diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/vfio/common.c | 15 | ||||
| -rw-r--r-- | hw/vfio/pci.c | 9 |
2 files changed, 24 insertions, 0 deletions
diff --git a/hw/vfio/common.c b/hw/vfio/common.c index 07c03d7..5e84716 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -1471,6 +1471,21 @@ int vfio_get_dev_region_info(VFIODevice *vbasedev, uint32_t type, return -ENODEV; } +bool vfio_has_region_cap(VFIODevice *vbasedev, int region, uint16_t cap_type) +{ + struct vfio_region_info *info = NULL; + bool ret = false; + + if (!vfio_get_region_info(vbasedev, region, &info)) { + if (vfio_get_region_info_cap(info, cap_type)) { + ret = true; + } + g_free(info); + } + + return ret; +} + /* * Interfaces for IBM EEH (Enhanced Error Handling) */ diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index b9d2c12..02974f4 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. */ |