BHyVe: vm_setup_memory(highmem): Cannot allocate memory

[Roman Bogorodskiy]

  Andreas Nilsson wrote:

> On Sun, Sep 2, 2012 at 6:56 PM, Roman Bogorodskiy <novel at freebsd.org> wrote:
> 
> >   Roman Bogorodskiy wrote:
> >
> > >   Peter Grehan wrote:
> > >
> > > > Hi Roman,
> > > >
> > > > > Yeah, but I'd like to leave more memory for the host system, so I
> > > > > specified 6GB. I have 8GB at all, so 2GB left for VMs.
> > > > > Should it cause any problems?
> > > >
> > > >   No, that should be fine.
> > > >
> > > > > BTW, I encountered a problem with the tap0 device. I create a tap
> > device
> > > > > and assign an address to it, using 'ifconfig tap0 192.168.1.1 up'.
> > > > >
> > > > > I boot a VM and everything goes fine. When I do 'reboot' in the
> > guest,
> > > > > it reboots, but tap0 on the host goes down and its address is
> > dropped.
> > > > > Is that an expected behaviour?
> > > >
> > > >   Yes - we probably need to fix the tap device to not do that :(
> > >
> > > Yeah, it would be great to get this fixed.
> > >
> > > And one question: is there a way to get a list of all running VMs on the
> > > host? Doesn't seem like vmmctl being able to do that.
> >
> > Oh, I've started reading the code and figured out that I can just do
> > `ls /dev/vmm`!
> >
> > Roman Bogorodskiy
> >
> 
> IMHO: Please don't introduce "reading stuff in /dev" as a standard way to
> get info ( at least not for end user). sysctl is so much nicer to work with.

Yes, reading from /dev is not very convenient, but appears that sysctl
is not supported. I didn't read the code though, but I don't see
anything looking like that in sysctl -a. Probably the most handy way of
doing that is via 'vmmctl' or a tool like that.

Anyways, I started spotting one more problem:

I start a VM like that:

sudo /usr/sbin/bhyveload -m 256 -M 0 -h /var/run/bhyve/test1/vm1 test1
sudo /usr/bin/cpuset -l 0-3 /usr/sbin/bhyve -m 256 -M 0 -s 1,virtio-net,tap0 test1

The last commands give me:

Failed to emulate instruction at 0xffffffff80594f3a

What could be wrong with that?

Roman Bogorodskiy
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 488 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-virtualization/attachments/20120909/f7f08ab6/attachment.pgp