Re: [Bug 53611] New: nVMX: Add nested EPT

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Feb 12, 2013 at 11:43 PM, Jan Kiszka <jan.kiszka@xxxxxxxxxxx> wrote:
>
> On 2013-02-12 20:13, Nakajima, Jun wrote:
> > I looked at your (old) patches, and they seem to be very useful
> > although some of them require rebasing or rewriting. We are interested
> > in completing the nested-VMX features.
>
> That's great news. Can you estimate when you will be able to work on it?
>

We have started looking at the pataches first. But I couldn't
reproduce the results by simply applying the original patches to v3.6:
- L2 Ubuntu 12.04 (64-bit)  (smp 2)
- L1 Ubuntu 12.04 (64-bit) KVM (smp 2)
- L0 Ubuntu 12.04 (64-bit)-based. kernel/KVM is v3.6 + patches (the
ones in nept-v2.tgz).
https://bugzilla.kernel.org/attachment.cgi?id=93101

Without the patches, the L2 guest works. With it, it hangs at boot
time (just black screen):
- EPT was detected by L1 KVM.
- UP L2 didn't help.
- Looks like it's looping at EPT_walk_add_generic at the same address in L0.

Will take a closer look. It would be helpful if the test configuration
(e.g kernel/commit id used, L1/L2 guests) was documented as well.

> I will have a use case for nEPT soon - testing purposes. But working
> into the KVM MMU and doing the port myself may unfortunately consume too
> much time here.
>
> Jan
>

--
Jun
Intel Open Source Technology Center
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux