Re: [Qemu-devel] [Bug 1673722] [NEW] Reading register at offset. It is not fully implemented warning make VM impossible to use

[Peter Maydell]

On 20 March 2017 at 14:20, Stefan Hajnoczi <address@hidden> wrote:
> On Fri, Mar 17, 2017 at 09:47:14AM -0000, Julien Duponchelle wrote:
>> Hi,
>>
>> Since this commit:
>> https://github.com/qemu/qemu/commit/bc0f0674f037a01f2ce0870ad6270a356a7a8347
>>
>> We can no longer use the IOSvL2 image from Cisco. The problem is we got a 
>> lot of warning message saying:
>> e1000: Reading register at offset: 0x00002410. It is not fully implemented.
>>
>> User got so much of this warning that they can't use the VM.
>
> CCing the author and maintainers.
>
> DBGOUT() is compiled in by default.  Warnings that can be triggered at a
> high rate by the guest should be off by default or use a
> printf_once()-style macro so they are only printed once and not again.
>
> Leonid: do you want to adjust e1000 DBGOUT() usage to avoid printing
> guest-triggerable messages by default?

If we want to report "whoops, we don't implement this yet" messages then
the recommended way to do that is
 qemu_log_mask(LOG_UNIMP, "....");

(these are not reported by default but only if the user asks for them.)

thanks
-- PMM