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| author | Maciej S. Szmigiero <maciej.szmigiero@oracle.com> | 2025-03-04 23:03:43 +0100 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2025-03-06 06:47:33 +0100 |
| commit | a1131aa94256d1007b4267ff9e79c3b4ada6e2b9 (patch) | |
| tree | f45daab2906e533a2cf7787e69cfb9d06d46b7d7 | |
| parent | 99fab22350e4eed1d8a238ed97c77b1a5ee77dd4 (diff) | |
| download | qemu-a1131aa94256d1007b4267ff9e79c3b4ada6e2b9.zip qemu-a1131aa94256d1007b4267ff9e79c3b4ada6e2b9.tar.gz qemu-a1131aa94256d1007b4267ff9e79c3b4ada6e2b9.tar.bz2 | |
migration/multifd: Add multifd_device_state_supported()
Since device state transfer via multifd channels requires multifd
channels with packets and is currently not compatible with multifd
compression add an appropriate query function so device can learn
whether it can actually make use of it.
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Link: https://lore.kernel.org/qemu-devel/1ff0d98b85f470e5a33687406e877583b8fab74e.1741124640.git.maciej.szmigiero@oracle.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
| -rw-r--r-- | include/migration/misc.h | 1 | ||||
| -rw-r--r-- | migration/multifd-device-state.c | 7 |
2 files changed, 8 insertions, 0 deletions
diff --git a/include/migration/misc.h b/include/migration/misc.h index bd3b725..273ebfc 100644 --- a/include/migration/misc.h +++ b/include/migration/misc.h @@ -121,5 +121,6 @@ bool migrate_uri_parse(const char *uri, MigrationChannel **channel, /* migration/multifd-device-state.c */ bool multifd_queue_device_state(char *idstr, uint32_t instance_id, char *data, size_t len); +bool multifd_device_state_supported(void); #endif diff --git a/migration/multifd-device-state.c b/migration/multifd-device-state.c index 64d8ca1..3097ffa 100644 --- a/migration/multifd-device-state.c +++ b/migration/multifd-device-state.c @@ -13,6 +13,7 @@ #include "qemu/lockable.h" #include "migration/misc.h" #include "multifd.h" +#include "options.h" static struct { QemuMutex queue_job_mutex; @@ -111,3 +112,9 @@ bool multifd_queue_device_state(char *idstr, uint32_t instance_id, return true; } + +bool multifd_device_state_supported(void) +{ + return migrate_multifd() && !migrate_mapped_ram() && + migrate_multifd_compression() == MULTIFD_COMPRESSION_NONE; +} |