Re: [PATCH] KVM: VMX: require virtual NMI support

From: Fabian Grünbichler
Date: Wed Oct 25 2017 - 04:20:52 EST


On Wed, Sep 13, 2017 at 10:34:26PM +0200, Paolo Bonzini wrote:
> On 13/09/2017 19:23, Zdenek Kaspar wrote:
> > On 03/27/2017 02:38 PM, Paolo Bonzini wrote:
> >> Virtual NMIs are only missing in Prescott and Yonah chips. Both are obsolete
> >> for virtualization usage---Yonah is 32-bit only even---so drop vNMI emulation.
> >>
> >> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> >> ---
> >> arch/x86/kvm/vmx.c | 143 ++++++++++++++---------------------------------------
> >> 1 file changed, 38 insertions(+), 105 deletions(-)
> >
> > This breaks virtualization on old Intel Core2 machines.
> > Any chance to revert?
>
> Already planned for 4.14 and future 4.13 stable kernels, but haven't
> gotten round to it.
>
> Paolo
>

any update on this? 4.14 is soon out the door, and 4.13 with the
breaking change just got released as part of Ubuntu 17.10 / Artful..