This series allows ITS save/restore and migration use cases. It relies on not upstreamed kernel series ([1] & [2]) and QEMU not upstreamed series [3].
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(). The code is based on Vijaya's "GICv3 live migration support" series [3], based on v2.8.0-rc4. The series also uses one patch from Peter Xu that aims at allowing the explicit ordering of save/restore handlers [4], now upstreamed. That work was tested on Cavium ThunderX using virsh save/restore and virt-manager live migration. Best Regards Eric Host Kernel dependencies: - [1] [RFC 00/13] vITS save/restore (https://www.spinics.net/lists/arm-kernel/msg553854.html) - [2] [PATCH v10 0/8] arm/arm64: vgic: Implement API for vGICv3 live migration http://www.spinics.net/lists/arm-kernel/msg546383.html QEMU dependencies: - [3] [PATCH v6 0/2] GICv3 live migration support - [4] migration: allow to prioritize save state entries This QEMU series can be found at: https://github.com/eauger/qemu/tree/mig-gicv3-v6-its-rfc Eric Auger (4): linux-headers: Partial update for vITS save/restore hw/intc/arm_gicv3_kvm: Rename KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS hw/intc/arm_gicv3_its: Implement state save/restore 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 | 94 +++++++++++++++++++++++++++++++++- hw/intc/arm_gicv3_kvm.c | 2 +- include/hw/intc/arm_gicv3_its_common.h | 6 +++ include/migration/vmstate.h | 2 + linux-headers/asm-arm/kvm.h | 25 ++++++--- linux-headers/asm-arm64/kvm.h | 14 +++-- 8 files changed, 140 insertions(+), 15 deletions(-) -- 2.5.5