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vfio: Add migration region initialization and finalize function

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Whether the VFIO device supports migration or not is decided based of
migration region query. If migration region query is successful and migration
region initialization is successful then migration is supported else
migration is blocked.

Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com>
Reviewed-by: Neo Jia <cjia@nvidia.com>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Kirti Wankhede 2020-10-26 15:06:14 +05:30 • committed by Alex Williamson
parent c5e2fb3ce4
commit a9e271ec9b
4 changed files with 135 additions and 0 deletions
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9
include/hw/vfio/vfio-common.h
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@ -57,6 +57,10 @@ typedef struct VFIORegion {
uint8_t nr; /* cache the region number for debug */
} VFIORegion;
typedef struct VFIOMigration {
VFIORegion region;
} VFIOMigration;
typedef struct VFIOAddressSpace {
AddressSpace *as;
QLIST_HEAD(, VFIOContainer) containers;
@ -113,6 +117,8 @@ typedef struct VFIODevice {
unsigned int num_irqs;
unsigned int num_regions;
unsigned int flags;
VFIOMigration *migration;
Error *migration_blocker;
} VFIODevice;
struct VFIODeviceOps {
@ -204,4 +210,7 @@ int vfio_spapr_create_window(VFIOContainer *container,
int vfio_spapr_remove_window(VFIOContainer *container,
hwaddr offset_within_address_space);
int vfio_migration_probe(VFIODevice *vbasedev, Error **errp);
void vfio_migration_finalize(VFIODevice *vbasedev);
#endif /* HW_VFIO_VFIO_COMMON_H */