diff options
Diffstat (limited to 'hw/vfio')
| -rw-r--r-- | hw/vfio/migration.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index 776fd2d7cd..5d1e66f691 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -555,6 +555,19 @@ static int vfio_migration_query_flags(VFIODevice *vbasedev, uint64_t *mig_flags) return 0; } +static bool vfio_dma_logging_supported(VFIODevice *vbasedev) +{ + uint64_t buf[DIV_ROUND_UP(sizeof(struct vfio_device_feature), + sizeof(uint64_t))] = {}; + struct vfio_device_feature *feature = (struct vfio_device_feature *)buf; + + feature->argsz = sizeof(buf); + feature->flags = VFIO_DEVICE_FEATURE_PROBE | + VFIO_DEVICE_FEATURE_DMA_LOGGING_START; + + return !ioctl(vbasedev->fd, VFIO_DEVICE_FEATURE, feature); +} + static int vfio_migration_init(VFIODevice *vbasedev) { int ret; @@ -589,6 +602,8 @@ static int vfio_migration_init(VFIODevice *vbasedev) migration->device_state = VFIO_DEVICE_STATE_RUNNING; migration->data_fd = -1; + vbasedev->dirty_pages_supported = vfio_dma_logging_supported(vbasedev); + oid = vmstate_if_get_id(VMSTATE_IF(DEVICE(obj))); if (oid) { path = g_strdup_printf("%s/vfio", oid); |