[Qemu-devel] [RFC PATCH v4 0/2] GICv3 live migration support

[vijay . kilari]

From: Vijaya Kumar K <address@hidden>

This series introduces support for GICv3 live migration with
new VGIC implementation in 4.7-rc3 kernel.
In this series, patch 1 of the previous implementation
are ported.
https://lists.nongnu.org/archive/html/qemu-devel/2015-10/msg05284.html

Patch 2, is based on below implementation.
http://patchwork.ozlabs.org/patch/626746/

Kernel patches which implement this functionality are:
http://www.spinics.net/lists/arm-kernel/msg519596.html

This API definition is as per version of VGICv3 specification
http://lists.infradead.org/pipermail/linux-arm-kernel/2016-July/445611.html

Patch 1 of this series will be synced with KVM patches
in next revision.

Tested Live migration of Idle VM running with 4 VCPUs and 8GB RAM.

v3 => v4:
 - Reintroduced offset GICR_SGI_OFFSET
 - Implement save and restore of ICC_SRE_EL1
 - Updated kvm.h header file in sync with KVM v4 patches

v2 => v3:
 - Dropped offset GICR_SGI_OFFSET
 - Implement save/restore of irq line level using
   KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO
 - Fixed bug with save/restore of edge_trigger

Vijaya Kumar K (2):
  kernel: Add definitions for GICv3 attributes
  hw/intc/arm_gicv3_kvm: Implement get/put functions

 hw/intc/arm_gicv3_kvm.c            | 530 ++++++++++++++++++++++++++++++++++++-
 include/hw/intc/arm_gicv3_common.h |   1 +
 linux-headers/asm-arm64/kvm.h      |  13 +
 3 files changed, 534 insertions(+), 10 deletions(-)

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1.9.1