Re: [Xen-devel] [TESTDAY] Test report

[Roman Shaposhnik <roman@xxxxxxxxxx>]

On Sun, Nov 17, 2019 at 10:15 PM Jürgen Groß <jgross@xxxxxxxx> wrote:
>
> On 16.11.19 02:12, Roman Shaposhnik wrote:
> > NOTE: this may or may not be a hair on fire problem, reporting it
> > anyway since I'd hate to pass on something that maybe a serious issue.
> > I haven't had time to debug this just yet -- so just reporting it here
> > pretty raw.
> >
> > Software:
> >     Xen 4.13 RC2
> >     Linux kernel 4.19.5
> > Hardware:
> >     Supermicro E300
> >         
> > https://www.supermicro.com/en/products/system/Mini-ITX/SYS-E300-8D.cfm
> >     Supermicro E100
> >         https://www.supermicro.com/en/products/system/Box_PC/SYS-E100-9S.cfm
> >     Supermicro E50
> >         https://www.supermicro.com/en/products/system/Box_PC/SYS-E50-9AP.cfm
> >
> > Functionality tested: trying to boot Dom0
> > Comments: Xen boots completely and then seems like it either dies
> > right after saying
> >      Xen relinquishing a console
> > or Dom0 dies (without printing a single line of output)
> >
> > FWIW, this started happening after upgrade to RC2. IOW, if I take my
> > previous RC1 binary and stick it into the very same setup --
> > everything boots fine.
> >
> > The issue doesn't seem to be reproducible on Dell boxes (and in my
> > virtual QEmu setup) that I've got.
>
> Can you please add the following to dom0's boot parameters:
>
> console=hvc0 earlyprintk=xen
>
> and send the Xen boot log (obtained via serial line)?

Will do once I get to the lab (traveling for KubeCON for the next
couple of days).

That said, if you see the other thread -- we've figured out that the
culprit was efi=no-rs
that regressed in functionality between RC1 and RC2. Marek has suggested a patch
that I need to test.

Now, if I drop efi=no-rs -- I can boot all the hardware mentioned in
*this* report
just fine.

A much bigger problem is that the following entire product line is now
busted with Xen 4.13 RC2:
     
https://www.dell.com/en-us/work/shop/gateways-embedded-computing/sc/gateways-embedded-pcs/edge-gateway?~ck=bt

On all these boxes:
   - Without efi=no-rs option Xen panics on boot
   - With efi=no-rs Xen boots fine, but Dom0 can't come up

Thanks,
Roman.

P.S. An additional complication with these Dell boxes is that it
required reasonably major brain surgery with soldering iron to rig
console output on them. I did it for one box in my lab but I need
physical access to it and I'm currently traveling.

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