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| author | Maciej S. Szmigiero <maciej.szmigiero@oracle.com> | 2025-03-04 23:03:58 +0100 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2025-03-06 06:47:34 +0100 |
| commit | 623af41dd331d1a57a41bc3374e3d134adb33f4c (patch) | |
| tree | e78c17d5700329f110f707a197a72dbcd78bba51 /hw/vfio/pci.c | |
| parent | 6d644baef20303fa4b2b342f556e26c2262b439f (diff) | |
| download | focaccia-qemu-623af41dd331d1a57a41bc3374e3d134adb33f4c.tar.gz focaccia-qemu-623af41dd331d1a57a41bc3374e3d134adb33f4c.zip | |
vfio/migration: Add x-migration-multifd-transfer VFIO property
This property allows configuring whether to transfer the particular device state via multifd channels when live migrating that device. It defaults to AUTO, which means that VFIO device state transfer via multifd channels is attempted in configurations that otherwise support it. 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/d6dbb326e3d53c7104d62c96c9e3dd64e1c7b940.1741124640.git.maciej.szmigiero@oracle.com [ clg: Added documentation ] Signed-off-by: Cédric Le Goater <clg@redhat.com>
Diffstat (limited to 'hw/vfio/pci.c')
| -rw-r--r-- | hw/vfio/pci.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index c1cee280ae..1bbf15cea3 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -3381,6 +3381,9 @@ static const Property vfio_pci_dev_properties[] = { VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT, false), DEFINE_PROP_ON_OFF_AUTO("enable-migration", VFIOPCIDevice, vbasedev.enable_migration, ON_OFF_AUTO_AUTO), + DEFINE_PROP_ON_OFF_AUTO("x-migration-multifd-transfer", VFIOPCIDevice, + vbasedev.migration_multifd_transfer, + ON_OFF_AUTO_AUTO), DEFINE_PROP_BOOL("migration-events", VFIOPCIDevice, vbasedev.migration_events, false), DEFINE_PROP_BOOL("x-no-mmap", VFIOPCIDevice, vbasedev.no_mmap, false), @@ -3553,6 +3556,10 @@ static void vfio_pci_dev_class_init(ObjectClass *klass, void *data) "Skip config space check for Vendor Specific Capability. " "Setting to false will enforce strict checking of VSC content " "(DEBUG)"); + object_class_property_set_description(klass, /* 10.0 */ + "x-migration-multifd-transfer", + "Transfer this device state via " + "multifd channels when live migrating it"); } static const TypeInfo vfio_pci_dev_info = { |