From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: KVM exit on UD interception
Date: Tue, 06 May 2014 18:56:38 +0200
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Il 05/05/2014 17:56, Alexandru Du=C5=A3u ha scritto:
>
> It seems that re-entering virtualized execution on UD interception
> gives the user the flexibility of running binaries with newer
> instructions on older hardware, if kvm is able to emulate the newer
> instructions. I do not fully understand the details of this scenario,
> is there such a scenario or is it likely that ud_interception() will
> change?

Yes, you are correct.  This emulation capability is used in some cases,=
=20
including: MOVBE, SYSCALL/SYSENTER on 32-bit guests, VMCALL and VMMCALL=
=2E

Paolo