From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcelo Tosatti Subject: Re: [PATCH v3 2/3] KVM: nVMX: Fully emulate preemption timer Date: Fri, 7 Mar 2014 14:20:35 -0300 Message-ID: <20140307172035.GA30738@amt.cnet> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Paolo Bonzini , Gleb Natapov , kvm To: Jan Kiszka Return-path: Received: from mx1.redhat.com ([209.132.183.28]:32720 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752524AbaCGRUz (ORCPT ); Fri, 7 Mar 2014 12:20:55 -0500 Content-Disposition: inline In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: On Thu, Mar 06, 2014 at 06:33:58PM +0100, Jan Kiszka wrote: > We cannot rely on the hardware-provided preemption timer support because > we are holding L2 in HLT outside non-root mode. > Furthermore, emulating > the preemption will resolve tick rate errata on older Intel CPUs. Can you describe this in more detail please? Errata number?