[BitVisor-users-en:45] Re: Nested Virtualization Support

[Hideki EIRAKU]

Hi,

From: <krad ¡÷ tuta.io>
Subject: [BitVisor-users-en:44] Nested Virtualization Support
Date: Mon, 11 Sep 2017 09:16:20 +0200 (CEST)

> I'm wondering if there are any plans for/the status of nested virtualization on bitvisor?
> I'm assuming if I tried to run for example vmware player or virtualbox on top of bitvisor, these systems do not run/run very slowly because they are unable to use the hardware virtual machine extensions (VT-x/AMD-V).

In the latest BitVisor https://bitbucket.org/bitvisor/bitvisor,
"unsafe nested virtualization" is implemented for AMD-V.  It can be
enabled by setting config.vmm.unsafe_nested_virtualization=1.  Unsafe
means that an operating system on a hypervisor on BitVisor can access
devices directly - no drivers in BitVisor can handle the access - if
the hypervisor makes accesses passthrough to devices.

Unsafe nested virtualization for VT-x is currently being developed.

-- 
Hideki EIRAKU <hdk ¡÷ igel.co.jp>