[PATCH v3 04/15] vfio/common: Propagate KVM_SET_DEVICE_ATTR error if any

[Eric Auger <eric.auger@redhat.com>]

In the VFIO_SPAPR_TCE_v2_IOMMU container case, when
KVM_SET_DEVICE_ATTR fails, we currently don't propagate the
error as we do on the vfio_spapr_create_window() failure
case. Let's align the code. Take the opportunity to
reword the error message and make it more explicit.

Signed-off-by: Eric Auger <eric.auger@redhat.com>

---

I think thise should end up in the
    if (!container->initialized) {
        if (!container->error) {
path and call the error_propagate_prepend()
---
 hw/vfio/common.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 4e122fc4e4..c54a72ec80 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -878,11 +878,11 @@ static void vfio_listener_region_add(MemoryListener *listener,
                 QLIST_FOREACH(group, &container->group_list, container_next) {
                     param.groupfd = group->fd;
                     if (ioctl(vfio_kvm_device_fd, KVM_SET_DEVICE_ATTR, &attr)) {
-                        error_report("vfio: failed to setup fd %d "
-                                     "for a group with fd %d: %s",
-                                     param.tablefd, param.groupfd,
-                                     strerror(errno));
-                        return;
+                        error_setg_errno(&err, errno,
+                                         "vfio: failed GROUP_SET_SPAPR_TCE for "
+                                         "KVM VFIO device %d and group fd %d",
+                                         param.tablefd, param.groupfd);
+                        goto fail;
                     }
                     trace_vfio_spapr_group_attach(param.groupfd, param.tablefd);
                 }
-- 
2.41.0