From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: x86: Don't report guest userspace emulation error to userspace,
 why ?
Date: Thu, 10 Dec 2015 15:20:44 -0500 (EST)
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Cc: kvm <kvm@vger.kernel.org>
To: Bandan Das <bsd@redhat.com>
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> Paolo Bonzini <pbonzini@redhat.com> writes:
> > On 10/12/2015 18:58, Bandan Das wrote:
> >>> > Allowing userspace to stop the guest with an emulation failure is a
> >> This one I don't :) Userspace started the guest after all, there are other
> >> ways for it to kill the guest if it wanted to.
> >
> > I mean allowing guest userspace to stop the guest.
> 
> Sure! Userspace (Qemu) can just reenter the guest when it sees the failure.
> Doing it in the host kvm seems overkill.

Most userspaces will get it wrong.  Doing it once makes sure that you
do it right.

Paolo