Disable USO for virtio-net to fix RHEL10 to RHEL9 migration
Merge Request Required Information
Summary of Changes
virtio-net: disable USO for RHEL9
Theoretically, QEMU from RHEL9.3 and on supports USO, but practically we clear the support because RHEL9 kernels do not support that.
Now that RHEL10 beta does we suddenly get a migration compatibility issue. We should not have enabled the feature in RHEL9 userspace, but luckily, it's not too late to fix that.
Note: if we ever change RHEL9 kernel to enable USO, we will need to mask this in RHEL9 QEMU, too.
Upstream status: n/a: upstream has no guarantee if kernel features change Jira: https://issues.redhat.com/browse/RHEL-40950 Signed-off-by: Michael S. Tsirkin mst@redhat.com