kvm: don't try to register to KVM_FAST_MMIO_BUS for non mmio eventfd

We only want zero length mmio eventfd to be registered on
KVM_FAST_MMIO_BUS. So check this explicitly when arg->len is zero to
make sure this.

Cc: [email protected]
Cc: Gleb Natapov <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Signed-off-by: Jason Wang <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>

0 files changed, 0 insertions, 0 deletions