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| author | Leonardo Bras | 2022-05-13 08:28:33 +0200 |
|---|---|---|
| committer | Dr. David Alan Gilbert | 2022-05-16 14:56:24 +0200 |
| commit | abb6295b3ace5d17c3a65936913fc346616dbf14 (patch) | |
| tree | 8941bfb37a0c529d12a1294378cc3a10fba12959 /monitor | |
| parent | QIOChannelSocket: Implement io_writev zero copy flag & io_flush for CONFIG_LINUX (diff) | |
| download | qemu-abb6295b3ace5d17c3a65936913fc346616dbf14.tar.gz qemu-abb6295b3ace5d17c3a65936913fc346616dbf14.tar.xz qemu-abb6295b3ace5d17c3a65936913fc346616dbf14.zip | |
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 'monitor')
| -rw-r--r-- | monitor/hmp-cmds.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c index 93061a11af..622c783c32 100644 --- a/monitor/hmp-cmds.c +++ b/monitor/hmp-cmds.c @@ -1309,6 +1309,12 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict *qdict) p->has_multifd_zstd_level = true; visit_type_uint8(v, param, &p->multifd_zstd_level, &err); break; +#ifdef CONFIG_LINUX + case MIGRATION_PARAMETER_ZERO_COPY_SEND: + p->has_zero_copy_send = true; + visit_type_bool(v, param, &p->zero_copy_send, &err); + break; +#endif case MIGRATION_PARAMETER_XBZRLE_CACHE_SIZE: p->has_xbzrle_cache_size = true; if (!visit_type_size(v, param, &cache_size, &err)) { |