From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755037Ab0CLBVw (ORCPT ); Thu, 11 Mar 2010 20:21:52 -0500 Received: from mga06.intel.com ([134.134.136.21]:39839 "EHLO orsmga101.jf.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754780Ab0CLBVu (ORCPT ); Thu, 11 Mar 2010 20:21:50 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.49,623,1262592000"; d="scan'208";a="500011053" From: Sheng Yang Organization: Intel Opensource Technology Center To: Stefano Stabellini Subject: Re: [Xen-devel] [PATCH 7/7] xen: Enable event channel of PV extension of HVM Date: Fri, 12 Mar 2010 09:23:22 +0800 User-Agent: KMail/1.12.2 (Linux/2.6.31-19-generic; KDE/4.3.2; x86_64; ; ) Cc: Ian Campbell , Jeremy Fitzhardinge , Jeremy Fitzhardinge , "xen-devel" , "linux-kernel@vger.kernel.org" , Ian Pratt , Keir Fraser , Ingo Molnar , Konrad Rzeszutek Wilk References: <1268032732-8025-1-git-send-email-sheng@linux.intel.com> <201003110934.51408.sheng@linux.intel.com> In-Reply-To: MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <201003120923.22666.sheng@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 11 March 2010 19:43:00 Stefano Stabellini wrote: > On Thu, 11 Mar 2010, Sheng Yang wrote: > > On Wednesday 10 March 2010 23:29:30 Stefano Stabellini wrote: > > > On Wed, 10 Mar 2010, Sheng Yang wrote: > > > > I think we can leave the controversial thing later. At least, we want > > > > a framework for PV extension of HVM. We can work together to > > > > determine what is the better way for evtchn, as well as porting > > > > pirqs. (And the later MSI work may also depends on it) > > > > > > Most of my patch series can be upstreamed right now, the only thing > > > that needs some extra work is the pirq remapping. > > > So yes, we can upstream the rest and that would also make PV on HVM > > > work on linux upstream ASAP. > > > I think that is a worthy goal by itself, therefore I am going to send > > > another reduced patch series, ready to be upstreamed, without pirq > > > remappings, with support for PV on HVM. > > > > I think my first 6 patches can be used without modification. And I've > > already spent lots of efforts on them with Jeremy. > > > > We can work on evtchn and platform pci later. > > Agreed on evtchn but platform pci should be present even in the basic > version. > Please read the series "basic PV on HVM support" I posted yesterday > because I believe has already everything needed to be accepted upstream > right now; at the same time it introduces the pv clocksource and the > vector based callback mechanism that is going to be needed for the > interrupt remapping we are going to work on later on. > IIRC, I think your platform PCI driver also depends on evtchn to inject interrupt? -- regards Yang, Sheng