>>> On 9/8/2013 at 07:13 AM, Gleb Natapov <[email protected]> wrote: 
> On Tue, Sep 03, 2013 at 01:42:09PM -0600, Bruce Rogers wrote:
>> Opcode CA
>> 
>> This gets used by a DOS based NetWare guest.
>> 
>> Signed-off-by: Bruce Rogers <[email protected]>
>> ---
>>  arch/x86/kvm/emulate.c |   23 ++++++++++++++++++++++-
>>  1 files changed, 22 insertions(+), 1 deletions(-)
>> 
>> diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
>> index 2bc1e81..aee238a 100644
>> --- a/arch/x86/kvm/emulate.c
>> +++ b/arch/x86/kvm/emulate.c
>> @@ -2025,6 +2025,26 @@ static int em_ret_far(struct x86_emulate_ctxt *ctxt)
>>      return rc;
>>  }
>>  
>> +static int em_ret_far_imm(struct x86_emulate_ctxt *ctxt)
>> +{
>> +        int rc;
>> +        unsigned long cs;
>> +
>> +        rc = emulate_pop(ctxt, &ctxt->_eip, ctxt->op_bytes);
>> +        if (rc != X86EMUL_CONTINUE)
>> +                return rc;
>> +        if (ctxt->op_bytes == 4)
>> +                ctxt->_eip = (u32)ctxt->_eip;
>> +        rc = emulate_pop(ctxt, &cs, ctxt->op_bytes);
>> +        if (rc != X86EMUL_CONTINUE)
>> +                return rc;
>> +        rc = load_segment_descriptor(ctxt, (u16)cs, VCPU_SREG_CS);
>> +        if (rc != X86EMUL_CONTINUE)
>> +                return rc;
>> +        rsp_increment(ctxt, ctxt->src.val);
>> +        return X86EMUL_CONTINUE;
>> +}
>> +
> Why not:
> 
> static int em_ret_far_imm(struct x86_emulate_ctxt *ctxt)
> {
>       int rc;
>       rc = em_ret_far(struct x86_emulate_ctxt *ctxt);
>       if (rc != X86EMUL_CONTINUE)
>               return rc;
>       rsp_increment(ctxt, ctxt->src.val);
>       return X86EMUL_CONTINUE;
> }
> 
> --
>                       Gleb.

Yes, that does seem better. Ack.

Bruce

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