KVM: PPC: Book3S: Ignore DABR register

We don't emulate breakpoints yet, so just ignore reads and writes
to / from DABR.

This fixes booting of more recent Linux guest kernels for me.

Reported-by: Nello Martuscielli <ppc.addon@gmail.com>
Tested-by: Nello Martuscielli <ppc.addon@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c
index 1f6344c4408d..360ce68c9809 100644
--- a/arch/powerpc/kvm/book3s_emulate.c
+++ b/arch/powerpc/kvm/book3s_emulate.c
@@ -458,6 +458,7 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
         case SPRN_PMC4_GEKKO:
         case SPRN_WPAR_GEKKO:
         case SPRN_MSSSR0:
+        case SPRN_DABR:
                 break;
 unprivileged:
         default:
@@ -555,6 +556,7 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
         case SPRN_PMC4_GEKKO:
         case SPRN_WPAR_GEKKO:
         case SPRN_MSSSR0:
+        case SPRN_DABR:
                 *spr_val = 0;
                 break;
         default: