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Date:      Fri, 6 May 2016 18:52:53 +0200
From:      Roger Pau =?iso-8859-1?Q?Monn=E9?= <roger.pau@citrix.com>
To:        Marcin Cieslak <saper@saper.info>
Cc:        <freebsd-virtualization@freebsd.org>
Subject:   Re: Booting Solaris 11.3 (was Re: Booting r298488 as Xen Dom0 may break ZFS pool?)
Message-ID:  <20160506165253.o4sphxjp7ngmwu4w@mac>
In-Reply-To: <alpine.BSF.2.11.1605052159420.2130@z.fncre.vasb>
References:  <alpine.BSF.2.11.1604260811450.1768@z.fncre.vasb> <alpine.BSF.2.11.1604260842200.1768@z.fncre.vasb> <20160426093556.oxeh5qyafe3ro6xy@mac> <alpine.BSF.2.11.1604261036070.1768@z.fncre.vasb> <20160426112925.hmijqrxt52kyswfg@mac> <alpine.BSF.2.11.1604282000160.1768@z.fncre.vasb> <20160429075716.5mykxirogrlvc5pq@mac> <alpine.BSF.2.11.1604302041360.1768@z.fncre.vasb> <20160505154136.ry2jq7xfavej4esg@mac> <alpine.BSF.2.11.1605052159420.2130@z.fncre.vasb>

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On Thu, May 05, 2016 at 10:20:51PM +0000, Marcin Cieslak wrote:
> On Thu, 5 May 2016, Roger Pau Monné wrote:
> 
> > On Sat, Apr 30, 2016 at 08:56:54PM +0000, Marcin Cieslak wrote:
> > > > Certainly. I assumed that you meant it crashed the VM, not the whole host. 
> > > > Can you please provide the trace of the crash?
> > > 
> > > Apologies, forgot to let Xen keep VGA:
> > > 
> > > http://marcincieslak.com/tmp/xencrash.png
> > > 
> > > Manual OCR:
> > > 
> > > FreeBSD/amd64 (o.saper.info) (xc0)
> > > 
> > > login: (XEN) vmx.c:2464:d0v0 EPT violation 0x182 (-w-/---), gpa 0x0000010178f000
> > 
> > Hello,
> > 
> > I've been able to debug this and found the issue. I have two patches that 
> > should be applied to FreeBSD in order to fix it, they can be found at:
> > 
> > https://people.freebsd.org/~royger/privcmd_fixes/
> > 
> > Could you please give them a try?
> 
> > I have however been unable to boot a Solaris 11.3 guest under PV mode, but 
> > at least the host is not crashing anymore :).
> 
> Thanks, I can confirm that the patches fix the crash for me.
> The half-life of PV Solaris is still under the microsecond.
> 
> Btw. I have managed to get gdbsx going by replacing "/proc/xen/privcmd"
> with "/dev/xen/privcmd".
> 
> Indeed, the state of Solaris is pretty bad:
> 
> - Solaris 11.3 under HVM boots, but the installer complains there
>   are no local disks (which is not true, even device nodes are there
>   under /dev/dsk/ ... )

That's quite weird, under HVM disks are available using both the emulated 
and the PV interfaces, and Solaris 11.3 should certainly support the 
emulated ones. IIRC they are AHCI. 
 
> - OpenIndiana (OI-hipster-text-20160421.iso as HVM) hangs after printing
>   out the kernel version message
> 
> - SmartOS (smartos-20160428T170316Z.iso) 
>   seems to work at first, but after the initial configuration
>   it cannot bring the network interface up because its link
>   state is unknown (tried model=e1000 and the default Realtek):
> 
>     [root@master0 ~]# dladm show-phys
>     LINK         MEDIA                STATE     SPEED  DUPLEX   DEVICE
>     e1000g0      Ethernet             unknown   0      half     e1000g0

Hm, AFAICT this doesn't look related to FreeBSD, but just to be sure, could 
you try the same with a Linux Dom0?

Roger.



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