KVM: s390: Fix return code for unknown ioctl numbers
This patch fixes the return code of kvm_arch_vcpu_ioctl in case of an unkown ioctl number. Signed-off-by: NCarsten Otte <cotte@de.ibm.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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