On Mon, Jul 04, 2022 at 05:23:15PM -0300, Leonardo Bras wrote: > Some errors, like the lack of Scatter-Gather support by the network > interface(NETIF_F_SG) may cause sendmsg(...,MSG_ZEROCOPY) to fail on using > zero-copy, which causes it to fall back to the default copying mechanism. > > After each full dirty-bitmap scan there should be a zero-copy flush > happening, which checks for errors each of the previous calls to > sendmsg(...,MSG_ZEROCOPY). If all of them failed to use zero-copy, then > increment dirty_sync_missed_zero_copy migration stat to let the user know > about it. > > Signed-off-by: Leonardo Bras <leob...@redhat.com> > --- > migration/ram.h | 2 ++ > migration/multifd.c | 2 ++ > migration/ram.c | 5 +++++ > 3 files changed, 9 insertions(+)
Reviewed-by: Daniel P. Berrangé <berra...@redhat.com> With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
