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From: Auger Eric <eric.auger@redhat.com>
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Date: Tue, 28 Mar 2017 13:59:11 +0200
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Subject: Re: [Qemu-devel] Aarch64: Qemu master or 2.9.0-rc1 breaks
 compatibility with 4.10 kernel.
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To: Peter Maydell <peter.maydell@linaro.org>, Prakash B <bjsprakash.linux@gmail.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>, bprakash@caviumnetworks.com, QEMU Developers <qemu-devel@nongnu.org>, "Kumar, Vijaya" <Vijaya.Kumar@cavium.com>, qemu-arm <qemu-arm@nongnu.org>, sgoutham@cavium.com, "kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>, Christoffer Dall <christoffer.dall@linaro.org>

Hi Peter,

On 28/03/2017 13:29, Peter Maydell wrote:
> On 28 March 2017 at 12:22, Prakash B <bjsprakash.linux@gmail.com> wrote:
>> Qemu master or v2.9.0-rc1 doesn't launch guest  when host kernel
>> version 4.10 or  lower on Aarch64 (cavium ThunderX), its failing with
>> abort  "qemu-system-aarch64: KVM_GET_DEVICE_ATTR failed: No such
>> device or address"
>>
>> "GICv3 live migration support"  patch breaks the  compatibility b/w
>> kernel and qemu.
>>
>> Is this expected behaviour,  can we provide a fix without  breaking
>> compatibility b/w kernel and qemu .
> 
> This is indeed not supposed to happen. Eric, can you take a look?

Yes I start the investigations.

Thanks

Eric
> 
> thanks
> -- PMM
>