On 12/14/2016 10:03 PM, Joey Connelly wrote: > Hey QEMU dev group, > > I have a few questions related to nesting QEMU processes, but first here is > my system setup: > > > > - *HOST MACHINE:* GNU/Linux release 4.5.5 (KVM version follows), Distro > Fedora 24, x86_64 arch, supports Intel VT-x, QEMU 2.6.2, libvirt 1.3.3 > > > - *GUEST ISO:* GNU/Linux release 2.6.13 (KVM version follows), Distro > SliTaz 4.0, i686 32-bit arch, does not appear to support Intel VT-x, QEMU > 0.12.5, does not have libvirt >
I'm not sure what you might mean by a guest OS having KVM and QEMU packages but not "supporting" VT-x. KVM on Intel platforms _is_ the support for VT-x. You might be discovering that when you launch this guest environment that it does not think your virtual CPU has VT-x, but that's a different matter. Try searching around for how to enable Nested Virt for KVM. "by default" this is off, AFAIK: https://fedoraproject.org/wiki/How_to_enable_nested_virtualization_in_KVM (Also, QEMU 0.12.5 is practically Precambrian in its age -- I have massive reservations about your ability to use it to accomplish nested virt...) > > My question is primarily in response to this comment from your qemu-devel > threads: > > "qemu-system-x86_64 does not support KVM on a 32-bit host", Daniel Berrange. > > https://lists.nongnu.org/archive/html/qemu-devel/2012-09/msg02186.html > > > > > > *[QUESTION#1.]* > > Since my guest OS is 32-bit, do I have to use qemu-system-i386 –enable-kvm > on my host so that the guest can create a QEMU process of its own > supporting KVM? Or are there additional qemu-system-i386 arguments I need > from my host: –cpu <???> -machine <???> > > > > > > *[QUESTION#2.]* > > Since my guest OS does not support Intel VT-x, can I force this with > qemu-system-i386 arguments? I’m not sure how exactly to do this. > > > > Thanks, > > -Joey >
