I bisected this down to the upstream commit below. Now, that's not to say that this commit is necessarily bad - it may just make an existing problem more reproducible.
commit 7235acdb1144460d9f520f0d931f3cbb79eb244c Author: Jason Wang <[email protected]> Date: Mon Apr 25 22:14:32 2016 -0400 vhost: simplify work flushing We used to implement the work flushing through tracking queued seq, done seq, and the number of flushing. This patch simplify this by just implement work flushing through another kind of vhost work with completion. This will be used by lockless enqueuing patch. Signed-off-by: Jason Wang <[email protected]> Reviewed-by: Michael S. Tsirkin <[email protected]> Signed-off-by: Michael S. Tsirkin <[email protected]> -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1673564 Title: ThunderX: soft lockup on 4.8+ kernels when running qemu-efi with vhost=on To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/1673564/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
