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Re: [Qemu-devel] [PATCH v6 0/2] GICv3 live migration support
From: |
Auger Eric |
Subject: |
Re: [Qemu-devel] [PATCH v6 0/2] GICv3 live migration support |
Date: |
Fri, 25 Nov 2016 10:56:10 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 |
Hi Vijay, Christoffer,
On 23/11/2016 13:39, address@hidden wrote:
> 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
thanks for for your replies and bouncing/forwarding the series again. I
now have all the pieces (??)
Thanks
Eric
>
> Patch 2, is based on below implementation.
> http://patchwork.ozlabs.org/patch/626746/
>
> Kernel patches version 6 implement this functionality.
>
> 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.
>
> 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
> KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO
> - Fixed bug with save/restore of edge_trigger
> Vijaya Kumar K (4):
> kernel: Add definitions for GICv3 attributes
> hw/intc/arm_gicv3_kvm: Implement get/put functions
> hw/intc/arm_gicv3_kvm: Save and Restore ICC_SRE_EL1 register
> hw/intc/arm_gicv3_kvm: Reset GICv3 cpu interface registers
>
> hw/intc/arm_gicv3_kvm.c | 600
> ++++++++++++++++++++++++++++++++++++-
> hw/intc/gicv3_internal.h | 1 +
> include/hw/arm/linux-boot-if.h | 28 ++
> include/hw/intc/arm_gicv3_common.h | 1 +
> linux-headers/asm-arm/kvm.h | 13 +
> linux-headers/asm-arm64/kvm.h | 13 +
> target-arm/cpu.c | 31 ++
> 7 files changed, 676 insertions(+), 11 deletions(-)
>
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