libqos-pc.c
index df34092..aa17c98 100644
--- a/tests/libqos/libqos-pc.c
+++ b/tests/libqos/libqos-pc.c
@@ -1,10 +1,13 @@
 #include "qemu/osdep.h"
 #include "libqos/libqos-pc.h"
 #include "libqos/malloc-pc.h"
+#include "libqos/pci-pc.h"
 
 static QOSOps qos_ops = {
     .init_allocator = pc_alloc_init_flags,
-    .uninit_allocator = pc_alloc_uninit
+    .uninit_allocator = pc_alloc_uninit,
+    .qpci_init = qpci_init_pc,
+    .qpci_free = qpci_free_pc,
 };
 
 QOSState *qtest_pc_vboot(const char *cmdline_fmt, va_list ap)
diff --git a/tests/libqos/libqos-spapr.c b/tests/libqos/libqos-spapr.c
index f19408b..125c6b3 100644
--- a/tests/libqos/libqos-spapr.c
+++ b/tests/libqos/libqos-spapr.c
@@ -1,10 +1,13 @@
 #include "qemu/osdep.h"
 #include "libqos/libqos-spapr.h"
 #include "libqos/malloc-spapr.h"
+#include "libqos/pci-spapr.h"
 
 static QOSOps qos_ops = {
     .init_allocator = spapr_alloc_init_flags,
-    .uninit_allocator = spapr_alloc_uninit
+    .uninit_allocator = spapr_alloc_uninit,
+    .qpci_init = qpci_init_spapr,
+    .qpci_free = qpci_free_spapr
 };
 
 QOSState *qtest_spapr_vboot(const char *cmdline_fmt, va_list ap)
diff --git a/tests/libqos/libqos.c b/tests/libqos/libqos.c
index a852dc5..332d60e 100644
--- a/tests/libqos/libqos.c
+++ b/tests/libqos/libqos.c
@@ -20,8 +20,13 @@ QOSState *qtest_vboot(QOSOps *ops, const char *cmdline_fmt, va_list ap)
     cmdline = g_strdup_vprintf(cmdline_fmt, ap);
     qs->qts = qtest_start(cmdline);
     qs->ops = ops;
-    if (ops && ops->init_allocator) {
-        qs->alloc = ops->init_allocator(ALLOC_NO_FLAGS);
+    if (ops) {
+        if (ops->init_allocator) {
+            qs->alloc = ops->init_allocator(ALLOC_NO_FLAGS);
+        }
+        if (ops->qpci_init && qs->alloc) {
+            qs->pcibus = ops->qpci_init(qs->alloc);
+        }
     }
 
     g_free(cmdline);
@@ -49,9 +54,15 @@ QOSState *qtest_boot(QOSOps *ops, const char *cmdline_fmt, ...)
  */
 void qtest_shutdown(QOSState *qs)
 {
-    if (qs->alloc && qs->ops && qs->ops->uninit_allocator) {
-        qs->ops->uninit_allocator(qs->alloc);
-        qs->alloc = NULL;
+    if (qs->ops) {
+        if (qs->alloc && qs->ops->uninit_allocator) {
+            qs->ops->uninit_allocator(qs->alloc);
+            qs->alloc = NULL;
+        }
+        if (qs->pcibus && qs->ops->qpci_free) {
+            qs->ops->qpci_free(qs->pcibus);
+            qs->pcibus = NULL;
+        }
     }
     qtest_quit(qs->qts);
     g_free(qs);
diff --git a/tests/libqos/libqos.h b/tests/libqos/libqos.h
index 604980d..a9f6990 100644
--- a/tests/libqos/libqos.h
+++ b/tests/libqos/libqos.h
@@ -8,11 +8,14 @@
 typedef struct QOSOps {
     QGuestAllocator *(*init_allocator)(QAllocOpts);
     void (*uninit_allocator)(QGuestAllocator *);
+    QPCIBus *(*qpci_init)(QGuestAllocator *alloc);
+    void (*qpci_free)(QPCIBus *bus);
 } QOSOps;
 
 typedef struct QOSState {
     QTestState *qts;
     QGuestAllocator *alloc;
+    QPCIBus *pcibus;
     QOSOps *ops;
 } QOSState;
 
diff --git a/tests/libqos/pci-pc.c b/tests/libqos/pci-pc.c
index 82066b8..9600ed6 100644
--- a/tests/libqos/pci-pc.c
+++ b/tests/libqos/pci-pc.c
@@ -212,7 +212,7 @@ static void qpci_pc_iounmap(QPCIBus *bus, void *data)
     /* FIXME */
 }
 
-QPCIBus *qpci_init_pc(void)
+QPCIBus *qpci_init_pc(QGuestAllocator *alloc)
 {
     QPCIBusPC *ret;
 
diff --git a/tests/libqos/pci-pc.h b/tests/libqos/pci-pc.h
index 2621179..9479b51 100644
--- a/tests/libqos/pci-pc.h
+++ b/tests/libqos/pci-pc.h
@@ -14,8 +14,9 @@
 #define LIBQOS_PCI_PC_H
 
 #include "libqos/pci.h"
+#include "libqos/malloc.h"
 
-QPCIBus *qpci_init_pc(void);
+QPCIBus *qpci_init_pc(QGuestAllocator *alloc);
 void     qpci_free_pc(QPCIBus *bus);
 
 #endif
diff --git a/tests/q35-test.c b/tests/q35-test.c
index 71538fc..763fe3d 100644
--- a/tests/q35-test.c
+++ b/tests/q35-test.c
@@ -42,7 +42,7 @@ static void test_smram_lock(void)
     QPCIDevice *pcidev;
     QDict *response;
 
-    pcibus = qpci_init_pc();
+    pcibus = qpci_init_pc(NULL);
     g_assert(pcibus != NULL);
 
     pcidev = qpci_device_find(pcibus, 0);
diff --git a/tests/rtl8139-test.c b/tests/rtl8139-test.c
index 13de7ee..c2f601a 100644
--- a/tests/rtl8139-test.c
+++ b/tests/rtl8139-test.c
@@ -35,7 +35,7 @@ static QPCIDevice *get_device(void)
 {
     QPCIDevice *dev;
 
-    pcibus = qpci_init_pc();
+    pcibus = qpci_init_pc(NULL);
     qpci_device_foreach(pcibus, 0x10ec, 0x8139, save_fn, &dev);
     g_assert(dev != NULL);
 
diff --git a/tests/tco-test.c b/tests/tco-test.c
index 0d13aa8..0d201b1 100644
--- a/tests/tco-test.c
+++ b/tests/tco-test.c
@@ -57,7 +57,7 @@ static void test_init(TestData *d)
     qtest_irq_intercept_in(qs, "ioapic");
     g_free(s);
 
-    bus = qpci_init_pc();
+    bus = qpci_init_pc(NULL);
     d->dev = qpci_device_find(bus, QPCI_DEVFN(0x1f, 0x00));
     g_assert(d->dev != NULL);
 
diff --git a/tests/usb-hcd-ehci-test.c b/tests/usb-hcd-ehci-test.c
index eb247ad..a4ceeaa 100644
--- a/tests/usb-hcd-ehci-test.c
+++ b/tests/usb-hcd-ehci-test.c
@@ -56,7 +56,7 @@ static void pci_init(void)
     if (pcibus) {
         return;
     }
-    pcibus = qpci_init_pc();
+    pcibus = qpci_init_pc(NULL);
     g_assert(pcibus != NULL);
 
     qusb_pci_init_one(pcibus, &uhci1, QPCI_DEVFN(0x1d, 0), 4);
diff --git a/tests/usb-hcd-uhci-test.c b/tests/usb-hcd-uhci-test.c
index 5cd59ad..c24063e 100644
--- a/tests/usb-hcd-uhci-test.c
+++ b/tests/usb-hcd-uhci-test.c
@@ -23,7 +23,7 @@ static void test_port(int port)
     struct qhc uhci;
 
     g_assert(port > 0);
-    pcibus = qpci_init_pc();
+    pcibus = qpci_init_pc(NULL);
     g_assert(pcibus != NULL);
     qusb_pci_init_one(pcibus, &uhci, QPCI_DEVFN(0x1d, 0), 4);
     uhci_port_test(&uhci, port - 1, UHCI_PORT_CCS);
diff --git a/tests/vhost-user-test.c b/tests/vhost-user-test.c
index b89a551..300308c 100644
--- a/tests/vhost-user-test.c
+++ b/tests/vhost-user-test.c
@@ -146,7 +146,7 @@ static void init_virtio_dev(TestServer *s)
     QVirtioPCIDevice *dev;
     uint32_t features;
 
-    bus = qpci_init_pc();
+    bus = qpci_init_pc(NULL);
     g_assert_nonnull(bus);
 
     dev = qvirtio_pci_device_find(bus, VIRTIO_ID_NET);
diff --git a/tests/virtio-9p-test.c b/tests/virtio-9p-test.c
index b8fb6cd..e8b2196 100644
--- a/tests/virtio-9p-test.c
+++ b/tests/virtio-9p-test.c
@@ -63,7 +63,7 @@ static QVirtIO9P *qvirtio_9p_pci_init(void)
 
     v9p = g_new0(QVirtIO9P, 1);
     v9p->alloc = pc_alloc_init();
-    v9p->bus = qpci_init_pc();
+    v9p->bus = qpci_init_pc(NULL);
 
     dev = qvirtio_pci_device_find(v9p->bus, VIRTIO_ID_9P);
     g_assert_nonnull(dev);
diff --git a/tests/virtio-blk-test.c b/tests/virtio-blk-test.c
index 811cf75..3c4fecc 100644
--- a/tests/virtio-blk-test.c
+++ b/tests/virtio-blk-test.c
@@ -75,7 +75,7 @@ static QPCIBus *pci_test_start(void)
     g_free(tmp_path);
     g_free(cmdline);
 
-    return qpci_init_pc();
+    return qpci_init_pc(NULL);
 }
 
 static void arm_test_start(void)
diff --git a/tests/virtio-net-test.c b/tests/virtio-net-test.c
index 361506f..a343a6b 100644
--- a/tests/virtio-net-test.c
+++ b/tests/virtio-net-test.c
@@ -62,7 +62,7 @@ static QPCIBus *pci_test_start(int socket)
     qtest_start(cmdline);
     g_free(cmdline);
 
-    return qpci_init_pc();
+    return qpci_init_pc(NULL);
 }
 
 static void driver_init(const QVirtioBus *bus, QVirtioDevice *dev)
diff --git a/tests/virtio-scsi-test.c b/tests/virtio-scsi-test.c
index f1489e6..79088bb 100644
--- a/tests/virtio-scsi-test.c
+++ b/tests/virtio-scsi-test.c
@@ -146,7 +146,7 @@ static QVirtIOSCSI *qvirtio_scsi_pci_init(int slot)
 
     vs = g_new0(QVirtIOSCSI, 1);
     vs->alloc = pc_alloc_init();
-    vs->bus = qpci_init_pc();
+    vs->bus = qpci_init_pc(NULL);
 
     dev = qvirtio_pci_device_find(vs->bus, VIRTIO_ID_SCSI);
     vs->dev = (QVirtioDevice *)dev;
