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

Il 18/09/2013 16:30, Jan Beulich ha scritto:
On 18.09.13 at 16:12, Fabio Fantoni <fabio.fantoni@xxxxxxx> wrote:
Il 18/09/2013 14:42, Jan Beulich ha scritto:
On 18.09.13 at 14:29, Fabio Fantoni <fabio.fantoni@xxxxxxx> 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

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:

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.

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