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vfio/migration: Block migration with vIOMMU

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Migrating with vIOMMU will require either tracking maximum
IOMMU supported address space (e.g. 39/48 address width on Intel)
or range-track current mappings and dirty track the new ones
post starting dirty tracking. This will be done as a separate
series, so add a live migration blocker until that is fixed.

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20230307125450.62409-14-joao.m.martins@oracle.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Joao Martins 2023-03-07 12:54:48 +00:00 • committed by Alex Williamson
parent b153402a89
commit e46883204c
4 changed files with 54 additions and 0 deletions
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2
include/hw/vfio/vfio-common.h
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@ -222,6 +222,8 @@ 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);
int vfio_block_giommu_migration(Error **errp);
void vfio_unblock_giommu_migration(void);
int64_t vfio_mig_bytes_transferred(void);
#ifdef CONFIG_LINUX