Fwd: Re: Unable to boot with the dom0 xen kernel

[Roger Pau Monné]

Hello,

El 07/04/15 a les 17.51, Gustau Pérez ha escrit:
>    Removing the assert prevents the panic and thus the machine boots.
> However I believe the assert was there for a reason, wouldn't it break
> somewhere else?
> 
>    OTOH, I see the machine has problems handling the interruption from
> all devices. I see watchdog timeouts from the mpt controller, usb, and
> network. Even shutting down the machine via ACPI fails (I had to unplug
> the two PS to shut it down). Probably related with the iommu=no-intremap
> in the xen_cmdline, isn't it?

The interrupt timeouts are probably related to the IOMMU errata, the
ACPI poweroff problem is because we need to negotiate the shutdown with
the hypervisor, which we currently don't do. I have a very hacky patch
for FreeBSD that should fix it, but I haven't found time to properly
integrate it:

http://xenbits.xen.org/gitweb/?p=people/royger/freebsd.git;a=patch;h=612509976d5d2af7633547e0279aae08a6508d7c

Leaving this aside, I have a patch for Xen I would like you to try on
this box, it *should* fix the INS/OUTS problem (not the poweroff). I've
pushed it to a branch on my git repo, you can find it at:

http://xenbits.xen.org/gitweb/?p=people/royger/xen.git;a=shortlog;h=refs/heads/pvh_io_ports.v1

or

git://xenbits.xen.org/people/royger/xen.git branch pvh_io_ports.v1

If you still get the timeouts please post the full boot log and we can
try to figure out if there's any workaround.

Thanks, Roger.