Added ONE_REG interface for debug instruction

This patch adds the one_reg interface to get the special instruction
to be used for setting software breakpoint from userspace.

Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 58057d6f146d..a49a68a25c39 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -1447,6 +1447,12 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
         case KVM_REG_PPC_TSR:
                 r = put_user(vcpu->arch.tsr, (u32 __user *)(long)reg->addr);
                 break;
+        case KVM_REG_PPC_DEBUG_INST: {
+                u32 opcode = KVMPPC_INST_EHPRIV;
+                r = copy_to_user((u32 __user *)(long)reg->addr,
+                                 &opcode, sizeof(u32));
+                break;
+        }
         default:
                 break;
         }