From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: x86: Don't report guest userspace emulation error to userspace, why ? Date: Thu, 10 Dec 2015 18:59:15 +0100 Message-ID: <5669BD73.7030902@redhat.com> References: <56694209.5050800@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: kvm To: Bandan Das Return-path: Received: from mx1.redhat.com ([209.132.183.28]:51675 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753683AbbLJR7W (ORCPT ); Thu, 10 Dec 2015 12:59:22 -0500 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (Postfix) with ESMTPS id D2C67C001247 for ; Thu, 10 Dec 2015 17:59:22 +0000 (UTC) In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: 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. Paolo >> > possible denial of service, similar to L2 stopping L1 with an emulation >> > failure.