Amdcpu kvm & openstack virtualization nesting error [How to Solve]

Create instance error
Exceeded maximum number of retries. Exhausted all hosts available for retrying build failures for instance 82438533-1d24-417f-9e33-f98110e10160.].
nova.compute log:

ERROR nova.compute.manager [instance: 82438533-1d24-417f-9e33-f98110e10160] qemu-kvm: ../target/i386/kvm/kvm.c:2778: kvm_buf_set_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.

Solution:

sudo tee /etc/modprobe.d/qemu-system-x86.conf << EOF
options kvm ignore_msrs=1
EOF

Reboot
the instance was created successfully

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