From: Alexander Graf <agraf@suse.de>
Date: Mon, 8 Aug 2011 15:22:59 +0000 (+0200)
Subject: KVM: PPC: Stub emulate CFAR and PURR SPRs
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=aacf9aa3a7762a878c40fddef6e68262b9f9f383;p=linux-beck.git

KVM: PPC: Stub emulate CFAR and PURR SPRs

Recent Linux versions use the CFAR and PURR SPRs, but don't really care about
their contents (yet). So for now, we can simply return 0 when the guest wants
to read them.

Signed-off-by: Alexander Graf <agraf@suse.de>
---

diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c
index bf0ddcd98bcc..0c9dc62532d0 100644
--- a/arch/powerpc/kvm/book3s_emulate.c
+++ b/arch/powerpc/kvm/book3s_emulate.c
@@ -473,6 +473,10 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
 	case SPRN_HID5:
 		kvmppc_set_gpr(vcpu, rt, to_book3s(vcpu)->hid[5]);
 		break;
+	case SPRN_CFAR:
+	case SPRN_PURR:
+		kvmppc_set_gpr(vcpu, rt, 0);
+		break;
 	case SPRN_GQR0:
 	case SPRN_GQR1:
 	case SPRN_GQR2: