From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vadim Rozenfeld Subject: Re: [RFC PATCH 7/7] [hyper-v] init hyper-v cpuid leafs Date: Tue, 11 Oct 2011 18:09:07 +0200 Message-ID: <1318349347.2706.66.camel@vadimr.dell> References: <1318186375-27672-1-git-send-email-vrozenfe@redhat.com> <1318186375-27672-8-git-send-email-vrozenfe@redhat.com> <4E93F262.3070800@redhat.com> <1318340766.2706.59.camel@vadimr.dell> <4E946639.9020001@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org, Avi Kivity To: Paolo Bonzini Return-path: Received: from mx1.redhat.com ([209.132.183.28]:51044 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754866Ab1JKQJ0 (ORCPT ); Tue, 11 Oct 2011 12:09:26 -0400 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p9BG9Qi2007488 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Tue, 11 Oct 2011 12:09:26 -0400 In-Reply-To: <4E946639.9020001@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Tue, 2011-10-11 at 17:52 +0200, Paolo Bonzini wrote: > On 10/11/2011 03:46 PM, Vadim Rozenfeld wrote: > > > These should not be KVM-specific. You should be able to add > > > enlightenments to a TCG VM. At the same time, the KVM leaves could be > > > moved to 0x40000100 when enlightenments are active, similar to what Xen > > > does. > > > > > > > IMO, adding Hyper-V features without KVM support has little, if any, > > meaning. Relaxed timing is the only one thing, which can be activated > > without help from hypervisor. > > Spinlocks too. TCG does its own round-robin scheduling, so having zero How? You need hypercall page for it. Best, Vadim. > retries could be the best setting. But even if it is not useful for > TCG, there's nothing KVM-specific, and that's the important point. > > Paolo