virtualbox.org

Hello,
I installed Lubuntu as a guest OS and enabled Nested Virtualization on it, then tried to install Xen Hypervisor on my guest OS. When system booted then "dmesg" show me below log:

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[    5.498141] xen:xen_evtchn: Event-channel device installed
[    5.547630] xen: registering gsi 20 triggering 0 polarity 1
[    5.547657] xen: --> pirq=20 -> irq=20 (gsi=20)
[    5.548758] vbg_status_code_to_errno: Unhandled err -1
[    5.548991] vbg_query_host_version error: -1
[    5.571325] vboxguest: probe of 0000:00:04.0 failed with error -71
[    5.721165] Bluetooth: Core ver 2.22
[    5.721182] NET: Registered protocol family 31
[    5.721183] Bluetooth: HCI device and connection manager initialized
[    5.721188] Bluetooth: HCI socket layer initialized
[    5.721190] Bluetooth: L2CAP socket layer initialized
[    5.721193] Bluetooth: SCO socket layer initialized
[    5.807034] kauditd_printk_skb: 14 callbacks suppressed
[    5.807034] audit: type=1400 audit(1606837827.494:25): apparmor="DENIED" operation="capable" profile="/usr/sbin/cups-browsed" pid=489 comm="cups-browsed" capability=23  capname="sys_nice"
[    6.478517] e1000: enp0s3 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
[    6.478831] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s3: link becomes ready
[    6.995973] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer
[    7.856259] xen: registering gsi 21 triggering 0 polarity 1
[    7.856267] Already setup the GSI :21
[    9.186599] snd_intel8x0 0000:00:05.0: white list rate for 1028:0177 is 48000
[   20.180246] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   20.180249] Bluetooth: BNEP filters: protocol multicast
[   20.180256] Bluetooth: BNEP socket layer initialized
[   27.556243] ISO 9660 Extensions: Microsoft Joliet Level 3
[   27.605303] ISO 9660 Extensions: RRIP_1991A
[   47.958286] VFS: busy inodes on changed media or resized disk sr0

And:

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[Dec 1 19:20] [drm:vmw_host_log [vmwgfx]] *ERROR* Failed to send host log message.
[  +0.000528] [drm:vmw_host_log [vmwgfx]] *ERROR* Failed to send host log message.
[  +2.309158] parport_pc parport_pc.956: Unable to set coherent dma mask: disabling DMA
[  +0.000239] parport_pc parport_pc.888: Unable to set coherent dma mask: disabling DMA
[  +0.000254] parport_pc parport_pc.632: Unable to set coherent dma mask: disabling DMA
[  +2.074009] vbg_query_host_version error: -1

Is this an error that related to Xen?

Thank you.

No idea?

Nothing but the obvious: Xen is a type 1 hypervisor, and as such I wouldn't expect it to run inside a VM. There are special setups for Xen inside a VMware ESXi VM, where Xen does not use hardware virtualization, though.

fth0 wrote:Nothing but the obvious: Xen is a type 1 hypervisor, and as such I wouldn't expect it to run inside a VM. There are special setups for Xen inside a VMware ESXi VM, where Xen does not use hardware virtualization, though.

Thank you.
Just for VMware ESXi? How can I sure my Xen working on VirtualBox?

hack3rcon wrote:Just for VMware ESXi? How can I sure my Xen working on VirtualBox?

I don't know, and Google is your friend.

You could try to configure Xen the same way that it is configured when being run inside a VMware ESXi VM. The important aspect is that Xen must not try to use hardware virtualization.

virtualbox.org

What this log mean?

What this log mean?

Re: What this log mean?

Re: What this log mean?

Re: What this log mean?

Re: What this log mean?