KVMGT gvt-g live migration
Bug #1742488 reported by
Paul Lai
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Incomplete
|
Undecided
|
Unassigned | ||
qemu (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
KVMGT gvt-g Live Migration is a valuable feature for a variety of use cases like load balancing, hardware failover, energy saving and geographic migration. To enable VGPU live migration, one new region is designed for vfio_mdev device status save and restore during the migration. And one new ioctl is added to help do the mdev device dirty page synchronization. Correspondingly, GVT implements a function to save/retore the device context in the new region.
Applied platform: BDW/SKL/KBL
Business value: Improve efficiency and reduce cost in VM maintenance by enabling live migration for Intel GPU accelerated VM.
affects: | xen (Ubuntu) → kvm (Ubuntu) |
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Hi,
the own website [1] still calls it "should be considered a work in progress. As such it is not a complete product nor should it be considered one. Extra care should be taken when testing and configuring a system to use the KVMGT project".
That said I'm not sure what is expected here. I assume you will continue to work on upstreaming this into the Kernel / Qemu and we will pick it up by that - right?
[1]: https:/ /01.org/ igvt-g/ blogs/wangbo85/ 2018/2018- q1-release- kvmgt-intel- gvt-g-kvm