Re: [nvmx testing, linux on linux] Disabling EPT in L1 renders L2 stuck on boot

[Gleb Natapov <gleb@redhat.com>]

On Fri, Oct 04, 2013 at 04:05:50PM +0300, Gleb Natapov wrote:
> On Fri, Oct 04, 2013 at 06:03:33PM +0530, Kashyap Chamarthy wrote:
> > On Fri, Oct 4, 2013 at 3:09 PM, Gleb Natapov <gleb@redhat.com> wrote:
> > > On Fri, Oct 04, 2013 at 03:03:17PM +0530, Kashyap Chamarthy wrote:
> > >> Discussed with Gleb on IRC: I'll have to try with kvm.git
> > 
> > I just compiled kernel from kvm.git queue on both L0 and L1.
> > 
> > For completeness' sake, this how I did:
> > 
> >     $ git describe
> >     for-linus-12017-g8a3c1a33
> >     $ git log | head -1
> >     commit 8a3c1a33476f6bfebd07954e2277dbc88003bd37
> > 
> >     $ git branch -d test_ept1 origin/queue
> >     $ make -j6 && make bzImage && make modules
> >     $ sudo make modules_install && make install
> > 
> > (Rebooted both L0 and L1 into the new kernel)
> > 
> > > and a simple
> > >> qemu-kvm command line.
> > >>
> > > And try to disable shadow vmcs on the host just to rule it out.
> > 
> >     $ cat /sys/module/kvm_intel/parameters/enable_shadow_vmcs
> >     N
> > 
> > The above didn't have any effect.
> > 
> > No, booting L2 is still stuck.
> > 
> > Not sure what's broken (if at all) here. Gleb, you mentioned you were
> > able to test the MMU combination 'shadow on EPT' just fine with an F19
> > liveCD without libvirt in-place. If you have still have that test
> > environment, can you please post your qemu-kvm command line?
> > 
> Something as basic as "qemu -m 2G -cdrom /path/to/image -cpu host
> 
And Live CD I use is XFCE based, not sure if it matters.

--
			Gleb.