Patches 1 & 2 are about a fix needed to make zero-copy flush work. The code that incremented the sendmsg counter ended up missing in the last versions of the patchset, causing the flush to never happen.
Patch 3 is about an improvement on flushing that improves sending performance. Patch 4 is about making zero-copy-send a migration capability, instead of a migration parameter. Which actually makes more sense and helps the implementation of the libvirt code. Leonardo Bras (4): QIOChannelSocket: Introduce assert and reduce ifdefs to improve readability QIOChannelSocket: Fix zero-copy send so socket flush works migration: zero-copy flush only at the end of bitmap scanning migration: Change zero_copy_send from migration parameter to migration capability qapi/migration.json | 33 +++++++----------------- migration/multifd.h | 1 + io/channel-socket.c | 19 ++++++++++---- migration/migration.c | 52 ++++++++++++++------------------------ migration/multifd.c | 58 ++++++++++++++++++++++++------------------- migration/ram.c | 7 ++++++ monitor/hmp-cmds.c | 6 ----- 7 files changed, 83 insertions(+), 93 deletions(-) -- 2.36.1