diff options
Diffstat (limited to 'hw/vfio/pci.c')
| -rw-r--r-- | hw/vfio/pci.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 3ba3cbc146..b9bc6cd310 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -1295,6 +1295,15 @@ static void vfio_pci_fixup_msix_region(VFIOPCIDevice *vdev) VFIORegion *region = &vdev->bars[vdev->msix->table_bar].region; /* + * If the host driver allows mapping of a MSIX data, we are going to + * do map the entire BAR and emulate MSIX table on top of that. + */ + if (vfio_has_region_cap(&vdev->vbasedev, region->nr, + VFIO_REGION_INFO_CAP_MSIX_MAPPABLE)) { + return; + } + + /* * We expect to find a single mmap covering the whole BAR, anything else * means it's either unsupported or already setup. */ @@ -1572,6 +1581,19 @@ static int vfio_msix_setup(VFIOPCIDevice *vdev, int pos, Error **errp) */ memory_region_set_enabled(&vdev->pdev.msix_pba_mmio, false); + /* + * The emulated machine may provide a paravirt interface for MSIX setup + * so it is not strictly necessary to emulate MSIX here. This becomes + * helpful when frequently accessed MMIO registers are located in + * subpages adjacent to the MSIX table but the MSIX data containing page + * cannot be mapped because of a host page size bigger than the MSIX table + * alignment. + */ + if (object_property_get_bool(OBJECT(qdev_get_machine()), + "vfio-no-msix-emulation", NULL)) { + memory_region_set_enabled(&vdev->pdev.msix_table_mmio, false); + } + return 0; } @@ -3015,6 +3037,13 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) } } + if (vdev->display != ON_OFF_AUTO_OFF) { + ret = vfio_display_probe(vdev, errp); + if (ret) { + goto out_teardown; + } + } + vfio_register_err_notifier(vdev); vfio_register_req_notifier(vdev); vfio_setup_resetfn_quirk(vdev); @@ -3035,6 +3064,7 @@ static void vfio_instance_finalize(Object *obj) VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, pci_dev); VFIOGroup *group = vdev->vbasedev.group; + vfio_display_finalize(vdev); vfio_bars_finalize(vdev); g_free(vdev->emulated_config_bits); g_free(vdev->rom); @@ -3123,6 +3153,8 @@ static void vfio_instance_init(Object *obj) static Property vfio_pci_dev_properties[] = { DEFINE_PROP_PCI_HOST_DEVADDR("host", VFIOPCIDevice, host), DEFINE_PROP_STRING("sysfsdev", VFIOPCIDevice, vbasedev.sysfsdev), + DEFINE_PROP_ON_OFF_AUTO("display", VFIOPCIDevice, + display, ON_OFF_AUTO_AUTO), DEFINE_PROP_UINT32("x-intx-mmap-timeout-ms", VFIOPCIDevice, intx.mmap_timeout, 1100), DEFINE_PROP_BIT("x-vga", VFIOPCIDevice, features, |