Re: [Qemu-arm] [Qemu-devel] [RFC v5 0/4] vITS save/restore

[Prakash B]

Verified on Cavium ThunderX platform
Continousily migrated Guest more than 500 times b/w different  hosts.
Please feel free to add  Tested-by: Prakash, Brahmajyosyula
<address@hidden>

On Fri, Apr 14, 2017 at 6:16 PM, Eric Auger <address@hidden> wrote:
> This series allows ITS save/restore and migration use cases.
> It relies on not upstreamed kernel series [1].
>
> ITS tables are flushed into guest RAM on VM stop while registers
> are save on pre_save() callback. Tables and registers are restored
> on ITS post_load().
>
> Redistributor pending tables also are flushed on VM stop, independently
> on ITS tables.
>
> That work was tested on Cavium ThunderX using virsh save/restore and
> virt-manager live migration.
>
> Best Regards
>
> Eric
>
> Host Kernel dependencies:
> - [1] [PATCH v5 00/22] vITS save/restore
>
> History:
> v4 -> v5:
> - adapt to the new user API
> - new patch "hw/intc/arm_gicv3_kvm: Implement pending table save"
>   as the pending table save now is handled on GICV3 side.
>
> v3 -> v4:
> - oversight in v3, missed a last minute correction related to
>   reg useless declaration in kvm_arm_its_pre_save
>
> v2 -> v3:
> - GITS_IIDR is now saved and restored to check ABI revision.
> - get/put functions renamed into pre_save/post_load
> - unmigratable = false removed
> - changed the migration blocker message
> - remove the extract64 round s->ctlr
> - reword some comments
>
> v1 -> v2:
> - rebase on 2.9 soft release code
> - handle case where migrate_add_blocker fails
> - add comments along with ITS and GICv3 migration priorities
>
>
> Eric Auger (4):
>   linux-headers: Update for vITS save/restore
>   hw/intc/arm_gicv3_its: Implement state save/restore
>   hw/intc/arm_gicv3_kvm: Implement pending table save
>   hw/intc/arm_gicv3_its: Allow save/restore
>
>  hw/intc/arm_gicv3_common.c             |   1 +
>  hw/intc/arm_gicv3_its_common.c         |  11 ++-
>  hw/intc/arm_gicv3_its_kvm.c            | 120 
> +++++++++++++++++++++++++++++----
>  hw/intc/arm_gicv3_kvm.c                |  25 +++++++
>  include/hw/intc/arm_gicv3_its_common.h |   8 +++
>  include/migration/vmstate.h            |   2 +
>  linux-headers/asm-arm/kvm.h            |   6 +-
>  linux-headers/asm-arm64/kvm.h          |   6 +-
>  8 files changed, 164 insertions(+), 15 deletions(-)
>
> --
> 2.5.5
>
>