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target-arm: kvm: save/restore mp state
This adds the saving and restore of the current Multi-Processing state of the machine. While the KVM_GET/SET_MP_STATE API exposes a number of potential states for x86 we only use two for ARM. Either the process is running or not. We then save this state into the cpu_powered TCG state to avoid changing the serialisation format. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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