d68b43587a
Vtimer adjust is used in openEuler qemu-4.0.1, however kvm_adjvtime is introduced in openEuler qemu-4.1.0. To maintain the compatibility and enable cross version migration, let's enable vtimer adjust only if kvm_adjvtime is not enabled, otherwise there may be conflicts between vtimer adjust and kvm_adjvtime. After this modification: 1: openEuler qemu-4.0.1 use vtimer as the default virtual timer 2: openEuler qemu-4.1.0 use kvm_adjvtime as the defaut virtual timer Migration from openEuler qemu-4.0.1 to openEuler qemu-4.1.0 will be ok, but migration path from upstream qemu-4.0.1 to openEuler qemu-4..0.1 will be broken. Since openEuler qemu-4.1.0, kvm_adjvtime is used as the default virtual timer. So please upgrade to openEuler qemu-4.1.0 and use the virt-4.1 machine. Signed-off-by: Ying Fang <fangying1@huawei.com>