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| author | Maciej S. Szmigiero <maciej.szmigiero@oracle.com> | 2025-03-04 23:03:56 +0100 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2025-03-06 06:47:34 +0100 |
| commit | b659c07c534490369ca0954f0116b05c4a063065 (patch) | |
| tree | 267f17e5b9baae283719ec4f8a2f01de5b83769f /hw/vfio/migration.c | |
| parent | fda70ed83d54abad6bf2d437a7c05204b0fad228 (diff) | |
| download | qemu-b659c07c534490369ca0954f0116b05c4a063065.zip qemu-b659c07c534490369ca0954f0116b05c4a063065.tar.gz qemu-b659c07c534490369ca0954f0116b05c4a063065.tar.bz2 | |
vfio/migration: Multifd device state transfer support - config loading support
Load device config received via multifd using the existing machinery
behind vfio_load_device_config_state().
Also, make sure to process the relevant main migration channel flags.
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/5dbd3f3703ec1097da2cf82a7262233452146fee.1741124640.git.maciej.szmigiero@oracle.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Diffstat (limited to 'hw/vfio/migration.c')
| -rw-r--r-- | hw/vfio/migration.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index 815ad8f..2ca3fa0 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -264,7 +264,7 @@ static int vfio_save_device_config_state(QEMUFile *f, void *opaque, return ret; } -static int vfio_load_device_config_state(QEMUFile *f, void *opaque) +int vfio_load_device_config_state(QEMUFile *f, void *opaque) { VFIODevice *vbasedev = opaque; uint64_t data; @@ -723,6 +723,13 @@ static int vfio_load_state(QEMUFile *f, void *opaque, int version_id) switch (data) { case VFIO_MIG_FLAG_DEV_CONFIG_STATE: { + if (vfio_multifd_transfer_enabled(vbasedev)) { + error_report("%s: got DEV_CONFIG_STATE in main migration " + "channel but doing multifd transfer", + vbasedev->name); + return -EINVAL; + } + return vfio_load_device_config_state(f, opaque); } case VFIO_MIG_FLAG_DEV_SETUP_STATE: |