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[Qemu-devel] [PATCH v7 0/4] GICv3 live migration support

From: vijay . kilari
Subject: [Qemu-devel] [PATCH v7 0/4] GICv3 live migration support
Date: Tue, 31 Jan 2017 21:35:45 +0530

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.

Patch 2, is based on below implementation.

Latest kernel patches

This API definition is as per version of VGICv3 specification
in linux kernel Documentation/virtual/kvm/devices/arm-vgic-v3.txt

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

v6 => v7:
 - Added patch to add icc_ctrl_el1 to vmstruct before live migration
 - Added patch to add gicv3state variable to CPUARMState struct to
   store GICv3CPUState pointer.
 - Added patch to register ARMCPRegInfo[] struct and reset on CPU reset.

v5 => v6:
 - Added separate patch for Reseting ICC* register
 - Added seperate patch for save and restore of ICC_CTLR_EL1
 - Dropped translate_fn mechanism and coded open functions
   for edge_trigger and priority save and restore.
 - Save and Restore APnR registers based on ICC_CTLR_EL1.PRIBITS

v4 => v5:
 - Initialized ICC registers before reset.

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
 - Fixed bug with save/restore of edge_trigger

Vijaya Kumar K (4):
  hw/intc/arm_gicv3_kvm: Add ICC_SRE_EL1 register to vmstate
  hw/intc/arm_gicv3_kvm: Implement get/put functions
  target-arm: Add GICv3CPUState in CPUARMState struct
  hw/intc/arm_gicv3_kvm: Reset GICv3 cpu interface registers

 hw/intc/arm_gicv3_common.c         |   1 +
 hw/intc/arm_gicv3_kvm.c            | 640 ++++++++++++++++++++++++++++++++++++-
 hw/intc/gicv3_internal.h           |   1 +
 include/hw/intc/arm_gicv3_common.h |   1 +
 target-arm/cpu.h                   |   2 +
 5 files changed, 634 insertions(+), 11 deletions(-)


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