On 07.01.20 12:55, Michael S. Tsirkin wrote: > > I pushed batched-v3 - same head but bisect should work now. > With commit 38ced0208491103b50f1056f0d1c8f28e2e13d08 (HEAD) Author: Michael S. Tsirkin <mst@xxxxxxxxxx> AuthorDate: Wed Dec 11 12:19:26 2019 -0500 Commit: Michael S. Tsirkin <mst@xxxxxxxxxx> CommitDate: Tue Jan 7 06:52:42 2020 -0500 vhost: use batched version by default I have exactly one successful ping and then the network inside the guest is broken (no packet anymore). So you could consider this commit broken (but in a different way and also without any guest reboot necessary). bisect log: git bisect start # bad: [d2f6175f52062ee51ee69754a6925608213475d2] vhost: use vhost_desc instead of vhost_log git bisect bad d2f6175f52062ee51ee69754a6925608213475d2 # good: [d1281e3a562ec6a08f944a876481dd043ba739b9] virtio-blk: remove VIRTIO_BLK_F_SCSI support git bisect good d1281e3a562ec6a08f944a876481dd043ba739b9 # good: [fac7c0f46996e32d996f5c46121df24a6b95ec3b] vhost: option to fetch descriptors through an independent struct git bisect good fac7c0f46996e32d996f5c46121df24a6b95ec3b # bad: [539eb9d738f048cd7be61f404e8f9c7d9d2ff3cc] vhost: batching fetches git bisect bad 539eb9d738f048cd7be61f404e8f9c7d9d2ff3cc