[PATCH] PPC: KVM: fix VCPU run for HV KVM
From: Alexey Kardashevskiy
Date: Fri Jan 10 2014 - 02:21:26 EST
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 linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/