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(). Cc: Michael S. Tsirkin <mst@xxxxxxxxxx> Suggested-by: Paul Mackerras <paulus@xxxxxxxxx> Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx> --- This definitely needs a better commit message. Please, help. ps. it seems like ioeventfd never worked on ppc64. hm. --- 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 072287f..24f363f 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -1569,7 +1569,7 @@ 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 ((r == RESUME_GUEST_NV) || (r == RESUME_GUEST)); out: vcpu->arch.state = KVMPPC_VCPU_NOTREADY; -- 1.8.4.rc4 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
