From: Alexey Kardashevskiy <a...@ozlabs.ru>

When write to MMIO happens and there is an ioeventfd for that and
is handled successfully, ioeventfd_write() returns 0 (success) and
kvmppc_handle_store() returns EMULATE_DONE. Then kvmppc_emulate_mmio()
converts EMULATE_DONE to RESUME_GUEST_NV and this broke from the loop.

This adds handling of RESUME_GUEST_NV in kvmppc_vcpu_run_hv().

changes in v2:
        - as suggesed by Alex Graf on kvm-ppc@, do it with a
          helper

Cc: Michael S. Tsirkin <m...@redhat.com>
Suggested-by: Paul Mackerras <pau...@samba.org>
Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
Signed-off-by: Greg Kurz <gk...@linux.vnet.ibm.com>
---
 arch/powerpc/kvm/book3s_hv.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 17fc949..d62dc6c 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -1731,7 +1731,7 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct 
kvm_vcpu *vcpu)
                                vcpu->arch.fault_dar, vcpu->arch.fault_dsisr);
                        srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
                }
-       } while (r == RESUME_GUEST);
+       } while (is_kvmppc_resume_guest(r));
 
  out:
        vcpu->arch.state = KVMPPC_VCPU_NOTREADY;

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