On Tue, 15 Jul 2025, Mark Cave-Ayland wrote:
Use QOM casts to convert between VFIOPCIDevice and PCIDevice instead of
accessing pdev directly.

Signed-off-by: Mark Cave-Ayland <mark.caveayl...@nutanix.com>
---
hw/vfio/pci.c | 202 ++++++++++++++++++++++++++++++--------------------
1 file changed, 120 insertions(+), 82 deletions(-)

diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 1093b28df7..fb9eb58da5 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -119,6 +119,7 @@ static void vfio_intx_mmap_enable(void *opaque)
static void vfio_intx_interrupt(void *opaque)
{
    VFIOPCIDevice *vdev = opaque;
+    PCIDevice *pdev = PCI_DEVICE(vdev);

Don't do that. Opaque data is already type checked when it is registered for the callback and cannot be changed so additional type checking here is just a performance hit without any advantage. It's OK to do it in less frequently called functions but don't add unnecessary casts to functions that can be called a lot.

Regards,
BALATON Zoltan

    if (!event_notifier_test_and_clear(&vdev->intx.interrupt)) {
        return;
@@ -127,7 +128,7 @@ static void vfio_intx_interrupt(void *opaque)
    trace_vfio_intx_interrupt(vdev->vbasedev.name, 'A' + vdev->intx.pin);

    vdev->intx.pending = true;
-    pci_irq_assert(&vdev->pdev);
+    pci_irq_assert(pdev);
    vfio_mmap_set_enabled(vdev, false);
    if (vdev->intx.mmap_timeout) {
        timer_mod(vdev->intx.mmap_timer,
@@ -138,6 +139,7 @@ static void vfio_intx_interrupt(void *opaque)
void vfio_pci_intx_eoi(VFIODevice *vbasedev)
{
    VFIOPCIDevice *vdev = container_of(vbasedev, VFIOPCIDevice, vbasedev);
+    PCIDevice *pdev = PCI_DEVICE(vdev);

    if (!vdev->intx.pending) {
        return;
@@ -146,13 +148,14 @@ void vfio_pci_intx_eoi(VFIODevice *vbasedev)
    trace_vfio_pci_intx_eoi(vbasedev->name);

    vdev->intx.pending = false;
-    pci_irq_deassert(&vdev->pdev);
+    pci_irq_deassert(pdev);
    vfio_device_irq_unmask(vbasedev, VFIO_PCI_INTX_IRQ_INDEX);
}

static bool vfio_intx_enable_kvm(VFIOPCIDevice *vdev, Error **errp)
{
#ifdef CONFIG_KVM
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    int irq_fd = event_notifier_get_fd(&vdev->intx.interrupt);

    if (vdev->no_kvm_intx || !kvm_irqfds_enabled() ||
@@ -165,7 +168,7 @@ static bool vfio_intx_enable_kvm(VFIOPCIDevice *vdev, Error 
**errp)
    qemu_set_fd_handler(irq_fd, NULL, NULL, vdev);
    vfio_device_irq_mask(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX);
    vdev->intx.pending = false;
-    pci_irq_deassert(&vdev->pdev);
+    pci_irq_deassert(pdev);

    /* Get an eventfd for resample/unmask */
    if (!vfio_notifier_init(vdev, &vdev->intx.unmask, "intx-unmask", 0, errp)) {
@@ -243,6 +246,8 @@ static bool vfio_cpr_intx_enable_kvm(VFIOPCIDevice *vdev, 
Error **errp)
static void vfio_intx_disable_kvm(VFIOPCIDevice *vdev)
{
#ifdef CONFIG_KVM
+    PCIDevice *pdev = PCI_DEVICE(vdev);
+
    if (!vdev->intx.kvm_accel) {
        return;
    }
@@ -253,7 +258,7 @@ static void vfio_intx_disable_kvm(VFIOPCIDevice *vdev)
     */
    vfio_device_irq_mask(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX);
    vdev->intx.pending = false;
-    pci_irq_deassert(&vdev->pdev);
+    pci_irq_deassert(pdev);

    /* Tell KVM to stop listening for an INTx irqfd */
    if (kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, &vdev->intx.interrupt,
@@ -309,7 +314,7 @@ static void vfio_intx_routing_notifier(PCIDevice *pdev)
        return;
    }

-    route = pci_device_route_intx_to_irq(&vdev->pdev, vdev->intx.pin);
+    route = pci_device_route_intx_to_irq(pdev, vdev->intx.pin);

    if (pci_intx_route_changed(&vdev->intx.route, &route)) {
        vfio_intx_update(vdev, &route);
@@ -326,7 +331,8 @@ static void vfio_irqchip_change(Notifier *notify, void 
*data)

static bool vfio_intx_enable(VFIOPCIDevice *vdev, Error **errp)
{
-    uint8_t pin = vfio_pci_read_config(&vdev->pdev, PCI_INTERRUPT_PIN, 1);
+    PCIDevice *pdev = PCI_DEVICE(vdev);
+    uint8_t pin = vfio_pci_read_config(pdev, PCI_INTERRUPT_PIN, 1);
    Error *err = NULL;
    int32_t fd;

@@ -344,7 +350,7 @@ static bool vfio_intx_enable(VFIOPCIDevice *vdev, Error 
**errp)
    }

    vdev->intx.pin = pin - 1; /* Pin A (1) -> irq[0] */
-    pci_config_set_interrupt_pin(vdev->pdev.config, pin);
+    pci_config_set_interrupt_pin(pdev->config, pin);

#ifdef CONFIG_KVM
    /*
@@ -352,7 +358,7 @@ static bool vfio_intx_enable(VFIOPCIDevice *vdev, Error 
**errp)
     * where we won't actually use the result anyway.
     */
    if (kvm_irqfds_enabled() && kvm_resamplefds_enabled()) {
-        vdev->intx.route = pci_device_route_intx_to_irq(&vdev->pdev,
+        vdev->intx.route = pci_device_route_intx_to_irq(pdev,
                                                        vdev->intx.pin);
    }
#endif
@@ -392,13 +398,14 @@ skip_signaling:

static void vfio_intx_disable(VFIOPCIDevice *vdev)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    int fd;

    timer_del(vdev->intx.mmap_timer);
    vfio_intx_disable_kvm(vdev);
    vfio_device_irq_disable(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX);
    vdev->intx.pending = false;
-    pci_irq_deassert(&vdev->pdev);
+    pci_irq_deassert(pdev);
    vfio_mmap_set_enabled(vdev, true);

    fd = event_notifier_get_fd(&vdev->intx.interrupt);
@@ -422,6 +429,7 @@ static void vfio_msi_interrupt(void *opaque)
{
    VFIOMSIVector *vector = opaque;
    VFIOPCIDevice *vdev = vector->vdev;
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    MSIMessage (*get_msg)(PCIDevice *dev, unsigned vector);
    void (*notify)(PCIDevice *dev, unsigned vector);
    MSIMessage msg;
@@ -436,9 +444,9 @@ static void vfio_msi_interrupt(void *opaque)
        notify = msix_notify;

        /* A masked vector firing needs to use the PBA, enable it */
-        if (msix_is_masked(&vdev->pdev, nr)) {
+        if (msix_is_masked(pdev, nr)) {
            set_bit(nr, vdev->msix->pending);
-            memory_region_set_enabled(&vdev->pdev.msix_pba_mmio, true);
+            memory_region_set_enabled(&pdev->msix_pba_mmio, true);
            trace_vfio_msix_pba_enable(vdev->vbasedev.name);
        }
    } else if (vdev->interrupt == VFIO_INT_MSI) {
@@ -448,9 +456,9 @@ static void vfio_msi_interrupt(void *opaque)
        abort();
    }

-    msg = get_msg(&vdev->pdev, nr);
+    msg = get_msg(pdev, nr);
    trace_vfio_msi_interrupt(vdev->vbasedev.name, nr, msg.address, msg.data);
-    notify(&vdev->pdev, nr);
+    notify(pdev, nr);
}

void vfio_pci_msi_set_handler(VFIOPCIDevice *vdev, int nr)
@@ -488,6 +496,7 @@ static int vfio_enable_msix_no_vec(VFIOPCIDevice *vdev)

static int vfio_enable_vectors(VFIOPCIDevice *vdev, bool msix)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    struct vfio_irq_set *irq_set;
    int ret = 0, i, argsz;
    int32_t *fds;
@@ -530,7 +539,7 @@ static int vfio_enable_vectors(VFIOPCIDevice *vdev, bool 
msix)
         */
        if (vdev->msi_vectors[i].use) {
            if (vdev->msi_vectors[i].virq < 0 ||
-                (msix && msix_is_masked(&vdev->pdev, i))) {
+                (msix && msix_is_masked(pdev, i))) {
                fd = event_notifier_get_fd(&vdev->msi_vectors[i].interrupt);
            } else {
                fd = event_notifier_get_fd(&vdev->msi_vectors[i].kvm_interrupt);
@@ -550,12 +559,14 @@ static int vfio_enable_vectors(VFIOPCIDevice *vdev, bool 
msix)
void vfio_pci_add_kvm_msi_virq(VFIOPCIDevice *vdev, VFIOMSIVector *vector,
                               int vector_n, bool msix)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
+
    if ((msix && vdev->no_kvm_msix) || (!msix && vdev->no_kvm_msi)) {
        return;
    }

    vector->virq = kvm_irqchip_add_msi_route(&vfio_route_change,
-                                             vector_n, &vdev->pdev);
+                                             vector_n, pdev);
}

static void vfio_connect_kvm_msi_virq(VFIOMSIVector *vector, int nr)
@@ -624,7 +635,7 @@ static void set_irq_signalling(VFIODevice *vbasedev, 
VFIOMSIVector *vector,
void vfio_pci_vector_init(VFIOPCIDevice *vdev, int nr)
{
    VFIOMSIVector *vector = &vdev->msi_vectors[nr];
-    PCIDevice *pdev = &vdev->pdev;
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    Error *local_err = NULL;

    vector->vdev = vdev;
@@ -713,7 +724,7 @@ static int vfio_msix_vector_do_use(PCIDevice *pdev, 
unsigned int nr,
    clear_bit(nr, vdev->msix->pending);
    if (find_first_bit(vdev->msix->pending,
                       vdev->nr_vectors) == vdev->nr_vectors) {
-        memory_region_set_enabled(&vdev->pdev.msix_pba_mmio, false);
+        memory_region_set_enabled(&pdev->msix_pba_mmio, false);
        trace_vfio_msix_pba_disable(vdev->vbasedev.name);
    }

@@ -764,7 +775,9 @@ static void vfio_msix_vector_release(PCIDevice *pdev, 
unsigned int nr)

void vfio_pci_msix_set_notifiers(VFIOPCIDevice *vdev)
{
-    msix_set_vector_notifiers(&vdev->pdev, vfio_msix_vector_use,
+    PCIDevice *pdev = PCI_DEVICE(vdev);
+
+    msix_set_vector_notifiers(pdev, vfio_msix_vector_use,
                              vfio_msix_vector_release, NULL);
}

@@ -791,6 +804,7 @@ void vfio_pci_commit_kvm_msi_virq_batch(VFIOPCIDevice *vdev)

static void vfio_msix_enable(VFIOPCIDevice *vdev)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    int ret;

    vfio_disable_interrupts(vdev);
@@ -807,7 +821,7 @@ static void vfio_msix_enable(VFIOPCIDevice *vdev)
     */
    vfio_pci_prepare_kvm_msi_virq_batch(vdev);

-    if (msix_set_vector_notifiers(&vdev->pdev, vfio_msix_vector_use,
+    if (msix_set_vector_notifiers(pdev, vfio_msix_vector_use,
                                  vfio_msix_vector_release, NULL)) {
        error_report("vfio: msix_set_vector_notifiers failed");
    }
@@ -845,11 +859,12 @@ static void vfio_msix_enable(VFIOPCIDevice *vdev)

static void vfio_msi_enable(VFIOPCIDevice *vdev)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    int ret, i;

    vfio_disable_interrupts(vdev);

-    vdev->nr_vectors = msi_nr_vectors_allocated(&vdev->pdev);
+    vdev->nr_vectors = msi_nr_vectors_allocated(pdev);
retry:
    /*
     * Setting vector notifiers needs to enable route for each vector.
@@ -942,10 +957,11 @@ static void vfio_msi_disable_common(VFIOPCIDevice *vdev)

static void vfio_msix_disable(VFIOPCIDevice *vdev)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    Error *err = NULL;
    int i;

-    msix_unset_vector_notifiers(&vdev->pdev);
+    msix_unset_vector_notifiers(pdev);

    /*
     * MSI-X will only release vectors if MSI-X is still enabled on the
@@ -953,8 +969,8 @@ static void vfio_msix_disable(VFIOPCIDevice *vdev)
     */
    for (i = 0; i < vdev->nr_vectors; i++) {
        if (vdev->msi_vectors[i].use) {
-            vfio_msix_vector_release(&vdev->pdev, i);
-            msix_vector_unuse(&vdev->pdev, i);
+            vfio_msix_vector_release(pdev, i);
+            msix_vector_unuse(pdev, i);
        }
    }

@@ -991,6 +1007,7 @@ static void vfio_msi_disable(VFIOPCIDevice *vdev)

static void vfio_update_msi(VFIOPCIDevice *vdev)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    int i;

    for (i = 0; i < vdev->nr_vectors; i++) {
@@ -1001,8 +1018,8 @@ static void vfio_update_msi(VFIOPCIDevice *vdev)
            continue;
        }

-        msg = msi_get_message(&vdev->pdev, i);
-        vfio_update_kvm_msi_virq(vector, msg, &vdev->pdev);
+        msg = msi_get_message(pdev, i);
+        vfio_update_kvm_msi_virq(vector, msg, pdev);
    }
}

@@ -1164,13 +1181,14 @@ static const MemoryRegionOps vfio_rom_ops = {

static void vfio_pci_size_rom(VFIOPCIDevice *vdev)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    VFIODevice *vbasedev = &vdev->vbasedev;
    uint32_t orig, size = cpu_to_le32((uint32_t)PCI_ROM_ADDRESS_MASK);
    char *name;

-    if (vdev->pdev.romfile || !vdev->pdev.rom_bar) {
+    if (pdev->romfile || !pdev->rom_bar) {
        /* Since pci handles romfile, just print a message and return */
-        if (vfio_opt_rom_in_denylist(vdev) && vdev->pdev.romfile) {
+        if (vfio_opt_rom_in_denylist(vdev) && pdev->romfile) {
            warn_report("Device at %s is known to cause system instability"
                        " issues during option rom execution",
                        vdev->vbasedev.name);
@@ -1199,7 +1217,7 @@ static void vfio_pci_size_rom(VFIOPCIDevice *vdev)
    }

    if (vfio_opt_rom_in_denylist(vdev)) {
-        if (vdev->pdev.rom_bar > 0) {
+        if (pdev->rom_bar > 0) {
            warn_report("Device at %s is known to cause system instability"
                        " issues during option rom execution",
                        vdev->vbasedev.name);
@@ -1218,12 +1236,12 @@ static void vfio_pci_size_rom(VFIOPCIDevice *vdev)

    name = g_strdup_printf("vfio[%s].rom", vdev->vbasedev.name);

-    memory_region_init_io(&vdev->pdev.rom, OBJECT(vdev),
+    memory_region_init_io(&pdev->rom, OBJECT(vdev),
                          &vfio_rom_ops, vdev, name, size);
    g_free(name);

-    pci_register_bar(&vdev->pdev, PCI_ROM_SLOT,
-                     PCI_BASE_ADDRESS_SPACE_MEMORY, &vdev->pdev.rom);
+    pci_register_bar(pdev, PCI_ROM_SLOT,
+                     PCI_BASE_ADDRESS_SPACE_MEMORY, &pdev->rom);

    vdev->rom_read_failed = false;
}
@@ -1496,6 +1514,7 @@ static void vfio_disable_interrupts(VFIOPCIDevice *vdev)

static bool vfio_msi_setup(VFIOPCIDevice *vdev, int pos, Error **errp)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    uint16_t ctrl;
    bool msi_64bit, msi_maskbit;
    int ret, entries;
@@ -1516,7 +1535,7 @@ static bool vfio_msi_setup(VFIOPCIDevice *vdev, int pos, 
Error **errp)

    trace_vfio_msi_setup(vdev->vbasedev.name, pos);

-    ret = msi_init(&vdev->pdev, pos, entries, msi_64bit, msi_maskbit, &err);
+    ret = msi_init(pdev, pos, entries, msi_64bit, msi_maskbit, &err);
    if (ret < 0) {
        if (ret == -ENOTSUP) {
            return true;
@@ -1709,6 +1728,7 @@ static bool vfio_pci_relocate_msix(VFIOPCIDevice *vdev, 
Error **errp)
 */
static bool vfio_msix_early_setup(VFIOPCIDevice *vdev, Error **errp)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    uint8_t pos;
    uint16_t ctrl;
    uint32_t table, pba;
@@ -1716,7 +1736,7 @@ static bool vfio_msix_early_setup(VFIOPCIDevice *vdev, 
Error **errp)
    VFIOMSIXInfo *msix;
    int ret;

-    pos = pci_find_capability(&vdev->pdev, PCI_CAP_ID_MSIX);
+    pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
    if (!pos) {
        return true;
    }
@@ -1808,12 +1828,13 @@ static bool vfio_msix_early_setup(VFIOPCIDevice *vdev, 
Error **errp)

static bool vfio_msix_setup(VFIOPCIDevice *vdev, int pos, Error **errp)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    int ret;
    Error *err = NULL;

    vdev->msix->pending = g_new0(unsigned long,
                                 BITS_TO_LONGS(vdev->msix->entries));
-    ret = msix_init(&vdev->pdev, vdev->msix->entries,
+    ret = msix_init(pdev, vdev->msix->entries,
                    vdev->bars[vdev->msix->table_bar].mr,
                    vdev->msix->table_bar, vdev->msix->table_offset,
                    vdev->bars[vdev->msix->pba_bar].mr,
@@ -1845,7 +1866,7 @@ static bool vfio_msix_setup(VFIOPCIDevice *vdev, int pos, 
Error **errp)
     * vector-use notifier is called, which occurs on unmask, we test whether
     * PBA emulation is needed and again disable if not.
     */
-    memory_region_set_enabled(&vdev->pdev.msix_pba_mmio, false);
+    memory_region_set_enabled(&pdev->msix_pba_mmio, false);

    /*
     * The emulated machine may provide a paravirt interface for MSIX setup
@@ -1857,7 +1878,7 @@ static bool vfio_msix_setup(VFIOPCIDevice *vdev, int pos, 
Error **errp)
     */
    if (object_property_get_bool(OBJECT(qdev_get_machine()),
                                 "vfio-no-msix-emulation", NULL)) {
-        memory_region_set_enabled(&vdev->pdev.msix_table_mmio, false);
+        memory_region_set_enabled(&pdev->msix_table_mmio, false);
    }

    return true;
@@ -1865,10 +1886,12 @@ static bool vfio_msix_setup(VFIOPCIDevice *vdev, int 
pos, Error **errp)

void vfio_pci_teardown_msi(VFIOPCIDevice *vdev)
{
-    msi_uninit(&vdev->pdev);
+    PCIDevice *pdev = PCI_DEVICE(vdev);
+
+    msi_uninit(pdev);

    if (vdev->msix) {
-        msix_uninit(&vdev->pdev,
+        msix_uninit(pdev,
                    vdev->bars[vdev->msix->table_bar].mr,
                    vdev->bars[vdev->msix->pba_bar].mr);
        g_free(vdev->msix->pending);
@@ -1929,6 +1952,7 @@ static void vfio_bars_prepare(VFIOPCIDevice *vdev)

static void vfio_bar_register(VFIOPCIDevice *vdev, int nr)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    VFIOBAR *bar = &vdev->bars[nr];
    char *name;

@@ -1950,7 +1974,7 @@ static void vfio_bar_register(VFIOPCIDevice *vdev, int nr)
        }
    }

-    pci_register_bar(&vdev->pdev, nr, bar->type, bar->mr);
+    pci_register_bar(pdev, nr, bar->type, bar->mr);
}

static void vfio_bars_register(VFIOPCIDevice *vdev)
@@ -1964,6 +1988,7 @@ static void vfio_bars_register(VFIOPCIDevice *vdev)

void vfio_pci_bars_exit(VFIOPCIDevice *vdev)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    int i;

    for (i = 0; i < PCI_ROM_SLOT; i++) {
@@ -1977,7 +2002,7 @@ void vfio_pci_bars_exit(VFIOPCIDevice *vdev)
    }

    if (vdev->vga) {
-        pci_unregister_vga(&vdev->pdev);
+        pci_unregister_vga(pdev);
        vfio_vga_quirk_exit(vdev);
    }
}
@@ -2049,8 +2074,10 @@ static void vfio_set_word_bits(uint8_t *buf, uint16_t 
val, uint16_t mask)
static void vfio_add_emulated_word(VFIOPCIDevice *vdev, int pos,
                                   uint16_t val, uint16_t mask)
{
-    vfio_set_word_bits(vdev->pdev.config + pos, val, mask);
-    vfio_set_word_bits(vdev->pdev.wmask + pos, ~mask, mask);
+    PCIDevice *pdev = PCI_DEVICE(vdev);
+
+    vfio_set_word_bits(pdev->config + pos, val, mask);
+    vfio_set_word_bits(pdev->wmask + pos, ~mask, mask);
    vfio_set_word_bits(vdev->emulated_config_bits + pos, mask, mask);
}

@@ -2062,8 +2089,10 @@ static void vfio_set_long_bits(uint8_t *buf, uint32_t 
val, uint32_t mask)
static void vfio_add_emulated_long(VFIOPCIDevice *vdev, int pos,
                                   uint32_t val, uint32_t mask)
{
-    vfio_set_long_bits(vdev->pdev.config + pos, val, mask);
-    vfio_set_long_bits(vdev->pdev.wmask + pos, ~mask, mask);
+    PCIDevice *pdev = PCI_DEVICE(vdev);
+
+    vfio_set_long_bits(pdev->config + pos, val, mask);
+    vfio_set_long_bits(pdev->wmask + pos, ~mask, mask);
    vfio_set_long_bits(vdev->emulated_config_bits + pos, mask, mask);
}

@@ -2071,7 +2100,8 @@ static void vfio_pci_enable_rp_atomics(VFIOPCIDevice 
*vdev)
{
    struct vfio_device_info_cap_pci_atomic_comp *cap;
    g_autofree struct vfio_device_info *info = NULL;
-    PCIBus *bus = pci_get_bus(&vdev->pdev);
+    PCIDevice *pdev = PCI_DEVICE(vdev);
+    PCIBus *bus = pci_get_bus(pdev);
    PCIDevice *parent = bus->parent_dev;
    struct vfio_info_cap_header *hdr;
    uint32_t mask = 0;
@@ -2087,8 +2117,8 @@ static void vfio_pci_enable_rp_atomics(VFIOPCIDevice 
*vdev)
    if (pci_bus_is_root(bus) || !parent || !parent->exp.exp_cap ||
        pcie_cap_get_type(parent) != PCI_EXP_TYPE_ROOT_PORT ||
        pcie_cap_get_version(parent) != PCI_EXP_FLAGS_VER2 ||
-        vdev->pdev.devfn ||
-        vdev->pdev.cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
+        pdev->devfn ||
+        pdev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
        return;
    }

@@ -2132,8 +2162,10 @@ static void vfio_pci_enable_rp_atomics(VFIOPCIDevice 
*vdev)

static void vfio_pci_disable_rp_atomics(VFIOPCIDevice *vdev)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
+
    if (vdev->clear_parent_atomics_on_exit) {
-        PCIDevice *parent = pci_get_bus(&vdev->pdev)->parent_dev;
+        PCIDevice *parent = pci_get_bus(pdev)->parent_dev;
        uint8_t *pos = parent->config + parent->exp.exp_cap + PCI_EXP_DEVCAP2;

        pci_long_test_and_clear_mask(pos, PCI_EXP_DEVCAP2_ATOMIC_COMP32 |
@@ -2145,10 +2177,11 @@ static void vfio_pci_disable_rp_atomics(VFIOPCIDevice 
*vdev)
static bool vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int pos, uint8_t size,
                                Error **errp)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    uint16_t flags;
    uint8_t type;

-    flags = pci_get_word(vdev->pdev.config + pos + PCI_CAP_FLAGS);
+    flags = pci_get_word(pdev->config + pos + PCI_CAP_FLAGS);
    type = (flags & PCI_EXP_FLAGS_TYPE) >> 4;

    if (type != PCI_EXP_TYPE_ENDPOINT &&
@@ -2160,8 +2193,8 @@ static bool vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int 
pos, uint8_t size,
        return false;
    }

-    if (!pci_bus_is_express(pci_get_bus(&vdev->pdev))) {
-        PCIBus *bus = pci_get_bus(&vdev->pdev);
+    if (!pci_bus_is_express(pci_get_bus(pdev))) {
+        PCIBus *bus = pci_get_bus(pdev);
        PCIDevice *bridge;

        /*
@@ -2193,7 +2226,7 @@ static bool vfio_setup_pcie_cap(VFIOPCIDevice *vdev, int 
pos, uint8_t size,
            return true;
        }

-    } else if (pci_bus_is_root(pci_get_bus(&vdev->pdev))) {
+    } else if (pci_bus_is_root(pci_get_bus(pdev))) {
        /*
         * On a Root Complex bus Endpoints become Root Complex Integrated
         * Endpoints, which changes the type and clears the LNK & LNK2 fields.
@@ -2261,20 +2294,20 @@ static bool vfio_setup_pcie_cap(VFIOPCIDevice *vdev, 
int pos, uint8_t size,
                               1, PCI_EXP_FLAGS_VERS);
    }

-    pos = pci_add_capability(&vdev->pdev, PCI_CAP_ID_EXP, pos, size,
-                             errp);
+    pos = pci_add_capability(pdev, PCI_CAP_ID_EXP, pos, size, errp);
    if (pos < 0) {
        return false;
    }

-    vdev->pdev.exp.exp_cap = pos;
+    pdev->exp.exp_cap = pos;

    return true;
}

static void vfio_check_pcie_flr(VFIOPCIDevice *vdev, uint8_t pos)
{
-    uint32_t cap = pci_get_long(vdev->pdev.config + pos + PCI_EXP_DEVCAP);
+    PCIDevice *pdev = PCI_DEVICE(vdev);
+    uint32_t cap = pci_get_long(pdev->config + pos + PCI_EXP_DEVCAP);

    if (cap & PCI_EXP_DEVCAP_FLR) {
        trace_vfio_check_pcie_flr(vdev->vbasedev.name);
@@ -2284,7 +2317,8 @@ static void vfio_check_pcie_flr(VFIOPCIDevice *vdev, 
uint8_t pos)

static void vfio_check_pm_reset(VFIOPCIDevice *vdev, uint8_t pos)
{
-    uint16_t csr = pci_get_word(vdev->pdev.config + pos + PCI_PM_CTRL);
+    PCIDevice *pdev = PCI_DEVICE(vdev);
+    uint16_t csr = pci_get_word(pdev->config + pos + PCI_PM_CTRL);

    if (!(csr & PCI_PM_CTRL_NO_SOFT_RESET)) {
        trace_vfio_check_pm_reset(vdev->vbasedev.name);
@@ -2294,7 +2328,8 @@ static void vfio_check_pm_reset(VFIOPCIDevice *vdev, 
uint8_t pos)

static void vfio_check_af_flr(VFIOPCIDevice *vdev, uint8_t pos)
{
-    uint8_t cap = pci_get_byte(vdev->pdev.config + pos + PCI_AF_CAP);
+    PCIDevice *pdev = PCI_DEVICE(vdev);
+    uint8_t cap = pci_get_byte(pdev->config + pos + PCI_AF_CAP);

    if ((cap & PCI_AF_CAP_TP) && (cap & PCI_AF_CAP_FLR)) {
        trace_vfio_check_af_flr(vdev->vbasedev.name);
@@ -2305,7 +2340,7 @@ static void vfio_check_af_flr(VFIOPCIDevice *vdev, 
uint8_t pos)
static bool vfio_add_vendor_specific_cap(VFIOPCIDevice *vdev, int pos,
                                         uint8_t size, Error **errp)
{
-    PCIDevice *pdev = &vdev->pdev;
+    PCIDevice *pdev = PCI_DEVICE(vdev);

    pos = pci_add_capability(pdev, PCI_CAP_ID_VNDR, pos, size, errp);
    if (pos < 0) {
@@ -2327,7 +2362,7 @@ static bool vfio_add_vendor_specific_cap(VFIOPCIDevice 
*vdev, int pos,
static bool vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos, Error **errp)
{
    ERRP_GUARD();
-    PCIDevice *pdev = &vdev->pdev;
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    uint8_t cap_id, next, size;
    bool ret;

@@ -2413,17 +2448,18 @@ static bool vfio_add_std_cap(VFIOPCIDevice *vdev, 
uint8_t pos, Error **errp)

static int vfio_setup_rebar_ecap(VFIOPCIDevice *vdev, uint16_t pos)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    uint32_t ctrl;
    int i, nbar;

-    ctrl = pci_get_long(vdev->pdev.config + pos + PCI_REBAR_CTRL);
+    ctrl = pci_get_long(pdev->config + pos + PCI_REBAR_CTRL);
    nbar = (ctrl & PCI_REBAR_CTRL_NBAR_MASK) >> PCI_REBAR_CTRL_NBAR_SHIFT;

    for (i = 0; i < nbar; i++) {
        uint32_t cap;
        int size;

-        ctrl = pci_get_long(vdev->pdev.config + pos + PCI_REBAR_CTRL + (i * 
8));
+        ctrl = pci_get_long(pdev->config + pos + PCI_REBAR_CTRL + (i * 8));
        size = (ctrl & PCI_REBAR_CTRL_BAR_SIZE) >> PCI_REBAR_CTRL_BAR_SHIFT;

        /* The cap register reports sizes 1MB to 128TB, with 4 reserved bits */
@@ -2461,7 +2497,7 @@ static int vfio_setup_rebar_ecap(VFIOPCIDevice *vdev, 
uint16_t pos)

static void vfio_add_ext_cap(VFIOPCIDevice *vdev)
{
-    PCIDevice *pdev = &vdev->pdev;
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    uint32_t header;
    uint16_t cap_id, next, size;
    uint8_t cap_ver;
@@ -2555,7 +2591,7 @@ static void vfio_add_ext_cap(VFIOPCIDevice *vdev)

bool vfio_pci_add_capabilities(VFIOPCIDevice *vdev, Error **errp)
{
-    PCIDevice *pdev = &vdev->pdev;
+    PCIDevice *pdev = PCI_DEVICE(vdev);

    if (!(pdev->config[PCI_STATUS] & PCI_STATUS_CAP_LIST) ||
        !pdev->config[PCI_CAPABILITY_LIST]) {
@@ -2572,7 +2608,7 @@ bool vfio_pci_add_capabilities(VFIOPCIDevice *vdev, Error 
**errp)

void vfio_pci_pre_reset(VFIOPCIDevice *vdev)
{
-    PCIDevice *pdev = &vdev->pdev;
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    uint16_t cmd;

    vfio_disable_interrupts(vdev);
@@ -2789,7 +2825,7 @@ static int vfio_pci_save_config(VFIODevice *vbasedev, 
QEMUFile *f, Error **errp)
static int vfio_pci_load_config(VFIODevice *vbasedev, QEMUFile *f)
{
    VFIOPCIDevice *vdev = container_of(vbasedev, VFIOPCIDevice, vbasedev);
-    PCIDevice *pdev = &vdev->pdev;
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    pcibus_t old_addr[PCI_NUM_REGIONS - 1];
    int bar, ret;

@@ -2837,6 +2873,7 @@ static VFIODeviceOps vfio_pci_ops = {

bool vfio_populate_vga(VFIOPCIDevice *vdev, Error **errp)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    VFIODevice *vbasedev = &vdev->vbasedev;
    struct vfio_region_info *reg_info = NULL;
    int ret;
@@ -2893,7 +2930,7 @@ bool vfio_populate_vga(VFIOPCIDevice *vdev, Error **errp)
                          "vfio-vga-io@0x3c0",
                          QEMU_PCI_VGA_IO_HI_SIZE);

-    pci_register_vga(&vdev->pdev, &vdev->vga->region[QEMU_PCI_VGA_MEM].mem,
+    pci_register_vga(pdev, &vdev->vga->region[QEMU_PCI_VGA_MEM].mem,
                     &vdev->vga->region[QEMU_PCI_VGA_IO_LO].mem,
                     &vdev->vga->region[QEMU_PCI_VGA_IO_HI].mem);

@@ -2902,6 +2939,7 @@ bool vfio_populate_vga(VFIOPCIDevice *vdev, Error **errp)

bool vfio_pci_populate_device(VFIOPCIDevice *vdev, Error **errp)
{
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    VFIODevice *vbasedev = &vdev->vbasedev;
    struct vfio_region_info *reg_info = NULL;
    struct vfio_irq_info irq_info;
@@ -2953,7 +2991,7 @@ bool vfio_pci_populate_device(VFIOPCIDevice *vdev, Error 
**errp)

    vdev->config_size = reg_info->size;
    if (vdev->config_size == PCI_CONFIG_SPACE_SIZE) {
-        vdev->pdev.cap_present &= ~QEMU_PCI_CAP_EXPRESS;
+        pdev->cap_present &= ~QEMU_PCI_CAP_EXPRESS;
    }
    vdev->config_offset = reg_info->offset;

@@ -3156,16 +3194,16 @@ static void vfio_unregister_req_notifier(VFIOPCIDevice 
*vdev)

bool vfio_pci_config_setup(VFIOPCIDevice *vdev, Error **errp)
{
-    PCIDevice *pdev = &vdev->pdev;
+    PCIDevice *pdev = PCI_DEVICE(vdev);
    VFIODevice *vbasedev = &vdev->vbasedev;
    uint32_t config_space_size;
    int ret;

-    config_space_size = MIN(pci_config_size(&vdev->pdev), vdev->config_size);
+    config_space_size = MIN(pci_config_size(pdev), vdev->config_size);

    /* Get a copy of config space */
    ret = vfio_pci_config_space_read(vdev, 0, config_space_size,
-                                     vdev->pdev.config);
+                                     pdev->config);
    if (ret < (int)config_space_size) {
        ret = ret < 0 ? -ret : EFAULT;
        error_setg_errno(errp, ret, "failed to read device config space");
@@ -3233,10 +3271,10 @@ bool vfio_pci_config_setup(VFIOPCIDevice *vdev, Error 
**errp)
                                              PCI_HEADER_TYPE_MULTI_FUNCTION;

    /* Restore or clear multifunction, this is always controlled by QEMU */
-    if (vdev->pdev.cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
-        vdev->pdev.config[PCI_HEADER_TYPE] |= PCI_HEADER_TYPE_MULTI_FUNCTION;
+    if (pdev->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) {
+        pdev->config[PCI_HEADER_TYPE] |= PCI_HEADER_TYPE_MULTI_FUNCTION;
    } else {
-        vdev->pdev.config[PCI_HEADER_TYPE] &= ~PCI_HEADER_TYPE_MULTI_FUNCTION;
+        pdev->config[PCI_HEADER_TYPE] &= ~PCI_HEADER_TYPE_MULTI_FUNCTION;
    }

    /*
@@ -3244,8 +3282,8 @@ bool vfio_pci_config_setup(VFIOPCIDevice *vdev, Error 
**errp)
     * BAR, such as might be the case with the option ROM, we can get
     * confusing, unwritable, residual addresses from the host here.
     */
-    memset(&vdev->pdev.config[PCI_BASE_ADDRESS_0], 0, 24);
-    memset(&vdev->pdev.config[PCI_ROM_ADDRESS], 0, 4);
+    memset(&pdev->config[PCI_BASE_ADDRESS_0], 0, 24);
+    memset(&pdev->config[PCI_ROM_ADDRESS], 0, 4);

    vfio_pci_size_rom(vdev);

@@ -3262,7 +3300,7 @@ bool vfio_pci_config_setup(VFIOPCIDevice *vdev, Error 
**errp)

bool vfio_pci_interrupt_setup(VFIOPCIDevice *vdev, Error **errp)
{
-    PCIDevice *pdev = &vdev->pdev;
+    PCIDevice *pdev = PCI_DEVICE(vdev);

    /* QEMU emulates all of MSI & MSIX */
    if (pdev->cap_present & QEMU_PCI_CAP_MSIX) {
@@ -3275,10 +3313,10 @@ bool vfio_pci_interrupt_setup(VFIOPCIDevice *vdev, 
Error **errp)
               vdev->msi_cap_size);
    }

-    if (vfio_pci_read_config(&vdev->pdev, PCI_INTERRUPT_PIN, 1)) {
+    if (vfio_pci_read_config(pdev, PCI_INTERRUPT_PIN, 1)) {
        vdev->intx.mmap_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL,
                                             vfio_intx_mmap_enable, vdev);
-        pci_device_set_intx_routing_notifier(&vdev->pdev,
+        pci_device_set_intx_routing_notifier(pdev,
                                             vfio_intx_routing_notifier);
        vdev->irqchip_change_notifier.notify = vfio_irqchip_change;
        kvm_irqchip_add_change_notifier(&vdev->irqchip_change_notifier);
@@ -3290,7 +3328,7 @@ bool vfio_pci_interrupt_setup(VFIOPCIDevice *vdev, Error 
**errp)
         */
        if (!cpr_is_incoming() && !vfio_intx_enable(vdev, errp)) {
            timer_free(vdev->intx.mmap_timer);
-            pci_device_set_intx_routing_notifier(&vdev->pdev, NULL);
+            pci_device_set_intx_routing_notifier(pdev, NULL);
            kvm_irqchip_remove_change_notifier(&vdev->irqchip_change_notifier);
            return false;
        }
@@ -3440,7 +3478,7 @@ out_deregister:
    if (vdev->interrupt == VFIO_INT_INTx) {
        vfio_intx_disable(vdev);
    }
-    pci_device_set_intx_routing_notifier(&vdev->pdev, NULL);
+    pci_device_set_intx_routing_notifier(pdev, NULL);
    if (vdev->irqchip_change_notifier.notify) {
        kvm_irqchip_remove_change_notifier(&vdev->irqchip_change_notifier);
    }
@@ -3472,7 +3510,7 @@ static void vfio_exitfn(PCIDevice *pdev)

    vfio_unregister_req_notifier(vdev);
    vfio_unregister_err_notifier(vdev);
-    pci_device_set_intx_routing_notifier(&vdev->pdev, NULL);
+    pci_device_set_intx_routing_notifier(pdev, NULL);
    if (vdev->irqchip_change_notifier.notify) {
        kvm_irqchip_remove_change_notifier(&vdev->irqchip_change_notifier);
    }


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