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Date: Tue, 27 Mar 2018 00:55:58 -0400
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Wanpeng Li <kernellwp@gmail.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
        Paolo Bonzini <pbonzini@redhat.com>,
        Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>,
        Andrew Cooper <andrew.cooper3@citrix.com>
Subject: Re: [PATCH 2/2] KVM: VMX: Add Force Emulation Prefix for "emulate
 the next instruction"
Message-ID: <20180327045558.GC16974@char.us.oracle.com>
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On Tue, Mar 27, 2018 at 12:40:20AM -0400, Konrad Rzeszutek Wilk wrote:
> On Mon, Mar 26, 2018 at 07:12:15PM -0700, Wanpeng Li wrote:
> > From: Wanpeng Li <wanpengli@tencent.com>
> > 
> > This patch introduces a Force Emulation Prefix (ud2a; .ascii "kvm") for 
> > "emulate the next instruction", the codes will be executed by emulator 
> > instead of processor, for testing purposes.
> 
> Can you expand a bit ? Why do you want this in KVM in the first place?
> Should this be controlled by a boolean parameter? 

.. per guest. That is instead of a global one, have a per guest one?