From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751746Ab3AYUAL (ORCPT ); Fri, 25 Jan 2013 15:00:11 -0500 Received: from mo-p00-ob.rzone.de ([81.169.146.162]:61130 "EHLO mo-p00-ob.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751074Ab3AYUAJ (ORCPT ); Fri, 25 Jan 2013 15:00:09 -0500 X-RZG-AUTH: :P2EQZWCpfu+qG7CngxMFH1J+zrwiavkK6tmQaLfmztM8TOFGji0LFus= X-RZG-CLASS-ID: mo00 Date: Fri, 25 Jan 2013 21:00:00 +0100 From: Olaf Hering To: KY Srinivasan Cc: "linux-kernel@vger.kernel.org" , Greg KH , "Jan Beulich (JBeulich@suse.com)" Subject: Re: [PATCH] x86: Hyper-V: register clocksource only if its advertised Message-ID: <20130125200000.GA9712@aepfle.de> References: <1359121036-16309-1-git-send-email-olaf@aepfle.de> <761b736ff1854810bfe272961248e6d2@BLUPR03MB050.namprd03.prod.outlook.com> <20130125165443.GA15833@aepfle.de> <500ca90f5d3e4d4f80c7fb62c34d36f0@BLUPR03MB050.namprd03.prod.outlook.com> <20130125171923.GA19306@aepfle.de> <542f1d12e3ee46f48a85a143361c113d@SN2PR03MB061.namprd03.prod.outlook.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <542f1d12e3ee46f48a85a143361c113d@SN2PR03MB061.namprd03.prod.outlook.com> User-Agent: Mutt/1.5.21.rev5632 (2013-01-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 25, KY Srinivasan wrote: > Your current approach of using the "Partition Reference Counter" > feature bit is very fragile. Let us assume that future Windows guests > depend on this feature; Xen would certainly emulate this to have a > "good" emulation of Hyper-V and we are back to square one. If Xen starts to emulate the "Partition Reference Counter" feature, wouldnt it also advertise this feature? Olaf