diff options
| author | Leonardo Bras <leobras@redhat.com> | 2022-05-13 03:28:33 -0300 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2022-05-16 13:56:24 +0100 |
| commit | abb6295b3ace5d17c3a65936913fc346616dbf14 (patch) | |
| tree | 8941bfb37a0c529d12a1294378cc3a10fba12959 /migration/migration.h | |
| parent | 2bc58ffc2926a4efdd03edfb5909861fefc68c3d (diff) | |
migration: Add zero-copy-send parameter for QMP/HMP for Linux
Add property that allows zero-copy migration of memory pages
on the sending side, and also includes a helper function
migrate_use_zero_copy_send() to check if it's enabled.
No code is introduced to actually do the migration, but it allow
future implementations to enable/disable this feature.
On non-Linux builds this parameter is compiled-out.
Signed-off-by: Leonardo Bras <leobras@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220513062836.965425-5-leobras@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'migration/migration.h')
| -rw-r--r-- | migration/migration.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/migration/migration.h b/migration/migration.h index a863032b71..e8f2941a55 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -375,6 +375,11 @@ MultiFDCompression migrate_multifd_compression(void); int migrate_multifd_zlib_level(void); int migrate_multifd_zstd_level(void); +#ifdef CONFIG_LINUX +bool migrate_use_zero_copy_send(void); +#else +#define migrate_use_zero_copy_send() (false) +#endif int migrate_use_xbzrle(void); uint64_t migrate_xbzrle_cache_size(void); bool migrate_colo_enabled(void); |