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| author | Sebastien Boeuf <sebastien.boeuf@intel.com> | 2023-01-03 13:51:07 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-02-21 03:26:56 +0300 |
| commit | 3b688d7a086d0438649ea37990c6e811954fc780 (patch) | |
| tree | bccd58f19543398649064ed4e3f9e3c30416f5f9 /drivers/vdpa | |
| parent | 69106b6fb3d73bd4252daa48ae96e600c9701147 (diff) | |
| download | linux-3b688d7a086d0438649ea37990c6e811954fc780.tar.xz | |
vhost-vdpa: uAPI to resume the device
This new ioctl adds support for resuming the device from userspace.
This is required when trying to restore the device in a functioning
state after it's been suspended. It is already possible to reset a
suspended device, but that means the device must be reconfigured and
all the IOMMU/IOTLB mappings must be recreated. This new operation
allows the device to be resumed without going through a full reset.
This is particularly useful when trying to perform offline migration of
a virtual machine (also known as snapshot/restore) as it allows the VMM
to resume the virtual machine back to a running state after the snapshot
is performed.
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Message-Id: <73b75fb87d25cff59768b4955a81fe7ffe5b4770.1672742878.git.sebastien.boeuf@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Diffstat (limited to 'drivers/vdpa')
0 files changed, 0 insertions, 0 deletions