On 5/23/2014 8:19 AM, Prashant Upadhyaya wrote:
Hi,
Is it possible to live migrate a VM (emulating AMD) running on native
AMD to a machine running native ARM and back with QEMU ?
I believe a clarification is needed here.
What is it you want to do:
A) Migrate the VM from qemu-system-x86_64 software emulating an
AMD64 guest on an AMD64 host to qemu-system-x86_64 software
emulating the same AMD64 guest on an ARM host.
B) Migrate the VM from qemu-system-x86_64 KVM emulating an
AMD64 guest on an AMD64 host to qemu-system-x86_64 software
emulating the same AMD64 guest on an ARM host
C) Migrate the VM from qemu-system-x86_64 emulating an
AMD64 guest on an AMD64 host to qemu-system-arm emulating
an ARM guest on an ARM host.
C) Is mostly impossible, because the Guest memory needs to contain
completely different code when the virtual machine suddenly
swaps its (virtual) CPU from AMD64 to ARM.
A) Might be possible, unless there is some oddity in the qemu code
which transmits the virtual machine state differently depending
on the Host architecture.
B) Might be more difficult, if the qemu code transmits KVM virtual
machine state differently from equivalent software emulated
virtual machine state.
Enjoy
Jakob
--
Jakob Bohm, CIO, Partner, WiseMo A/S. http://www.wisemo.com
Transformervej 29, 2730 Herlev, Denmark. Direct +45 31 13 16 10
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