Re: [Xen-devel] About Xen bridged pci devices and suspend/resume for the X10SAE motherboard (SuperMicro)

["M. Ivanov" <mihail.ivanov93@xxxxxxxxx>]

On Thu, 2015-08-13 at 15:49 -0400, Konrad Rzeszutek Wilk wrote:
> On Mon, Aug 10, 2015 at 09:21:35PM +0300, M. Ivanov wrote:
> > On Mon, 2015-08-10 at 10:47 -0400, Konrad Rzeszutek Wilk wrote:
> > > On Mon, Aug 10, 2015 at 05:14:28PM +0300, M. Ivanov wrote:
> > > > On Mon, 2015-08-10 at 09:58 -0400, Konrad Rzeszutek Wilk wrote:
> > > > > On Mon, Aug 10, 2015 at 02:11:38AM +0300, M. Ivanov wrote:
> > > > > > Hello,
> > > > > > 
> > > > > > excuse me for bothering you, but I've read an old thread on a 
> > > > > > mailing
> > > > > > list about X10SAE compatibility. 
> > > > > > http://lists.xen.org/archives/html/xen-devel/2014-02/msg02111.html
> > > > > 
> > > > > CC-ing Xen devel.
> > > > > > 
> > > > > > Currently I own this board and am trying to use it with Xen and be 
> > > > > > able
> > > > > > to suspend and resume.
> > > > > > 
> > > > > > But I am getting errors from the USB 3 Renesas controller about 
> > > > > > parity
> > > > > > in my bios event log, and my system hangs on resume,
> > > > > > so I was wondering if that is connected to the bridge(tundra) you've
> > > > > > mentioned.
> > > > > 
> > > > > Did you update the BIOS to the latest version?
> > > > Will updating to version 3 solve my issue?
> > > > Can you do a suspend/resume on your X10SAE?
> > > 
> > > It did work at some point. I will find out when I am at home later today.
> > > 
> > Looking forward to your reply and am really thankful for your time,
> > so far I've tried changing many of the settings in the bios,
> > fiddling with Xen's kernel params,
> > blacklisting the xhci driver, doing a xl detach.
> > 
> > The only thing I haven't done yet is updating the bios,
> > but Supermicro's support couldn't give me a changelog:
> > 
> > "The primary objective for ver3.0 BIOS release is to support Intel
> > Broadwell CPUs"
> > "We do not know if BIOS update will fix the issue you are seeing as we
> > never tested it with Xen."
> 
> I did test it remotely and it did something very odd. It suspended and then
> immediately resumed with tons of VT-d errors!?
> 
> I will try again but be actually right by it.
Thanks for your effort,
Can you suggest a way for me to log what is happening?

Since my machine just hangs up and I don't get a picture on the screen.
Or when I do(sometimes) - it's just a cursor,(on a black screen with
nothing else,no errors shown) and the machine doesn't react to any key
combinations.

On a side note:

I did try updating the bios,
but got some really strange result.
The first time I got checksums about everything OK,
(erase,flash,verify),
but then it said - FDT is locked!
And I am at least 90% sure I've enabled reflash in 
the BIOS setup prior to flashing.
So I've restarted but didn't clear the CMOS(through the jumper on the
board). And it said Bios v 3.0 in the setup, then I also did the
Reset to optmized defaults.

Tried suspending and couldn't resume like always.
But perhaps currently my BIOS is in a broken/corrupted state.

After that I've tried reflashing the bios again. But this time - 
after the messages about Erasing,Flashing,Verifying:
it just froze. I didn't get any message about FDT, restarting or
whatsoever.

So I rebooted and it seems to work like before,
says version 3.0 in the BIOS setup.
I wonder if I should try clearing the CMOS and
flashing again.

> > > > > > 
> > > > > > I will be very glad if you could share any information regarding 
> > > > > > this
> > > > > > matter. 
> > > > > > 
> > > > > > Best regards,
> > > > > > M. Ivanov
> > > > > 
> > > > > 
> > > > 
> > > 
> > > 
> > 
> 
>

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