diff options
Diffstat (limited to 'hw/vfio/pci.c')
| -rw-r--r-- | hw/vfio/pci.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index e03d9f3..b34e914 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -2963,12 +2963,9 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) ERRP_GUARD(); VFIOPCIDevice *vdev = VFIO_PCI(pdev); VFIODevice *vbasedev = &vdev->vbasedev; - char *subsys; int i, ret; - bool is_mdev; char uuid[UUID_STR_LEN]; g_autofree char *name = NULL; - g_autofree char *tmp = NULL; if (vbasedev->fd < 0 && !vbasedev->sysfsdev) { if (!(~vdev->host.domain || ~vdev->host.bus || @@ -2997,14 +2994,11 @@ static void vfio_realize(PCIDevice *pdev, Error **errp) * stays in sync with the active working set of the guest driver. Prevent * the x-balloon-allowed option unless this is minimally an mdev device. */ - tmp = g_strdup_printf("%s/subsystem", vbasedev->sysfsdev); - subsys = realpath(tmp, NULL); - is_mdev = subsys && (strcmp(subsys, "/sys/bus/mdev") == 0); - free(subsys); + vbasedev->mdev = vfio_device_is_mdev(vbasedev); - trace_vfio_mdev(vbasedev->name, is_mdev); + trace_vfio_mdev(vbasedev->name, vbasedev->mdev); - if (vbasedev->ram_block_discard_allowed && !is_mdev) { + if (vbasedev->ram_block_discard_allowed && !vbasedev->mdev) { error_setg(errp, "x-balloon-allowed only potentially compatible " "with mdev devices"); goto error; |