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[RFC,06/10] KVM: PPC: BOOK3S: PR: Emulate DPDES register

Message ID 1390927455-3312-7-git-send-email-aneesh.kumar@linux.vnet.ibm.com
State New, archived
Headers show

Commit Message

Aneesh Kumar K.V Jan. 28, 2014, 4:44 p.m. UTC 
Since we don't support SMT yet, we should always find zero in
Directed privileged doorbell exception state register.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 arch/powerpc/kvm/book3s_emulate.c | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c
index 9cf0392e3dcf..7f25adbd2590 100644
--- a/arch/powerpc/kvm/book3s_emulate.c
+++ b/arch/powerpc/kvm/book3s_emulate.c
@@ -585,6 +585,12 @@  int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val
 		 */
 		*spr_val = 0;
 		break;
+	case SPRN_DPDES:
+		/*
+		 * We don't have SMT support for PR yet, hence always return 0
+		 */
+		*spr_val = 0;
+		break;
 	default:
 unprivileged:
 		printk(KERN_INFO "KVM: invalid SPR read: %d\n", sprn);