On 28.02.2013, at 17:23, Scott Wood wrote:
> On 02/27/2013 10:13:11 PM, Bharat Bhushan wrote:
>> diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
>> index 8b553c0..a41cd6d 100644
>> --- a/arch/powerpc/kvm/booke.c
>> +++ b/arch/powerpc/kvm/booke.c
>> @@ -1448,6 +1448,12 @@ 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;
>> + }
>
> We're using ehpriv even for PR-mode KVM (e.g. e500v2)?
If it's a reserved instruction, that should work. Since we need to use a single instruction to replace the debugged one with, any reserved opcode should be as good as any other, right?
Alex
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