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| author | Leonardo Bras <leobras@redhat.com> | 2022-07-11 18:11:13 -0300 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2022-07-20 12:15:09 +0100 |
| commit | d59c40cc483729f2e67c80e58df769ad19976fe9 (patch) | |
| tree | 252bf54ccd0ff3a7f405dd8691a98dcbad79e595 /scripts/oss-fuzz | |
| parent | cf20c897338067ab4b70a4596fdccaf90c7e29a1 (diff) | |
| download | focaccia-qemu-d59c40cc483729f2e67c80e58df769ad19976fe9.tar.gz focaccia-qemu-d59c40cc483729f2e67c80e58df769ad19976fe9.zip | |
migration/multifd: Report to user when zerocopy not working
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 <leobras@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Acked-by: Peter Xu <peterx@redhat.com> Message-Id: <20220711211112.18951-4-leobras@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'scripts/oss-fuzz')
0 files changed, 0 insertions, 0 deletions