From: Gleb Natapov <gleb@redhat.com>
To: Kashyap Chamarthy <kashyap.cv@gmail.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [nvmx testing, linux on linux] Disabling EPT in L1 renders L2 stuck on boot
Date: Fri, 4 Oct 2013 16:08:17 +0300 [thread overview]
Message-ID: <20131004130817.GB12257@redhat.com> (raw)
In-Reply-To: <20131004130550.GA12257@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.
next prev parent reply other threads:[~2013-10-04 13:08 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-04 8:31 [nvmx testing, linux on linux] Disabling EPT in L1 renders L2 stuck on boot Kashyap Chamarthy
2013-10-04 9:33 ` Kashyap Chamarthy
2013-10-04 9:39 ` Gleb Natapov
2013-10-04 12:33 ` Kashyap Chamarthy
2013-10-04 13:05 ` Gleb Natapov
2013-10-04 13:08 ` Gleb Natapov [this message]
2013-10-04 15:28 ` Kashyap Chamarthy
2013-10-07 12:59 ` Kashyap Chamarthy
2013-10-07 15:18 ` Gleb Natapov
2013-10-08 5:38 ` Kashyap Chamarthy
2013-10-08 13:03 ` Paolo Bonzini
2013-10-08 14:48 ` Paolo Bonzini
2013-10-09 6:22 ` Kashyap Chamarthy
2013-10-09 8:16 ` Gleb Natapov
2013-10-09 17:46 ` Kashyap Chamarthy
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