Re: [Qemu-devel] [Xen-devel] [PATCH] libxl: Remove qxl support for the 4.3 release

[Fabio Fantoni <fabio.fantoni@m2r.biz>]

Il 18/09/2013 16:30, Jan Beulich ha scritto:
>>>> On 18.09.13 at 16:12, Fabio Fantoni <fabio.fantoni@m2r.biz> wrote:
>> Il 18/09/2013 14:42, Jan Beulich ha scritto:
>>>>>> On 18.09.13 at 14:29, Fabio Fantoni <fabio.fantoni@m2r.biz> wrote:
>>>> I not see the MMIO error on logs, what must I do to see it or any
>>>> similar debug information?
>>>> Tell me if I must do other specific test or you need other details.
>>> Without the patch you ought to have seen "bad mmio size ..."
>> I was unable to see the MMIO error on each log files also before the patch.
>> I don't know if I have enable sufficent debug to log them.
>> And I have no ideaon how to do it.
> This is a guest warning (from log level perspective), so by default
> would be visible in a rate limited fashion. If you want to be certain,
> just add "loglvl=all guest_loglvl=all". But I'm more and more
> convinced that the information we got from you originally was
> misleading.

On grub.cfg now I have:
...
multiboot       /boot/xen.gz placeholder dom0_mem=4G,max:4G loglvl=all 
guest_loglvl=all
...
But I'm unable to see debug related information in log files.
This was the test of Anthony Perard with all details about the problem:
http://lists.xen.org/archives/html/xen-devel/2013-05/msg02050.html

So my questions are:
- Is your patch aimed to completely solve cpus instrictions with MMIO 
operands > 8 byte or
- does it need also some qemu changes?
I also added qemu-devel and anthony perard on cc.
Thanks for any reply.


>
>> Is there another method to test effettive working of SSE >=2 istructions?
> You realize that we're not talking about arbitrary SSE instructions,
> but only such with their memory operand being in MMIO space.
> Anything else doesn't hit the emulator.
> Jan
>