diff options
| author | Avihai Horon <avihaih@nvidia.com> | 2023-02-16 16:36:24 +0200 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2023-02-16 12:13:46 -0700 |
| commit | 29d81b71aa2ac0f594d881460e22e291a9417a74 (patch) | |
| tree | 1bcd3ff61c989937cf78a04702c20d451b652fc9 /include/hw/vfio | |
| parent | 8b942af393a2d9f822aea4e5e0d241e668146bf2 (diff) | |
vfio/migration: Block multiple devices migration
Currently VFIO migration doesn't implement some kind of intermediate
quiescent state in which P2P DMAs are quiesced before stopping or
running the device. This can cause problems in multi-device migration
where the devices are doing P2P DMAs, since the devices are not stopped
together at the same time.
Until such support is added, block migration of multiple devices.
Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Link: https://lore.kernel.org/r/20230216143630.25610-6-avihaih@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'include/hw/vfio')
| -rw-r--r-- | include/hw/vfio/vfio-common.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index e573f5a9f1..56b1683824 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -218,6 +218,8 @@ typedef QLIST_HEAD(VFIOGroupList, VFIOGroup) VFIOGroupList; extern VFIOGroupList vfio_group_list; bool vfio_mig_active(void); +int vfio_block_multiple_devices_migration(Error **errp); +void vfio_unblock_multiple_devices_migration(void); int64_t vfio_mig_bytes_transferred(void); #ifdef CONFIG_LINUX |